From bc4f1620779fb64fe5a9bedeefcd9513770473b7 Mon Sep 17 00:00:00 2001
From: Tomek CEDRO <cederom@tlen.pl>
Date: Wed, 2 Nov 2011 03:46:25 +0000
Subject: driver/ft2232: Added raw-wire level debug of data read/written by
 ft2232. This might help debug bugs in drivers ;-)

---
 src/jtag/drivers/ft2232.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src')

diff --git a/src/jtag/drivers/ft2232.c b/src/jtag/drivers/ft2232.c
index df5c5e35..4d417899 100644
--- a/src/jtag/drivers/ft2232.c
+++ b/src/jtag/drivers/ft2232.c
@@ -729,6 +729,9 @@ int ft2232_transfer(void *device, int bits, char *mosidata, char *misodata, int
 	int retval, bit, i;
 	uint32_t bytes_written, bytes_read;
 
+	LOG_DEBUG("ft2232_transfer(device=@%p, bits=%d, mosidata=@%p, misodata=@%p, nLSDfirst=%d) ",\
+		(void*)device, bits, (void*)mosidata, (void*)misodata, nLSBfirst);
+
 	//No optimization for now, simply send one bit from one char element.
 	for (bit=0;bit<bits;bit++){
 		buf[0]=(nLSBfirst)?0x33:0x3b;	// Clock Bits In and Out LSb or MSb first.
@@ -746,6 +749,8 @@ int ft2232_transfer(void *device, int bits, char *mosidata, char *misodata, int
 		}
 		// FTDI MPSSE returns shift register value, our bit is MSb 
 		misodata[bit]=(misodata[bit]&(nLSBfirst?0x01:0x80))?1:0;
+		//USE THIS FOR WIRE-LEVEL DEBUG
+		//LOG_DEBUG("read 0x%02X written 0x%02X", misodata[bit], mosidata[bit]);
 	}
 
 	/* Check if MPSSE ERROR occured and print info if so. */
-- 
cgit v1.2.3


From 845d5f77d58c6547e28f3fd29ffa830f93e08f26 Mon Sep 17 00:00:00 2001
From: Tomek CEDRO <cederom@tlen.pl>
Date: Wed, 2 Nov 2011 03:48:31 +0000
Subject: transport/swd_drv: Fixed critical issue with bitswapping of
 transmitted data. ACK and DATA packets are always transmitted LSb-First, no
 matter how ARM draws its fuckin timing diagrams!

---
 src/transport/swd_libswd_drv_openocd.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

(limited to 'src')

diff --git a/src/transport/swd_libswd_drv_openocd.c b/src/transport/swd_libswd_drv_openocd.c
index acc8830c..49a1f946 100644
--- a/src/transport/swd_libswd_drv_openocd.c
+++ b/src/transport/swd_libswd_drv_openocd.c
@@ -62,7 +62,7 @@ int swd_drv_mosi_8(swd_ctx_t *swdctx, swd_cmd_t *cmd, char *data, int bits, int
  static char misodata[8], mosidata[8];
 
  /* Split output data into char array. */
- for (i=0;i<8;i++) mosidata[(nLSBfirst==SWD_DIR_LSBFIRST)?(i):(7-i)]=((1<<i)&(*data))?1:0; 
+ for (i=0;i<8;i++) mosidata[(nLSBfirst==SWD_DIR_LSBFIRST)?(i):(bits-1-i)]=((1<<i)&(*data))?1:0; 
  /* Then send that array into interface hardware. */
  res=jtag_interface->transfer(NULL, bits, mosidata, misodata, 0);
  if (res<0) return SWD_ERROR_DRIVER;
@@ -91,7 +91,7 @@ int swd_drv_mosi_32(swd_ctx_t *swdctx, swd_cmd_t *cmd, int *data, int bits, int
  static char misodata[32], mosidata[32];
 
  //UrJTAG drivers shift data LSB-First.
- for (i=0;i<32;i++) mosidata[(nLSBfirst==SWD_DIR_LSBFIRST)?(i):(31-i)]=((1<<i)&(*data))?1:0; 
+ for (i=0;i<32;i++) mosidata[(nLSBfirst==SWD_DIR_LSBFIRST)?(i):(bits-1-i)]=((1<<i)&(*data))?1:0; 
  res=jtag_interface->transfer(NULL, bits, mosidata, misodata, 0);
  if (res<0) return SWD_ERROR_DRIVER;
  return i;
@@ -116,12 +116,11 @@ int swd_drv_miso_8(swd_ctx_t *swdctx, swd_cmd_t *cmd, char *data, int bits, int
  static signed int res;
  static char misodata[8], mosidata[8];
 
- // This function sends and reveice MSb-first.
- res=jtag_interface->transfer(NULL, bits, mosidata, misodata, 0);
+ res=jtag_interface->transfer(NULL, bits, mosidata, misodata, SWD_DIR_LSBFIRST);
  if (res<0) return SWD_ERROR_DRIVER;
  /* Now we need to reconstruct the data byte from shifted in LSBfirst byte array. */
  *data=0;
- for (i=0;i<bits;i++) *data|=(misodata[(nLSBfirst==SWD_DIR_LSBFIRST)?(bits-1-i):(i)]?(1<<i):0);
+ for (i=0;i<bits;i++) *data|=misodata[(nLSBfirst==SWD_DIR_LSBFIRST)?(i):(bits-1-i)]?(1<<i):0;
  LOG_DEBUG("OpenOCD's swd_drv_miso_8(swdctx=@%p, cmd=@%p, data=@%p, bits=%d, nLSBfirst=0x%02X) reads: 0x%02X", (void*)swdctx, (void*)cmd, (void*)data, bits, nLSBfirst, *data);
  return i;
 }
@@ -145,11 +144,11 @@ int swd_drv_miso_32(swd_ctx_t *swdctx, swd_cmd_t *cmd, int *data, int bits, int
  static signed int res;
  static char misodata[32], mosidata[32];
 
- res=jtag_interface->transfer(NULL, bits, mosidata, misodata, 0);
+ res=jtag_interface->transfer(NULL, bits, mosidata, misodata, SWD_DIR_LSBFIRST);
  if (res<0) return SWD_ERROR_DRIVER;
  /* Now we need to reconstruct the data byte from shifted in LSBfirst byte array. */
  *data=0;
- for (i=0;i<bits;i++) *data|=(misodata[(nLSBfirst==SWD_DIR_LSBFIRST)?(bits-1-i):(i)]?(1<<i):0);
+ for (i=0;i<bits;i++) *data|=(misodata[(nLSBfirst==SWD_DIR_LSBFIRST)?(i):(bits-1-i)]?(1<<i):0);
  LOG_DEBUG("OpenOCD's swd_drv_miso_32(swdctx=@%p, cmd=@%p, data=@%p, bits=%d, nLSBfirst=0x%02X) reads: 0x%08X", (void*)swdctx, (void*)cmd, (void*)data, bits, nLSBfirst, *data);
  LOG_DEBUG("OpenOCD's swd_drv_miso_32() reads: 0x%08X\n", *data);
  return i;
-- 
cgit v1.2.3


From 0add1edbe7c67eb882417692b15c5794d2792430 Mon Sep 17 00:00:00 2001
From: Tomek CEDRO <cederom@tlen.pl>
Date: Wed, 2 Nov 2011 23:49:27 +0000
Subject: Fixed bad SWD_ACK values definitions.

---
 src/target/arm_adi_v5.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/target/arm_adi_v5.h b/src/target/arm_adi_v5.h
index c190c433..19ea0acf 100644
--- a/src/target/arm_adi_v5.h
+++ b/src/target/arm_adi_v5.h
@@ -41,9 +41,9 @@
 #define JTAG_DP_APACC		0xB
 
 /* three-bit ACK values for SWD access (sent LSB first) */
-#define SWD_ACK_OK		0x4
+#define SWD_ACK_OK		0x1
 #define SWD_ACK_WAIT		0x2
-#define SWD_ACK_FAULT		0x1
+#define SWD_ACK_FAULT		0x4
 
 #define DPAP_WRITE		0
 #define DPAP_READ		1
-- 
cgit v1.2.3