Currently, only support the kernels where the base of physical memory is at a 16MiB boundary. Because the add/sub instructions only contains 8bits unrotated value. But we can use one more "add/sub" instructions to handle bits 23-16, to support PHYS_OFFSET minimum aligned at 64KiB boundary.
This function is required at least by some Huawei boards, such as Hi1380 board. Becuase the kernel Image is loaded at 2MiB boundary. Zhen Lei (2): ARM: fix trivial comments in head.S ARM: support PHYS_OFFSET minimum aligned at 64KiB boundary arch/arm/Kconfig | 18 +++++++++++++++++- arch/arm/include/asm/memory.h | 16 +++++++++++++--- arch/arm/kernel/head.S | 31 ++++++++++++++++++++++--------- 3 files changed, 52 insertions(+), 13 deletions(-) -- 1.8.3
