On Tue, Feb 22, 2022 at 09:49:52PM +0300, Dzmitry Sankouski wrote: > 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 <dsankou...@gmail.com> > Cc: Tom Rini <tr...@konsulko.com>
Applied to u-boot/master, thanks! -- Tom
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