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[r128]using payload_arm_thumb_read32 to read sid

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This commit is contained in:
JianjunJiang 2023-05-12 13:20:00 +08:00
parent 1bf6a578ca
commit 52c1a60657
1 changed files with 33 additions and 4 deletions
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37
chips/r128.c
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@ -12,14 +12,43 @@ static int chip_reset(struct xfel_ctx_t * ctx)
return 0;
}
/*
.global _start
_start:
ldr r0, _adr
add r1, pc, #12
ldr r2, [r0]
str r2, [r1, #0]
bx lr
.align 2
_adr:
.word 0x11223344
_val:
.word 0x55667788
*/
static uint32_t payload_thumb_read32(struct xfel_ctx_t * ctx, uint32_t addr)
{
static const uint8_t payload[] = {
0x02, 0x48, 0x03, 0xa1, 0x02, 0x68, 0x0a, 0x60, 0x70, 0x47, 0x00, 0xbf,
};
uint32_t adr = cpu_to_le32(addr);
uint32_t val;
fel_write(ctx, ctx->version.scratchpad, (void *)payload, sizeof(payload));
fel_write(ctx, ctx->version.scratchpad + sizeof(payload), (void *)&adr, sizeof(adr));
fel_exec(ctx, ctx->version.scratchpad);
fel_read(ctx, ctx->version.scratchpad + sizeof(payload) + sizeof(adr), (void *)&val, sizeof(val));
return le32_to_cpu(val);
}
static int chip_sid(struct xfel_ctx_t * ctx, char * sid)
{
uint32_t id[4];
id[0] = R32(0x4004e600 + 0x0);
id[1] = R32(0x4004e600 + 0x4);
id[2] = R32(0x4004e600 + 0x8);
id[3] = R32(0x4004e600 + 0xc);
id[0] = payload_thumb_read32(ctx, 0x4004e600 + 0x0);
id[1] = payload_thumb_read32(ctx, 0x4004e600 + 0x4);
id[2] = payload_thumb_read32(ctx, 0x4004e600 + 0x8);
id[3] = payload_thumb_read32(ctx, 0x4004e600 + 0xc);
sprintf(sid, "%08x%08x%08x%08x", id[0], id[1], id[2], id[3]);
return 1;
}