+// SPDX-License-Identifier: GPL-2.0-or-later
+
/***************************************************************************
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* Copyright (C) 2008 by David T.L. Wong *
* *
* Copyright (C) 2009 by David N. Claffey <dnclaffey@gmail.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, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "mips32.h"
#include "mips_ejtag.h"
#include "mips32_dmaacc.h"
+#include "mips64.h"
+#include "mips64_pracc.h"
void mips_ejtag_set_instr(struct mips_ejtag *ejtag_info, uint32_t new_instr)
{
- assert(ejtag_info->tap != NULL);
+ assert(ejtag_info->tap);
struct jtag_tap *tap = ejtag_info->tap;
if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr) {
struct scan_field field;
field.num_bits = tap->ir_length;
- uint8_t t[4];
+ uint8_t t[4] = { 0 };
field.out_value = t;
buf_set_u32(t, 0, field.num_bits, new_instr);
}
}
-int mips_ejtag_get_idcode(struct mips_ejtag *ejtag_info, uint32_t *idcode)
+int mips_ejtag_get_idcode(struct mips_ejtag *ejtag_info)
{
- struct scan_field field;
- uint8_t r[4];
-
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_IDCODE);
- field.num_bits = 32;
- field.out_value = NULL;
- field.in_value = r;
-
- jtag_add_dr_scan(ejtag_info->tap, 1, &field, TAP_IDLE);
-
- int retval;
- retval = jtag_execute_queue();
- if (retval != ERROR_OK) {
- LOG_ERROR("register read failed");
- return retval;
- }
-
- *idcode = buf_get_u32(field.in_value, 0, 32);
-
- return ERROR_OK;
+ ejtag_info->idcode = 0;
+ return mips_ejtag_drscan_32(ejtag_info, &ejtag_info->idcode);
}
-static int mips_ejtag_get_impcode(struct mips_ejtag *ejtag_info, uint32_t *impcode)
+static int mips_ejtag_get_impcode(struct mips_ejtag *ejtag_info)
{
- struct scan_field field;
- uint8_t r[4];
-
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_IMPCODE);
- field.num_bits = 32;
- field.out_value = NULL;
- field.in_value = r;
-
- jtag_add_dr_scan(ejtag_info->tap, 1, &field, TAP_IDLE);
-
- int retval;
- retval = jtag_execute_queue();
- if (retval != ERROR_OK) {
- LOG_ERROR("register read failed");
- return retval;
- }
-
- *impcode = buf_get_u32(field.in_value, 0, 32);
-
- return ERROR_OK;
+ ejtag_info->impcode = 0;
+ return mips_ejtag_drscan_32(ejtag_info, &ejtag_info->impcode);
}
void mips_ejtag_add_scan_96(struct mips_ejtag *ejtag_info, uint32_t ctrl, uint32_t data, uint8_t *in_scan_buf)
{
- assert(ejtag_info->tap != NULL);
+ assert(ejtag_info->tap);
struct jtag_tap *tap = ejtag_info->tap;
struct scan_field field;
keep_alive();
}
-void mips_ejtag_drscan_32_queued(struct mips_ejtag *ejtag_info, uint32_t data_out, uint8_t *data_in)
+int mips_ejtag_drscan_64(struct mips_ejtag *ejtag_info, uint64_t *data)
+{
+ struct jtag_tap *tap;
+ tap = ejtag_info->tap;
+
+ if (!tap)
+ return ERROR_FAIL;
+ struct scan_field field;
+ uint8_t t[8] = { 0 }, r[8];
+ int retval;
+
+ field.num_bits = 64;
+ field.out_value = t;
+ buf_set_u64(t, 0, field.num_bits, *data);
+ field.in_value = r;
+
+ jtag_add_dr_scan(tap, 1, &field, TAP_IDLE);
+ retval = jtag_execute_queue();
+ if (retval != ERROR_OK) {
+ LOG_ERROR("register read failed");
+ return retval;
+ }
+
+ *data = buf_get_u64(field.in_value, 0, 64);
+
+ keep_alive();
+
+ return ERROR_OK;
+}
+
+static void mips_ejtag_drscan_32_queued(struct mips_ejtag *ejtag_info,
+ uint32_t data_out, uint8_t *data_in)
{
- assert(ejtag_info->tap != NULL);
+ assert(ejtag_info->tap);
struct jtag_tap *tap = ejtag_info->tap;
struct scan_field field;
field.num_bits = 32;
- uint8_t scan_out[4];
+ uint8_t scan_out[4] = { 0 };
field.out_value = scan_out;
buf_set_u32(scan_out, 0, field.num_bits, data_out);
int mips_ejtag_drscan_8(struct mips_ejtag *ejtag_info, uint8_t *data)
{
- assert(ejtag_info->tap != NULL);
+ assert(ejtag_info->tap);
struct jtag_tap *tap = ejtag_info->tap;
struct scan_field field;
void mips_ejtag_drscan_8_out(struct mips_ejtag *ejtag_info, uint8_t data)
{
- assert(ejtag_info->tap != NULL);
+ assert(ejtag_info->tap);
struct jtag_tap *tap = ejtag_info->tap;
struct scan_field field;
int mips_ejtag_exit_debug(struct mips_ejtag *ejtag_info)
{
- pa_list pracc_list = {.instr = MIPS32_DRET(ejtag_info->isa), .addr = 0};
+ struct pa_list pracc_list = {.instr = MIPS32_DRET(ejtag_info->isa), .addr = 0};
struct pracc_queue_info ctx = {.max_code = 1, .pracc_list = &pracc_list, .code_count = 1, .store_count = 0};
/* execute our dret instruction */
return ctx.retval;
}
-/* mips_ejtag_init_mmr - asign Memory-Mapped Registers depending
+/* mips_ejtag_init_mmr - assign Memory-Mapped Registers depending
* on EJTAG version.
*/
static void mips_ejtag_init_mmr(struct mips_ejtag *ejtag_info)
ejtag_info->ejtag_dbm_offs = EJTAG_V20_DBM_OFFS;
ejtag_info->ejtag_dbv_offs = EJTAG_V20_DBV_OFFS;
- ejtag_info->ejtag_iba_step_size = EJTAG_V20_IBAn_STEP;
- ejtag_info->ejtag_dba_step_size = EJTAG_V20_DBAn_STEP;
+ ejtag_info->ejtag_iba_step_size = EJTAG_V20_IBAN_STEP;
+ ejtag_info->ejtag_dba_step_size = EJTAG_V20_DBAN_STEP;
} else {
ejtag_info->ejtag_ibs_addr = EJTAG_V25_IBS;
ejtag_info->ejtag_iba0_addr = EJTAG_V25_IBA0;
ejtag_info->ejtag_dbc_offs = EJTAG_V25_DBC_OFFS;
ejtag_info->ejtag_dbv_offs = EJTAG_V25_DBV_OFFS;
- ejtag_info->ejtag_iba_step_size = EJTAG_V25_IBAn_STEP;
- ejtag_info->ejtag_dba_step_size = EJTAG_V25_DBAn_STEP;
+ ejtag_info->ejtag_iba_step_size = EJTAG_V25_IBAN_STEP;
+ ejtag_info->ejtag_dba_step_size = EJTAG_V25_DBAN_STEP;
}
}
EJTAG_IMP_HAS(EJTAG_IMP_ASID6) ? " ASID_6" : "",
EJTAG_IMP_HAS(EJTAG_IMP_MIPS16) ? " MIPS16" : "",
EJTAG_IMP_HAS(EJTAG_IMP_NODMA) ? " noDMA" : " DMA",
- EJTAG_IMP_HAS(EJTAG_DCR_MIPS64) ? " MIPS64" : " MIPS32");
+ EJTAG_IMP_HAS(EJTAG_IMP_MIPS64) ? " MIPS64" : " MIPS32");
switch (ejtag_info->ejtag_version) {
case EJTAG_VERSION_20:
int mips_ejtag_init(struct mips_ejtag *ejtag_info)
{
- int retval;
-
- retval = mips_ejtag_get_impcode(ejtag_info, &ejtag_info->impcode);
- if (retval != ERROR_OK)
+ int retval = mips_ejtag_get_impcode(ejtag_info);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("impcode read failed");
return retval;
- LOG_DEBUG("impcode: 0x%8.8" PRIx32 "", ejtag_info->impcode);
+ }
/* get ejtag version */
ejtag_info->ejtag_version = ((ejtag_info->impcode >> 29) & 0x07);
int mips_ejtag_fastdata_scan(struct mips_ejtag *ejtag_info, int write_t, uint32_t *data)
{
- assert(ejtag_info->tap != NULL);
+ assert(ejtag_info->tap);
struct jtag_tap *tap = ejtag_info->tap;
struct scan_field fields[2];
return ERROR_OK;
}
+
+int mips64_ejtag_config_step(struct mips_ejtag *ejtag_info, bool enable_step)
+{
+ const uint32_t code_enable[] = {
+ MIPS64_MTC0(1, 31, 0), /* move $1 to COP0 DeSave */
+ MIPS64_MFC0(1, 23, 0), /* move COP0 Debug to $1 */
+ MIPS64_ORI(1, 1, 0x0100), /* set SSt bit in debug reg */
+ MIPS64_MTC0(1, 23, 0), /* move $1 to COP0 Debug */
+ MIPS64_B(NEG16(5)),
+ MIPS64_MFC0(1, 31, 0), /* move COP0 DeSave to $1 */
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ };
+
+ const uint32_t code_disable[] = {
+ MIPS64_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
+ MIPS64_LUI(15, UPPER16(MIPS64_PRACC_STACK)), /* $15 = MIPS64_PRACC_STACK */
+ MIPS64_ORI(15, 15, LOWER16(MIPS64_PRACC_STACK)),
+ MIPS64_SD(1, 0, 15), /* sw $1,($15) */
+ MIPS64_SD(2, 0, 15), /* sw $2,($15) */
+ MIPS64_MFC0(1, 23, 0), /* move COP0 Debug to $1 */
+ MIPS64_LUI(2, 0xFFFF), /* $2 = 0xfffffeff */
+ MIPS64_ORI(2, 2, 0xFEFF),
+ MIPS64_AND(1, 1, 2),
+ MIPS64_MTC0(1, 23, 0), /* move $1 to COP0 Debug */
+ MIPS64_LD(2, 0, 15),
+ MIPS64_LD(1, 0, 15),
+ MIPS64_SYNC,
+ MIPS64_B(NEG16(14)),
+ MIPS64_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ };
+ const uint32_t *code = enable_step ? code_enable : code_disable;
+ unsigned code_len = enable_step ? ARRAY_SIZE(code_enable) :
+ ARRAY_SIZE(code_disable);
+
+ return mips64_pracc_exec(ejtag_info,
+ code_len, code, 0, NULL, 0, NULL);
+}
+
+int mips64_ejtag_exit_debug(struct mips_ejtag *ejtag_info)
+{
+ const uint32_t code[] = {
+ MIPS64_DRET,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ MIPS64_NOP,
+ };
+ LOG_DEBUG("enter mips64_pracc_exec");
+ return mips64_pracc_exec(ejtag_info,
+ ARRAY_SIZE(code), code, 0, NULL, 0, NULL);
+}
+
+int mips64_ejtag_fastdata_scan(struct mips_ejtag *ejtag_info, bool write_t, uint64_t *data)
+{
+ struct jtag_tap *tap;
+
+ tap = ejtag_info->tap;
+ assert(tap);
+
+ struct scan_field fields[2];
+ uint8_t spracc = 0;
+ uint8_t t[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+
+ /* fastdata 1-bit register */
+ fields[0].num_bits = 1;
+ fields[0].out_value = &spracc;
+ fields[0].in_value = NULL;
+
+ /* processor access data register 64 bit */
+ fields[1].num_bits = 64;
+ fields[1].out_value = t;
+
+ if (write_t) {
+ fields[1].in_value = NULL;
+ buf_set_u64(t, 0, 64, *data);
+ } else
+ fields[1].in_value = (uint8_t *) data;
+
+ jtag_add_dr_scan(tap, 2, fields, TAP_IDLE);
+
+ if (!write_t && data)
+ jtag_add_callback(mips_le_to_h_u64,
+ (jtag_callback_data_t) data);
+ keep_alive();
+
+ return ERROR_OK;
+}
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