diff options
Diffstat (limited to 'src/jtag')
| -rw-r--r-- | src/jtag/drivers/jlink.c | 97 |
1 files changed, 95 insertions, 2 deletions
diff --git a/src/jtag/drivers/jlink.c b/src/jtag/drivers/jlink.c index 5dd09bc1..54fc4c11 100644 --- a/src/jtag/drivers/jlink.c +++ b/src/jtag/drivers/jlink.c @@ -75,22 +75,45 @@ static uint8_t usb_emu_result_buffer[JLINK_EMU_RESULT_BUFFER_SIZE]; /* Constants for JLink command */ #define EMU_CMD_VERSION 0x01 +#define EMU_CMD_RESET_TRST 0x02 +#define EMU_CMD_RESET_TARGET 0x03 #define EMU_CMD_SET_SPEED 0x05 #define EMU_CMD_GET_STATE 0x07 +#define EMU_CMD_SET_KS_POWER 0x08 +#define EMU_CMD_GET_SPEEDS 0xc0 +#define EMU_CMD_GET_HW_INFO 0xc1 +#define EMU_CMD_GET_COUNTERS 0xc2 +#define EMU_CMD_SELECT_IF 0xc7 #define EMU_CMD_HW_CLOCK 0xc8 #define EMU_CMD_HW_TMS0 0xc9 #define EMU_CMD_HW_TMS1 0xca +#define EMU_CMD_HW_DATA0 0xcb +#define EMU_CMD_HW_DATA1 0xcc +#define EMU_CMD_HW_JTAG 0xcd #define EMU_CMD_HW_JTAG2 0xce #define EMU_CMD_HW_JTAG3 0xcf +#define EMU_CMD_HW_RELEASE_RESET_STOP_EX 0xd0 +#define EMU_CMD_HW_RELEASE_RESET_STOP_TIMED 0xd1 #define EMU_CMD_GET_MAX_MEM_BLOCK 0xd4 +#define EMU_CMD_HW_JTAG_WRITE 0xd5 +#define EMU_CMD_HW_JTAG_GET_RESULT 0xd6 #define EMU_CMD_HW_RESET0 0xdc #define EMU_CMD_HW_RESET1 0xdd #define EMU_CMD_HW_TRST0 0xde #define EMU_CMD_HW_TRST1 0xdf #define EMU_CMD_GET_CAPS 0xe8 +#define EMU_CMD_GET_CPU_CAPS 0xe9 +#define EMU_CMD_EXEC_CPU_CMD 0xea +#define EMU_CMD_GET_CAPS_EX 0xed #define EMU_CMD_GET_HW_VERSION 0xf0 +#define EMU_CMD_WRITE_DCC 0xf1 #define EMU_CMD_READ_CONFIG 0xf2 #define EMU_CMD_WRITE_CONFIG 0xf3 +#define EMU_CMD_WRITE_MEM 0xf4 +#define EMU_CMD_READ_MEM 0xf5 +#define EMU_CMD_MEASURE_RTCK_REACT 0xf6 +#define EMU_CMD_WRITE_MEM_ARM79 0xf7 +#define EMU_CMD_READ_MEM_ARM79 0xf8 /* bits return from EMU_CMD_GET_CAPS */ #define EMU_CAP_RESERVED_1 0 @@ -400,6 +423,67 @@ static int jlink_khz(int khz, int *jtag_speed) return ERROR_OK; } +/* + * select transport interface + * + * @param iface [0..31] currently: 0=JTAG, 1=SWD + * @returns ERROR_OK or ERROR_ code + * + * @pre jlink_handle must be opened + * @pre function may be called only for devices, that have + * EMU_CAP_SELECT_IF capability enabled + */ +static int jlink_select_interface(int iface) +{ + /* According to Segger's document RM08001-R7 Date: October 8, 2010, + * http://www.segger.com/admin/uploads/productDocs/RM08001_JLinkUSBProtocol.pdf + * section 5.5.3 EMU_CMD_SELECT_IF + * > SubCmd 1..31 to select interface (0..31) + * + * The table below states: + * 0 TIF_JTAG + * 1 TIF_SWD + * + * This obviosly means that to select TIF_JTAG one should write SubCmd = 1. + * + * In fact, JTAG interface operates when SubCmd=0 + * + * It looks like a typo in documentation, because interfaces 0..31 could not + * be selected by 1..31 range command. + */ + assert(iface >= 0 && iface < 32); + int result; + + /* get available interfaces */ + usb_out_buffer[0] = EMU_CMD_SELECT_IF; + usb_out_buffer[1] = 0xff; + + result = jlink_usb_io(jlink_handle, 2, 4); + if (result != ERROR_OK) { + LOG_ERROR("J-Link query interface failed (%d)", result); + return ERROR_JTAG_DEVICE_ERROR; + } + + uint32_t iface_mask = buf_get_u32(usb_in_buffer, 0, 32); + + if (!(iface_mask & (1<<iface))) { + LOG_ERROR("J-Link requesting to select unsupported interface (%x)", iface_mask); + return ERROR_JTAG_DEVICE_ERROR; + } + + /* Select interface */ + usb_out_buffer[0] = EMU_CMD_SELECT_IF; + usb_out_buffer[1] = iface; + + result = jlink_usb_io(jlink_handle, 2, 4); + if (result != ERROR_OK) { + LOG_ERROR("J-Link interface select failed (%d)", result); + return ERROR_JTAG_DEVICE_ERROR; + } + + return ERROR_OK; +} + static int jlink_init(void) { int i; @@ -441,6 +525,17 @@ static int jlink_init(void) jlink_get_status(); } + /* + * Some versions of Segger's software do not select JTAG interface by default. + * + * Segger recommends to select interface necessarily as a part of init process, + * in case any previous session leaves improper interface selected. + * + * Until SWD implemented, select only JTAG interface here. + */ + if (jlink_caps & (1<<EMU_CAP_SELECT_IF)) + jlink_select_interface(0); + LOG_INFO("J-Link JTAG Interface ready"); jlink_reset(0, 0); @@ -749,8 +844,6 @@ static int jlink_set_config(struct jlink_config *cfg) static const char * const unsupported_versions[] = { "Jan 31 2011", "JAN 31 2011", - "Mar 19 2012", /* V4.44 */ - "May 3 2012", /* V4.46 "J-Link ARM V8 compiled May 3 2012 18:36:22" */ NULL /* End of list */ }; |