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bootstd: Replicate the dtb-filename quirks of distroboot

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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>
This commit is contained in:
Simon Glass
2023-02-22 12:17:04 -07:00
parent 4f806f31fc
commit 47dd6b4d7d
3 changed files with 78 additions and 9 deletions
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14
include/bootflow.h
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@@ -36,6 +36,18 @@ enum bootflow_state_t {
BOOTFLOWST_COUNT
};
/**
* enum bootflow_flags_t - flags for bootflows
*
* @BOOTFLOWF_USE_PRIOR_FDT: Indicates that an FDT was not found by the bootmeth
* and it is using the prior-stage FDT, which is the U-Boot control FDT.
* This is only possible with the EFI bootmeth (distro-efi) and only when
* CONFIG_OF_HAS_PRIOR_STAGE is enabled
*/
enum bootflow_flags_t {
BOOTFLOWF_USE_PRIOR_FDT = 1 << 0,
};
/**
* struct bootflow - information about a bootflow
*
@@ -68,6 +80,7 @@ enum bootflow_state_t {
* @fdt_fname: Filename of FDT file
* @fdt_size: Size of FDT file
* @fdt_addr: Address of loaded fdt
* @flags: Flags for the bootflow (see enum bootflow_flags_t)
*/
struct bootflow {
struct list_head bm_node;
@@ -90,6 +103,7 @@ struct bootflow {
char *fdt_fname;
int fdt_size;
ulong fdt_addr;
int flags;
};
/**