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| author | Sean Anderson <seanga2@gmail.com> | 2020-10-22 16:30:12 -0400 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-11-05 17:32:27 -0800 |
| commit | 79605f1394261995c2b955c906a5a20fb27cdc84 (patch) | |
| tree | 9cdc800e4ee872c9985f755c98c9e10cab2e855d /arch/riscv | |
| parent | 1bd14a66ee5200d6a24419cbd2e0a0fccd4da36f (diff) | |
| download | lwn-79605f1394261995c2b955c906a5a20fb27cdc84.tar.gz lwn-79605f1394261995c2b955c906a5a20fb27cdc84.zip | |
riscv: Set text_offset correctly for M-Mode
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>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/kernel/head.S | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S index 11e2a4fe66e0..7e849797c9c3 100644 --- a/arch/riscv/kernel/head.S +++ b/arch/riscv/kernel/head.S @@ -35,6 +35,10 @@ ENTRY(_start) .word 0 #endif .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 @@ -42,6 +46,7 @@ ENTRY(_start) /* Image load offset(4MB) from start of RAM */ .dword 0x400000 #endif +#endif /* Effective size of kernel image */ .dword _end - _start .dword __HEAD_FLAGS |