mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-21 17:38:51 +09:00
![Rick Altherr](/assets/img/avatar_default.png)
In 35fc84f
, bootm was refactored so plain 'bootm' and
'bootm <subcommand>' shared a common implementation.
The 'bootm ramdisk' command implementation is now part of the common
implementation but not invoke by plain 'bootm' since the original
implementation never did ramdisk relocation. Instead, ramdisk
relocation happened in image_setup_linux() which is typically called
during the OS portion of 'bootm'.
On ARM, parameters to the Linux kernel can either be passed by FDT or
ATAGS. When using FDT, image_setup_linux() is called which also triggers
ramdisk relocation. When using ATAGS, image_setup_linux() is _not_
called because it mostly does FDT setup.
Instead of calling image_setup_linux() in both FDT and ATAGS cases,
include BOOTM_STATE_RAMDISK in the requested states during a plain
'bootm' if CONFIG_SYS_BOOT_RAMDISK_HIGH is set and remove the ramdisk
relocation from image_setup_linux(). This causes ramdisk relocation to
happen on any system where CONFIG_SYS_BOOT_RAMDISK_HIGH regardless of
the OS being booted. Also remove IMAGE_ENABLE_RAMDISK_HIGH as it was
only used by the now-removed code from image_setup_linux().
Signed-off-by: Rick Altherr <raltherr@google.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
541 lines
13 KiB
C
541 lines
13 KiB
C
/*
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* (C) Copyright 2000-2009
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* Boot support
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*/
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#include <common.h>
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#include <bootm.h>
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#include <command.h>
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#include <environment.h>
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#include <errno.h>
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#include <image.h>
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#include <malloc.h>
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#include <nand.h>
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#include <asm/byteorder.h>
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#include <linux/ctype.h>
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#include <linux/err.h>
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#include <u-boot/zlib.h>
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DECLARE_GLOBAL_DATA_PTR;
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#if defined(CONFIG_CMD_IMI)
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static int image_info(unsigned long addr);
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#endif
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#if defined(CONFIG_CMD_IMLS)
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#include <flash.h>
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#include <mtd/cfi_flash.h>
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extern flash_info_t flash_info[]; /* info for FLASH chips */
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#endif
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#if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
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static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
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#endif
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/* we overload the cmd field with our state machine info instead of a
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* function pointer */
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static cmd_tbl_t cmd_bootm_sub[] = {
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U_BOOT_CMD_MKENT(start, 0, 1, (void *)BOOTM_STATE_START, "", ""),
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U_BOOT_CMD_MKENT(loados, 0, 1, (void *)BOOTM_STATE_LOADOS, "", ""),
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#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
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U_BOOT_CMD_MKENT(ramdisk, 0, 1, (void *)BOOTM_STATE_RAMDISK, "", ""),
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#endif
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#ifdef CONFIG_OF_LIBFDT
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U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)BOOTM_STATE_FDT, "", ""),
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#endif
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U_BOOT_CMD_MKENT(cmdline, 0, 1, (void *)BOOTM_STATE_OS_CMDLINE, "", ""),
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U_BOOT_CMD_MKENT(bdt, 0, 1, (void *)BOOTM_STATE_OS_BD_T, "", ""),
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U_BOOT_CMD_MKENT(prep, 0, 1, (void *)BOOTM_STATE_OS_PREP, "", ""),
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U_BOOT_CMD_MKENT(fake, 0, 1, (void *)BOOTM_STATE_OS_FAKE_GO, "", ""),
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U_BOOT_CMD_MKENT(go, 0, 1, (void *)BOOTM_STATE_OS_GO, "", ""),
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};
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static int do_bootm_subcommand(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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int ret = 0;
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long state;
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cmd_tbl_t *c;
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c = find_cmd_tbl(argv[0], &cmd_bootm_sub[0], ARRAY_SIZE(cmd_bootm_sub));
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argc--; argv++;
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if (c) {
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state = (long)c->cmd;
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if (state == BOOTM_STATE_START)
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state |= BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER;
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} else {
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/* Unrecognized command */
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return CMD_RET_USAGE;
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}
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if (((state & BOOTM_STATE_START) != BOOTM_STATE_START) &&
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images.state >= state) {
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printf("Trying to execute a command out of order\n");
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return CMD_RET_USAGE;
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}
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ret = do_bootm_states(cmdtp, flag, argc, argv, state, &images, 0);
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return ret;
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}
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/*******************************************************************/
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/* bootm - boot application image from image in memory */
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/*******************************************************************/
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int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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#ifdef CONFIG_NEEDS_MANUAL_RELOC
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static int relocated = 0;
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if (!relocated) {
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int i;
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/* relocate names of sub-command table */
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for (i = 0; i < ARRAY_SIZE(cmd_bootm_sub); i++)
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cmd_bootm_sub[i].name += gd->reloc_off;
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relocated = 1;
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}
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#endif
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/* determine if we have a sub command */
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argc--; argv++;
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if (argc > 0) {
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char *endp;
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simple_strtoul(argv[0], &endp, 16);
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/* endp pointing to NULL means that argv[0] was just a
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* valid number, pass it along to the normal bootm processing
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*
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* If endp is ':' or '#' assume a FIT identifier so pass
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* along for normal processing.
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*
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* Right now we assume the first arg should never be '-'
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*/
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if ((*endp != 0) && (*endp != ':') && (*endp != '#'))
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return do_bootm_subcommand(cmdtp, flag, argc, argv);
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}
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return do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START |
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BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER |
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BOOTM_STATE_LOADOS |
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#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
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BOOTM_STATE_RAMDISK |
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#endif
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#if defined(CONFIG_PPC) || defined(CONFIG_MIPS)
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BOOTM_STATE_OS_CMDLINE |
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#endif
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BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
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BOOTM_STATE_OS_GO, &images, 1);
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}
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int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd)
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{
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const char *ep = getenv("autostart");
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if (ep && !strcmp(ep, "yes")) {
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char *local_args[2];
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local_args[0] = (char *)cmd;
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local_args[1] = NULL;
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printf("Automatic boot of image at addr 0x%08lX ...\n", load_addr);
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return do_bootm(cmdtp, 0, 1, local_args);
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}
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return 0;
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}
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#ifdef CONFIG_SYS_LONGHELP
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static char bootm_help_text[] =
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"[addr [arg ...]]\n - boot application image stored in memory\n"
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"\tpassing arguments 'arg ...'; when booting a Linux kernel,\n"
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"\t'arg' can be the address of an initrd image\n"
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#if defined(CONFIG_OF_LIBFDT)
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"\tWhen booting a Linux kernel which requires a flat device-tree\n"
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"\ta third argument is required which is the address of the\n"
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"\tdevice-tree blob. To boot that kernel without an initrd image,\n"
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"\tuse a '-' for the second argument. If you do not pass a third\n"
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"\ta bd_info struct will be passed instead\n"
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#endif
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#if defined(CONFIG_FIT)
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"\t\nFor the new multi component uImage format (FIT) addresses\n"
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"\tmust be extended to include component or configuration unit name:\n"
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"\taddr:<subimg_uname> - direct component image specification\n"
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"\taddr#<conf_uname> - configuration specification\n"
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"\tUse iminfo command to get the list of existing component\n"
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"\timages and configurations.\n"
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#endif
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"\nSub-commands to do part of the bootm sequence. The sub-commands "
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"must be\n"
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"issued in the order below (it's ok to not issue all sub-commands):\n"
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"\tstart [addr [arg ...]]\n"
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"\tloados - load OS image\n"
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#if defined(CONFIG_SYS_BOOT_RAMDISK_HIGH)
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"\tramdisk - relocate initrd, set env initrd_start/initrd_end\n"
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#endif
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#if defined(CONFIG_OF_LIBFDT)
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"\tfdt - relocate flat device tree\n"
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#endif
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"\tcmdline - OS specific command line processing/setup\n"
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"\tbdt - OS specific bd_t processing\n"
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"\tprep - OS specific prep before relocation or go\n"
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#if defined(CONFIG_TRACE)
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"\tfake - OS specific fake start without go\n"
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#endif
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"\tgo - start OS";
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#endif
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U_BOOT_CMD(
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bootm, CONFIG_SYS_MAXARGS, 1, do_bootm,
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"boot application image from memory", bootm_help_text
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);
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/*******************************************************************/
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/* bootd - boot default image */
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/*******************************************************************/
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#if defined(CONFIG_CMD_BOOTD)
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int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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return run_command(getenv("bootcmd"), flag);
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}
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U_BOOT_CMD(
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boot, 1, 1, do_bootd,
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"boot default, i.e., run 'bootcmd'",
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""
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);
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/* keep old command name "bootd" for backward compatibility */
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U_BOOT_CMD(
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bootd, 1, 1, do_bootd,
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"boot default, i.e., run 'bootcmd'",
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""
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);
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#endif
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/*******************************************************************/
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/* iminfo - print header info for a requested image */
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/*******************************************************************/
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#if defined(CONFIG_CMD_IMI)
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static int do_iminfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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int arg;
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ulong addr;
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int rcode = 0;
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if (argc < 2) {
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return image_info(load_addr);
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}
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for (arg = 1; arg < argc; ++arg) {
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addr = simple_strtoul(argv[arg], NULL, 16);
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if (image_info(addr) != 0)
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rcode = 1;
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}
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return rcode;
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}
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static int image_info(ulong addr)
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{
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void *hdr = (void *)addr;
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printf("\n## Checking Image at %08lx ...\n", addr);
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switch (genimg_get_format(hdr)) {
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#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
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case IMAGE_FORMAT_LEGACY:
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puts(" Legacy image found\n");
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if (!image_check_magic(hdr)) {
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puts(" Bad Magic Number\n");
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return 1;
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}
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if (!image_check_hcrc(hdr)) {
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puts(" Bad Header Checksum\n");
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return 1;
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}
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image_print_contents(hdr);
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puts(" Verifying Checksum ... ");
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if (!image_check_dcrc(hdr)) {
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puts(" Bad Data CRC\n");
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return 1;
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}
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puts("OK\n");
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return 0;
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#endif
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#if defined(CONFIG_ANDROID_BOOT_IMAGE)
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case IMAGE_FORMAT_ANDROID:
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puts(" Android image found\n");
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android_print_contents(hdr);
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return 0;
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#endif
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#if defined(CONFIG_FIT)
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case IMAGE_FORMAT_FIT:
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puts(" FIT image found\n");
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if (!fit_check_format(hdr)) {
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puts("Bad FIT image format!\n");
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return 1;
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}
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fit_print_contents(hdr);
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if (!fit_all_image_verify(hdr)) {
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puts("Bad hash in FIT image!\n");
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return 1;
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}
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return 0;
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#endif
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default:
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puts("Unknown image format!\n");
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break;
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}
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return 1;
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}
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U_BOOT_CMD(
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iminfo, CONFIG_SYS_MAXARGS, 1, do_iminfo,
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"print header information for application image",
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"addr [addr ...]\n"
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" - print header information for application image starting at\n"
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" address 'addr' in memory; this includes verification of the\n"
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" image contents (magic number, header and payload checksums)"
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);
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#endif
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/*******************************************************************/
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/* imls - list all images found in flash */
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/*******************************************************************/
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#if defined(CONFIG_CMD_IMLS)
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static int do_imls_nor(void)
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{
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flash_info_t *info;
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int i, j;
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void *hdr;
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for (i = 0, info = &flash_info[0];
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i < CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
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if (info->flash_id == FLASH_UNKNOWN)
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goto next_bank;
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for (j = 0; j < info->sector_count; ++j) {
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hdr = (void *)info->start[j];
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if (!hdr)
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goto next_sector;
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switch (genimg_get_format(hdr)) {
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#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
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case IMAGE_FORMAT_LEGACY:
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if (!image_check_hcrc(hdr))
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goto next_sector;
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printf("Legacy Image at %08lX:\n", (ulong)hdr);
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image_print_contents(hdr);
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puts(" Verifying Checksum ... ");
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if (!image_check_dcrc(hdr)) {
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puts("Bad Data CRC\n");
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} else {
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puts("OK\n");
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}
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break;
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#endif
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#if defined(CONFIG_FIT)
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case IMAGE_FORMAT_FIT:
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if (!fit_check_format(hdr))
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goto next_sector;
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printf("FIT Image at %08lX:\n", (ulong)hdr);
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fit_print_contents(hdr);
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break;
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#endif
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default:
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goto next_sector;
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}
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next_sector: ;
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}
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next_bank: ;
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}
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return 0;
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}
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#endif
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#if defined(CONFIG_CMD_IMLS_NAND)
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static int nand_imls_legacyimage(struct mtd_info *mtd, int nand_dev,
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loff_t off, size_t len)
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{
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void *imgdata;
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int ret;
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imgdata = malloc(len);
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if (!imgdata) {
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printf("May be a Legacy Image at NAND device %d offset %08llX:\n",
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nand_dev, off);
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printf(" Low memory(cannot allocate memory for image)\n");
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return -ENOMEM;
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}
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ret = nand_read_skip_bad(mtd, off, &len, imgdata);
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if (ret < 0 && ret != -EUCLEAN) {
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free(imgdata);
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return ret;
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}
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if (!image_check_hcrc(imgdata)) {
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free(imgdata);
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return 0;
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}
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printf("Legacy Image at NAND device %d offset %08llX:\n",
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nand_dev, off);
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image_print_contents(imgdata);
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puts(" Verifying Checksum ... ");
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if (!image_check_dcrc(imgdata))
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puts("Bad Data CRC\n");
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else
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puts("OK\n");
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free(imgdata);
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return 0;
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}
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static int nand_imls_fitimage(struct mtd_info *mtd, int nand_dev, loff_t off,
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size_t len)
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{
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void *imgdata;
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int ret;
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imgdata = malloc(len);
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if (!imgdata) {
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printf("May be a FIT Image at NAND device %d offset %08llX:\n",
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nand_dev, off);
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printf(" Low memory(cannot allocate memory for image)\n");
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return -ENOMEM;
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}
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ret = nand_read_skip_bad(mtd, off, &len, imgdata);
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if (ret < 0 && ret != -EUCLEAN) {
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free(imgdata);
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return ret;
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}
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|
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if (!fit_check_format(imgdata)) {
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free(imgdata);
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return 0;
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}
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printf("FIT Image at NAND device %d offset %08llX:\n", nand_dev, off);
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fit_print_contents(imgdata);
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free(imgdata);
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return 0;
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}
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|
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static int do_imls_nand(void)
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{
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struct mtd_info *mtd;
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int nand_dev = nand_curr_device;
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size_t len;
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loff_t off;
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u32 buffer[16];
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if (nand_dev < 0 || nand_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
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puts("\nNo NAND devices available\n");
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return -ENODEV;
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}
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printf("\n");
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for (nand_dev = 0; nand_dev < CONFIG_SYS_MAX_NAND_DEVICE; nand_dev++) {
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mtd = nand_info[nand_dev];
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if (!mtd->name || !mtd->size)
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continue;
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for (off = 0; off < mtd->size; off += mtd->erasesize) {
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const image_header_t *header;
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int ret;
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|
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if (nand_block_isbad(mtd, off))
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continue;
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len = sizeof(buffer);
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ret = nand_read(mtd, off, &len, (u8 *)buffer);
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if (ret < 0 && ret != -EUCLEAN) {
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printf("NAND read error %d at offset %08llX\n",
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ret, off);
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continue;
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}
|
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|
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switch (genimg_get_format(buffer)) {
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#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
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case IMAGE_FORMAT_LEGACY:
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header = (const image_header_t *)buffer;
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len = image_get_image_size(header);
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nand_imls_legacyimage(mtd, nand_dev, off, len);
|
|
break;
|
|
#endif
|
|
#if defined(CONFIG_FIT)
|
|
case IMAGE_FORMAT_FIT:
|
|
len = fit_get_size(buffer);
|
|
nand_imls_fitimage(mtd, nand_dev, off, len);
|
|
break;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
|
|
static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
int ret_nor = 0, ret_nand = 0;
|
|
|
|
#if defined(CONFIG_CMD_IMLS)
|
|
ret_nor = do_imls_nor();
|
|
#endif
|
|
|
|
#if defined(CONFIG_CMD_IMLS_NAND)
|
|
ret_nand = do_imls_nand();
|
|
#endif
|
|
|
|
if (ret_nor)
|
|
return ret_nor;
|
|
|
|
if (ret_nand)
|
|
return ret_nand;
|
|
|
|
return (0);
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
imls, 1, 1, do_imls,
|
|
"list all images found in flash",
|
|
"\n"
|
|
" - Prints information about all images found at sector/block\n"
|
|
" boundaries in nor/nand flash."
|
|
);
|
|
#endif
|