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riscv: Set text_offset correctly for M-Mode

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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>
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Sean Anderson 2020-10-22 16:30:12 -04:00 committed by Palmer Dabbelt
parent 1bd14a66ee
commit 79605f1394
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1 changed files with 5 additions and 0 deletions
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arch/riscv/kernel/head.S
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@ -35,12 +35,17 @@ ENTRY(_start)
.word 0 .word 0
#endif #endif
.balign 8 .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 #if __riscv_xlen == 64
/* Image load offset(2MB) from start of RAM */ /* Image load offset(2MB) from start of RAM */
.dword 0x200000 .dword 0x200000
#else #else
/* Image load offset(4MB) from start of RAM */ /* Image load offset(4MB) from start of RAM */
.dword 0x400000 .dword 0x400000
#endif
#endif #endif
/* Effective size of kernel image */ /* Effective size of kernel image */
.dword _end - _start .dword _end - _start