The RK3506 TPL provides memory info to the bootloader via ATAGS. There is already an implementation that reads this information on RK3588 and others, but it is currently gated behind CONFIG_ARM64. The RK3506 is *not* ARM64.
This patch series aims to allow this code to be used on non-ARM64, by * adding a new config option to read this info from the TPL, * allowing the ATAGS memory area it uses to be set in config headers, * placing truly ARM64-specific logic behind CONFIG_ARM64. I'm working on upstreaming RK3506 support, and this is the first patch series of hopefully many in that direction. Signed-off-by: Aaron Griffith <[email protected]> --- Aaron Griffith (5): rockchip: sdram: add option to read bank information from TPL rockchip: sdram: remove redundant configuration checks rockchip: sdram: allow config headers to override ATAGs location rockchip: sdram: refactor bi_dram logic into separate function rockchip: sdram: only reserve BL31 and use mem_map on ARM64 arch/arm/mach-rockchip/Kconfig | 11 +++ arch/arm/mach-rockchip/sdram.c | 195 ++++++++++++++++++++++------------------- 2 files changed, 118 insertions(+), 88 deletions(-) --- base-commit: 0f6ff53d55ba254de8a995c2a2f5a313acd40ac7 change-id: 20251226-rockchip-tpl-use-atags-bf3d14a840ca Best regards, -- Aaron Griffith <[email protected]>
