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| author | Paul Fertser <fercerpav@gmail.com> | 2016-09-29 20:41:29 +0300 |
|---|---|---|
| committer | Andreas Fritiofson <andreas.fritiofson@gmail.com> | 2016-10-17 09:19:59 +0100 |
| commit | 67c9a5561ec7355a4a91d6ea7b861bb2c1a83c03 (patch) | |
| tree | 063d2b60a9f0a5f78d736c0dc7457aae3884fbc4 | |
| parent | 5fa3bfa074ccc826c51151ac5c306987c99bf2b2 (diff) | |
| download | riscv-openocd-67c9a5561ec7355a4a91d6ea7b861bb2c1a83c03.zip riscv-openocd-67c9a5561ec7355a4a91d6ea7b861bb2c1a83c03.tar.gz riscv-openocd-67c9a5561ec7355a4a91d6ea7b861bb2c1a83c03.tar.bz2 | |
jtag: drivers: cmsis-dap: add TRST handling
Even when TRST and SRST are not present in reset_config we still should
set them appropriately (to 1) as we can't tristate them anyhow.
Change-Id: Iec5bcf09340136f5e6ccfb05fa2697c53fa6609f
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/3798
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
| -rw-r--r-- | src/jtag/drivers/cmsis_dap_usb.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/src/jtag/drivers/cmsis_dap_usb.c b/src/jtag/drivers/cmsis_dap_usb.c index a07064b..7791840 100644 --- a/src/jtag/drivers/cmsis_dap_usb.c +++ b/src/jtag/drivers/cmsis_dap_usb.c @@ -118,6 +118,13 @@ static bool swd_mode; * Bit 7: nRESET */ +#define SWJ_PIN_TCK (1<<0) +#define SWJ_PIN_TMS (1<<1) +#define SWJ_PIN_TDI (1<<2) +#define SWJ_PIN_TDO (1<<3) +#define SWJ_PIN_TRST (1<<5) +#define SWJ_PIN_SRST (1<<7) + /* CMSIS-DAP SWD Commands */ #define CMD_DAP_SWD_CONFIGURE 0x13 @@ -764,12 +771,12 @@ static int cmsis_dap_get_status(void) if (retval == ERROR_OK) { LOG_INFO("SWCLK/TCK = %d SWDIO/TMS = %d TDI = %d TDO = %d nTRST = %d nRESET = %d", - (d & (0x01 << 0)) ? 1 : 0, /* Bit 0: SWCLK/TCK */ - (d & (0x01 << 1)) ? 1 : 0, /* Bit 1: SWDIO/TMS */ - (d & (0x01 << 2)) ? 1 : 0, /* Bit 2: TDI */ - (d & (0x01 << 3)) ? 1 : 0, /* Bit 3: TDO */ - (d & (0x01 << 5)) ? 1 : 0, /* Bit 5: nTRST */ - (d & (0x01 << 7)) ? 1 : 0); /* Bit 7: nRESET */ + (d & SWJ_PIN_TCK) ? 1 : 0, + (d & SWJ_PIN_TMS) ? 1 : 0, + (d & SWJ_PIN_TDI) ? 1 : 0, + (d & SWJ_PIN_TDO) ? 1 : 0, + (d & SWJ_PIN_TRST) ? 1 : 0, + (d & SWJ_PIN_SRST) ? 1 : 0); } return retval; @@ -990,8 +997,17 @@ static int cmsis_dap_quit(void) static void cmsis_dap_execute_reset(struct jtag_command *cmd) { - int retval = cmsis_dap_cmd_DAP_SWJ_Pins(cmd->cmd.reset->srst ? 0 : (1 << 7), \ - (1 << 7), 0, NULL); + /* Set both TRST and SRST even if they're not enabled as + * there's no way to tristate them */ + uint8_t pins = 0; + + if (!cmd->cmd.reset->srst) + pins |= SWJ_PIN_SRST; + if (!cmd->cmd.reset->trst) + pins |= SWJ_PIN_TRST; + + int retval = cmsis_dap_cmd_DAP_SWJ_Pins(pins, + SWJ_PIN_TRST | SWJ_PIN_SRST, 0, NULL); if (retval != ERROR_OK) LOG_ERROR("CMSIS-DAP: Interface reset failed"); } |