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drivers/bitbang: add support to switch to/from dormant state 

While there, replace the SWD_CMD_PARK macro to the magic number.

Change-Id: Id9094dcb2b010b9e894a5ed9e4a99d2287e5969c
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6691
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
This commit is contained in:
Antonio Borneo 2021-11-11 16:44:27 +01:00
parent ed44acce26
commit b4aa144c32
1 changed files with 18 additions and 2 deletions
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20
src/jtag/drivers/bitbang.c
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@ -434,10 +434,26 @@ static int bitbang_swd_switch_seq(enum swd_special_seq seq)
LOG_DEBUG("JTAG-to-SWD");
bitbang_swd_exchange(false, (uint8_t *)swd_seq_jtag_to_swd, 0, swd_seq_jtag_to_swd_len);
break;
case JTAG_TO_DORMANT:
LOG_DEBUG("JTAG-to-DORMANT");
bitbang_swd_exchange(false, (uint8_t *)swd_seq_jtag_to_dormant, 0, swd_seq_jtag_to_dormant_len);
break;
case SWD_TO_JTAG:
LOG_DEBUG("SWD-to-JTAG");
bitbang_swd_exchange(false, (uint8_t *)swd_seq_swd_to_jtag, 0, swd_seq_swd_to_jtag_len);
break;
case SWD_TO_DORMANT:
LOG_DEBUG("SWD-to-DORMANT");
bitbang_swd_exchange(false, (uint8_t *)swd_seq_swd_to_dormant, 0, swd_seq_swd_to_dormant_len);
break;
case DORMANT_TO_SWD:
LOG_DEBUG("DORMANT-to-SWD");
bitbang_swd_exchange(false, (uint8_t *)swd_seq_dormant_to_swd, 0, swd_seq_dormant_to_swd_len);
break;
case DORMANT_TO_JTAG:
LOG_DEBUG("DORMANT-to-JTAG");
bitbang_swd_exchange(false, (uint8_t *)swd_seq_dormant_to_jtag, 0, swd_seq_dormant_to_jtag_len);
break;
default:
LOG_ERROR("Sequence %d not supported", seq);
return ERROR_FAIL;
@ -465,7 +481,7 @@ static void bitbang_swd_read_reg(uint8_t cmd, uint32_t *value, uint32_t ap_delay
for (;;) {
uint8_t trn_ack_data_parity_trn[DIV_ROUND_UP(4 + 3 + 32 + 1 + 4, 8)];
cmd |= SWD_CMD_START | (1 << 7);
cmd |= SWD_CMD_START | SWD_CMD_PARK;
bitbang_swd_exchange(false, &cmd, 0, 8);
bitbang_interface->swdio_drive(false);
@ -526,7 +542,7 @@ static void bitbang_swd_write_reg(uint8_t cmd, uint32_t value, uint32_t ap_delay
buf_set_u32(trn_ack_data_parity_trn, 1 + 3 + 1, 32, value);
buf_set_u32(trn_ack_data_parity_trn, 1 + 3 + 1 + 32, 1, parity_u32(value));
cmd |= SWD_CMD_START | (1 << 7);
cmd |= SWD_CMD_START | SWD_CMD_PARK;
bitbang_swd_exchange(false, &cmd, 0, 8);
bitbang_interface->swdio_drive(false);