From: Pali Rohár <[email protected]>

Platform specific BootROM may use its own image type for loading SPL or
main U-Boot binary. In some cases it makes sense to not use BootROM
supplied code for booting main U-Boot binary but rather to use U-Boot SPL
to load main U-Boot binary, e.g. when U-Boot SPL can load main U-Boot
binary faster than BootROM. In this case it is required for platform board
code to parse and load U-Boot in BootROM specific image type.

This change adds support for parsing platform / board / BootROM specific
image types via weak function spl_parse_board_header() which is called
before marking boot image as a raw.

Signed-off-by: Pali Rohár <[email protected]>
Reviewed-by: Marek Behún <[email protected]>
---
 common/spl/spl.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/common/spl/spl.c b/common/spl/spl.c
index eba77cace6..555045eaf2 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -296,6 +296,12 @@ static int spl_load_fit_image(struct spl_image_info 
*spl_image,
 }
 #endif
 
+__weak int spl_parse_board_header(struct spl_image_info *spl_image,
+                                 const void *image_header, size_t size)
+{
+       return -EINVAL;
+}
+
 __weak int spl_parse_legacy_header(struct spl_image_info *spl_image,
                                   const struct image_header *header)
 {
@@ -348,6 +354,9 @@ int spl_parse_image_header(struct spl_image_info *spl_image,
                }
 #endif
 
+               if (!spl_parse_board_header(spl_image, (const void *)header, 
sizeof(*header)))
+                       return 0;
+
 #ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT
                /* Signature not found - assume u-boot.bin */
                debug("mkimage signature not found - ih_magic = %x\n",
-- 
2.31.1

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