[PATCH 26/34] sunxi: update rmr_switch.S source code

[Jernej Škrabec]

Dne nedelja, 23. marec 2025 ob 12:35:36 Srednjeevropski standardni čas je Andre Przywara napisal(a):
> Because the Allwinner BootROM always runs in AArch32, even on ARMv8 SoCs,
> we need to switch to AArch64 first, but also need to save the CPU state,
> when we later may need to return to the BootROM, for continuing with the
> FEL USB protocol. This is done in 32-bit code, which we include into the
> AArch64 boot assembly file as a series of .word directives, containing
> the encoded AArch32 instructions. To be able to change and verify that
> code, we also kept an assembly file with the respective 32-bit code, but
> just for reference.
> 
> As this code is never compiled or assembled - it's just for
> documentation - it became stale over time: we didn't really update this
> along with the changes we made to the boot code. In particular the FEL
> save code was completely missing.
> 
> Update that 32-bit assembly file, to match the current version used in
> boot0.h, including the FEL save routine. Also update the build
> instructions in the comments, to give people an actual chance to
> assemble this code.
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>

Acked-by: Jernej Skrabec <jernej.skrabec at gmail.com>

Best regards,
Jernej