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https://github.com/brain-hackers/u-boot-brain
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![Bin Meng](/assets/img/avatar_default.png)
This adds a new HOB type for graphics information introduced in FSP spec 1.1. When graphics capability is included in FSP and enabled, FSP produces an FSP_GRAPHICS_INFO_HOB as described in the EFI PI specification which provides information about the graphics mode and framebuffer. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
435 lines
11 KiB
C
435 lines
11 KiB
C
/*
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* Copyright (C) 2013, Intel Corporation
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* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
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*
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* SPDX-License-Identifier: Intel
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*/
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#include <common.h>
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#include <asm/fsp/fsp_support.h>
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#include <asm/post.h>
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/**
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* Compares two GUIDs
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*
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* If the GUIDs are identical then true is returned.
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* If there are any bit differences in the two GUIDs, then false is returned.
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*
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* @guid1: A pointer to a 128 bit GUID.
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* @guid2: A pointer to a 128 bit GUID.
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*
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* @retval true: guid1 and guid2 are identical.
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* @retval false: guid1 and guid2 are not identical.
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*/
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static bool compare_guid(const struct efi_guid *guid1,
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const struct efi_guid *guid2)
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{
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if (memcmp(guid1, guid2, sizeof(struct efi_guid)) == 0)
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return true;
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else
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return false;
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}
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struct fsp_header *__attribute__((optimize("O0"))) find_fsp_header(void)
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{
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/*
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* This function may be called before the a stack is established,
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* so special care must be taken. First, it cannot declare any local
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* variable using stack. Only register variable can be used here.
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* Secondly, some compiler version will add prolog or epilog code
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* for the C function. If so the function call may not work before
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* stack is ready.
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*
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* GCC 4.8.1 has been verified to be working for the following codes.
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*/
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volatile register u8 *fsp asm("eax");
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/* Initalize the FSP base */
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fsp = (u8 *)CONFIG_FSP_ADDR;
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/* Check the FV signature, _FVH */
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if (((struct fv_header *)fsp)->sign == EFI_FVH_SIGNATURE) {
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/* Go to the end of the FV header and align the address */
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fsp += ((struct fv_header *)fsp)->ext_hdr_off;
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fsp += ((struct fv_ext_header *)fsp)->ext_hdr_size;
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fsp = (u8 *)(((u32)fsp + 7) & 0xFFFFFFF8);
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} else {
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fsp = 0;
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}
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/* Check the FFS GUID */
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if (fsp &&
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((struct ffs_file_header *)fsp)->name.data1 == FSP_GUID_DATA1 &&
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((struct ffs_file_header *)fsp)->name.data2 == FSP_GUID_DATA2 &&
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((struct ffs_file_header *)fsp)->name.data3 == FSP_GUID_DATA3 &&
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((struct ffs_file_header *)fsp)->name.data4[0] == FSP_GUID_DATA4_0 &&
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((struct ffs_file_header *)fsp)->name.data4[1] == FSP_GUID_DATA4_1 &&
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((struct ffs_file_header *)fsp)->name.data4[2] == FSP_GUID_DATA4_2 &&
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((struct ffs_file_header *)fsp)->name.data4[3] == FSP_GUID_DATA4_3 &&
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((struct ffs_file_header *)fsp)->name.data4[4] == FSP_GUID_DATA4_4 &&
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((struct ffs_file_header *)fsp)->name.data4[5] == FSP_GUID_DATA4_5 &&
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((struct ffs_file_header *)fsp)->name.data4[6] == FSP_GUID_DATA4_6 &&
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((struct ffs_file_header *)fsp)->name.data4[7] == FSP_GUID_DATA4_7) {
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/* Add the FFS header size to find the raw section header */
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fsp += sizeof(struct ffs_file_header);
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} else {
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fsp = 0;
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}
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if (fsp &&
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((struct raw_section *)fsp)->type == EFI_SECTION_RAW) {
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/* Add the raw section header size to find the FSP header */
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fsp += sizeof(struct raw_section);
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} else {
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fsp = 0;
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}
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return (struct fsp_header *)fsp;
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}
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void fsp_continue(u32 status, void *hob_list)
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{
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post_code(POST_MRC);
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assert(status == 0);
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/* The boot loader main function entry */
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fsp_init_done(hob_list);
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}
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void fsp_init(u32 stack_top, u32 boot_mode, void *nvs_buf)
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{
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struct fsp_config_data config_data;
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fsp_init_f init;
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struct fsp_init_params params;
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struct fspinit_rtbuf rt_buf;
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struct fsp_header *fsp_hdr;
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struct fsp_init_params *params_ptr;
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#ifdef CONFIG_FSP_USE_UPD
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struct vpd_region *fsp_vpd;
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struct upd_region *fsp_upd;
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#endif
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fsp_hdr = find_fsp_header();
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if (fsp_hdr == NULL) {
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/* No valid FSP info header was found */
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panic("Invalid FSP header");
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}
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config_data.common.fsp_hdr = fsp_hdr;
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config_data.common.stack_top = stack_top;
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config_data.common.boot_mode = boot_mode;
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#ifdef CONFIG_FSP_USE_UPD
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/* Get VPD region start */
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fsp_vpd = (struct vpd_region *)(fsp_hdr->img_base +
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fsp_hdr->cfg_region_off);
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/* Verify the VPD data region is valid */
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assert(fsp_vpd->sign == VPD_IMAGE_ID);
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fsp_upd = &config_data.fsp_upd;
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/* Copy default data from Flash */
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memcpy(fsp_upd, (void *)(fsp_hdr->img_base + fsp_vpd->upd_offset),
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sizeof(struct upd_region));
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/* Verify the UPD data region is valid */
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assert(fsp_upd->terminator == UPD_TERMINATOR);
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#endif
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memset(&rt_buf, 0, sizeof(struct fspinit_rtbuf));
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/* Override any configuration if required */
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update_fsp_configs(&config_data, &rt_buf);
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memset(¶ms, 0, sizeof(struct fsp_init_params));
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params.nvs_buf = nvs_buf;
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params.rt_buf = (struct fspinit_rtbuf *)&rt_buf;
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params.continuation = (fsp_continuation_f)asm_continuation;
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init = (fsp_init_f)(fsp_hdr->img_base + fsp_hdr->fsp_init);
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params_ptr = ¶ms;
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post_code(POST_PRE_MRC);
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/* Load GDT for FSP */
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setup_fsp_gdt();
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/*
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* Use ASM code to ensure the register value in EAX & EDX
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* will be passed into fsp_continue
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*/
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asm volatile (
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"pushl %0;"
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"call *%%eax;"
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".global asm_continuation;"
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"asm_continuation:;"
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"movl 4(%%esp), %%eax;" /* status */
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"movl 8(%%esp), %%edx;" /* hob_list */
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"jmp fsp_continue;"
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: : "m"(params_ptr), "a"(init)
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);
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/*
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* Should never get here.
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* Control will continue from fsp_continue.
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* This line below is to prevent the compiler from optimizing
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* structure intialization.
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*
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* DO NOT REMOVE!
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*/
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init(¶ms);
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}
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u32 fsp_notify(struct fsp_header *fsp_hdr, u32 phase)
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{
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fsp_notify_f notify;
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struct fsp_notify_params params;
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struct fsp_notify_params *params_ptr;
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u32 status;
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if (!fsp_hdr)
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fsp_hdr = (struct fsp_header *)find_fsp_header();
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if (fsp_hdr == NULL) {
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/* No valid FSP info header */
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panic("Invalid FSP header");
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}
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notify = (fsp_notify_f)(fsp_hdr->img_base + fsp_hdr->fsp_notify);
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params.phase = phase;
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params_ptr = ¶ms;
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/*
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* Use ASM code to ensure correct parameter is on the stack for
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* FspNotify as U-Boot is using different ABI from FSP
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*/
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asm volatile (
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"pushl %1;" /* push notify phase */
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"call *%%eax;" /* call FspNotify */
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"addl $4, %%esp;" /* clean up the stack */
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: "=a"(status) : "m"(params_ptr), "a"(notify), "m"(*params_ptr)
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);
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return status;
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}
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u32 fsp_get_usable_lowmem_top(const void *hob_list)
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{
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const struct hob_header *hdr;
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struct hob_res_desc *res_desc;
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phys_addr_t phys_start;
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u32 top;
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#ifdef CONFIG_FSP_BROKEN_HOB
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struct hob_mem_alloc *res_mem;
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phys_addr_t mem_base = 0;
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#endif
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/* Get the HOB list for processing */
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hdr = hob_list;
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/* * Collect memory ranges */
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top = FSP_LOWMEM_BASE;
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while (!end_of_hob(hdr)) {
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if (hdr->type == HOB_TYPE_RES_DESC) {
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res_desc = (struct hob_res_desc *)hdr;
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if (res_desc->type == RES_SYS_MEM) {
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phys_start = res_desc->phys_start;
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/* Need memory above 1MB to be collected here */
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if (phys_start >= FSP_LOWMEM_BASE &&
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phys_start < (phys_addr_t)FSP_HIGHMEM_BASE)
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top += (u32)(res_desc->len);
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}
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}
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#ifdef CONFIG_FSP_BROKEN_HOB
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/*
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* Find out the lowest memory base address allocated by FSP
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* for the boot service data
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*/
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if (hdr->type == HOB_TYPE_MEM_ALLOC) {
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res_mem = (struct hob_mem_alloc *)hdr;
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if (!mem_base)
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mem_base = res_mem->mem_base;
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if (res_mem->mem_base < mem_base)
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mem_base = res_mem->mem_base;
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}
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#endif
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hdr = get_next_hob(hdr);
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}
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#ifdef CONFIG_FSP_BROKEN_HOB
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/*
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* Check whether the memory top address is below the FSP HOB list.
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* If not, use the lowest memory base address allocated by FSP as
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* the memory top address. This is to prevent U-Boot relocation
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* overwrites the important boot service data which is used by FSP,
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* otherwise the subsequent call to fsp_notify() will fail.
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*/
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if (top > (u32)hob_list) {
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debug("Adjust memory top address due to a buggy FSP\n");
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top = (u32)mem_base;
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}
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#endif
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return top;
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}
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u64 fsp_get_usable_highmem_top(const void *hob_list)
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{
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const struct hob_header *hdr;
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struct hob_res_desc *res_desc;
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phys_addr_t phys_start;
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u64 top;
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/* Get the HOB list for processing */
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hdr = hob_list;
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/* Collect memory ranges */
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top = FSP_HIGHMEM_BASE;
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while (!end_of_hob(hdr)) {
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if (hdr->type == HOB_TYPE_RES_DESC) {
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res_desc = (struct hob_res_desc *)hdr;
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if (res_desc->type == RES_SYS_MEM) {
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phys_start = res_desc->phys_start;
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/* Need memory above 4GB to be collected here */
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if (phys_start >= (phys_addr_t)FSP_HIGHMEM_BASE)
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top += (u32)(res_desc->len);
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}
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}
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hdr = get_next_hob(hdr);
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}
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return top;
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}
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u64 fsp_get_reserved_mem_from_guid(const void *hob_list, u64 *len,
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struct efi_guid *guid)
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{
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const struct hob_header *hdr;
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struct hob_res_desc *res_desc;
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/* Get the HOB list for processing */
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hdr = hob_list;
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/* Collect memory ranges */
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while (!end_of_hob(hdr)) {
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if (hdr->type == HOB_TYPE_RES_DESC) {
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res_desc = (struct hob_res_desc *)hdr;
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if (res_desc->type == RES_MEM_RESERVED) {
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if (compare_guid(&res_desc->owner, guid)) {
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if (len)
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*len = (u32)(res_desc->len);
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return (u64)(res_desc->phys_start);
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}
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}
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}
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hdr = get_next_hob(hdr);
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}
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return 0;
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}
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u32 fsp_get_fsp_reserved_mem(const void *hob_list, u32 *len)
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{
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const struct efi_guid guid = FSP_HOB_RESOURCE_OWNER_FSP_GUID;
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u64 length;
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u32 base;
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base = (u32)fsp_get_reserved_mem_from_guid(hob_list,
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&length, (struct efi_guid *)&guid);
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if ((len != 0) && (base != 0))
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*len = (u32)length;
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return base;
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}
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u32 fsp_get_tseg_reserved_mem(const void *hob_list, u32 *len)
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{
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const struct efi_guid guid = FSP_HOB_RESOURCE_OWNER_TSEG_GUID;
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u64 length;
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u32 base;
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base = (u32)fsp_get_reserved_mem_from_guid(hob_list,
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&length, (struct efi_guid *)&guid);
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if ((len != 0) && (base != 0))
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*len = (u32)length;
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return base;
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}
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const struct hob_header *fsp_get_next_hob(uint type, const void *hob_list)
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{
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const struct hob_header *hdr;
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hdr = hob_list;
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/* Parse the HOB list until end of list or matching type is found */
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while (!end_of_hob(hdr)) {
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if (hdr->type == type)
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return hdr;
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hdr = get_next_hob(hdr);
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}
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return NULL;
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}
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const struct hob_header *fsp_get_next_guid_hob(const struct efi_guid *guid,
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const void *hob_list)
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{
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const struct hob_header *hdr;
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struct hob_guid *guid_hob;
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hdr = hob_list;
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while ((hdr = fsp_get_next_hob(HOB_TYPE_GUID_EXT,
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hdr)) != NULL) {
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guid_hob = (struct hob_guid *)hdr;
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if (compare_guid(guid, &(guid_hob->name)))
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break;
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hdr = get_next_hob(hdr);
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}
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return hdr;
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}
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void *fsp_get_guid_hob_data(const void *hob_list, u32 *len,
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struct efi_guid *guid)
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{
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const struct hob_header *guid_hob;
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guid_hob = fsp_get_next_guid_hob(guid, hob_list);
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if (guid_hob == NULL) {
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return NULL;
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} else {
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if (len)
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*len = get_guid_hob_data_size(guid_hob);
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return get_guid_hob_data(guid_hob);
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}
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}
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void *fsp_get_nvs_data(const void *hob_list, u32 *len)
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{
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const struct efi_guid guid = FSP_NON_VOLATILE_STORAGE_HOB_GUID;
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return fsp_get_guid_hob_data(hob_list, len, (struct efi_guid *)&guid);
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}
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void *fsp_get_bootloader_tmp_mem(const void *hob_list, u32 *len)
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{
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const struct efi_guid guid = FSP_BOOTLOADER_TEMP_MEM_HOB_GUID;
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return fsp_get_guid_hob_data(hob_list, len, (struct efi_guid *)&guid);
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}
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void *fsp_get_graphics_info(const void *hob_list, u32 *len)
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{
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const struct efi_guid guid = FSP_GRAPHICS_INFO_HOB_GUID;
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return fsp_get_guid_hob_data(hob_list, len, (struct efi_guid *)&guid);
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}
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