diff options
Diffstat (limited to 'src/jtag/ft2232.c')
| -rw-r--r-- | src/jtag/ft2232.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/src/jtag/ft2232.c b/src/jtag/ft2232.c index c1973a3c..6bb4be93 100644 --- a/src/jtag/ft2232.c +++ b/src/jtag/ft2232.c @@ -90,11 +90,13 @@ typedef struct ft2232_layout_s int usbjtag_init(void); int jtagkey_init(void); int olimex_jtag_init(void); +int m5960_init(void); /* reset procedures for supported layouts */ void usbjtag_reset(int trst, int srst); void jtagkey_reset(int trst, int srst); void olimex_jtag_reset(int trst, int srst); +void m5960_reset(int trst, int srst); /* blink procedures for layouts that support a blinking led */ void olimex_jtag_blink(void); @@ -106,6 +108,7 @@ ft2232_layout_t ft2232_layouts[] = {"jtagkey_prototype_v1", jtagkey_init, jtagkey_reset, NULL}, {"signalyzer", usbjtag_init, usbjtag_reset, NULL}, {"olimex-jtag", olimex_jtag_init, olimex_jtag_reset, olimex_jtag_blink}, + {"m5960", m5960_init, m5960_reset, NULL}, {NULL, NULL, NULL}, }; @@ -718,6 +721,34 @@ void olimex_jtag_reset(int trst, int srst) DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction); } +void m5960_reset(int trst, int srst) +{ + if (trst == 1) + { + cur_state = TAP_TLR; + low_output &= ~nTRST; + } + else if (trst == 0) + { + low_output |= nTRST; + } + + if (srst == 1) + { + low_output |= nSRST; + } + else if (srst == 0) + { + low_output &= ~nSRST; + } + + /* command "set data bits low byte" */ + BUFFER_ADD = 0x80; + BUFFER_ADD = low_output; + BUFFER_ADD = low_direction; + DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction); +} + int ft2232_execute_queue() { jtag_command_t *cmd = jtag_command_queue; /* currently processed command */ @@ -1304,6 +1335,52 @@ int olimex_jtag_init(void) return ERROR_OK; } +int m5960_init(void) +{ + u8 buf[3]; + u32 bytes_written; + + low_output = 0x18; + low_direction = 0xfb; + + /* initialize low byte for jtag */ + buf[0] = 0x80; /* command "set data bits low byte" */ + buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */ + buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE[12]=out, n[ST]srst=out */ + DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]); + + if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3)) + { + ERROR("couldn't initialize FT2232 with 'm5960' layout"); + return ERROR_JTAG_INIT_FAILED; + } + + nTRST = 0x10; + nTRSTnOE = 0x0; /* not output enable for nTRST */ + nSRST = 0x20; + nSRSTnOE = 0x00; /* no output enable for nSRST */ + + high_output = 0x00; + high_direction = 0x0c; + + /* turn red LED1 on, LED2 off */ + high_output |= 0x08; + + /* initialize high port */ + buf[0] = 0x82; /* command "set data bits high byte" */ + buf[1] = high_output; /* value */ + buf[2] = high_direction; /* all outputs (xRST and xRSTnOE) */ + DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]); + + if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3)) + { + ERROR("couldn't initialize FT2232 with 'm5960' layout"); + return ERROR_JTAG_INIT_FAILED; + } + + return ERROR_OK; +} + void olimex_jtag_blink(void) { /* Olimex ARM-USB-OCD has a LED connected to ACBUS3 |