--- /dev/null
+/***************************************************************************
+ * Copyright (C) 2006 by Magnus Lundin *
+ * lundin@mlu.mine.nu *
+ * *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * Copyright (C) 2009 by Oyvind Harboe *
+ * oyvind.harboe@zylin.com *
+ * *
+ * 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 *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ ***************************************************************************/
+/***************************************************************************
+ * *
+ * This file implements support for the ARM Debug Interface v5 (ADI_V5) *
+ * *
+ * ARM(tm) Debug Interface v5 Architecture Specification ARM IHI 0031A *
+ * *
+ * CoreSight(tm) DAP-Lite TRM, ARM DDI 0316A *
+ * Cortex-M3(tm) TRM, ARM DDI 0337C *
+ * *
+***************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "replacements.h"
+
+#include "arm_adi_v5.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
+ * result checking until swjdp_end_transaction()
+ * This must be done before using or deallocating any return variables.
+ * swjdp->trans_mode == TRANS_MODE_ATOMIC
+ * All reads and writes to the AHB bus are checked for valid completion, and return values
+ * are immediatley available.
+*/
+
+/***************************************************************************
+ * *
+ * DPACC and APACC scanchain access through JTAG-DP *
+ * *
+***************************************************************************/
+
+/* Scan out and in from target ordered u8 buffers */
+int adi_jtag_dp_scan(arm_jtag_t *jtag_info, u8 instr, u8 reg_addr, u8 RnW, u8 *outvalue, u8 *invalue, u8 *ack)
+{
+ scan_field_t fields[2];
+ u8 out_addr_buf;
+
+ jtag_add_end_state(TAP_IDLE);
+ arm_jtag_set_instr(jtag_info, instr, NULL);
+
+ 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].out_mask = NULL;
+ fields[0].in_value = ack;
+ fields[0].in_check_value = NULL;
+ fields[0].in_check_mask = NULL;
+ fields[0].in_handler = NULL;
+ fields[0].in_handler_priv = NULL;
+
+ fields[1].tap = jtag_info->tap;
+ fields[1].num_bits = 32;
+ fields[1].out_value = outvalue;
+ fields[1].out_mask = NULL;
+ fields[1].in_value = invalue;
+ fields[1].in_handler = NULL;
+ fields[1].in_handler_priv = NULL;
+ fields[1].in_check_value = NULL;
+ fields[1].in_check_mask = NULL;
+
+ jtag_add_dr_scan(2, fields, TAP_INVALID);
+
+ return ERROR_OK;
+}
+
+/* Scan out and in from host ordered u32 variables */
+int adi_jtag_dp_scan_u32(arm_jtag_t *jtag_info, u8 instr, u8 reg_addr, u8 RnW, u32 outvalue, u32 *invalue, u8 *ack)
+{
+ scan_field_t fields[2];
+ u8 out_value_buf[4];
+ u8 out_addr_buf;
+
+ jtag_add_end_state(TAP_IDLE);
+ arm_jtag_set_instr(jtag_info, instr, NULL);
+
+ 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].out_mask = NULL;
+ fields[0].in_value = ack;
+ fields[0].in_check_value = NULL;
+ fields[0].in_check_mask = NULL;
+ fields[0].in_handler = NULL;
+ fields[0].in_handler_priv = NULL;
+
+ 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;
+ fields[1].out_mask = NULL;
+ fields[1].in_value = NULL;
+ if (invalue)
+ {
+ fields[1].in_handler = arm_jtag_buf_to_u32;
+ fields[1].in_handler_priv = invalue;
+ }
+ else
+ {
+ fields[1].in_handler = NULL;
+ fields[1].in_handler_priv = NULL;
+ }
+ fields[1].in_check_value = NULL;
+ fields[1].in_check_mask = NULL;
+
+ jtag_add_dr_scan(2, fields, TAP_INVALID);
+
+ return ERROR_OK;
+}
+
+/* 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)
+{
+ adi_jtag_dp_scan(swjdp->jtag_info, instr, reg_addr, RnW, outvalue, NULL, NULL);
+ if ((RnW == DPAP_READ) && (invalue != NULL))
+ {
+ adi_jtag_dp_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))
+ {
+ return swjdp_transaction_endcheck(swjdp);
+ }
+
+ return ERROR_OK;
+}
+
+int scan_inout_check_u32(swjdp_common_t *swjdp, u8 instr, u8 reg_addr, u8 RnW, u32 outvalue, u32 *invalue)
+{
+ adi_jtag_dp_scan_u32(swjdp->jtag_info, instr, reg_addr, RnW, outvalue, NULL, NULL);
+ if ((RnW==DPAP_READ) && (invalue != NULL))
+ {
+ adi_jtag_dp_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))
+ {
+ return swjdp_transaction_endcheck(swjdp);
+ }
+
+ return ERROR_OK;
+}
+
+int swjdp_transaction_endcheck(swjdp_common_t *swjdp)
+{
+ int retval;
+ u32 ctrlstat;
+
+ /* too expensive to call keep_alive() here */
+
+#if 0
+ /* 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??? */
+#endif
+
+ 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;
+
+ if (swjdp->ack != 2)
+ {
+ long long then=timeval_ms();
+ while (swjdp->ack != 2)
+ {
+ if (swjdp->ack == 1)
+ {
+ if ((timeval_ms()-then) > 1000)
+ {
+ LOG_WARNING("Timeout (1000ms) waiting for ACK = OK/FAULT in SWJDP transaction");
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+ }
+ else
+ {
+ LOG_WARNING("Invalid ACK in SWJDP transaction");
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+
+ 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;
+ }
+ } else
+ {
+ /* common code path avoids fn to timeval_ms() */
+ }
+
+ /* Check for STICKYERR and STICKYORUN */
+ if (ctrlstat & (SSTICKYORUN | SSTICKYERR))
+ {
+ LOG_DEBUG("swjdp: CTRL/STAT error 0x%x", ctrlstat);
+ /* Check power to debug regions */
+ if ((ctrlstat & 0xf0000000) != 0xf0000000)
+ {
+ ahbap_debugport_init(swjdp);
+ }
+ else
+ {
+ u32 mem_ap_csw;
+
+ /* Print information about last AHBAP access */
+ LOG_ERROR("AHBAP Cached values: dp_select 0x%x, ap_csw 0x%x, ap_tar 0x%x", swjdp->dp_select_value, swjdp->ap_csw_value, swjdp->ap_tar_value);
+ 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);
+ if ((retval=jtag_execute_queue())!=ERROR_OK)
+ return retval;
+
+ LOG_DEBUG("swjdp: status 0x%x", ctrlstat);
+
+ dap_ap_read_reg_u32(swjdp, AP_REG_CSW, &mem_ap_csw);
+ if ((retval=jtag_execute_queue())!=ERROR_OK)
+ return retval;
+ LOG_ERROR("Read MEM_AP_CSW 0x%x", mem_ap_csw);
+
+ }
+ if ((retval=jtag_execute_queue())!=ERROR_OK)
+ return retval;
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+
+ return ERROR_OK;
+}
+
+/***************************************************************************
+ * *
+ * DP and MEM-AP register access through APACC and DPACC *
+ * *
+***************************************************************************/
+
+int dap_dp_write_reg(swjdp_common_t *swjdp, u32 value, u8 reg_addr)
+{
+ return scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, reg_addr, DPAP_WRITE, value, NULL);
+}
+
+int dap_dp_read_reg(swjdp_common_t *swjdp, u32 *value, u8 reg_addr)
+{
+ return scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, reg_addr, DPAP_READ, 0, value);
+}
+
+int dap_ap_select(swjdp_common_t *swjdp,u8 apsel)
+{
+ u32 select;
+ select = (apsel<<24) & 0xFF000000;
+
+ if (select != swjdp->apsel)
+ {
+ swjdp->apsel = select;
+ /* Switchin AP invalidates cached values */
+ swjdp->dp_select_value = -1;
+ swjdp->ap_csw_value = -1;
+ swjdp->ap_tar_value = -1;
+ }
+
+ return ERROR_OK;
+}
+
+int dap_dp_bankselect(swjdp_common_t *swjdp,u32 ap_reg)
+{
+ u32 select;
+ select = (ap_reg & 0x000000F0);
+
+ if (select != swjdp->dp_select_value)
+ {
+ dap_dp_write_reg(swjdp, select | swjdp->apsel, DP_SELECT);
+ swjdp->dp_select_value = select;
+ }
+
+ return ERROR_OK;
+}
+
+int dap_ap_write_reg(swjdp_common_t *swjdp, u32 reg_addr, u8* out_value_buf)
+{
+ dap_dp_bankselect(swjdp, reg_addr);
+ scan_inout_check(swjdp, SWJDP_IR_APACC, reg_addr, DPAP_WRITE, out_value_buf, NULL);
+
+ return ERROR_OK;
+}
+
+int dap_ap_read_reg(swjdp_common_t *swjdp, u32 reg_addr, u8 *in_value_buf)
+{
+ dap_dp_bankselect(swjdp, reg_addr);
+ scan_inout_check(swjdp, SWJDP_IR_APACC, reg_addr, DPAP_READ, 0, in_value_buf);
+
+ return ERROR_OK;
+}
+int dap_ap_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);
+ dap_dp_bankselect(swjdp, reg_addr);
+ scan_inout_check(swjdp, SWJDP_IR_APACC, reg_addr, DPAP_WRITE, out_value_buf, NULL);
+
+ return ERROR_OK;
+}
+
+int dap_ap_read_reg_u32(swjdp_common_t *swjdp, u32 reg_addr, u32 *value)
+{
+ dap_dp_bankselect(swjdp, reg_addr);
+ scan_inout_check_u32(swjdp, SWJDP_IR_APACC, reg_addr, DPAP_READ, 0, value);
+
+ return ERROR_OK;
+}
+
+/***************************************************************************
+ * *
+ * AHB-AP access to memory and system registers on AHB bus *
+ * *
+***************************************************************************/
+
+int dap_setup_accessport(swjdp_common_t *swjdp, u32 csw, u32 tar)
+{
+ csw = csw | CSW_DBGSWENABLE | CSW_MASTER_DEBUG | CSW_HPROT;
+ if (csw != swjdp->ap_csw_value)
+ {
+ /* LOG_DEBUG("swjdp : Set CSW %x",csw); */
+ dap_ap_write_reg_u32(swjdp, AP_REG_CSW, csw );
+ swjdp->ap_csw_value = csw;
+ }
+ if (tar != swjdp->ap_tar_value)
+ {
+ /* LOG_DEBUG("swjdp : Set TAR %x",tar); */
+ dap_ap_write_reg_u32(swjdp, AP_REG_TAR, tar );
+ swjdp->ap_tar_value = tar;
+ }
+ if (csw & CSW_ADDRINC_MASK)
+ {
+ /* Do not cache TAR value when autoincrementing */
+ swjdp->ap_tar_value = -1;
+ }
+ return ERROR_OK;
+}
+
+/*****************************************************************************
+* *
+* mem_ap_read_u32(swjdp_common_t *swjdp, u32 address, u32 *value) *
+* *
+* Read a u32 value from memory or system register *
+* Functionally equivalent to target_read_u32(target, address, u32 *value), *
+* but with less overhead *
+*****************************************************************************/
+int mem_ap_read_u32(swjdp_common_t *swjdp, u32 address, u32 *value)
+{
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, address & 0xFFFFFFF0);
+ dap_ap_read_reg_u32(swjdp, AP_REG_BD0 | (address & 0xC), value );
+
+ return ERROR_OK;
+}
+
+int mem_ap_read_atomic_u32(swjdp_common_t *swjdp, u32 address, u32 *value)
+{
+ mem_ap_read_u32(swjdp, address, value);
+
+ return swjdp_transaction_endcheck(swjdp);
+}
+
+/*****************************************************************************
+* *
+* mem_ap_write_u32(swjdp_common_t *swjdp, u32 address, u32 value) *
+* *
+* Write a u32 value to memory or memory mapped register *
+* *
+*****************************************************************************/
+int mem_ap_write_u32(swjdp_common_t *swjdp, u32 address, u32 value)
+{
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, address & 0xFFFFFFF0);
+ dap_ap_write_reg_u32(swjdp, AP_REG_BD0 | (address & 0xC), value );
+
+ return ERROR_OK;
+}
+
+int mem_ap_write_atomic_u32(swjdp_common_t *swjdp, u32 address, u32 value)
+{
+ mem_ap_write_u32(swjdp, address, value);
+
+ return swjdp_transaction_endcheck(swjdp);
+}
+
+/*****************************************************************************
+* *
+* mem_ap_write_buf(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address) *
+* *
+* Write a buffer in target order (little endian) *
+* *
+*****************************************************************************/
+int mem_ap_write_buf_u32(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ u32 outvalue;
+ 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)
+ {
+ for (writecount = 0; writecount < count; writecount++)
+ {
+ int i;
+ outvalue = *((u32*)pBuffer);
+
+ for (i = 0; i < 4; i++ )
+ {
+ *((u8*)pBuffer + (adr & 0x3)) = outvalue;
+ outvalue >>= 8;
+ adr++;
+ }
+ 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;
+
+ dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address);
+
+ for (writecount = 0; writecount < blocksize; writecount++)
+ {
+ dap_ap_write_reg(swjdp, AP_REG_DRW, buffer + 4 * writecount );
+ }
+
+ if (swjdp_transaction_endcheck(swjdp) == ERROR_OK)
+ {
+ wcount = wcount - blocksize;
+ address = address + 4 * blocksize;
+ buffer = buffer + 4 * blocksize;
+ }
+ else
+ {
+ errorcount++;
+ }
+
+ if (errorcount > 1)
+ {
+ LOG_WARNING("Block write error address 0x%x, wcount 0x%x", address, wcount);
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+ }
+
+ return retval;
+}
+
+int mem_ap_write_buf_packed_u16(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ 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;
+
+ dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_PACKED, address);
+ writecount = blocksize;
+
+ do
+ {
+ nbytes = MIN((writecount << 1), 4);
+
+ if (nbytes < 4 )
+ {
+ if (mem_ap_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);
+ dap_ap_write_reg_u32(swjdp, AP_REG_DRW, outvalue);
+ if (swjdp_transaction_endcheck(swjdp) != ERROR_OK)
+ {
+ LOG_WARNING("Block read error address 0x%x, count 0x%x", address, count);
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+ }
+
+ buffer += nbytes >> 1;
+ writecount -= nbytes >> 1;
+
+ } while (writecount);
+ wcount -= blocksize;
+ }
+
+ return retval;
+}
+
+int mem_ap_write_buf_u16(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ u32 outvalue;
+ int retval = ERROR_OK;
+
+ if (count >= 4)
+ return mem_ap_write_buf_packed_u16(swjdp, buffer, count, address);
+
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ while (count > 0)
+ {
+ dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_SINGLE, address);
+ outvalue = *((u16*)buffer) << 8 * (address & 0x3);
+ dap_ap_write_reg_u32(swjdp, AP_REG_DRW, outvalue );
+ retval = swjdp_transaction_endcheck(swjdp);
+ count -= 2;
+ address += 2;
+ buffer += 2;
+ }
+
+ return retval;
+}
+
+int mem_ap_write_buf_packed_u8(swjdp_common_t *swjdp, u8 *buffer, int count, u32 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;
+
+ dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_PACKED, address);
+ writecount = blocksize;
+
+ do
+ {
+ nbytes = MIN(writecount, 4);
+
+ if (nbytes < 4 )
+ {
+ if (mem_ap_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);
+ dap_ap_write_reg_u32(swjdp, AP_REG_DRW, outvalue);
+ if (swjdp_transaction_endcheck(swjdp) != ERROR_OK)
+ {
+ LOG_WARNING("Block read error address 0x%x, count 0x%x", address, count);
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+ }
+
+ buffer += nbytes;
+ writecount -= nbytes;
+
+ } while (writecount);
+ wcount -= blocksize;
+ }
+
+ return retval;
+}
+
+int mem_ap_write_buf_u8(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ u32 outvalue;
+ int retval = ERROR_OK;
+
+ if (count >= 4)
+ return mem_ap_write_buf_packed_u8(swjdp, buffer, count, address);
+
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ while (count > 0)
+ {
+ dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
+ outvalue = *((u8*)buffer) << 8 * (address & 0x3);
+ dap_ap_write_reg_u32(swjdp, AP_REG_DRW, outvalue );
+ retval = swjdp_transaction_endcheck(swjdp);
+ count--;
+ address++;
+ buffer++;
+ }
+
+ return retval;
+}
+
+/*********************************************************************************
+* *
+* mem_ap_read_buf_u32(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address) *
+* *
+* Read block fast in target order (little endian) into a buffer *
+* *
+**********************************************************************************/
+int mem_ap_read_buf_u32(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ 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;
+
+ dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address);
+
+ /* Scan out first read */
+ adi_jtag_dp_scan(swjdp->jtag_info, SWJDP_IR_APACC, AP_REG_DRW, DPAP_READ, 0, NULL, NULL);
+ for (readcount = 0; readcount < blocksize - 1; readcount++)
+ {
+ /* Scan out read instruction and scan in previous value */
+ adi_jtag_dp_scan(swjdp->jtag_info, SWJDP_IR_APACC, AP_REG_DRW, DPAP_READ, 0, buffer + 4 * readcount, &swjdp->ack);
+ }
+
+ /* Scan in last value */
+ adi_jtag_dp_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;
+ }
+ 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)
+ {
+ for (readcount = 0; readcount < count; readcount++)
+ {
+ int i;
+ u32 data = *((u32*)pBuffer);
+
+ for (i = 0; i < 4; i++ )
+ {
+ *((u8*)pBuffer) = (data >> 8 * (adr & 0x3));
+ pBuffer++;
+ adr++;
+ }
+ }
+ }
+
+ return retval;
+}
+
+int mem_ap_read_buf_packed_u16(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ 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;
+
+ dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_PACKED, address);
+
+ /* handle unaligned data at 4k boundary */
+ if (blocksize == 0)
+ blocksize = 1;
+ readcount = blocksize;
+
+ do
+ {
+ dap_ap_read_reg_u32(swjdp, AP_REG_DRW, &invalue );
+ if (swjdp_transaction_endcheck(swjdp) != ERROR_OK)
+ {
+ 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;
+}
+
+int mem_ap_read_buf_u16(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ u32 invalue, i;
+ int retval = ERROR_OK;
+
+ if (count >= 4)
+ return mem_ap_read_buf_packed_u16(swjdp, buffer, count, address);
+
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ while (count > 0)
+ {
+ dap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_SINGLE, address);
+ dap_ap_read_reg_u32(swjdp, AP_REG_DRW, &invalue );
+ retval = swjdp_transaction_endcheck(swjdp);
+ if (address & 0x1)
+ {
+ for (i = 0; i < 2; i++ )
+ {
+ *((u8*)buffer) = (invalue >> 8 * (address & 0x3));
+ buffer++;
+ address++;
+ }
+ }
+ else
+ {
+ *((u16*)buffer) = (invalue >> 8 * (address & 0x3));
+ address += 2;
+ buffer += 2;
+ }
+ count -= 2;
+ }
+
+ return retval;
+}
+
+int mem_ap_read_buf_packed_u8(swjdp_common_t *swjdp, u8 *buffer, int count, u32 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;
+
+ dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_PACKED, address);
+ readcount = blocksize;
+
+ do
+ {
+ dap_ap_read_reg_u32(swjdp, AP_REG_DRW, &invalue );
+ if (swjdp_transaction_endcheck(swjdp) != ERROR_OK)
+ {
+ 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;
+}
+
+int mem_ap_read_buf_u8(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ u32 invalue;
+ int retval = ERROR_OK;
+
+ if (count >= 4)
+ return mem_ap_read_buf_packed_u8(swjdp, buffer, count, address);
+
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ while (count > 0)
+ {
+ dap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
+ dap_ap_read_reg_u32(swjdp, AP_REG_DRW, &invalue );
+ retval = swjdp_transaction_endcheck(swjdp);
+ *((u8*)buffer) = (invalue >> 8 * (address & 0x3));
+ count--;
+ address++;
+ buffer++;
+ }
+
+ return retval;
+}
+
+int ahbap_debugport_init(swjdp_common_t *swjdp)
+{
+ u32 idreg, romaddr, dummy;
+ u32 ctrlstat;
+ int cnt = 0;
+ int retval;
+
+ LOG_DEBUG(" ");
+
+ swjdp->apsel = 0;
+ swjdp->ap_csw_value = -1;
+ swjdp->ap_tar_value = -1;
+ swjdp->trans_mode = TRANS_MODE_ATOMIC;
+ dap_dp_read_reg(swjdp, &dummy, DP_CTRL_STAT);
+ dap_dp_write_reg(swjdp, SSTICKYERR, DP_CTRL_STAT);
+ dap_dp_read_reg(swjdp, &dummy, DP_CTRL_STAT);
+
+ swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ;
+
+ dap_dp_write_reg(swjdp, swjdp->dp_ctrl_stat, DP_CTRL_STAT);
+ dap_dp_read_reg(swjdp, &ctrlstat, DP_CTRL_STAT);
+ if ((retval=jtag_execute_queue())!=ERROR_OK)
+ return retval;
+
+ /* Check that we have debug power domains activated */
+ while (!(ctrlstat & CDBGPWRUPACK) && (cnt++ < 10))
+ {
+ LOG_DEBUG("swjdp: wait CDBGPWRUPACK");
+ dap_dp_read_reg(swjdp, &ctrlstat, DP_CTRL_STAT);
+ if ((retval=jtag_execute_queue())!=ERROR_OK)
+ return retval;
+ alive_sleep(10);
+ }
+
+ while (!(ctrlstat & CSYSPWRUPACK) && (cnt++ < 10))
+ {
+ LOG_DEBUG("swjdp: wait CSYSPWRUPACK");
+ dap_dp_read_reg(swjdp, &ctrlstat, DP_CTRL_STAT);
+ if ((retval=jtag_execute_queue())!=ERROR_OK)
+ return retval;
+ alive_sleep(10);
+ }
+
+ dap_dp_read_reg(swjdp, &dummy, DP_CTRL_STAT);
+ /* With debug power on we can activate OVERRUN checking */
+ swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ | CORUNDETECT;
+ dap_dp_write_reg(swjdp, swjdp->dp_ctrl_stat, DP_CTRL_STAT);
+ dap_dp_read_reg(swjdp, &dummy, DP_CTRL_STAT);
+
+ dap_ap_read_reg_u32(swjdp, 0xFC, &idreg);
+ dap_ap_read_reg_u32(swjdp, 0xF8, &romaddr);
+
+ LOG_DEBUG("AHB-AP ID Register 0x%x, Debug ROM Address 0x%x", idreg, romaddr);
+
+ return ERROR_OK;
+}
+
+
+char * class_description[16] ={
+ "Reserved",
+ "ROM table","Reserved","Reserved","Reserved","Reserved","Reserved","Reserved","Reserved",
+ "CoreSight component","Reserved","Peripheral Test Block","Reserved","DESS","Generic IP component","Non standard layout"};
+
+int dap_info_command(struct command_context_s *cmd_ctx, swjdp_common_t *swjdp, int apsel)
+{
+
+ u32 dbgbase,apid;
+ int romtable_present = 0;
+ u8 mem_ap;
+ u32 apselold;
+
+ apselold = swjdp->apsel;
+ dap_ap_select(swjdp, apsel);
+ dap_ap_read_reg_u32(swjdp, 0xF8, &dbgbase);
+ dap_ap_read_reg_u32(swjdp, 0xFC, &apid);
+ swjdp_transaction_endcheck(swjdp);
+ /* Now we read ROM table ID registers, ref. ARM IHI 0029B sec */
+ mem_ap = ((apid&0x10000)&&((apid&0x0F)!=0));
+ command_print(cmd_ctx, "ap identification register 0x%8.8x", apid);
+ if (apid)
+ {
+ switch (apid&0x0F)
+ {
+ case 0:
+ command_print(cmd_ctx, "\tType is jtag-ap");
+ break;
+ case 1:
+ command_print(cmd_ctx, "\tType is mem-ap AHB");
+ break;
+ case 2:
+ command_print(cmd_ctx, "\tType is mem-ap APB");
+ break;
+ default:
+ command_print(cmd_ctx, "\tUnknown AP-type");
+ break;
+ }
+ command_print(cmd_ctx, "ap debugbase 0x%8.8x", dbgbase);
+ }
+ else
+ {
+ command_print(cmd_ctx, "No AP found at this apsel 0x%x", apsel);
+ }
+
+ romtable_present = ((mem_ap)&&(dbgbase != 0xFFFFFFFF));
+ if (romtable_present)
+ {
+ u32 cid0,cid1,cid2,cid3,memtype,romentry;
+ u16 entry_offset;
+ /* bit 16 of apid indicates a memory access port */
+ if (dbgbase&0x02)
+ {
+ command_print(cmd_ctx, "\tValid ROM table present");
+ }
+ else
+ {
+ command_print(cmd_ctx, "\tROM table in legacy format" );
+ }
+ /* Now we read ROM table ID registers, ref. ARM IHI 0029B sec */
+ mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000)|0xFF0, &cid0);
+ mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000)|0xFF4, &cid1);
+ mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000)|0xFF8, &cid2);
+ mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000)|0xFFC, &cid3);
+ mem_ap_read_u32(swjdp, (dbgbase&0xFFFFF000)|0xFCC, &memtype);
+ swjdp_transaction_endcheck(swjdp);
+ command_print(cmd_ctx, "\tCID3 0x%x, CID2 0x%x, CID1 0x%x, CID0, 0x%x",cid3,cid2,cid1,cid0);
+ if (memtype&0x01)
+ {
+ command_print(cmd_ctx, "\tMEMTYPE system memory present on bus");
+ }
+ else
+ {
+ command_print(cmd_ctx, "\tMEMTYPE system memory not present. Dedicated debug bus" );
+ }
+
+ /* Now we read ROM table entries from dbgbase&0xFFFFF000)|0x000 until we get 0x00000000 */
+ entry_offset = 0;
+ do
+ {
+ mem_ap_read_atomic_u32(swjdp, (dbgbase&0xFFFFF000)|entry_offset, &romentry);
+ command_print(cmd_ctx, "\tROMTABLE[0x%x] = 0x%x",entry_offset,romentry);
+ if (romentry&0x01)
+ {
+ u32 c_cid0,c_cid1,c_cid2,c_cid3,c_pid0,c_pid1,c_pid2,c_pid3,c_pid4,component_start;
+ u32 component_base = (u32)((dbgbase&0xFFFFF000)+(int)(romentry&0xFFFFF000));
+ mem_ap_read_atomic_u32(swjdp, (component_base&0xFFFFF000)|0xFE0, &c_pid0);
+ mem_ap_read_atomic_u32(swjdp, (component_base&0xFFFFF000)|0xFE4, &c_pid1);
+ mem_ap_read_atomic_u32(swjdp, (component_base&0xFFFFF000)|0xFE8, &c_pid2);
+ mem_ap_read_atomic_u32(swjdp, (component_base&0xFFFFF000)|0xFEC, &c_pid3);
+ mem_ap_read_atomic_u32(swjdp, (component_base&0xFFFFF000)|0xFD0, &c_pid4);
+ mem_ap_read_atomic_u32(swjdp, (component_base&0xFFFFF000)|0xFF0, &c_cid0);
+ mem_ap_read_atomic_u32(swjdp, (component_base&0xFFFFF000)|0xFF4, &c_cid1);
+ mem_ap_read_atomic_u32(swjdp, (component_base&0xFFFFF000)|0xFF8, &c_cid2);
+ mem_ap_read_atomic_u32(swjdp, (component_base&0xFFFFF000)|0xFFC, &c_cid3);
+ component_start = component_base - 0x1000*(c_pid4>>4);
+ command_print(cmd_ctx, "\t\tComponent base address 0x%x, pid4 0x%x, start address 0x%x",component_base,c_pid4,component_start);
+ command_print(cmd_ctx, "\t\tComponent cid1 0x%x, class is %s",c_cid1,class_description[(c_cid1>>4)&0xF]); /* Se ARM DDI 0314 C Table 2.2 */
+ command_print(cmd_ctx, "\t\tCID3 0x%x, CID2 0x%x, CID1 0x%x, CID0, 0x%x",c_cid3,c_cid2,c_cid1,c_cid0);
+ command_print(cmd_ctx, "\t\tPID3 0x%x, PID2 0x%x, PID1 0x%x, PID0, 0x%x",c_pid3,c_pid2,c_pid1,c_pid0);
+ /* For CoreSight components, (c_cid1>>4)&0xF==9 , we also read 0xFC8 DevId and 0xFCC DevType */
+ }
+ else
+ {
+ if (romentry)
+ command_print(cmd_ctx, "\t\tComponent not present");
+ else
+ command_print(cmd_ctx, "\t\tEnd of ROM table");
+ }
+ entry_offset += 4;
+ } while (romentry>0);
+ }
+ else
+ {
+ command_print(cmd_ctx, "\tNo ROM table present");
+ }
+ dap_ap_select(swjdp, apselold);
+
+ return ERROR_OK;
+}
+
projects / openocd / commitdiff