2 * Copyright © 2008 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 * Read and write arbitrary memory through the debug port
25 static uint8_t memory_init[] = {
26 3, MOV_DPTR_data16, 0, 0,
33 static uint8_t write8[] = {
41 static uint8_t read8[] = {
48 ccdbg_write_memory(struct ccdbg *dbg, uint16_t addr, uint8_t *bytes, int nbytes)
54 return cc_usb_write_memory(dbg->usb, addr, bytes, nbytes);
55 ccdbg_state_save(dbg, &state, CC_STATE_ACC | CC_STATE_PSW | CC_STATE_DP);
56 memory_init[HIGH_START] = addr >> 8;
57 memory_init[LOW_START] = addr;
58 (void) ccdbg_execute(dbg, memory_init);
59 for (i = 0; i < nbytes; i++) {
60 write8[DATA_BYTE] = *bytes++;
61 ccdbg_execute(dbg, write8);
62 if ((i & 0xf) == 0xf) {
63 ccdbg_debug(CC_DEBUG_MEMORY, ".");
64 ccdbg_flush(CC_DEBUG_MEMORY);
67 if ((i & 0xff) == 0xff) {
68 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
72 ccdbg_state_restore(dbg, &state);
74 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
79 ccdbg_read_memory(struct ccdbg *dbg, uint16_t addr, uint8_t *bytes, int nbytes)
84 if (ccdbg_rom_contains(dbg, addr, nbytes)) {
85 ccdbg_rom_replace_xmem(dbg, addr, bytes, nbytes);
89 return cc_usb_read_memory(dbg->usb, addr, bytes, nbytes);
90 ccdbg_state_save(dbg, &state, CC_STATE_ACC | CC_STATE_PSW | CC_STATE_DP);
91 memory_init[HIGH_START] = addr >> 8;
92 memory_init[LOW_START] = addr;
93 (void) ccdbg_execute(dbg, memory_init);
94 for (i = 0; i < nbytes; i++) {
95 *bytes++ = ccdbg_execute(dbg, read8);
96 if ((i & 0xf) == 0xf) {
97 ccdbg_debug(CC_DEBUG_MEMORY, ".");
98 ccdbg_flush(CC_DEBUG_MEMORY);
101 if ((i & 0xff) == 0xff) {
102 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
106 ccdbg_state_replace_xmem(dbg, &state, addr, bytes, nbytes);
107 ccdbg_state_restore(dbg, &state);
109 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
114 ccdbg_write_uint8(struct ccdbg *dbg, uint16_t addr, uint8_t byte)
116 return ccdbg_write_memory(dbg, addr, &byte, 1);
120 ccdbg_write_hex_image(struct ccdbg *dbg, struct hex_image *image, uint16_t offset)
122 ccdbg_write_memory(dbg, image->address + offset, image->data, image->length);
127 ccdbg_read_hex_image(struct ccdbg *dbg, uint16_t address, uint16_t length)
129 struct hex_image *image;
131 image = calloc(sizeof(struct hex_image) + length, 1);
132 image->address = address;
133 image->length = length;
134 memset(image->data, 0xff, length);
135 ccdbg_read_memory(dbg, address, image->data, length);
139 static uint8_t sfr_read[] = {
141 #define SFR_READ_ADDR 2
145 static uint8_t sfr_write[] = {
146 3, MOV_direct_data, 0, 0,
147 #define SFR_WRITE_ADDR 2
148 #define SFR_WRITE_DATA 3
153 ccdbg_read_sfr(struct ccdbg *dbg, uint8_t addr, uint8_t *bytes, int nbytes)
156 struct ccstate state;
158 ccdbg_state_save(dbg, &state, CC_STATE_ACC);
159 for (i = 0; i < nbytes; i++) {
160 sfr_read[SFR_READ_ADDR] = addr + i;
161 *bytes++ = ccdbg_execute(dbg, sfr_read);
163 ccdbg_state_replace_sfr(dbg, &state, addr, bytes, nbytes);
164 ccdbg_state_restore(dbg, &state);
169 ccdbg_write_sfr(struct ccdbg *dbg, uint8_t addr, uint8_t *bytes, int nbytes)
173 for (i = 0; i < nbytes; i++) {
174 sfr_write[SFR_WRITE_ADDR] = addr + i;
175 sfr_write[SFR_WRITE_DATA] = *bytes++;
176 ccdbg_execute(dbg, sfr_write);