diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/jtag/ft2232.c | 74 | ||||
| -rw-r--r-- | src/target/interface/sheevaplug.cfg | 4 |
2 files changed, 78 insertions, 0 deletions
diff --git a/src/jtag/ft2232.c b/src/jtag/ft2232.c index 115cd7c2..50ff6548 100644 --- a/src/jtag/ft2232.c +++ b/src/jtag/ft2232.c @@ -124,6 +124,7 @@ int turtle_init(void); int comstick_init(void); int stm32stick_init(void); int axm0432_jtag_init(void); +int sheevaplug_init(void); /* reset procedures for supported layouts */ void usbjtag_reset(int trst, int srst); @@ -134,6 +135,7 @@ void turtle_reset(int trst, int srst); void comstick_reset(int trst, int srst); void stm32stick_reset(int trst, int srst); void axm0432_jtag_reset(int trst, int srst); +void sheevaplug_reset(int trst, int srst); /* blink procedures for layouts that support a blinking led */ void olimex_jtag_blink(void); @@ -153,6 +155,7 @@ ft2232_layout_t ft2232_layouts[] = { "comstick", comstick_init, comstick_reset, NULL }, { "stm32stick", stm32stick_init, stm32stick_reset, NULL }, { "axm0432_jtag", axm0432_jtag_init, axm0432_jtag_reset, NULL }, + {"sheevaplug", sheevaplug_init, sheevaplug_reset, NULL }, { NULL, NULL, NULL }, }; @@ -1253,6 +1256,26 @@ void stm32stick_reset(int trst, int srst) } + +void sheevaplug_reset(int trst, int srst) +{ + if (trst == 1) + high_output &= ~nTRST; + else if (trst == 0) + high_output |= nTRST; + + if (srst == 1) + high_output &= ~nSRSTnOE; + else if (srst == 0) + high_output |= nSRSTnOE; + + /* command "set data bits high byte" */ + BUFFER_ADD = 0x82; + BUFFER_ADD = high_output; + BUFFER_ADD = high_direction; + LOG_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 */ @@ -2261,6 +2284,57 @@ int stm32stick_init(void) } +int sheevaplug_init(void) +{ + u8 buf[3]; + u32 bytes_written; + + low_output = 0x08; + low_direction = 0x1b; + + /* 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 */ + LOG_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)) + { + LOG_ERROR("couldn't initialize FT2232 with 'sheevaplug' layout"); + return ERROR_JTAG_INIT_FAILED; + } + + nTRSTnOE = 0x1; + nTRST = 0x02; + nSRSTnOE = 0x4; + nSRST = 0x08; + + high_output = 0x0; + high_direction = 0x0f; + + /* nTRST is always push-pull */ + high_output &= ~nTRSTnOE; + high_output |= nTRST; + + /* nSRST is always open-drain */ + high_output |= nSRSTnOE; + high_output &= ~nSRST; + + /* initialize high port */ + buf[0] = 0x82; /* command "set data bits high byte" */ + buf[1] = high_output; /* value */ + buf[2] = high_direction; /* all outputs - xRST */ + LOG_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)) + { + LOG_ERROR("couldn't initialize FT2232 with 'sheevaplug' layout"); + return ERROR_JTAG_INIT_FAILED; + } + + return ERROR_OK; +} + void olimex_jtag_blink(void) { /* Olimex ARM-USB-OCD has a LED connected to ACBUS3 diff --git a/src/target/interface/sheevaplug.cfg b/src/target/interface/sheevaplug.cfg new file mode 100644 index 00000000..e7e72a98 --- /dev/null +++ b/src/target/interface/sheevaplug.cfg @@ -0,0 +1,4 @@ +interface ft2232
+ft2232_layout sheevaplug
+ft2232_vid_pid 0x0403 0x6010
+jtag_khz 3000
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