diff options
| author | Anup Patel <anup.patel@wdc.com> | 2019-02-19 15:41:22 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2019-02-20 09:32:40 +0300 |
| commit | 122d00ba67c9caeffc65ddd96dd22c0d204f4c72 (patch) | |
| tree | af897791de84a0c92221af20979ebc0982f46cb1 /include/sbi/sbi_scratch.h | |
| parent | ce6189f7a5adbf6ac88b95f78a6d5e9b5481faf9 (diff) | |
| download | opensbi-122d00ba67c9caeffc65ddd96dd22c0d204f4c72.tar.xz | |
firmware: Improve low-level trap handler for M-mode to M-mode traps
This patch extends our low-level trap handler in fw_base.S for
handling M-mode to M-mode traps without overwritting stack.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Diffstat (limited to 'include/sbi/sbi_scratch.h')
| -rw-r--r-- | include/sbi/sbi_scratch.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/sbi/sbi_scratch.h b/include/sbi/sbi_scratch.h index ff6aed0..8389ef3 100644 --- a/include/sbi/sbi_scratch.h +++ b/include/sbi/sbi_scratch.h @@ -30,6 +30,8 @@ #define SBI_SCRATCH_HARTID_TO_SCRATCH_OFFSET (7 * __SIZEOF_POINTER__) /** Offset of ipi_type member in sbi_scratch */ #define SBI_SCRATCH_IPI_TYPE_OFFSET (8 * __SIZEOF_POINTER__) +/** Offset of tmp0 member in sbi_scratch */ +#define SBI_SCRATCH_TMP0_OFFSET (9 * __SIZEOF_POINTER__) /** Maximum size of sbi_scratch */ #define SBI_SCRATCH_SIZE 256 @@ -57,6 +59,8 @@ struct sbi_scratch { unsigned long hartid_to_scratch; /** IPI type (or flags) */ unsigned long ipi_type; + /** Temporary storage */ + unsigned long tmp0; } __packed; /** Get pointer to sbi_scratch for current HART */ |