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boot: Show the device path for EFI bootflows

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If the bootflow relates to the EFI bootmeth, show the device path along
with the other info.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2025-08-27 13:30:23 -06:00
parent ead588c067
commit e6f9a0ae58
5 changed files with 101 additions and 0 deletions
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37
lib/efi/device_path.c
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@@ -8,6 +8,7 @@
#define LOG_CATEGORY LOGC_EFI
#include <blk.h>
#include <bootflow.h>
#include <dm.h>
#include <dm/root.h>
#include <efi_device_path.h>
@@ -1376,3 +1377,39 @@ const char *efi_dp_guess_uclass(struct efi_device_path *device_path,
return best_name;
}
int efi_dp_from_bootflow(const struct bootflow *bflow,
struct efi_device_path **dpp, bool *allocedp)
{
struct udevice *bdev = bflow->dev;
struct blk_desc *desc;
struct udevice *blk;
int ret;
if (IS_ENABLED(CONFIG_EFI_APP)) {
const struct efi_device_path *dpc;
ret = efi_dp_from_bootdev(bflow->dev, &dpc);
if (ret)
return log_msg_ret("dfa", ret);
*dpp = (struct efi_device_path *)dpc;
if (allocedp)
*allocedp = false;
} else {
struct efi_device_path *dp;
if (!allocedp)
return log_msg_ret("dfb", -EINVAL);
ret = bootdev_get_sibling_blk(bdev, &blk);
if (ret)
return log_msg_ret("dfc", ret);
desc = dev_get_uclass_plat(blk);
dp = efi_dp_from_part(desc, bflow->part);
if (!dp)
return log_msg_ret("dfd", -ENOMEM);
*allocedp = true;
*dpp = dp;
}
return 0;
}