+/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath *
+ * Dominic.Rath@gmx.de *
+ * *
+ * 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. *
+ ***************************************************************************/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "etb.h"
+
+#include "log.h"
+#include "types.h"
+#include "binarybuffer.h"
+#include "target.h"
+#include "register.h"
+#include "jtag.h"
+
+#include <stdlib.h>
+
+char* etb_reg_list[] =
+{
+ "ETB_identification",
+ "ETB_ram_depth",
+ "ETB_ram_width",
+ "ETB_status",
+ "ETB_ram_data",
+ "ETB_ram_read_pointer",
+ "ETB_ram_write_pointer",
+ "ETB_trigger_counter",
+ "ETB_control",
+};
+
+int etb_reg_arch_type = -1;
+
+int etb_get_reg(reg_t *reg);
+int etb_set_reg(reg_t *reg, u32 value);
+int etb_set_reg_w_exec(reg_t *reg, u8 *buf);
+
+int etb_write_reg(reg_t *reg, u32 value);
+int etb_read_reg(reg_t *reg);
+
+int etb_set_instr(etb_t *etb, u32 new_instr)
+{
+ jtag_device_t *device = jtag_get_device(etb->chain_pos);
+
+ if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
+ {
+ scan_field_t field;
+
+ field.device = etb->chain_pos;
+ field.num_bits = device->ir_length;
+ field.out_value = calloc(CEIL(field.num_bits, 8), 1);
+ buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
+ field.out_mask = NULL;
+ field.in_value = NULL;
+ field.in_check_value = NULL;
+ field.in_check_mask = NULL;
+ field.in_handler = NULL;
+ field.in_handler_priv = NULL;
+
+ jtag_add_ir_scan(1, &field, -1);
+
+ free(field.out_value);
+ }
+
+ return ERROR_OK;
+}
+
+int etb_scann(etb_t *etb, u32 new_scan_chain)
+{
+ if(etb->cur_scan_chain != new_scan_chain)
+ {
+ scan_field_t field;
+
+ field.device = etb->chain_pos;
+ field.num_bits = 5;
+ field.out_value = calloc(CEIL(field.num_bits, 8), 1);
+ buf_set_u32(field.out_value, 0, field.num_bits, new_scan_chain);
+ field.out_mask = NULL;
+ field.in_value = NULL;
+ field.in_check_value = NULL;
+ field.in_check_mask = NULL;
+ field.in_handler = NULL;
+ field.in_handler_priv = NULL;
+
+ /* select INTEST instruction */
+ etb_set_instr(etb, 0x2);
+ jtag_add_dr_scan(1, &field, -1);
+
+ etb->cur_scan_chain = new_scan_chain;
+
+ free(field.out_value);
+ }
+
+ return ERROR_OK;
+}
+
+reg_cache_t* etb_build_reg_cache(etb_t *etb)
+{
+ reg_cache_t *reg_cache = malloc(sizeof(reg_cache_t));
+ reg_t *reg_list = NULL;
+ etb_reg_t *arch_info = NULL;
+ int num_regs = 9;
+ int i;
+
+ /* register a register arch-type for etm registers only once */
+ if (etb_reg_arch_type == -1)
+ etb_reg_arch_type = register_reg_arch_type(etb_get_reg, etb_set_reg_w_exec);
+
+ /* the actual registers are kept in two arrays */
+ reg_list = calloc(num_regs, sizeof(reg_t));
+ arch_info = calloc(num_regs, sizeof(etb_reg_t));
+
+ /* fill in values for the reg cache */
+ reg_cache->name = "etb registers";
+ reg_cache->next = NULL;
+ reg_cache->reg_list = reg_list;
+ reg_cache->num_regs = num_regs;
+
+ /* set up registers */
+ for (i = 0; i < num_regs; i++)
+ {
+ reg_list[i].name = etb_reg_list[i];
+ reg_list[i].size = 32;
+ reg_list[i].dirty = 0;
+ reg_list[i].valid = 0;
+ reg_list[i].bitfield_desc = NULL;
+ reg_list[i].num_bitfields = 0;
+ reg_list[i].value = calloc(1, 4);
+ reg_list[i].arch_info = &arch_info[i];
+ reg_list[i].arch_type = etb_reg_arch_type;
+ reg_list[i].size = 32;
+ arch_info[i].addr = i;
+ arch_info[i].etb = etb;
+ }
+
+ return reg_cache;
+}
+
+int etb_get_reg(reg_t *reg)
+{
+ if (etb_read_reg(reg) != ERROR_OK)
+ {
+ ERROR("BUG: error scheduling etm register read");
+ exit(-1);
+ }
+
+ if (jtag_execute_queue() != ERROR_OK)
+ {
+ ERROR("register read failed");
+ }
+
+ return ERROR_OK;
+}
+
+int etb_read_reg_w_check(reg_t *reg, u8* check_value, u8* check_mask)
+{
+ etb_reg_t *etb_reg = reg->arch_info;
+ u8 reg_addr = etb_reg->addr & 0x7f;
+ scan_field_t fields[3];
+
+ DEBUG("%i", etb_reg->addr);
+
+ jtag_add_end_state(TAP_RTI);
+ etb_scann(etb_reg->etb, 0x0);
+ etb_set_instr(etb_reg->etb, 0xc);
+
+ fields[0].device = etb_reg->etb->chain_pos;
+ fields[0].num_bits = 32;
+ fields[0].out_value = reg->value;
+ fields[0].out_mask = NULL;
+ fields[0].in_value = NULL;
+ 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].device = etb_reg->etb->chain_pos;
+ fields[1].num_bits = 7;
+ fields[1].out_value = malloc(1);
+ buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
+ fields[1].out_mask = NULL;
+ fields[1].in_value = NULL;
+ fields[1].in_check_value = NULL;
+ fields[1].in_check_mask = NULL;
+ fields[1].in_handler = NULL;
+ fields[1].in_handler_priv = NULL;
+
+ fields[2].device = etb_reg->etb->chain_pos;
+ fields[2].num_bits = 1;
+ fields[2].out_value = malloc(1);
+ buf_set_u32(fields[2].out_value, 0, 1, 0);
+ fields[2].out_mask = NULL;
+ fields[2].in_value = NULL;
+ fields[2].in_check_value = NULL;
+ fields[2].in_check_mask = NULL;
+ fields[2].in_handler = NULL;
+ fields[2].in_handler_priv = NULL;
+
+ jtag_add_dr_scan(3, fields, -1);
+
+ fields[0].in_value = reg->value;
+ fields[0].in_check_value = check_value;
+ fields[0].in_check_mask = check_mask;
+
+ jtag_add_dr_scan(3, fields, -1);
+
+ free(fields[1].out_value);
+ free(fields[2].out_value);
+
+ return ERROR_OK;
+}
+
+int etb_read_reg(reg_t *reg)
+{
+ return etb_read_reg_w_check(reg, NULL, NULL);
+}
+
+int etb_set_reg(reg_t *reg, u32 value)
+{
+ if (etb_write_reg(reg, value) != ERROR_OK)
+ {
+ ERROR("BUG: error scheduling etm register write");
+ exit(-1);
+ }
+
+ buf_set_u32(reg->value, 0, reg->size, value);
+ reg->valid = 1;
+ reg->dirty = 0;
+
+ return ERROR_OK;
+}
+
+int etb_set_reg_w_exec(reg_t *reg, u8 *buf)
+{
+ etb_set_reg(reg, buf_get_u32(buf, 0, reg->size));
+
+ if (jtag_execute_queue() != ERROR_OK)
+ {
+ ERROR("register write failed");
+ exit(-1);
+ }
+ return ERROR_OK;
+}
+
+int etb_write_reg(reg_t *reg, u32 value)
+{
+ etb_reg_t *etb_reg = reg->arch_info;
+ u8 reg_addr = etb_reg->addr & 0x7f;
+ scan_field_t fields[3];
+
+ DEBUG("%i: 0x%8.8x", etb_reg->addr, value);
+
+ jtag_add_end_state(TAP_RTI);
+ etb_scann(etb_reg->etb, 0x0);
+ etb_set_instr(etb_reg->etb, 0xc);
+
+ fields[0].device = etb_reg->etb->chain_pos;
+ fields[0].num_bits = 32;
+ fields[0].out_value = malloc(4);
+ buf_set_u32(fields[0].out_value, 0, 32, value);
+ fields[0].out_mask = NULL;
+ fields[0].in_value = NULL;
+ 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].device = etb_reg->etb->chain_pos;
+ fields[1].num_bits = 7;
+ fields[1].out_value = malloc(1);
+ buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
+ fields[1].out_mask = NULL;
+ fields[1].in_value = NULL;
+ fields[1].in_check_value = NULL;
+ fields[1].in_check_mask = NULL;
+ fields[1].in_handler = NULL;
+ fields[1].in_handler_priv = NULL;
+
+ fields[2].device = etb_reg->etb->chain_pos;
+ fields[2].num_bits = 1;
+ fields[2].out_value = malloc(1);
+ buf_set_u32(fields[2].out_value, 0, 1, 1);
+ fields[2].out_mask = NULL;
+ fields[2].in_value = NULL;
+ fields[2].in_check_value = NULL;
+ fields[2].in_check_mask = NULL;
+ fields[2].in_handler = NULL;
+ fields[2].in_handler_priv = NULL;
+
+ jtag_add_dr_scan(3, fields, -1);
+
+ free(fields[0].out_value);
+ free(fields[1].out_value);
+ free(fields[2].out_value);
+
+ return ERROR_OK;
+}
+
+int etb_store_reg(reg_t *reg)
+{
+ return etb_write_reg(reg, buf_get_u32(reg->value, 0, reg->size));
+}
+
Code Review / openocd.git / commitdiff