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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>
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2 changed files with 29 additions and 0 deletions
8
README
8
README
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@ -2938,6 +2938,14 @@ FIT uImage format:
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CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME
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Filename to read to load U-Boot when reading from FAT
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CONFIG_SPL_FAT_LOAD_KERNEL_NAME
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Filename to read to load kernel uImage when reading
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from FAT (for Falcon mode)
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CONFIG_SPL_FAT_LOAD_ARGS_NAME
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Filename to read to load kernel argument parameters
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when reading from FAT (for Falcon mode)
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CONFIG_SPL_MPC83XX_WAIT_FOR_NAND
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Set this for NAND SPL on PPC mpc83xx targets, so that
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start.S waits for the rest of the SPL to load before
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@ -91,6 +91,24 @@ end:
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return (err <= 0);
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}
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#ifdef CONFIG_SPL_OS_BOOT
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static int mmc_load_image_fat_os(struct mmc *mmc)
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{
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int err;
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err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME,
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(void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
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if (err <= 0) {
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printf("spl: error reading image %s, err - %d\n",
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CONFIG_SPL_FAT_LOAD_ARGS_NAME, err);
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return -1;
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}
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return mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_KERNEL_NAME);
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}
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#endif
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#endif
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void spl_mmc_load_image(void)
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@ -128,6 +146,9 @@ void spl_mmc_load_image(void)
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hang();
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}
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#ifdef CONFIG_SPL_OS_BOOT
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if (spl_start_uboot() || mmc_load_image_fat_os(mmc))
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#endif
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err = mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
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#endif
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} else {
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