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| author | Marcus Comstedt <marcus@mc.pp.se> | 2021-06-16 22:49:50 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-06-16 13:49:50 -0700 |
| commit | ae7348b246bc091f5af844a7bdaf1044cac90635 (patch) | |
| tree | 7c729bfdf5e1b53c4be56188d815e08cd3a932f8 /machine/mentry.S | |
| parent | e8e6b3aaee44d43b48164fbd377864c3a682dbd3 (diff) | |
| download | pk-ae7348b246bc091f5af844a7bdaf1044cac90635.zip pk-ae7348b246bc091f5af844a7bdaf1044cac90635.tar.gz pk-ae7348b246bc091f5af844a7bdaf1044cac90635.tar.bz2 | |
Set desired endianness at boot time (#247)
Diffstat (limited to 'machine/mentry.S')
| -rw-r--r-- | machine/mentry.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/machine/mentry.S b/machine/mentry.S index e71745c..4cf9685 100644 --- a/machine/mentry.S +++ b/machine/mentry.S @@ -255,6 +255,17 @@ do_reset: li x31, 0 csrw mscratch, x0 +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + # fixup endianness before making any loads or stores +#if __riscv_xlen == 32 + li t0, MSTATUSH_MBE + csrs CSR_MSTATUSH, t0 +#else + li t0, MSTATUS_MBE + csrs CSR_MSTATUS, t0 +#endif +#endif + # write mtvec and make sure it sticks la t0, trap_vector csrw mtvec, t0 |