From: Sean Anderson seanga2@gmail.com
[ Upstream commit 79605f1394261995c2b955c906a5a20fb27cdc84 ]
M-Mode Linux is loaded at the start of RAM, not 2MB later. Perhaps this should be calculated based on PAGE_OFFSET somehow? Even better would be to deprecate text_offset and instead introduce something absolute.
Signed-off-by: Sean Anderson seanga2@gmail.com Signed-off-by: Palmer Dabbelt palmerdabbelt@google.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/riscv/kernel/head.S | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S index 72f89b7590dd6..344793159b97d 100644 --- a/arch/riscv/kernel/head.S +++ b/arch/riscv/kernel/head.S @@ -26,12 +26,17 @@ ENTRY(_start) /* reserved */ .word 0 .balign 8 +#ifdef CONFIG_RISCV_M_MODE + /* Image load offset (0MB) from start of RAM for M-mode */ + .dword 0 +#else #if __riscv_xlen == 64 /* Image load offset(2MB) from start of RAM */ .dword 0x200000 #else /* Image load offset(4MB) from start of RAM */ .dword 0x400000 +#endif #endif /* Effective size of kernel image */ .dword _end - _start