u-boot.git/arch/arm/lib/save_prev_bl_data.c, branch v2024.01

Correct SPL uses of SAVE_PREV_BL_INITRAMFS_START_ADDR

2023-02-10T12:41:40Z

This converts 2 usages of this option to the non-SPL form, since there is no SPL_SAVE_PREV_BL_INITRAMFS_START_ADDR defined in Kconfig Signed-off-by: Simon Glass

Correct SPL uses of SAVE_PREV_BL_FDT_ADDR

2023-02-10T12:41:40Z

This converts 2 usages of this option to the non-SPL form, since there is no SPL_SAVE_PREV_BL_FDT_ADDR defined in Kconfig Signed-off-by: Simon Glass

arm: init: save previous bootloader data

2022-04-04T18:53:26Z

When u-boot is used as a chain-loaded bootloader (replacing OS kernel), previous bootloader leaves data in RAM, that can be reused. For example, on recent arm linux system, when chainloading u-boot, there are initramfs and fdt in RAM prepared for OS booting. Initramfs may be modified to store u-boot's payload, thus providing the ability to use chainloaded u-boot to boot OS without any storage support. Two config options added: - SAVE_PREV_BL_INITRAMFS_START_ADDR saves initramfs start address to 'prevbl_initrd_start_addr' environment variable - SAVE_PREV_BL_FDT_ADDR saves fdt address to 'prevbl_fdt_addr' environment variable Signed-off-by: Dzmitry Sankouski Cc: Tom Rini