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>

diff --git a/src/jtag/drivers/bitbang.c b/src/jtag/drivers/bitbang.c
index 5c4febb20140cdfc0ac967927b5ea446a500f4f7..d202a059610f057b1a462434fe5b80eb875dc228 100644 (file)
--- a/src/jtag/drivers/bitbang.c
+++ b/src/jtag/drivers/bitbang.c
@@ -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);