Allwinner 64-bit SoCs have allocated 3GiB space in the memory map for DRAM. If memory bigger than 3GiB is installed (as memory usually come as pow of 2 and they are not known to support 3GiB LPDDR3 modules, it means 4GiB memory is installed), the whole 3GiB space can be all used.
However, in many situations we still only defined 2GiB for the DRAM.
Add support for 3GiB DRAM. Tested on a customized Pine A64-LTS with 4GiB LPDDR3 memory installed.
Icenowy Zheng (5): sunxi: map DRAM part with 3G size sunxi: add Kconfig option for the maximum accessible DRAM sunxi: add 3GiB DRAM detection support in main U-Boot sunxi: let sunxi_dram_init return unsigned long long sunxi: restrict the ram_size to the accessible range in SPL
arch/arm/include/asm/arch-sunxi/dram.h | 2 +- arch/arm/mach-sunxi/Kconfig | 7 +++++++ arch/arm/mach-sunxi/board.c | 2 +- arch/arm/mach-sunxi/dram_sun6i.c | 2 +- arch/arm/mach-sunxi/dram_sun8i_a23.c | 2 +- arch/arm/mach-sunxi/dram_sun8i_a33.c | 2 +- arch/arm/mach-sunxi/dram_sun8i_a83t.c | 2 +- arch/arm/mach-sunxi/dram_sun9i.c | 4 ++-- arch/arm/mach-sunxi/dram_sunxi_dw.c | 4 ++-- board/sunxi/board.c | 36 ++++++++++++++++++++++++++++++++-- board/sunxi/dram_sun4i_auto.c | 2 +- board/sunxi/dram_sun5i_auto.c | 2 +- include/configs/sunxi-common.h | 2 +- 13 files changed, 54 insertions(+), 15 deletions(-)