---
src/jtag/ft2232.c | 74 +++++++++++++++++++++++++++++++++++
src/target/interface/sheevaplug.cfg | 4 ++
2 files changed, 78 insertions(+), 0 deletions(-)
create mode 100644 src/target/interface/sheevaplug.cfg
diff --git a/src/jtag/ft2232.c b/src/jtag/ft2232.c
index 115cd7c..50ff654 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 0000000..64d52b2
--- /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
--
1.6.2-rc2.GIT
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