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spl: Allow multiple loaders of the same time

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At present we only support a single loader of each time. Extra ones are
ignored. This means that only one BOOT_DEVICE_BOARD can be used in the SPL
image.

This is inconvenient since we sometimes want to provide several
board-specific drivers, albeit at different priorties. Add support for
this.

This should have no functional change for existing boards.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2022-10-20 18:23:07 -06:00 committed by Tom Rini
parent c3a148f38f
commit 5a61bf17d8
1 changed files with 25 additions and 31 deletions
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40
common/spl/spl.c
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@ -630,23 +630,6 @@ __weak void board_boot_order(u32 *spl_boot_list)
spl_boot_list[0] = spl_boot_device();
}
static struct spl_image_loader *spl_ll_find_loader(uint boot_device)
{
struct spl_image_loader *drv =
ll_entry_start(struct spl_image_loader, spl_image_loader);
const int n_ents =
ll_entry_count(struct spl_image_loader, spl_image_loader);
struct spl_image_loader *entry;
for (entry = drv; entry != drv + n_ents; entry++) {
if (boot_device == entry->boot_device)
return entry;
}
/* Not found */
return NULL;
}
__weak int spl_check_board_image(struct spl_image_info *spl_image,
const struct spl_boot_device *bootdev)
{
@ -693,6 +676,10 @@ static int spl_load_image(struct spl_image_info *spl_image,
static int boot_from_devices(struct spl_image_info *spl_image,
u32 spl_boot_list[], int count)
{
struct spl_image_loader *drv =
ll_entry_start(struct spl_image_loader, spl_image_loader);
const int n_ents =
ll_entry_count(struct spl_image_loader, spl_image_loader);
int ret = -ENODEV;
int i;
@ -702,22 +689,29 @@ static int boot_from_devices(struct spl_image_info *spl_image,
if (CONFIG_IS_ENABLED(SHOW_ERRORS))
ret = -ENXIO;
loader = spl_ll_find_loader(bootdev);
for (loader = drv; loader != drv + n_ents; loader++) {
if (bootdev != loader->boot_device)
continue;
if (!CONFIG_IS_ENABLED(SILENT_CONSOLE)) {
if (loader)
printf("Trying to boot from %s\n",
spl_loader_name(loader));
else if (CONFIG_IS_ENABLED(SHOW_ERRORS))
else if (CONFIG_IS_ENABLED(SHOW_ERRORS)) {
printf(SPL_TPL_PROMPT
"Unsupported Boot Device %d\n", bootdev);
else
puts(SPL_TPL_PROMPT "Unsupported Boot Device!\n");
"Unsupported Boot Device %d\n",
bootdev);
} else {
puts(SPL_TPL_PROMPT
"Unsupported Boot Device!\n");
}
if (loader && !spl_load_image(spl_image, loader)) {
}
if (loader &&
!spl_load_image(spl_image, loader)) {
spl_image->boot_device = bootdev;
return 0;
}
}
}
return ret;
}