spl_mmc: add Falcon mode support for FAT variant
If Falcon mode support is enabled (and the system isn't directed into
booting u-boot), it will instead try to load kernel from
CONFIG_SPL_FAT_LOAD_KERNEL_NAME file and kernel argument parameters from
CONFIG_SPL_FAT_LOAD_ARGS_NAME, both from the same partition as u-boot.
Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
diff --git a/README b/README
index 3780564..c7b60e4 100644
--- a/README
+++ b/README
@@ -2938,6 +2938,14 @@
CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME
Filename to read to load U-Boot when reading from FAT
+ CONFIG_SPL_FAT_LOAD_KERNEL_NAME
+ Filename to read to load kernel uImage when reading
+ from FAT (for Falcon mode)
+
+ CONFIG_SPL_FAT_LOAD_ARGS_NAME
+ Filename to read to load kernel argument parameters
+ when reading from FAT (for Falcon mode)
+
CONFIG_SPL_MPC83XX_WAIT_FOR_NAND
Set this for NAND SPL on PPC mpc83xx targets, so that
start.S waits for the rest of the SPL to load before
diff --git a/common/spl/spl_mmc.c b/common/spl/spl_mmc.c
index fac6f2d..d250b40 100644
--- a/common/spl/spl_mmc.c
+++ b/common/spl/spl_mmc.c
@@ -91,6 +91,24 @@
return (err <= 0);
}
+
+#ifdef CONFIG_SPL_OS_BOOT
+static int mmc_load_image_fat_os(struct mmc *mmc)
+{
+ int err;
+
+ err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME,
+ (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
+ if (err <= 0) {
+ printf("spl: error reading image %s, err - %d\n",
+ CONFIG_SPL_FAT_LOAD_ARGS_NAME, err);
+ return -1;
+ }
+
+ return mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_KERNEL_NAME);
+}
+#endif
+
#endif
void spl_mmc_load_image(void)
@@ -128,6 +146,9 @@
hang();
}
+#ifdef CONFIG_SPL_OS_BOOT
+ if (spl_start_uboot() || mmc_load_image_fat_os(mmc))
+#endif
err = mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
#endif
} else {