[PATCH v2] riscv: Set text_offset correctly for M-Mode
Sean Anderson
seanga2 at gmail.com
Thu Oct 22 16:30:12 EDT 2020
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 at gmail.com>
---
Changes in v2:
- RISCV_S_MODE does not exist; use RISCV_M_MODE instead
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 0a4e81b8dc79..5a0ae2eaf5e2 100644
--- a/arch/riscv/kernel/head.S
+++ b/arch/riscv/kernel/head.S
@@ -27,12 +27,17 @@ 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
--
2.28.0
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