[PATCH] common: spl: spl_mmc: Add full FIT image support for kernel/OS loading during Falcon boot mode while booting via MMC

[Nathan Barrett-Morrison]

Hi Tom,

This patch adds support for Falcon mode boot via MMC flash boot devices
with full FIT images.

While attempting to use Falcon boot mode with FIT images on MMC flash boot
devices, I've found the following additional code to be required.

Patch attached and also added inline below:

Sincerely,
Nathan

>From a3d066656df60856950c9cbb28914d02d57c9364 Mon Sep 17 00:00:00 2001
From: Nathan Barrett-Morrison <nathan.morrison at timesys.com>
Date: Tue, 8 Feb 2022 13:16:24 -0500
Subject: [PATCH] common: spl: spl_mmc: Add full FIT image support for
 kernel/OS loading during Falcon boot mode while booting via MMC

Signed-off-by: Nathan Barrett-Morrison <nathan.morrison at timesys.com>
Cc: Tom Rini <trini at konsulko.com>
---
 common/spl/spl_mmc.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/common/spl/spl_mmc.c b/common/spl/spl_mmc.c
index e1a7d25bd0..7fb2505c33 100644
--- a/common/spl/spl_mmc.c
+++ b/common/spl/spl_mmc.c
@@ -94,7 +94,19 @@ int mmc_load_image_raw_sector(struct spl_image_info
*spl_image,
  goto end;
  }

- if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
+ if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
+    image_get_magic(header) == FDT_MAGIC) {
+ u32 image_size_sectors;
+
+ debug("Found FIT\n");
+
+ image_size_sectors = (roundup(fdt_totalsize(header), 4) +
mmc->read_bl_len - 1) /
+     mmc->read_bl_len;
+ count = blk_dread(bd, sector, image_size_sectors, CONFIG_SYS_LOAD_ADDR);
+ debug("hdr read sector %lx, count=%lu\n", sector, count);
+
+ ret = spl_parse_image_header(spl_image, CONFIG_SYS_LOAD_ADDR);
+ } else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
     image_get_magic(header) == FDT_MAGIC) {
  struct spl_load_info load;

-- 
2.30.2
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