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include: sbi_scratch: Add tmp1 scratch space for RNMI context saving

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RNMI handlers use MNSCRATCH instead of MSCRATCH and need separate scratch
space from regular trap handling. Add tmp1 for RNMI context while tmp0
remains for regular traps.

Signed-off-by: Evgeny Voevodin <evvoevod@tenstorrent.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/0a5d241fa1db03e71a3f56be24708cbbc8037e28.1778176768.git.evvoevod@tenstorrent.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Evgeny Voevodin
2026-05-07 18:08:02 +00:00
committed by Anup Patel
parent 2257e99571
commit 5d248a0132
2 changed files with 10 additions and 4 deletions
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firmware/fw_base.S
+2 -1
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@@ -258,9 +258,10 @@ _scratch_init:
/* Store hartid-to-scratch function address in scratch space */
lla a4, _hartid_to_scratch
REG_S a4, SBI_SCRATCH_HARTID_TO_SCRATCH_OFFSET(tp)
/* Clear trap_context and tmp0 in scratch space */
/* Clear trap_context, tmp0 and tmp1 in scratch space */
REG_S zero, SBI_SCRATCH_TRAP_CONTEXT_OFFSET(tp)
REG_S zero, SBI_SCRATCH_TMP0_OFFSET(tp)
REG_S zero, SBI_SCRATCH_TMP1_OFFSET(tp)
/* Store firmware options in scratch space */
MOV_3R s0, a0, s1, a1, s2, a2
#ifdef FW_OPTIONS