Jesse Taube a08b04b5c7 mach-sunxi: Add boot device detection for SUNIV/F1C100s ... In contrast to other Allwinner SoCs the F1C100s BROM does not store a boot source indicator in the eGON header in SRAM. This leaves the SPL guessing where we were exactly booted from, and for instance trying the SD card first, even though we booted from SPI flash. By inspecting the BROM code and by experimentation, Samuel found that the top of the BROM stack contains unique pointers for each of the boot sources, which we can use as a boot source indicator. This patch removes the existing board_boot_order bodge and replace it with a proper boot source indication function. The only caveat is that this only works in the SPL, as the SPL header gets overwritten with the exception vectors, once U-Boot proper takes over. Always return MMC0 as the boot source, when called from U-Boot proper, as a placeholder for now, until we find another way. Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com> Suggested-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>		2022-03-03 01:23:58 +00:00
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asm	mach-sunxi: Add boot device detection for SUNIV/F1C100s	2022-03-03 01:23:58 +00:00
debug	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00