bootstd: Replicate the dtb-filename quirks of distroboot
For EFI, the distro boot scripts search in three different directories
for the .dtb file. The SOC-based filename fallback is supported only for
32-bit ARM.
Adjust the code to mirror this behaviour.
Also some boards can use a prior-stage FDT if one is not found in the
normal way. Support this and show a message in that case.
Signed-off-by: Simon Glass <sjg@chromium.org>
Suggested-by: Mark Kettenis <kettenis@openbsd.org>
diff --git a/boot/bootflow.c b/boot/bootflow.c
index 70d5fc5..8f2cb87 100644
--- a/boot/bootflow.c
+++ b/boot/bootflow.c
@@ -467,6 +467,9 @@
printf("** Booting bootflow '%s' with %s\n", bflow->name,
bflow->method->name);
+ if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
+ (bflow->flags & BOOTFLOWF_USE_PRIOR_FDT))
+ printf("Using prior-stage device tree\n");
ret = bootflow_boot(bflow);
if (!IS_ENABLED(CONFIG_BOOTSTD_FULL)) {
printf("Boot failed (err=%d)\n", ret);