riscv: drop the use of XIP_OFFSET in XIP_FIXUP_OFFSET

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XIP_OFFSET is the hard-coded offset of writable data section within the
kernel.

By hard-coding this value, the read-only section of the kernel (which is
placed before the writable data section) is restricted in size.

As a preparation to remove this hard-coded macro XIP_OFFSET entirely, stop
using XIP_OFFSET in XIP_FIXUP_OFFSET. Instead, use CONFIG_PHYS_RAM_BASE and
_sdata to do the same thing.

While at it, also add a description for XIP_FIXUP_OFFSET.

Signed-off-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/dba0409518b14ee83b346e099b1f7f934daf7b74.1717789719.git.namcao@linutronix.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Nam Cao 2024-06-07 22:22:09 +02:00 • committed by Palmer Dabbelt

parent 5cf0896721

commit e4eac34fed

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1 changed files with 12 additions and 2 deletions

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arch/riscv/include/asm/xip_fixup.h

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