* Copyright (C) 2006 by Magnus Lundin *
* lundin@mlu.mine.nu *
* *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* *
* CoreSight (Light?) SerialWireJtagDebugPort *
* *
- * CoreSight™ DAP-Lite TRM, ARM DDI 0316A *
- * Cortex-M3™ TRM, ARM DDI 0337C *
+ * CoreSight(tm) DAP-Lite TRM, ARM DDI 0316A *
+ * Cortex-M3(tm) TRM, ARM DDI 0337C *
* *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "cortex_swjdp.h"
#include "jtag.h"
#include "log.h"
+#include "time_support.h"
#include <stdlib.h>
/*
* Transaction Mode:
* swjdp->trans_mode = TRANS_MODE_COMPOSITE;
- * Uses Overrun checking mode and does not do actual JTAG send/receive or transaction
+ * Uses Overrun checking mode and does not do actual JTAG send/receive or transaction
* result checking until swjdp_end_transaction()
* This must be done before using or deallocating any return variables.
* swjdp->trans_mode == TRANS_MODE_ATOMIC
{
scan_field_t fields[2];
u8 out_addr_buf;
-
- jtag_add_end_state(TAP_RTI);
+
+ jtag_add_end_state(TAP_IDLE);
arm_jtag_set_instr(jtag_info, instr, NULL);
- fields[0].device = jtag_info->chain_pos;
+ fields[0].tap = jtag_info->tap;
fields[0].num_bits = 3;
buf_set_u32(&out_addr_buf, 0, 3, ((reg_addr >> 1) & 0x6) | (RnW & 0x1));
fields[0].out_value = &out_addr_buf;
fields[0].in_handler = NULL;
fields[0].in_handler_priv = NULL;
- fields[1].device = jtag_info->chain_pos;
+ fields[1].tap = jtag_info->tap;
fields[1].num_bits = 32;
fields[1].out_value = outvalue;
fields[1].out_mask = NULL;
scan_field_t fields[2];
u8 out_value_buf[4];
u8 out_addr_buf;
-
- jtag_add_end_state(TAP_RTI);
+
+ jtag_add_end_state(TAP_IDLE);
arm_jtag_set_instr(jtag_info, instr, NULL);
- fields[0].device = jtag_info->chain_pos;
+ fields[0].tap = jtag_info->tap;
fields[0].num_bits = 3;
buf_set_u32(&out_addr_buf, 0, 3, ((reg_addr >> 1) & 0x6) | (RnW & 0x1));
fields[0].out_value = &out_addr_buf;
fields[0].in_handler = NULL;
fields[0].in_handler_priv = NULL;
- fields[1].device = jtag_info->chain_pos;
+ fields[1].tap = jtag_info->tap;
fields[1].num_bits = 32;
buf_set_u32(out_value_buf, 0, 32, outvalue);
fields[1].out_value = out_value_buf;
return ERROR_OK;
}
-/* scan_inout_check adds one extra inscan for DPAP_READ commands to read variables */
+/* scan_inout_check adds one extra inscan for DPAP_READ commands to read variables */
int scan_inout_check(swjdp_common_t *swjdp, u8 instr, u8 reg_addr, u8 RnW, u8 *outvalue, u8 *invalue)
{
swjdp_scan(swjdp->jtag_info, instr, reg_addr, RnW, outvalue, NULL, NULL);
{
swjdp_scan(swjdp->jtag_info, SWJDP_IR_DPACC, DP_RDBUFF, DPAP_READ, 0, invalue, &swjdp->ack);
}
-
+
/* In TRANS_MODE_ATOMIC all SWJDP_IR_APACC transactions wait for ack=OK/FAULT and the check CTRL_STAT */
if ((instr == SWJDP_IR_APACC) && (swjdp->trans_mode == TRANS_MODE_ATOMIC))
{
{
swjdp_scan_u32(swjdp->jtag_info, SWJDP_IR_DPACC, DP_RDBUFF, DPAP_READ, 0, invalue, &swjdp->ack);
}
-
+
/* In TRANS_MODE_ATOMIC all SWJDP_IR_APACC transactions wait for ack=OK/FAULT and then check CTRL_STAT */
if ((instr == SWJDP_IR_APACC) && (swjdp->trans_mode == TRANS_MODE_ATOMIC))
{
int swjdp_transaction_endcheck(swjdp_common_t *swjdp)
{
int retval;
- int waitcount = 0;
u32 ctrlstat;
keep_alive();
-
+
+ /* Danger!!!! BROKEN!!!! */
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat);
+ /* Danger!!!! BROKEN!!!! Why will jtag_execute_queue() fail here????
+ R956 introduced the check on return value here and now Michael Schwingen reports
+ that this code no longer works....
+
+ https://lists.berlios.de/pipermail/openocd-development/2008-September/003107.html
+ */
+ if ((retval=jtag_execute_queue())!=ERROR_OK)
+ {
+ LOG_ERROR("BUG: Why does this fail the first time????");
+ }
+ /* Why??? second time it works??? */
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat);
if ((retval=jtag_execute_queue())!=ERROR_OK)
return retval;
-
+
swjdp->ack = swjdp->ack & 0x7;
-
+
+ long long then=timeval_ms();
while (swjdp->ack != 2)
{
if (swjdp->ack == 1)
{
- waitcount++;
- if (waitcount > 100)
+ if ((timeval_ms()-then) > 1000)
{
- LOG_WARNING("Timeout waiting for ACK = OK/FAULT in SWJDP transaction");
+ LOG_WARNING("Timeout (1000ms) waiting for ACK = OK/FAULT in SWJDP transaction");
return ERROR_JTAG_DEVICE_ERROR;
}
}
else
{
u32 dcb_dhcsr,nvic_shcsr, nvic_bfar, nvic_cfsr;
-
+
if (ctrlstat & SSTICKYORUN)
LOG_ERROR("SWJ-DP OVERRUN - check clock or reduce jtag speed");
-
+
if (ctrlstat & SSTICKYERR)
LOG_ERROR("SWJ-DP STICKY ERROR");
-
+
/* Clear Sticky Error Bits */
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_WRITE, swjdp->dp_ctrl_stat | SSTICKYORUN | SSTICKYERR, NULL);
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat);
return retval;
LOG_DEBUG("swjdp: status 0x%x", ctrlstat);
-
- /* Can we find out the reason for the error ?? */
+
+ /* Can we find out the reason for the error ?? */
ahbap_read_system_atomic_u32(swjdp, DCB_DHCSR, &dcb_dhcsr);
ahbap_read_system_atomic_u32(swjdp, NVIC_SHCSR, &nvic_shcsr);
ahbap_read_system_atomic_u32(swjdp, NVIC_CFSR, &nvic_cfsr);
int ahbap_write_reg_u32(swjdp_common_t *swjdp, u32 reg_addr, u32 value)
{
u8 out_value_buf[4];
-
+
buf_set_u32(out_value_buf, 0, 32, value);
swjdp_bankselect_apacc(swjdp, reg_addr);
scan_inout_check(swjdp, SWJDP_IR_APACC, reg_addr, DPAP_WRITE, out_value_buf, NULL);
swjdp->ap_tar_value = tar;
}
if (csw & CSW_ADDRINC_MASK)
- {
+ {
/* Do not cache TAR value when autoincrementing */
swjdp->ap_tar_value = -1;
}
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, address & 0xFFFFFFF0);
ahbap_read_reg_u32(swjdp, AHBAP_BD0 | (address & 0xC), value );
-
+
return ERROR_OK;
}
int ahbap_read_system_atomic_u32(swjdp_common_t *swjdp, u32 address, u32 *value)
{
ahbap_read_system_u32(swjdp, address, value);
-
+
return swjdp_transaction_endcheck(swjdp);
}
int ahbap_write_system_atomic_u32(swjdp_common_t *swjdp, u32 address, u32 value)
{
ahbap_write_system_u32(swjdp, address, value);
-
+
return swjdp_transaction_endcheck(swjdp);
}
int wcount, blocksize, writecount, errorcount = 0, retval = ERROR_OK;
u32 adr = address;
u8* pBuffer = buffer;
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
count >>= 2;
wcount = count;
-
+
/* if we have an unaligned access - reorder data */
if (adr & 0x3u)
{
{
int i;
outvalue = *((u32*)pBuffer);
-
+
for (i = 0; i < 4; i++ )
{
*((u8*)pBuffer + (adr & 0x3)) = outvalue;
pBuffer += 4;
}
}
-
+
while (wcount > 0)
{
/* Adjust to write blocks within 4K aligned boundaries */
blocksize = (0x1000 - (0xFFF & address)) >> 2;
if (wcount < blocksize)
blocksize = wcount;
-
+
/* handle unaligned data at 4k boundary */
if (blocksize == 0)
blocksize = 1;
-
+
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address);
-
+
for (writecount = 0; writecount < blocksize; writecount++)
{
ahbap_write_reg(swjdp, AHBAP_DRW, buffer + 4 * writecount );
}
-
+
if (swjdp_transaction_endcheck(swjdp) == ERROR_OK)
{
wcount = wcount - blocksize;
{
errorcount++;
}
-
+
if (errorcount > 1)
{
LOG_WARNING("Block write error address 0x%x, wcount 0x%x", address, wcount);
return ERROR_JTAG_DEVICE_ERROR;
}
}
-
+
return retval;
}
u32 outvalue;
int retval = ERROR_OK;
int wcount, blocksize, writecount, i;
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
wcount = count >> 1;
-
+
while (wcount > 0)
{
int nbytes;
-
+
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address)) >> 1;
-
+
if (wcount < blocksize)
blocksize = wcount;
-
+
/* handle unaligned data at 4k boundary */
if (blocksize == 0)
blocksize = 1;
-
+
ahbap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_PACKED, address);
writecount = blocksize;
-
+
do
{
nbytes = MIN((writecount << 1), 4);
-
+
if (nbytes < 4 )
{
if (ahbap_write_buf_u16(swjdp, buffer, nbytes, address) != ERROR_OK)
LOG_WARNING("Block read error address 0x%x, count 0x%x", address, count);
return ERROR_JTAG_DEVICE_ERROR;
}
-
+
address += nbytes >> 1;
}
else
{
outvalue = *((u32*)buffer);
-
+
for (i = 0; i < nbytes; i++ )
{
*((u8*)buffer + (address & 0x3)) = outvalue;
outvalue >>= 8;
address++;
}
-
+
outvalue = *((u32*)buffer);
ahbap_write_reg_u32(swjdp, AHBAP_DRW, outvalue);
if (swjdp_transaction_endcheck(swjdp) != ERROR_OK)
return ERROR_JTAG_DEVICE_ERROR;
}
}
-
+
buffer += nbytes >> 1;
writecount -= nbytes >> 1;
-
+
} while (writecount);
wcount -= blocksize;
}
-
+
return retval;
}
{
u32 outvalue;
int retval = ERROR_OK;
-
+
if (count >= 4)
return ahbap_write_buf_packed_u16(swjdp, buffer, count, address);
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
while (count > 0)
{
ahbap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_SINGLE, address);
u32 outvalue;
int retval = ERROR_OK;
int wcount, blocksize, writecount, i;
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
wcount = count;
-
+
while (wcount > 0)
{
int nbytes;
-
+
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address));
-
+
if (wcount < blocksize)
blocksize = wcount;
-
+
ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_PACKED, address);
writecount = blocksize;
-
+
do
{
nbytes = MIN(writecount, 4);
-
+
if (nbytes < 4 )
{
if (ahbap_write_buf_u8(swjdp, buffer, nbytes, address) != ERROR_OK)
LOG_WARNING("Block read error address 0x%x, count 0x%x", address, count);
return ERROR_JTAG_DEVICE_ERROR;
}
-
+
address += nbytes;
}
else
{
outvalue = *((u32*)buffer);
-
+
for (i = 0; i < nbytes; i++ )
{
*((u8*)buffer + (address & 0x3)) = outvalue;
outvalue >>= 8;
address++;
}
-
+
outvalue = *((u32*)buffer);
ahbap_write_reg_u32(swjdp, AHBAP_DRW, outvalue);
if (swjdp_transaction_endcheck(swjdp) != ERROR_OK)
return ERROR_JTAG_DEVICE_ERROR;
}
}
-
+
buffer += nbytes;
writecount -= nbytes;
-
+
} while (writecount);
wcount -= blocksize;
}
-
+
return retval;
}
{
u32 outvalue;
int retval = ERROR_OK;
-
+
if (count >= 4)
return ahbap_write_buf_packed_u8(swjdp, buffer, count, address);
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
while (count > 0)
{
ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
address++;
buffer++;
}
-
+
return retval;
}
int wcount, blocksize, readcount, errorcount = 0, retval = ERROR_OK;
u32 adr = address;
u8* pBuffer = buffer;
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
count >>= 2;
wcount = count;
-
+
while (wcount > 0)
{
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address)) >> 2;
if (wcount < blocksize)
blocksize = wcount;
-
+
/* handle unaligned data at 4k boundary */
if (blocksize == 0)
blocksize = 1;
-
+
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address);
-
+
/* Scan out first read */
swjdp_scan(swjdp->jtag_info, SWJDP_IR_APACC, AHBAP_DRW, DPAP_READ, 0, NULL, NULL);
for (readcount = 0; readcount < blocksize - 1; readcount++)
/* Scan out read instruction and scan in previous value */
swjdp_scan(swjdp->jtag_info, SWJDP_IR_APACC, AHBAP_DRW, DPAP_READ, 0, buffer + 4 * readcount, &swjdp->ack);
}
-
+
/* Scan in last value */
swjdp_scan(swjdp->jtag_info, SWJDP_IR_DPACC, DP_RDBUFF, DPAP_READ, 0, buffer + 4 * readcount, &swjdp->ack);
if (swjdp_transaction_endcheck(swjdp) == ERROR_OK)
{
wcount = wcount - blocksize;
address += 4 * blocksize;
- buffer += 4 * blocksize;
+ buffer += 4 * blocksize;
}
else
{
errorcount++;
}
-
+
if (errorcount > 1)
{
LOG_WARNING("Block read error address 0x%x, count 0x%x", address, count);
return ERROR_JTAG_DEVICE_ERROR;
}
}
-
+
/* if we have an unaligned access - reorder data */
if (adr & 0x3u)
{
{
int i;
u32 data = *((u32*)pBuffer);
-
+
for (i = 0; i < 4; i++ )
{
*((u8*)pBuffer) = (data >> 8 * (adr & 0x3));
}
}
}
-
+
return retval;
}
u32 invalue;
int retval = ERROR_OK;
int wcount, blocksize, readcount, i;
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
wcount = count >> 1;
-
+
while (wcount > 0)
{
int nbytes;
-
+
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address)) >> 1;
if (wcount < blocksize)
blocksize = wcount;
-
+
ahbap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_PACKED, address);
-
+
/* handle unaligned data at 4k boundary */
if (blocksize == 0)
blocksize = 1;
readcount = blocksize;
-
+
do
{
ahbap_read_reg_u32(swjdp, AHBAP_DRW, &invalue );
LOG_WARNING("Block read error address 0x%x, count 0x%x", address, count);
return ERROR_JTAG_DEVICE_ERROR;
}
-
+
nbytes = MIN((readcount << 1), 4);
-
+
for (i = 0; i < nbytes; i++ )
{
*((u8*)buffer) = (invalue >> 8 * (address & 0x3));
buffer++;
address++;
}
-
+
readcount -= (nbytes >> 1);
} while (readcount);
wcount -= blocksize;
}
-
+
return retval;
}
{
u32 invalue, i;
int retval = ERROR_OK;
-
+
if (count >= 4)
return ahbap_read_buf_packed_u16(swjdp, buffer, count, address);
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
while (count > 0)
{
ahbap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_SINGLE, address);
u32 invalue;
int retval = ERROR_OK;
int wcount, blocksize, readcount, i;
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
wcount = count;
-
+
while (wcount > 0)
{
int nbytes;
-
+
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address));
-
+
if (wcount < blocksize)
blocksize = wcount;
-
+
ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_PACKED, address);
readcount = blocksize;
-
+
do
{
ahbap_read_reg_u32(swjdp, AHBAP_DRW, &invalue );
LOG_WARNING("Block read error address 0x%x, count 0x%x", address, count);
return ERROR_JTAG_DEVICE_ERROR;
}
-
+
nbytes = MIN(readcount, 4);
-
+
for (i = 0; i < nbytes; i++ )
{
*((u8*)buffer) = (invalue >> 8 * (address & 0x3));
buffer++;
address++;
}
-
+
readcount -= nbytes;
} while (readcount);
wcount -= blocksize;
}
-
+
return retval;
}
{
u32 invalue;
int retval = ERROR_OK;
-
+
if (count >= 4)
return ahbap_read_buf_packed_u8(swjdp, buffer, count, address);
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
while (count > 0)
{
ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
{
int retval;
u32 dcrdr;
-
+
/* because the DCB_DCRDR is used for the emulated dcc channel
* we gave to save/restore the DCB_DCRDR when used */
-
+
ahbap_read_system_atomic_u32(swjdp, DCB_DCRDR, &dcrdr);
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
/* ahbap_write_system_u32(swjdp, DCB_DCRSR, regnum); */
/* ahbap_read_system_u32(swjdp, DCB_DCRDR, value); */
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0);
ahbap_read_reg_u32(swjdp, AHBAP_BD0 | (DCB_DCRDR & 0xC), value );
-
+
retval = swjdp_transaction_endcheck(swjdp);
ahbap_write_system_atomic_u32(swjdp, DCB_DCRDR, dcrdr);
return retval;
{
int retval;
u32 dcrdr;
-
+
/* because the DCB_DCRDR is used for the emulated dcc channel
* we gave to save/restore the DCB_DCRDR when used */
-
+
ahbap_read_system_atomic_u32(swjdp, DCB_DCRDR, &dcrdr);
-
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
+
/* ahbap_write_system_u32(swjdp, DCB_DCRDR, core_regs[i]); */
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0);
ahbap_write_reg_u32(swjdp, AHBAP_BD0 | (DCB_DCRDR & 0xC), value );
/* ahbap_write_system_u32(swjdp, DCB_DCRSR, i | DCRSR_WnR ); */
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0);
ahbap_write_reg_u32(swjdp, AHBAP_BD0 | (DCB_DCRSR & 0xC), regnum | DCRSR_WnR );
-
+
retval = swjdp_transaction_endcheck(swjdp);
ahbap_write_system_atomic_u32(swjdp, DCB_DCRDR, dcrdr);
return retval;
u32 ctrlstat;
int cnt = 0;
int retval;
-
+
LOG_DEBUG(" ");
-
+
swjdp->ap_csw_value = -1;
swjdp->ap_tar_value = -1;
swjdp->trans_mode = TRANS_MODE_ATOMIC;
swjdp_read_dpacc(swjdp, &dummy, DP_CTRL_STAT);
swjdp_write_dpacc(swjdp, SSTICKYERR, DP_CTRL_STAT);
swjdp_read_dpacc(swjdp, &dummy, DP_CTRL_STAT);
-
+
swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ;
swjdp_write_dpacc(swjdp, swjdp->dp_ctrl_stat, DP_CTRL_STAT);
swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ | CORUNDETECT;
swjdp_write_dpacc(swjdp, swjdp->dp_ctrl_stat, DP_CTRL_STAT);
swjdp_read_dpacc(swjdp, &dummy, DP_CTRL_STAT);
-
+
ahbap_read_reg_u32(swjdp, 0xFC, &idreg);
ahbap_read_reg_u32(swjdp, 0xF8, &romaddr);
-
+
LOG_DEBUG("AHB-AP ID Register 0x%x, Debug ROM Address 0x%x", idreg, romaddr);
-
+
return ERROR_OK;
}
projects / openocd / blobdiff