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user4 0x23 should be MSB. (#519) 

Signed-off-by: Jiuyang Liu <jiuyang.liu@sifive.com>
This commit is contained in:
Jiuyang Liu 2020-09-02 01:32:31 +08:00 committed by GitHub
parent 0a63eda7f2
commit 57b57989b4
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 1 deletions
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8
src/target/riscv/riscv.c
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@ -178,7 +178,7 @@ int bscan_tunnel_ir_width; /* if zero, then tunneling is not present/active */
uint8_t bscan_zero[4] = {0};
uint8_t bscan_one[4] = {1};
uint8_t ir_user4[4] = {0x23};
uint8_t ir_user4[4];
struct scan_field select_user4 = {
.in_value = NULL,
.out_value = ir_user4
@ -485,6 +485,12 @@ static int riscv_init_target(struct command_context *cmd_ctx,
select_idcode.num_bits = target->tap->ir_length;
if (bscan_tunnel_ir_width != 0) {
assert(target->tap->ir_length >= 6);
uint32_t ir_user4_raw = 0x23 << (target->tap->ir_length - 6);
ir_user4[0] = (uint8_t)ir_user4_raw;
ir_user4[1] = (uint8_t)(ir_user4_raw >>= 8);
ir_user4[2] = (uint8_t)(ir_user4_raw >>= 8);
ir_user4[3] = (uint8_t)(ir_user4_raw >>= 8);
select_user4.num_bits = target->tap->ir_length;
bscan_tunneled_ir_width[0] = bscan_tunnel_ir_width;
if (bscan_tunnel_type == BSCAN_TUNNEL_DATA_REGISTER)