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 2, MOV_direct_A, 0x7f,
27 3, MOV_direct1_direct2, 0x7e, SFR_DPL0,
28 3, MOV_direct1_direct2, 0x7d, SFR_DPH0,
29 3, MOV_direct1_direct2, 0x7c, SFR_DPL1,
30 3, MOV_direct1_direct2, 0x7b, SFR_DPH1,
31 3, MOV_DPTR_data16, 0, 0,
38 static uint8_t write8[] = {
46 static uint8_t read8[] = {
52 static uint8_t memory_fini[] = {
53 2, MOV_A_direct, 0x7f,
54 3, MOV_direct1_direct2, SFR_DPL0, 0x7e,
55 3, MOV_direct1_direct2, SFR_DPH0, 0x7d,
56 3, MOV_direct1_direct2, SFR_DPL1, 0x7c,
57 3, MOV_direct1_direct2, SFR_DPH1, 0x7b,
62 ccdbg_write_memory(struct ccdbg *dbg, uint16_t addr, uint8_t *bytes, int nbytes)
65 memory_init[HIGH_START] = addr >> 8;
66 memory_init[LOW_START] = addr;
67 (void) ccdbg_execute(dbg, memory_init);
68 for (i = 0; i < nbytes; i++) {
69 write8[DATA_BYTE] = *bytes++;
70 ccdbg_execute(dbg, write8);
71 if ((i & 0xf) == 0xf) {
72 ccdbg_debug(CC_DEBUG_MEMORY, ".");
76 if ((i & 0xff) == 0xff) {
77 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
81 (void) ccdbg_execute(dbg, memory_fini);
83 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
88 ccdbg_read_memory(struct ccdbg *dbg, uint16_t addr, uint8_t *bytes, int nbytes)
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, ".");
101 if ((i & 0xff) == 0xff) {
102 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
106 (void) ccdbg_execute(dbg, memory_fini);
108 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
113 ccdbg_write_uint8(struct ccdbg *dbg, uint16_t addr, uint8_t byte)
115 return ccdbg_write_memory(dbg, addr, &byte, 1);
119 ccdbg_write_hex_image(struct ccdbg *dbg, struct hex_image *image, uint16_t offset)
121 ccdbg_write_memory(dbg, image->address + offset, image->data, image->length);
126 ccdbg_read_hex_image(struct ccdbg *dbg, uint16_t address, uint16_t length)
128 struct hex_image *image;
130 image = calloc(sizeof(struct hex_image) + length, 1);
131 image->address = address;
132 image->length = length;
133 memset(image->data, 0xff, length);
134 ccdbg_read_memory(dbg, address, image->data, length);
138 static uint8_t sfr_init[] = {
139 2, MOV_direct_A, 0x7f,
143 static uint8_t sfr_fini[] = {
144 2, MOV_A_direct, 0x7f,
148 static uint8_t sfr_read[] = {
150 #define SFR_READ_ADDR 2
154 static uint8_t sfr_write[] = {
155 3, MOV_direct_data, 0, 0,
156 #define SFR_WRITE_ADDR 2
157 #define SFR_WRITE_DATA 3
162 ccdbg_read_sfr(struct ccdbg *dbg, uint8_t addr, uint8_t *bytes, int nbytes)
165 (void) ccdbg_execute(dbg, sfr_init);
166 for (i = 0; i < nbytes; i++) {
167 sfr_read[SFR_READ_ADDR] = addr + i;
168 *bytes++ = ccdbg_execute(dbg, sfr_read);
170 (void) ccdbg_execute(dbg, sfr_fini);
175 ccdbg_write_sfr(struct ccdbg *dbg, uint8_t addr, uint8_t *bytes, int nbytes)
179 for (i = 0; i < nbytes; i++) {
180 sfr_write[SFR_WRITE_ADDR] = addr + i;
181 sfr_write[SFR_WRITE_DATA] = *bytes++;
182 ccdbg_execute(dbg, sfr_write);