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bootstd: cros: Add ARM support

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Support booting ChromiumOS on ARM devices using FIT. Add an entry into the
boot implementation which does not require a command line. This can be
expanded over time as the bootm code is refactored.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2023-07-30 11:17:02 -06:00
parent c279224ea6
commit daffb0be2c
4 changed files with 57 additions and 8 deletions
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4
boot/Kconfig
View file

@ -464,8 +464,8 @@ config BOOTMETH_GLOBAL
config BOOTMETH_CROS
bool "Bootdev support for Chromium OS"
depends on X86 || SANDBOX
default y
depends on X86 || ARM || SANDBOX
default y if !ARM
help
Enables support for booting Chromium OS using bootdevs. This uses the
kernel A slot and obtains the kernel command line from the parameters

37
boot/bootm.c
View file

@ -823,6 +823,43 @@ err:
return ret;
}
int bootm_boot_start(ulong addr, const char *cmdline)
{
static struct cmd_tbl cmd = {"bootm"};
char addr_str[30];
char *argv[] = {addr_str, NULL};
int states;
int ret;
/*
* TODO(sjg@chromium.org): This uses the command-line interface, but
* should not. To clean this up, the various bootm states need to be
* passed an info structure instead of cmdline flags. Then this can
* set up the required info and move through the states without needing
* the command line.
*/
states = BOOTM_STATE_START | BOOTM_STATE_FINDOS | BOOTM_STATE_PRE_LOAD |
BOOTM_STATE_FINDOTHER | BOOTM_STATE_LOADOS |
BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
BOOTM_STATE_OS_GO;
if (IS_ENABLED(CONFIG_SYS_BOOT_RAMDISK_HIGH))
states |= BOOTM_STATE_RAMDISK;
if (IS_ENABLED(CONFIG_PPC) || IS_ENABLED(CONFIG_MIPS))
states |= BOOTM_STATE_OS_CMDLINE;
images.state |= states;
snprintf(addr_str, sizeof(addr_str), "%lx", addr);
ret = env_set("bootargs", cmdline);
if (ret) {
printf("Failed to set cmdline\n");
return ret;
}
ret = do_bootm_states(&cmd, 0, 1, argv, states, &images, 1);
return ret;
}
#if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
/**
* image_get_kernel - verify legacy format kernel image

12
boot/bootmeth_cros.c
View file

@ -419,13 +419,17 @@ static int cros_boot(struct udevice *dev, struct bootflow *bflow)
if (ret)
return log_msg_ret("rd", ret);
}
#ifdef CONFIG_X86
zboot_start(map_to_sysmem(bflow->buf), bflow->size, 0, 0,
if (IS_ENABLED(CONFIG_X86)) {
ret = zboot_start(map_to_sysmem(bflow->buf), bflow->size, 0, 0,
map_to_sysmem(bflow->x86_setup),
bflow->cmdline);
#endif
} else {
ret = bootm_boot_start(map_to_sysmem(bflow->buf),
bflow->cmdline);
}
return log_msg_ret("go", -EFAULT);
return log_msg_ret("go", ret);
}
static int cros_bootmeth_bind(struct udevice *dev)

8
include/bootm.h
View file

@ -163,4 +163,12 @@ const char *zimage_get_kernel_version(struct boot_params *params,
*/
void zimage_dump(struct boot_params *base_ptr, bool show_cmdline);
/*
* bootm_boot_start() - Boot an image at the given address
*
* @addr: Image address
* @cmdline: Command line to set
*/
int bootm_boot_start(ulong addr, const char *cmdline);
#endif