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firmware: Add RW section offset in scratch

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Add the RW section offset, provided by _fw_rw_offset symbol,
to the scratch structure. This will be used to program
separate pmp entry for RW section.

Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Himanshu Chauhan
2023-01-19 20:48:24 +05:30
committed by Anup Patel
parent 2f40a99c9e
commit c10e3fe5f9
2 changed files with 22 additions and 10 deletions
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8
firmware/fw_base.S
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@@ -298,6 +298,12 @@ _scratch_init:
sub a5, t3, a4
REG_S a4, SBI_SCRATCH_FW_START_OFFSET(tp)
REG_S a5, SBI_SCRATCH_FW_SIZE_OFFSET(tp)
/* Store R/W section's offset in scratch space */
lla a4, __fw_rw_offset
REG_L a5, 0(a4)
REG_S a5, SBI_SCRATCH_FW_RW_OFFSET(tp)
/* Store next arg1 in scratch space */
MOV_3R s0, a0, s1, a1, s2, a2
call fw_next_arg1
@@ -519,6 +525,8 @@ _link_start:
RISCV_PTR FW_TEXT_START
_link_end:
RISCV_PTR _fw_reloc_end
__fw_rw_offset:
RISCV_PTR _fw_rw_offset
.section .entry, "ax", %progbits
.align 3