mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-21 01:18:52 +09:00
![Heinrich Schuchardt](/assets/img/avatar_default.png)
The watchdog is initialized with a 5 minute timeout period. It can be reset by SetWatchdogTimer. It is stopped by ExitBoottimeServices. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2064 lines
54 KiB
C
2064 lines
54 KiB
C
/*
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* EFI application boot time services
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*
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* Copyright (c) 2016 Alexander Graf
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <div64.h>
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#include <efi_loader.h>
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#include <environment.h>
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#include <malloc.h>
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#include <asm/global_data.h>
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#include <libfdt_env.h>
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#include <u-boot/crc.h>
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#include <bootm.h>
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#include <inttypes.h>
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#include <watchdog.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* Task priority level */
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static UINTN efi_tpl = TPL_APPLICATION;
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/* This list contains all the EFI objects our payload has access to */
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LIST_HEAD(efi_obj_list);
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/*
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* If we're running on nasty systems (32bit ARM booting into non-EFI Linux)
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* we need to do trickery with caches. Since we don't want to break the EFI
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* aware boot path, only apply hacks when loading exiting directly (breaking
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* direct Linux EFI booting along the way - oh well).
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*/
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static bool efi_is_direct_boot = true;
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/*
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* EFI can pass arbitrary additional "tables" containing vendor specific
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* information to the payload. One such table is the FDT table which contains
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* a pointer to a flattened device tree blob.
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*
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* In most cases we want to pass an FDT to the payload, so reserve one slot of
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* config table space for it. The pointer gets populated by do_bootefi_exec().
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*/
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static struct efi_configuration_table __efi_runtime_data efi_conf_table[2];
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#ifdef CONFIG_ARM
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/*
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* The "gd" pointer lives in a register on ARM and AArch64 that we declare
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* fixed when compiling U-Boot. However, the payload does not know about that
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* restriction so we need to manually swap its and our view of that register on
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* EFI callback entry/exit.
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*/
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static volatile void *efi_gd, *app_gd;
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#endif
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static int entry_count;
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static int nesting_level;
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/* Called on every callback entry */
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int __efi_entry_check(void)
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{
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int ret = entry_count++ == 0;
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#ifdef CONFIG_ARM
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assert(efi_gd);
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app_gd = gd;
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gd = efi_gd;
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#endif
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return ret;
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}
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/* Called on every callback exit */
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int __efi_exit_check(void)
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{
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int ret = --entry_count == 0;
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#ifdef CONFIG_ARM
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gd = app_gd;
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#endif
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return ret;
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}
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/* Called from do_bootefi_exec() */
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void efi_save_gd(void)
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{
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#ifdef CONFIG_ARM
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efi_gd = gd;
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#endif
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}
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/*
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* Special case handler for error/abort that just forces things back
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* to u-boot world so we can dump out an abort msg, without any care
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* about returning back to UEFI world.
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*/
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void efi_restore_gd(void)
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{
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#ifdef CONFIG_ARM
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/* Only restore if we're already in EFI context */
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if (!efi_gd)
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return;
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gd = efi_gd;
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#endif
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}
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/*
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* Two spaces per indent level, maxing out at 10.. which ought to be
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* enough for anyone ;-)
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*/
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static const char *indent_string(int level)
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{
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const char *indent = " ";
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const int max = strlen(indent);
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level = min(max, level * 2);
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return &indent[max - level];
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}
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const char *__efi_nesting(void)
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{
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return indent_string(nesting_level);
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}
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const char *__efi_nesting_inc(void)
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{
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return indent_string(nesting_level++);
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}
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const char *__efi_nesting_dec(void)
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{
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return indent_string(--nesting_level);
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}
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/*
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* Queue an EFI event.
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*
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* This function queues the notification function of the event for future
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* execution.
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*
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* The notification function is called if the task priority level of the
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* event is higher than the current task priority level.
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*
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* For the SignalEvent service see efi_signal_event_ext.
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*
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* @event event to signal
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*/
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void efi_signal_event(struct efi_event *event)
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{
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if (event->notify_function) {
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event->is_queued = true;
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/* Check TPL */
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if (efi_tpl >= event->notify_tpl)
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return;
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EFI_CALL_VOID(event->notify_function(event,
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event->notify_context));
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}
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event->is_queued = false;
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}
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/*
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* Raise the task priority level.
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*
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* This function implements the RaiseTpl service.
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* See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @new_tpl new value of the task priority level
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* @return old value of the task priority level
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*/
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static unsigned long EFIAPI efi_raise_tpl(UINTN new_tpl)
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{
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UINTN old_tpl = efi_tpl;
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EFI_ENTRY("0x%zx", new_tpl);
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if (new_tpl < efi_tpl)
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debug("WARNING: new_tpl < current_tpl in %s\n", __func__);
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efi_tpl = new_tpl;
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if (efi_tpl > TPL_HIGH_LEVEL)
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efi_tpl = TPL_HIGH_LEVEL;
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EFI_EXIT(EFI_SUCCESS);
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return old_tpl;
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}
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/*
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* Lower the task priority level.
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*
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* This function implements the RestoreTpl service.
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* See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @old_tpl value of the task priority level to be restored
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*/
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static void EFIAPI efi_restore_tpl(UINTN old_tpl)
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{
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EFI_ENTRY("0x%zx", old_tpl);
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if (old_tpl > efi_tpl)
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debug("WARNING: old_tpl > current_tpl in %s\n", __func__);
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efi_tpl = old_tpl;
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if (efi_tpl > TPL_HIGH_LEVEL)
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efi_tpl = TPL_HIGH_LEVEL;
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EFI_EXIT(EFI_SUCCESS);
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}
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/*
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* Allocate memory pages.
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*
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* This function implements the AllocatePages service.
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* See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @type type of allocation to be performed
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* @memory_type usage type of the allocated memory
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* @pages number of pages to be allocated
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* @memory allocated memory
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* @return status code
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*/
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static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type,
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unsigned long pages,
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uint64_t *memory)
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{
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efi_status_t r;
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EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory);
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r = efi_allocate_pages(type, memory_type, pages, memory);
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return EFI_EXIT(r);
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}
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/*
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* Free memory pages.
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*
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* This function implements the FreePages service.
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* See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @memory start of the memory area to be freed
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* @pages number of pages to be freed
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* @return status code
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*/
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static efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory,
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unsigned long pages)
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{
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efi_status_t r;
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EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages);
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r = efi_free_pages(memory, pages);
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return EFI_EXIT(r);
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}
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/*
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* Get map describing memory usage.
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*
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* This function implements the GetMemoryMap service.
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* See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @memory_map_size on entry the size, in bytes, of the memory map buffer,
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* on exit the size of the copied memory map
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* @memory_map buffer to which the memory map is written
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* @map_key key for the memory map
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* @descriptor_size size of an individual memory descriptor
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* @descriptor_version version number of the memory descriptor structure
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* @return status code
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*/
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static efi_status_t EFIAPI efi_get_memory_map_ext(
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unsigned long *memory_map_size,
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struct efi_mem_desc *memory_map,
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unsigned long *map_key,
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unsigned long *descriptor_size,
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uint32_t *descriptor_version)
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{
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efi_status_t r;
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EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map,
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map_key, descriptor_size, descriptor_version);
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r = efi_get_memory_map(memory_map_size, memory_map, map_key,
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descriptor_size, descriptor_version);
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return EFI_EXIT(r);
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}
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/*
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* Allocate memory from pool.
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*
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* This function implements the AllocatePool service.
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* See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @pool_type type of the pool from which memory is to be allocated
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* @size number of bytes to be allocated
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* @buffer allocated memory
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* @return status code
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*/
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static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type,
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unsigned long size,
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void **buffer)
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{
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efi_status_t r;
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EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer);
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r = efi_allocate_pool(pool_type, size, buffer);
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return EFI_EXIT(r);
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}
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/*
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* Free memory from pool.
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*
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* This function implements the FreePool service.
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* See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @buffer start of memory to be freed
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* @return status code
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*/
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static efi_status_t EFIAPI efi_free_pool_ext(void *buffer)
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{
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efi_status_t r;
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EFI_ENTRY("%p", buffer);
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r = efi_free_pool(buffer);
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return EFI_EXIT(r);
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}
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static efi_status_t efi_create_handle(void **handle)
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{
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struct efi_object *obj;
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efi_status_t r;
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r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
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sizeof(struct efi_object),
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(void **)&obj);
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if (r != EFI_SUCCESS)
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return r;
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memset(obj, 0, sizeof(struct efi_object));
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obj->handle = obj;
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list_add_tail(&obj->link, &efi_obj_list);
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*handle = obj;
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return r;
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}
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/*
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* Our event capabilities are very limited. Only a small limited
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* number of events is allowed to coexist.
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*/
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static struct efi_event efi_events[16];
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/*
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* Create an event.
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*
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* This function is used inside U-Boot code to create an event.
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*
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* For the API function implementing the CreateEvent service see
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* efi_create_event_ext.
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*
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* @type type of the event to create
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* @notify_tpl task priority level of the event
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* @notify_function notification function of the event
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* @notify_context pointer passed to the notification function
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* @event created event
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* @return status code
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*/
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efi_status_t efi_create_event(uint32_t type, UINTN notify_tpl,
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void (EFIAPI *notify_function) (
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struct efi_event *event,
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void *context),
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void *notify_context, struct efi_event **event)
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{
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int i;
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if (event == NULL)
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return EFI_INVALID_PARAMETER;
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if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT))
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return EFI_INVALID_PARAMETER;
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if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) &&
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notify_function == NULL)
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return EFI_INVALID_PARAMETER;
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for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
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if (efi_events[i].type)
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continue;
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efi_events[i].type = type;
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efi_events[i].notify_tpl = notify_tpl;
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efi_events[i].notify_function = notify_function;
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efi_events[i].notify_context = notify_context;
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/* Disable timers on bootup */
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efi_events[i].trigger_next = -1ULL;
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efi_events[i].is_queued = false;
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efi_events[i].is_signaled = false;
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*event = &efi_events[i];
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return EFI_SUCCESS;
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}
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return EFI_OUT_OF_RESOURCES;
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}
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/*
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* Create an event.
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*
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* This function implements the CreateEvent service.
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* See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @type type of the event to create
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* @notify_tpl task priority level of the event
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* @notify_function notification function of the event
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* @notify_context pointer passed to the notification function
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* @event created event
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* @return status code
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*/
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static efi_status_t EFIAPI efi_create_event_ext(
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uint32_t type, UINTN notify_tpl,
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void (EFIAPI *notify_function) (
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struct efi_event *event,
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void *context),
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void *notify_context, struct efi_event **event)
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{
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EFI_ENTRY("%d, 0x%zx, %p, %p", type, notify_tpl, notify_function,
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notify_context);
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return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function,
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notify_context, event));
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}
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/*
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* Check if a timer event has occurred or a queued notification function should
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* be called.
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*
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* Our timers have to work without interrupts, so we check whenever keyboard
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* input or disk accesses happen if enough time elapsed for them to fire.
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*/
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void efi_timer_check(void)
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{
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int i;
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u64 now = timer_get_us();
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for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
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if (!efi_events[i].type)
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continue;
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if (efi_events[i].is_queued)
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efi_signal_event(&efi_events[i]);
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if (!(efi_events[i].type & EVT_TIMER) ||
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now < efi_events[i].trigger_next)
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continue;
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switch (efi_events[i].trigger_type) {
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case EFI_TIMER_RELATIVE:
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efi_events[i].trigger_type = EFI_TIMER_STOP;
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break;
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case EFI_TIMER_PERIODIC:
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efi_events[i].trigger_next +=
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efi_events[i].trigger_time;
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break;
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default:
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continue;
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}
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efi_events[i].is_signaled = true;
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efi_signal_event(&efi_events[i]);
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}
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WATCHDOG_RESET();
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}
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/*
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* Set the trigger time for a timer event or stop the event.
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*
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* This is the function for internal usage in U-Boot. For the API function
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* implementing the SetTimer service see efi_set_timer_ext.
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*
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* @event event for which the timer is set
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* @type type of the timer
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* @trigger_time trigger period in multiples of 100ns
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* @return status code
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*/
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efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
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uint64_t trigger_time)
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{
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int i;
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/*
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* The parameter defines a multiple of 100ns.
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* We use multiples of 1000ns. So divide by 10.
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*/
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do_div(trigger_time, 10);
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for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
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if (event != &efi_events[i])
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continue;
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if (!(event->type & EVT_TIMER))
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break;
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switch (type) {
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case EFI_TIMER_STOP:
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event->trigger_next = -1ULL;
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break;
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case EFI_TIMER_PERIODIC:
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case EFI_TIMER_RELATIVE:
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event->trigger_next =
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timer_get_us() + trigger_time;
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break;
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default:
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return EFI_INVALID_PARAMETER;
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}
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event->trigger_type = type;
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event->trigger_time = trigger_time;
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event->is_signaled = false;
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return EFI_SUCCESS;
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}
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return EFI_INVALID_PARAMETER;
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}
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|
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/*
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* Set the trigger time for a timer event or stop the event.
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*
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* This function implements the SetTimer service.
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* See the Unified Extensible Firmware Interface (UEFI) specification
|
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* for details.
|
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*
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* @event event for which the timer is set
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* @type type of the timer
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* @trigger_time trigger period in multiples of 100ns
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* @return status code
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*/
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static efi_status_t EFIAPI efi_set_timer_ext(struct efi_event *event,
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enum efi_timer_delay type,
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uint64_t trigger_time)
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|
{
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|
EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time);
|
|
return EFI_EXIT(efi_set_timer(event, type, trigger_time));
|
|
}
|
|
|
|
/*
|
|
* Wait for events to be signaled.
|
|
*
|
|
* This function implements the WaitForEvent service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @num_events number of events to be waited for
|
|
* @events events to be waited for
|
|
* @index index of the event that was signaled
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events,
|
|
struct efi_event **event,
|
|
size_t *index)
|
|
{
|
|
int i, j;
|
|
|
|
EFI_ENTRY("%ld, %p, %p", num_events, event, index);
|
|
|
|
/* Check parameters */
|
|
if (!num_events || !event)
|
|
return EFI_EXIT(EFI_INVALID_PARAMETER);
|
|
/* Check TPL */
|
|
if (efi_tpl != TPL_APPLICATION)
|
|
return EFI_EXIT(EFI_UNSUPPORTED);
|
|
for (i = 0; i < num_events; ++i) {
|
|
for (j = 0; j < ARRAY_SIZE(efi_events); ++j) {
|
|
if (event[i] == &efi_events[j])
|
|
goto known_event;
|
|
}
|
|
return EFI_EXIT(EFI_INVALID_PARAMETER);
|
|
known_event:
|
|
if (!event[i]->type || event[i]->type & EVT_NOTIFY_SIGNAL)
|
|
return EFI_EXIT(EFI_INVALID_PARAMETER);
|
|
if (!event[i]->is_signaled)
|
|
efi_signal_event(event[i]);
|
|
}
|
|
|
|
/* Wait for signal */
|
|
for (;;) {
|
|
for (i = 0; i < num_events; ++i) {
|
|
if (event[i]->is_signaled)
|
|
goto out;
|
|
}
|
|
/* Allow events to occur. */
|
|
efi_timer_check();
|
|
}
|
|
|
|
out:
|
|
/*
|
|
* Reset the signal which is passed to the caller to allow periodic
|
|
* events to occur.
|
|
*/
|
|
event[i]->is_signaled = false;
|
|
if (index)
|
|
*index = i;
|
|
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Signal an EFI event.
|
|
*
|
|
* This function implements the SignalEvent service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* This functions sets the signaled state of the event and queues the
|
|
* notification function for execution.
|
|
*
|
|
* @event event to signal
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event)
|
|
{
|
|
int i;
|
|
|
|
EFI_ENTRY("%p", event);
|
|
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
|
|
if (event != &efi_events[i])
|
|
continue;
|
|
if (event->is_signaled)
|
|
break;
|
|
event->is_signaled = true;
|
|
if (event->type & EVT_NOTIFY_SIGNAL)
|
|
efi_signal_event(event);
|
|
break;
|
|
}
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Close an EFI event.
|
|
*
|
|
* This function implements the CloseEvent service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @event event to close
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_close_event(struct efi_event *event)
|
|
{
|
|
int i;
|
|
|
|
EFI_ENTRY("%p", event);
|
|
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
|
|
if (event == &efi_events[i]) {
|
|
event->type = 0;
|
|
event->trigger_next = -1ULL;
|
|
event->is_queued = false;
|
|
event->is_signaled = false;
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
}
|
|
return EFI_EXIT(EFI_INVALID_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Check if an event is signaled.
|
|
*
|
|
* This function implements the CheckEvent service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* If an event is not signaled yet the notification function is queued.
|
|
*
|
|
* @event event to check
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_check_event(struct efi_event *event)
|
|
{
|
|
int i;
|
|
|
|
EFI_ENTRY("%p", event);
|
|
efi_timer_check();
|
|
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
|
|
if (event != &efi_events[i])
|
|
continue;
|
|
if (!event->type || event->type & EVT_NOTIFY_SIGNAL)
|
|
break;
|
|
if (!event->is_signaled)
|
|
efi_signal_event(event);
|
|
if (event->is_signaled)
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
return EFI_EXIT(EFI_NOT_READY);
|
|
}
|
|
return EFI_EXIT(EFI_INVALID_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Find the internal EFI object for a handle.
|
|
*
|
|
* @handle handle to find
|
|
* @return EFI object
|
|
*/
|
|
static struct efi_object *efi_search_obj(void *handle)
|
|
{
|
|
struct list_head *lhandle;
|
|
|
|
list_for_each(lhandle, &efi_obj_list) {
|
|
struct efi_object *efiobj;
|
|
|
|
efiobj = list_entry(lhandle, struct efi_object, link);
|
|
if (efiobj->handle == handle)
|
|
return efiobj;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Install protocol interface.
|
|
*
|
|
* This is the function for internal calls. For the API implementation of the
|
|
* InstallProtocolInterface service see function
|
|
* efi_install_protocol_interface_ext.
|
|
*
|
|
* @handle handle on which the protocol shall be installed
|
|
* @protocol GUID of the protocol to be installed
|
|
* @protocol_interface_type type of the interface to be installed,
|
|
* always EFI_NATIVE_INTERFACE
|
|
* @protocol_interface interface of the protocol implementation
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_install_protocol_interface(void **handle,
|
|
const efi_guid_t *protocol, int protocol_interface_type,
|
|
void *protocol_interface)
|
|
{
|
|
struct list_head *lhandle;
|
|
int i;
|
|
efi_status_t r;
|
|
|
|
if (!handle || !protocol ||
|
|
protocol_interface_type != EFI_NATIVE_INTERFACE) {
|
|
r = EFI_INVALID_PARAMETER;
|
|
goto out;
|
|
}
|
|
|
|
/* Create new handle if requested. */
|
|
if (!*handle) {
|
|
r = efi_create_handle(handle);
|
|
if (r != EFI_SUCCESS)
|
|
goto out;
|
|
}
|
|
/* Find object. */
|
|
list_for_each(lhandle, &efi_obj_list) {
|
|
struct efi_object *efiobj;
|
|
efiobj = list_entry(lhandle, struct efi_object, link);
|
|
|
|
if (efiobj->handle != *handle)
|
|
continue;
|
|
/* Check if protocol is already installed on the handle. */
|
|
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
|
|
struct efi_handler *handler = &efiobj->protocols[i];
|
|
|
|
if (!handler->guid)
|
|
continue;
|
|
if (!guidcmp(handler->guid, protocol)) {
|
|
r = EFI_INVALID_PARAMETER;
|
|
goto out;
|
|
}
|
|
}
|
|
/* Install protocol in first empty slot. */
|
|
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
|
|
struct efi_handler *handler = &efiobj->protocols[i];
|
|
|
|
if (handler->guid)
|
|
continue;
|
|
|
|
handler->guid = protocol;
|
|
handler->protocol_interface = protocol_interface;
|
|
r = EFI_SUCCESS;
|
|
goto out;
|
|
}
|
|
r = EFI_OUT_OF_RESOURCES;
|
|
goto out;
|
|
}
|
|
r = EFI_INVALID_PARAMETER;
|
|
out:
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Install protocol interface.
|
|
*
|
|
* This function implements the InstallProtocolInterface service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @handle handle on which the protocol shall be installed
|
|
* @protocol GUID of the protocol to be installed
|
|
* @protocol_interface_type type of the interface to be installed,
|
|
* always EFI_NATIVE_INTERFACE
|
|
* @protocol_interface interface of the protocol implementation
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_install_protocol_interface_ext(void **handle,
|
|
const efi_guid_t *protocol, int protocol_interface_type,
|
|
void *protocol_interface)
|
|
{
|
|
EFI_ENTRY("%p, %pUl, %d, %p", handle, protocol, protocol_interface_type,
|
|
protocol_interface);
|
|
|
|
return EFI_EXIT(efi_install_protocol_interface(handle, protocol,
|
|
protocol_interface_type,
|
|
protocol_interface));
|
|
}
|
|
|
|
/*
|
|
* Reinstall protocol interface.
|
|
*
|
|
* This function implements the ReinstallProtocolInterface service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @handle handle on which the protocol shall be
|
|
* reinstalled
|
|
* @protocol GUID of the protocol to be installed
|
|
* @old_interface interface to be removed
|
|
* @new_interface interface to be installed
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle,
|
|
const efi_guid_t *protocol, void *old_interface,
|
|
void *new_interface)
|
|
{
|
|
EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, old_interface,
|
|
new_interface);
|
|
return EFI_EXIT(EFI_ACCESS_DENIED);
|
|
}
|
|
|
|
/*
|
|
* Uninstall protocol interface.
|
|
*
|
|
* This is the function for internal calls. For the API implementation of the
|
|
* UninstallProtocolInterface service see function
|
|
* efi_uninstall_protocol_interface_ext.
|
|
*
|
|
* @handle handle from which the protocol shall be removed
|
|
* @protocol GUID of the protocol to be removed
|
|
* @protocol_interface interface to be removed
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle,
|
|
const efi_guid_t *protocol, void *protocol_interface)
|
|
{
|
|
struct list_head *lhandle;
|
|
int i;
|
|
efi_status_t r = EFI_NOT_FOUND;
|
|
|
|
if (!handle || !protocol) {
|
|
r = EFI_INVALID_PARAMETER;
|
|
goto out;
|
|
}
|
|
|
|
list_for_each(lhandle, &efi_obj_list) {
|
|
struct efi_object *efiobj;
|
|
efiobj = list_entry(lhandle, struct efi_object, link);
|
|
|
|
if (efiobj->handle != handle)
|
|
continue;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
|
|
struct efi_handler *handler = &efiobj->protocols[i];
|
|
const efi_guid_t *hprotocol = handler->guid;
|
|
|
|
if (!hprotocol)
|
|
continue;
|
|
if (!guidcmp(hprotocol, protocol)) {
|
|
if (handler->protocol_interface) {
|
|
r = EFI_ACCESS_DENIED;
|
|
} else {
|
|
handler->guid = 0;
|
|
r = EFI_SUCCESS;
|
|
}
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
out:
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Uninstall protocol interface.
|
|
*
|
|
* This function implements the UninstallProtocolInterface service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @handle handle from which the protocol shall be removed
|
|
* @protocol GUID of the protocol to be removed
|
|
* @protocol_interface interface to be removed
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_uninstall_protocol_interface_ext(void *handle,
|
|
const efi_guid_t *protocol, void *protocol_interface)
|
|
{
|
|
EFI_ENTRY("%p, %pUl, %p", handle, protocol, protocol_interface);
|
|
|
|
return EFI_EXIT(efi_uninstall_protocol_interface(handle, protocol,
|
|
protocol_interface));
|
|
}
|
|
|
|
/*
|
|
* Register an event for notification when a protocol is installed.
|
|
*
|
|
* This function implements the RegisterProtocolNotify service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @protocol GUID of the protocol whose installation shall be
|
|
* notified
|
|
* @event event to be signaled upon installation of the protocol
|
|
* @registration key for retrieving the registration information
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_register_protocol_notify(
|
|
const efi_guid_t *protocol,
|
|
struct efi_event *event,
|
|
void **registration)
|
|
{
|
|
EFI_ENTRY("%pUl, %p, %p", protocol, event, registration);
|
|
return EFI_EXIT(EFI_OUT_OF_RESOURCES);
|
|
}
|
|
|
|
/*
|
|
* Determine if an EFI handle implements a protocol.
|
|
*
|
|
* See the documentation of the LocateHandle service in the UEFI specification.
|
|
*
|
|
* @search_type selection criterion
|
|
* @protocol GUID of the protocol
|
|
* @search_key registration key
|
|
* @efiobj handle
|
|
* @return 0 if the handle implements the protocol
|
|
*/
|
|
static int efi_search(enum efi_locate_search_type search_type,
|
|
const efi_guid_t *protocol, void *search_key,
|
|
struct efi_object *efiobj)
|
|
{
|
|
int i;
|
|
|
|
switch (search_type) {
|
|
case all_handles:
|
|
return 0;
|
|
case by_register_notify:
|
|
return -1;
|
|
case by_protocol:
|
|
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
|
|
const efi_guid_t *guid = efiobj->protocols[i].guid;
|
|
if (guid && !guidcmp(guid, protocol))
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Locate handles implementing a protocol.
|
|
*
|
|
* This function is meant for U-Boot internal calls. For the API implementation
|
|
* of the LocateHandle service see efi_locate_handle_ext.
|
|
*
|
|
* @search_type selection criterion
|
|
* @protocol GUID of the protocol
|
|
* @search_key registration key
|
|
* @buffer_size size of the buffer to receive the handles in bytes
|
|
* @buffer buffer to receive the relevant handles
|
|
* @return status code
|
|
*/
|
|
static efi_status_t efi_locate_handle(
|
|
enum efi_locate_search_type search_type,
|
|
const efi_guid_t *protocol, void *search_key,
|
|
unsigned long *buffer_size, efi_handle_t *buffer)
|
|
{
|
|
struct list_head *lhandle;
|
|
unsigned long size = 0;
|
|
|
|
/* Count how much space we need */
|
|
list_for_each(lhandle, &efi_obj_list) {
|
|
struct efi_object *efiobj;
|
|
efiobj = list_entry(lhandle, struct efi_object, link);
|
|
if (!efi_search(search_type, protocol, search_key, efiobj)) {
|
|
size += sizeof(void*);
|
|
}
|
|
}
|
|
|
|
if (*buffer_size < size) {
|
|
*buffer_size = size;
|
|
return EFI_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
*buffer_size = size;
|
|
if (size == 0)
|
|
return EFI_NOT_FOUND;
|
|
|
|
/* Then fill the array */
|
|
list_for_each(lhandle, &efi_obj_list) {
|
|
struct efi_object *efiobj;
|
|
efiobj = list_entry(lhandle, struct efi_object, link);
|
|
if (!efi_search(search_type, protocol, search_key, efiobj)) {
|
|
*(buffer++) = efiobj->handle;
|
|
}
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Locate handles implementing a protocol.
|
|
*
|
|
* This function implements the LocateHandle service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @search_type selection criterion
|
|
* @protocol GUID of the protocol
|
|
* @search_key registration key
|
|
* @buffer_size size of the buffer to receive the handles in bytes
|
|
* @buffer buffer to receive the relevant handles
|
|
* @return 0 if the handle implements the protocol
|
|
*/
|
|
static efi_status_t EFIAPI efi_locate_handle_ext(
|
|
enum efi_locate_search_type search_type,
|
|
const efi_guid_t *protocol, void *search_key,
|
|
unsigned long *buffer_size, efi_handle_t *buffer)
|
|
{
|
|
EFI_ENTRY("%d, %pUl, %p, %p, %p", search_type, protocol, search_key,
|
|
buffer_size, buffer);
|
|
|
|
return EFI_EXIT(efi_locate_handle(search_type, protocol, search_key,
|
|
buffer_size, buffer));
|
|
}
|
|
|
|
/*
|
|
* Get the device path and handle of an device implementing a protocol.
|
|
*
|
|
* This function implements the LocateDevicePath service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @protocol GUID of the protocol
|
|
* @device_path device path
|
|
* @device handle of the device
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_locate_device_path(
|
|
const efi_guid_t *protocol,
|
|
struct efi_device_path **device_path,
|
|
efi_handle_t *device)
|
|
{
|
|
struct efi_object *efiobj;
|
|
|
|
EFI_ENTRY("%pUl, %p, %p", protocol, device_path, device);
|
|
|
|
efiobj = efi_dp_find_obj(*device_path, device_path);
|
|
if (!efiobj)
|
|
return EFI_EXIT(EFI_NOT_FOUND);
|
|
|
|
*device = efiobj->handle;
|
|
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/* Collapses configuration table entries, removing index i */
|
|
static void efi_remove_configuration_table(int i)
|
|
{
|
|
struct efi_configuration_table *this = &efi_conf_table[i];
|
|
struct efi_configuration_table *next = &efi_conf_table[i+1];
|
|
struct efi_configuration_table *end = &efi_conf_table[systab.nr_tables];
|
|
|
|
memmove(this, next, (ulong)end - (ulong)next);
|
|
systab.nr_tables--;
|
|
}
|
|
|
|
/*
|
|
* Adds, updates, or removes a configuration table.
|
|
*
|
|
* This function is used for internal calls. For the API implementation of the
|
|
* InstallConfigurationTable service see efi_install_configuration_table_ext.
|
|
*
|
|
* @guid GUID of the installed table
|
|
* @table table to be installed
|
|
* @return status code
|
|
*/
|
|
efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table)
|
|
{
|
|
int i;
|
|
|
|
/* Check for guid override */
|
|
for (i = 0; i < systab.nr_tables; i++) {
|
|
if (!guidcmp(guid, &efi_conf_table[i].guid)) {
|
|
if (table)
|
|
efi_conf_table[i].table = table;
|
|
else
|
|
efi_remove_configuration_table(i);
|
|
return EFI_SUCCESS;
|
|
}
|
|
}
|
|
|
|
if (!table)
|
|
return EFI_NOT_FOUND;
|
|
|
|
/* No override, check for overflow */
|
|
if (i >= ARRAY_SIZE(efi_conf_table))
|
|
return EFI_OUT_OF_RESOURCES;
|
|
|
|
/* Add a new entry */
|
|
memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid));
|
|
efi_conf_table[i].table = table;
|
|
systab.nr_tables = i + 1;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Adds, updates, or removes a configuration table.
|
|
*
|
|
* This function implements the InstallConfigurationTable service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @guid GUID of the installed table
|
|
* @table table to be installed
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid,
|
|
void *table)
|
|
{
|
|
EFI_ENTRY("%pUl, %p", guid, table);
|
|
return EFI_EXIT(efi_install_configuration_table(guid, table));
|
|
}
|
|
|
|
/*
|
|
* Initialize a loaded_image_info + loaded_image_info object with correct
|
|
* protocols, boot-device, etc.
|
|
*
|
|
* @info loaded image info to be passed to the entry point of the
|
|
* image
|
|
* @obj internal object associated with the loaded image
|
|
* @device_path device path of the loaded image
|
|
* @file_path file path of the loaded image
|
|
*/
|
|
void efi_setup_loaded_image(struct efi_loaded_image *info, struct efi_object *obj,
|
|
struct efi_device_path *device_path,
|
|
struct efi_device_path *file_path)
|
|
{
|
|
obj->handle = info;
|
|
|
|
/*
|
|
* When asking for the device path interface, return
|
|
* bootefi_device_path
|
|
*/
|
|
obj->protocols[0].guid = &efi_guid_device_path;
|
|
obj->protocols[0].protocol_interface = device_path;
|
|
|
|
/*
|
|
* When asking for the loaded_image interface, just
|
|
* return handle which points to loaded_image_info
|
|
*/
|
|
obj->protocols[1].guid = &efi_guid_loaded_image;
|
|
obj->protocols[1].protocol_interface = info;
|
|
|
|
obj->protocols[2].guid = &efi_guid_console_control;
|
|
obj->protocols[2].protocol_interface = (void *)&efi_console_control;
|
|
|
|
obj->protocols[3].guid = &efi_guid_device_path_to_text_protocol;
|
|
obj->protocols[3].protocol_interface =
|
|
(void *)&efi_device_path_to_text;
|
|
|
|
info->file_path = file_path;
|
|
if (device_path)
|
|
info->device_handle = efi_dp_find_obj(device_path, NULL);
|
|
|
|
list_add_tail(&obj->link, &efi_obj_list);
|
|
}
|
|
|
|
/*
|
|
* Load an image using a file path.
|
|
*
|
|
* @file_path the path of the image to load
|
|
* @buffer buffer containing the loaded image
|
|
* @return status code
|
|
*/
|
|
efi_status_t efi_load_image_from_path(struct efi_device_path *file_path,
|
|
void **buffer)
|
|
{
|
|
struct efi_file_info *info = NULL;
|
|
struct efi_file_handle *f;
|
|
static efi_status_t ret;
|
|
uint64_t bs;
|
|
|
|
f = efi_file_from_path(file_path);
|
|
if (!f)
|
|
return EFI_DEVICE_ERROR;
|
|
|
|
bs = 0;
|
|
EFI_CALL(ret = f->getinfo(f, (efi_guid_t *)&efi_file_info_guid,
|
|
&bs, info));
|
|
if (ret == EFI_BUFFER_TOO_SMALL) {
|
|
info = malloc(bs);
|
|
EFI_CALL(ret = f->getinfo(f, (efi_guid_t *)&efi_file_info_guid,
|
|
&bs, info));
|
|
}
|
|
if (ret != EFI_SUCCESS)
|
|
goto error;
|
|
|
|
ret = efi_allocate_pool(EFI_LOADER_DATA, info->file_size, buffer);
|
|
if (ret)
|
|
goto error;
|
|
|
|
EFI_CALL(ret = f->read(f, &info->file_size, *buffer));
|
|
|
|
error:
|
|
free(info);
|
|
EFI_CALL(f->close(f));
|
|
|
|
if (ret != EFI_SUCCESS) {
|
|
efi_free_pool(*buffer);
|
|
*buffer = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Load an EFI image into memory.
|
|
*
|
|
* This function implements the LoadImage service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @boot_policy true for request originating from the boot manager
|
|
* @parent_image the calles's image handle
|
|
* @file_path the path of the image to load
|
|
* @source_buffer memory location from which the image is installed
|
|
* @source_size size of the memory area from which the image is
|
|
* installed
|
|
* @image_handle handle for the newly installed image
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_load_image(bool boot_policy,
|
|
efi_handle_t parent_image,
|
|
struct efi_device_path *file_path,
|
|
void *source_buffer,
|
|
unsigned long source_size,
|
|
efi_handle_t *image_handle)
|
|
{
|
|
struct efi_loaded_image *info;
|
|
struct efi_object *obj;
|
|
|
|
EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image,
|
|
file_path, source_buffer, source_size, image_handle);
|
|
|
|
info = calloc(1, sizeof(*info));
|
|
obj = calloc(1, sizeof(*obj));
|
|
|
|
if (!source_buffer) {
|
|
struct efi_device_path *dp, *fp;
|
|
efi_status_t ret;
|
|
|
|
ret = efi_load_image_from_path(file_path, &source_buffer);
|
|
if (ret != EFI_SUCCESS) {
|
|
free(info);
|
|
free(obj);
|
|
return EFI_EXIT(ret);
|
|
}
|
|
|
|
/*
|
|
* split file_path which contains both the device and
|
|
* file parts:
|
|
*/
|
|
efi_dp_split_file_path(file_path, &dp, &fp);
|
|
|
|
efi_setup_loaded_image(info, obj, dp, fp);
|
|
} else {
|
|
/* In this case, file_path is the "device" path, ie.
|
|
* something like a HARDWARE_DEVICE:MEMORY_MAPPED
|
|
*/
|
|
efi_setup_loaded_image(info, obj, file_path, NULL);
|
|
}
|
|
|
|
info->reserved = efi_load_pe(source_buffer, info);
|
|
if (!info->reserved) {
|
|
free(info);
|
|
free(obj);
|
|
return EFI_EXIT(EFI_UNSUPPORTED);
|
|
}
|
|
|
|
*image_handle = info;
|
|
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Call the entry point of an image.
|
|
*
|
|
* This function implements the StartImage service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @image_handle handle of the image
|
|
* @exit_data_size size of the buffer
|
|
* @exit_data buffer to receive the exit data of the called image
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
|
|
unsigned long *exit_data_size,
|
|
s16 **exit_data)
|
|
{
|
|
ulong (*entry)(void *image_handle, struct efi_system_table *st);
|
|
struct efi_loaded_image *info = image_handle;
|
|
|
|
EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data);
|
|
entry = info->reserved;
|
|
|
|
efi_is_direct_boot = false;
|
|
|
|
/* call the image! */
|
|
if (setjmp(&info->exit_jmp)) {
|
|
/* We returned from the child image */
|
|
return EFI_EXIT(info->exit_status);
|
|
}
|
|
|
|
__efi_nesting_dec();
|
|
__efi_exit_check();
|
|
entry(image_handle, &systab);
|
|
__efi_entry_check();
|
|
__efi_nesting_inc();
|
|
|
|
/* Should usually never get here */
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Leave an EFI application or driver.
|
|
*
|
|
* This function implements the Exit service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @image_handle handle of the application or driver that is exiting
|
|
* @exit_status status code
|
|
* @exit_data_size size of the buffer in bytes
|
|
* @exit_data buffer with data describing an error
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle,
|
|
efi_status_t exit_status, unsigned long exit_data_size,
|
|
int16_t *exit_data)
|
|
{
|
|
struct efi_loaded_image *loaded_image_info = (void*)image_handle;
|
|
|
|
EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status,
|
|
exit_data_size, exit_data);
|
|
|
|
/* Make sure entry/exit counts for EFI world cross-overs match */
|
|
__efi_exit_check();
|
|
|
|
/*
|
|
* But longjmp out with the U-Boot gd, not the application's, as
|
|
* the other end is a setjmp call inside EFI context.
|
|
*/
|
|
efi_restore_gd();
|
|
|
|
loaded_image_info->exit_status = exit_status;
|
|
longjmp(&loaded_image_info->exit_jmp, 1);
|
|
|
|
panic("EFI application exited");
|
|
}
|
|
|
|
/*
|
|
* Unload an EFI image.
|
|
*
|
|
* This function implements the UnloadImage service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @image_handle handle of the image to be unloaded
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_unload_image(void *image_handle)
|
|
{
|
|
struct efi_object *efiobj;
|
|
|
|
EFI_ENTRY("%p", image_handle);
|
|
efiobj = efi_search_obj(image_handle);
|
|
if (efiobj)
|
|
list_del(&efiobj->link);
|
|
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Fix up caches for EFI payloads if necessary.
|
|
*/
|
|
static void efi_exit_caches(void)
|
|
{
|
|
#if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
|
|
/*
|
|
* Grub on 32bit ARM needs to have caches disabled before jumping into
|
|
* a zImage, but does not know of all cache layers. Give it a hand.
|
|
*/
|
|
if (efi_is_direct_boot)
|
|
cleanup_before_linux();
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Stop boot services.
|
|
*
|
|
* This function implements the ExitBootServices service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @image_handle handle of the loaded image
|
|
* @map_key key of the memory map
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle,
|
|
unsigned long map_key)
|
|
{
|
|
int i;
|
|
|
|
EFI_ENTRY("%p, %ld", image_handle, map_key);
|
|
|
|
/* Notify that ExitBootServices is invoked. */
|
|
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
|
|
if (efi_events[i].type != EVT_SIGNAL_EXIT_BOOT_SERVICES)
|
|
continue;
|
|
efi_signal_event(&efi_events[i]);
|
|
}
|
|
/* Make sure that notification functions are not called anymore */
|
|
efi_tpl = TPL_HIGH_LEVEL;
|
|
|
|
/* XXX Should persist EFI variables here */
|
|
|
|
board_quiesce_devices();
|
|
|
|
/* Fix up caches for EFI payloads if necessary */
|
|
efi_exit_caches();
|
|
|
|
/* This stops all lingering devices */
|
|
bootm_disable_interrupts();
|
|
|
|
/* Give the payload some time to boot */
|
|
efi_set_watchdog(0);
|
|
WATCHDOG_RESET();
|
|
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Get next value of the counter.
|
|
*
|
|
* This function implements the NextMonotonicCount service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @count returned value of the counter
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count)
|
|
{
|
|
static uint64_t mono = 0;
|
|
EFI_ENTRY("%p", count);
|
|
*count = mono++;
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Sleep.
|
|
*
|
|
* This function implements the Stall sercive.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @microseconds period to sleep in microseconds
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_stall(unsigned long microseconds)
|
|
{
|
|
EFI_ENTRY("%ld", microseconds);
|
|
udelay(microseconds);
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Reset the watchdog timer.
|
|
*
|
|
* This function implements the SetWatchdogTimer service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @timeout seconds before reset by watchdog
|
|
* @watchdog_code code to be logged when resetting
|
|
* @data_size size of buffer in bytes
|
|
* @watchdog_data buffer with data describing the reset reason
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout,
|
|
uint64_t watchdog_code,
|
|
unsigned long data_size,
|
|
uint16_t *watchdog_data)
|
|
{
|
|
EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code,
|
|
data_size, watchdog_data);
|
|
return EFI_EXIT(efi_set_watchdog(timeout));
|
|
}
|
|
|
|
/*
|
|
* Connect a controller to a driver.
|
|
*
|
|
* This function implements the ConnectController service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @controller_handle handle of the controller
|
|
* @driver_image_handle handle of the driver
|
|
* @remain_device_path device path of a child controller
|
|
* @recursive true to connect all child controllers
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_connect_controller(
|
|
efi_handle_t controller_handle,
|
|
efi_handle_t *driver_image_handle,
|
|
struct efi_device_path *remain_device_path,
|
|
bool recursive)
|
|
{
|
|
EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle,
|
|
remain_device_path, recursive);
|
|
return EFI_EXIT(EFI_NOT_FOUND);
|
|
}
|
|
|
|
/*
|
|
* Disconnect a controller from a driver.
|
|
*
|
|
* This function implements the DisconnectController service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @controller_handle handle of the controller
|
|
* @driver_image_handle handle of the driver
|
|
* @child_handle handle of the child to destroy
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle,
|
|
void *driver_image_handle,
|
|
void *child_handle)
|
|
{
|
|
EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle,
|
|
child_handle);
|
|
return EFI_EXIT(EFI_INVALID_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Close a protocol.
|
|
*
|
|
* This function implements the CloseProtocol service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @handle handle on which the protocol shall be closed
|
|
* @protocol GUID of the protocol to close
|
|
* @agent_handle handle of the driver
|
|
* @controller_handle handle of the controller
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_close_protocol(void *handle,
|
|
const efi_guid_t *protocol,
|
|
void *agent_handle,
|
|
void *controller_handle)
|
|
{
|
|
EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, agent_handle,
|
|
controller_handle);
|
|
return EFI_EXIT(EFI_NOT_FOUND);
|
|
}
|
|
|
|
/*
|
|
* Provide information about then open status of a protocol on a handle
|
|
*
|
|
* This function implements the OpenProtocolInformation service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @handle handle for which the information shall be retrieved
|
|
* @protocol GUID of the protocol
|
|
* @entry_buffer buffer to receive the open protocol information
|
|
* @entry_count number of entries available in the buffer
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle,
|
|
const efi_guid_t *protocol,
|
|
struct efi_open_protocol_info_entry **entry_buffer,
|
|
unsigned long *entry_count)
|
|
{
|
|
EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, entry_buffer,
|
|
entry_count);
|
|
return EFI_EXIT(EFI_NOT_FOUND);
|
|
}
|
|
|
|
/*
|
|
* Get protocols installed on a handle.
|
|
*
|
|
* This function implements the ProtocolsPerHandleService.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @handle handle for which the information is retrieved
|
|
* @protocol_buffer buffer with protocol GUIDs
|
|
* @protocol_buffer_count number of entries in the buffer
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_protocols_per_handle(void *handle,
|
|
efi_guid_t ***protocol_buffer,
|
|
unsigned long *protocol_buffer_count)
|
|
{
|
|
unsigned long buffer_size;
|
|
struct efi_object *efiobj;
|
|
unsigned long i, j;
|
|
struct list_head *lhandle;
|
|
efi_status_t r;
|
|
|
|
EFI_ENTRY("%p, %p, %p", handle, protocol_buffer,
|
|
protocol_buffer_count);
|
|
|
|
if (!handle || !protocol_buffer || !protocol_buffer_count)
|
|
return EFI_EXIT(EFI_INVALID_PARAMETER);
|
|
|
|
*protocol_buffer = NULL;
|
|
*protocol_buffer_count = 0;
|
|
list_for_each(lhandle, &efi_obj_list) {
|
|
efiobj = list_entry(lhandle, struct efi_object, link);
|
|
|
|
if (efiobj->handle != handle)
|
|
continue;
|
|
|
|
/* Count protocols */
|
|
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
|
|
if (efiobj->protocols[i].guid)
|
|
++*protocol_buffer_count;
|
|
}
|
|
/* Copy guids */
|
|
if (*protocol_buffer_count) {
|
|
buffer_size = sizeof(efi_guid_t *) *
|
|
*protocol_buffer_count;
|
|
r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
|
|
buffer_size,
|
|
(void **)protocol_buffer);
|
|
if (r != EFI_SUCCESS)
|
|
return EFI_EXIT(r);
|
|
j = 0;
|
|
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); ++i) {
|
|
if (efiobj->protocols[i].guid) {
|
|
(*protocol_buffer)[j] = (void *)
|
|
efiobj->protocols[i].guid;
|
|
++j;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Locate handles implementing a protocol.
|
|
*
|
|
* This function implements the LocateHandleBuffer service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @search_type selection criterion
|
|
* @protocol GUID of the protocol
|
|
* @search_key registration key
|
|
* @no_handles number of returned handles
|
|
* @buffer buffer with the returned handles
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_locate_handle_buffer(
|
|
enum efi_locate_search_type search_type,
|
|
const efi_guid_t *protocol, void *search_key,
|
|
unsigned long *no_handles, efi_handle_t **buffer)
|
|
{
|
|
efi_status_t r;
|
|
unsigned long buffer_size = 0;
|
|
|
|
EFI_ENTRY("%d, %pUl, %p, %p, %p", search_type, protocol, search_key,
|
|
no_handles, buffer);
|
|
|
|
if (!no_handles || !buffer) {
|
|
r = EFI_INVALID_PARAMETER;
|
|
goto out;
|
|
}
|
|
*no_handles = 0;
|
|
*buffer = NULL;
|
|
r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
|
|
*buffer);
|
|
if (r != EFI_BUFFER_TOO_SMALL)
|
|
goto out;
|
|
r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size,
|
|
(void **)buffer);
|
|
if (r != EFI_SUCCESS)
|
|
goto out;
|
|
r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
|
|
*buffer);
|
|
if (r == EFI_SUCCESS)
|
|
*no_handles = buffer_size / sizeof(void *);
|
|
out:
|
|
return EFI_EXIT(r);
|
|
}
|
|
|
|
/*
|
|
* Find an interface implementing a protocol.
|
|
*
|
|
* This function implements the LocateProtocol service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @protocol GUID of the protocol
|
|
* @registration registration key passed to the notification function
|
|
* @protocol_interface interface implementing the protocol
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_locate_protocol(const efi_guid_t *protocol,
|
|
void *registration,
|
|
void **protocol_interface)
|
|
{
|
|
struct list_head *lhandle;
|
|
int i;
|
|
|
|
EFI_ENTRY("%pUl, %p, %p", protocol, registration, protocol_interface);
|
|
|
|
if (!protocol || !protocol_interface)
|
|
return EFI_EXIT(EFI_INVALID_PARAMETER);
|
|
|
|
EFI_PRINT_GUID("protocol", protocol);
|
|
|
|
list_for_each(lhandle, &efi_obj_list) {
|
|
struct efi_object *efiobj;
|
|
|
|
efiobj = list_entry(lhandle, struct efi_object, link);
|
|
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
|
|
struct efi_handler *handler = &efiobj->protocols[i];
|
|
|
|
if (!handler->guid)
|
|
continue;
|
|
if (!guidcmp(handler->guid, protocol)) {
|
|
*protocol_interface =
|
|
handler->protocol_interface;
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
}
|
|
}
|
|
*protocol_interface = NULL;
|
|
|
|
return EFI_EXIT(EFI_NOT_FOUND);
|
|
}
|
|
|
|
/*
|
|
* Install multiple protocol interfaces.
|
|
*
|
|
* This function implements the MultipleProtocolInterfaces service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @handle handle on which the protocol interfaces shall be installed
|
|
* @... NULL terminated argument list with pairs of protocol GUIDS and
|
|
* interfaces
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces(
|
|
void **handle, ...)
|
|
{
|
|
EFI_ENTRY("%p", handle);
|
|
|
|
va_list argptr;
|
|
const efi_guid_t *protocol;
|
|
void *protocol_interface;
|
|
efi_status_t r = EFI_SUCCESS;
|
|
int i = 0;
|
|
|
|
if (!handle)
|
|
return EFI_EXIT(EFI_INVALID_PARAMETER);
|
|
|
|
va_start(argptr, handle);
|
|
for (;;) {
|
|
protocol = va_arg(argptr, efi_guid_t*);
|
|
if (!protocol)
|
|
break;
|
|
protocol_interface = va_arg(argptr, void*);
|
|
r = efi_install_protocol_interface(handle, protocol,
|
|
EFI_NATIVE_INTERFACE,
|
|
protocol_interface);
|
|
if (r != EFI_SUCCESS)
|
|
break;
|
|
i++;
|
|
}
|
|
va_end(argptr);
|
|
if (r == EFI_SUCCESS)
|
|
return EFI_EXIT(r);
|
|
|
|
/* If an error occured undo all changes. */
|
|
va_start(argptr, handle);
|
|
for (; i; --i) {
|
|
protocol = va_arg(argptr, efi_guid_t*);
|
|
protocol_interface = va_arg(argptr, void*);
|
|
efi_uninstall_protocol_interface(handle, protocol,
|
|
protocol_interface);
|
|
}
|
|
va_end(argptr);
|
|
|
|
return EFI_EXIT(r);
|
|
}
|
|
|
|
/*
|
|
* Uninstall multiple protocol interfaces.
|
|
*
|
|
* This function implements the UninstallMultipleProtocolInterfaces service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @handle handle from which the protocol interfaces shall be removed
|
|
* @... NULL terminated argument list with pairs of protocol GUIDS and
|
|
* interfaces
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces(
|
|
void *handle, ...)
|
|
{
|
|
EFI_ENTRY("%p", handle);
|
|
return EFI_EXIT(EFI_INVALID_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* Calculate cyclic redundancy code.
|
|
*
|
|
* This function implements the CalculateCrc32 service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @data buffer with data
|
|
* @data_size size of buffer in bytes
|
|
* @crc32_p cyclic redundancy code
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_calculate_crc32(void *data,
|
|
unsigned long data_size,
|
|
uint32_t *crc32_p)
|
|
{
|
|
EFI_ENTRY("%p, %ld", data, data_size);
|
|
*crc32_p = crc32(0, data, data_size);
|
|
return EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Copy memory.
|
|
*
|
|
* This function implements the CopyMem service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @destination destination of the copy operation
|
|
* @source source of the copy operation
|
|
* @length number of bytes to copy
|
|
*/
|
|
static void EFIAPI efi_copy_mem(void *destination, const void *source,
|
|
size_t length)
|
|
{
|
|
EFI_ENTRY("%p, %p, %ld", destination, source, (unsigned long)length);
|
|
memcpy(destination, source, length);
|
|
EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Fill memory with a byte value.
|
|
*
|
|
* This function implements the SetMem service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @buffer buffer to fill
|
|
* @size size of buffer in bytes
|
|
* @value byte to copy to the buffer
|
|
*/
|
|
static void EFIAPI efi_set_mem(void *buffer, size_t size, uint8_t value)
|
|
{
|
|
EFI_ENTRY("%p, %ld, 0x%x", buffer, (unsigned long)size, value);
|
|
memset(buffer, value, size);
|
|
EFI_EXIT(EFI_SUCCESS);
|
|
}
|
|
|
|
/*
|
|
* Open protocol interface on a handle.
|
|
*
|
|
* This function implements the OpenProtocol interface.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @handle handle on which the protocol shall be opened
|
|
* @protocol GUID of the protocol
|
|
* @protocol_interface interface implementing the protocol
|
|
* @agent_handle handle of the driver
|
|
* @controller_handle handle of the controller
|
|
* @attributes attributes indicating how to open the protocol
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_open_protocol(
|
|
void *handle, const efi_guid_t *protocol,
|
|
void **protocol_interface, void *agent_handle,
|
|
void *controller_handle, uint32_t attributes)
|
|
{
|
|
struct list_head *lhandle;
|
|
int i;
|
|
efi_status_t r = EFI_INVALID_PARAMETER;
|
|
|
|
EFI_ENTRY("%p, %pUl, %p, %p, %p, 0x%x", handle, protocol,
|
|
protocol_interface, agent_handle, controller_handle,
|
|
attributes);
|
|
|
|
if (!handle || !protocol ||
|
|
(!protocol_interface && attributes !=
|
|
EFI_OPEN_PROTOCOL_TEST_PROTOCOL)) {
|
|
goto out;
|
|
}
|
|
|
|
EFI_PRINT_GUID("protocol", protocol);
|
|
|
|
switch (attributes) {
|
|
case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL:
|
|
case EFI_OPEN_PROTOCOL_GET_PROTOCOL:
|
|
case EFI_OPEN_PROTOCOL_TEST_PROTOCOL:
|
|
break;
|
|
case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER:
|
|
if (controller_handle == handle)
|
|
goto out;
|
|
case EFI_OPEN_PROTOCOL_BY_DRIVER:
|
|
case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE:
|
|
if (controller_handle == NULL)
|
|
goto out;
|
|
case EFI_OPEN_PROTOCOL_EXCLUSIVE:
|
|
if (agent_handle == NULL)
|
|
goto out;
|
|
break;
|
|
default:
|
|
goto out;
|
|
}
|
|
|
|
list_for_each(lhandle, &efi_obj_list) {
|
|
struct efi_object *efiobj;
|
|
efiobj = list_entry(lhandle, struct efi_object, link);
|
|
|
|
if (efiobj->handle != handle)
|
|
continue;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
|
|
struct efi_handler *handler = &efiobj->protocols[i];
|
|
const efi_guid_t *hprotocol = handler->guid;
|
|
if (!hprotocol)
|
|
continue;
|
|
if (!guidcmp(hprotocol, protocol)) {
|
|
if (attributes !=
|
|
EFI_OPEN_PROTOCOL_TEST_PROTOCOL) {
|
|
*protocol_interface =
|
|
handler->protocol_interface;
|
|
}
|
|
r = EFI_SUCCESS;
|
|
goto out;
|
|
}
|
|
}
|
|
goto unsupported;
|
|
}
|
|
|
|
unsupported:
|
|
r = EFI_UNSUPPORTED;
|
|
out:
|
|
return EFI_EXIT(r);
|
|
}
|
|
|
|
/*
|
|
* Get interface of a protocol on a handle.
|
|
*
|
|
* This function implements the HandleProtocol service.
|
|
* See the Unified Extensible Firmware Interface (UEFI) specification
|
|
* for details.
|
|
*
|
|
* @handle handle on which the protocol shall be opened
|
|
* @protocol GUID of the protocol
|
|
* @protocol_interface interface implementing the protocol
|
|
* @return status code
|
|
*/
|
|
static efi_status_t EFIAPI efi_handle_protocol(void *handle,
|
|
const efi_guid_t *protocol,
|
|
void **protocol_interface)
|
|
{
|
|
return efi_open_protocol(handle, protocol, protocol_interface, NULL,
|
|
NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL);
|
|
}
|
|
|
|
static const struct efi_boot_services efi_boot_services = {
|
|
.hdr = {
|
|
.headersize = sizeof(struct efi_table_hdr),
|
|
},
|
|
.raise_tpl = efi_raise_tpl,
|
|
.restore_tpl = efi_restore_tpl,
|
|
.allocate_pages = efi_allocate_pages_ext,
|
|
.free_pages = efi_free_pages_ext,
|
|
.get_memory_map = efi_get_memory_map_ext,
|
|
.allocate_pool = efi_allocate_pool_ext,
|
|
.free_pool = efi_free_pool_ext,
|
|
.create_event = efi_create_event_ext,
|
|
.set_timer = efi_set_timer_ext,
|
|
.wait_for_event = efi_wait_for_event,
|
|
.signal_event = efi_signal_event_ext,
|
|
.close_event = efi_close_event,
|
|
.check_event = efi_check_event,
|
|
.install_protocol_interface = efi_install_protocol_interface_ext,
|
|
.reinstall_protocol_interface = efi_reinstall_protocol_interface,
|
|
.uninstall_protocol_interface = efi_uninstall_protocol_interface_ext,
|
|
.handle_protocol = efi_handle_protocol,
|
|
.reserved = NULL,
|
|
.register_protocol_notify = efi_register_protocol_notify,
|
|
.locate_handle = efi_locate_handle_ext,
|
|
.locate_device_path = efi_locate_device_path,
|
|
.install_configuration_table = efi_install_configuration_table_ext,
|
|
.load_image = efi_load_image,
|
|
.start_image = efi_start_image,
|
|
.exit = efi_exit,
|
|
.unload_image = efi_unload_image,
|
|
.exit_boot_services = efi_exit_boot_services,
|
|
.get_next_monotonic_count = efi_get_next_monotonic_count,
|
|
.stall = efi_stall,
|
|
.set_watchdog_timer = efi_set_watchdog_timer,
|
|
.connect_controller = efi_connect_controller,
|
|
.disconnect_controller = efi_disconnect_controller,
|
|
.open_protocol = efi_open_protocol,
|
|
.close_protocol = efi_close_protocol,
|
|
.open_protocol_information = efi_open_protocol_information,
|
|
.protocols_per_handle = efi_protocols_per_handle,
|
|
.locate_handle_buffer = efi_locate_handle_buffer,
|
|
.locate_protocol = efi_locate_protocol,
|
|
.install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces,
|
|
.uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces,
|
|
.calculate_crc32 = efi_calculate_crc32,
|
|
.copy_mem = efi_copy_mem,
|
|
.set_mem = efi_set_mem,
|
|
};
|
|
|
|
|
|
static uint16_t __efi_runtime_data firmware_vendor[] =
|
|
{ 'D','a','s',' ','U','-','b','o','o','t',0 };
|
|
|
|
struct efi_system_table __efi_runtime_data systab = {
|
|
.hdr = {
|
|
.signature = EFI_SYSTEM_TABLE_SIGNATURE,
|
|
.revision = 0x20005, /* 2.5 */
|
|
.headersize = sizeof(struct efi_table_hdr),
|
|
},
|
|
.fw_vendor = (long)firmware_vendor,
|
|
.con_in = (void*)&efi_con_in,
|
|
.con_out = (void*)&efi_con_out,
|
|
.std_err = (void*)&efi_con_out,
|
|
.runtime = (void*)&efi_runtime_services,
|
|
.boottime = (void*)&efi_boot_services,
|
|
.nr_tables = 0,
|
|
.tables = (void*)efi_conf_table,
|
|
};
|