--- /dev/null
+/*
+ * Copyright © 2010 Keith Packard <keithp@keithp.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; version 2 of the License.
+ *
+ * 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.
+ */
+
+package org.altusmetrum.altoslib_1;
+
+import java.io.*;
+
+public class AltosDebug {
+
+ public static final byte WR_CONFIG = 0x1d;
+ public static final byte RD_CONFIG = 0x24;
+ public static final byte CONFIG_TIMERS_OFF = (1 << 3);
+ public static final byte CONFIG_DMA_PAUSE = (1 << 2);
+ public static final byte CONFIG_TIMER_SUSPEND = (1 << 1);
+ public static final byte SET_FLASH_INFO_PAGE = (1 << 0);
+
+ public static final byte GET_PC = 0x28;
+ public static final byte READ_STATUS = 0x34;
+ public static final byte STATUS_CHIP_ERASE_DONE = (byte) (1 << 7);
+ public static final byte STATUS_PCON_IDLE = (1 << 6);
+ public static final byte STATUS_CPU_HALTED = (1 << 5);
+ public static final byte STATUS_POWER_MODE_0 = (1 << 4);
+ public static final byte STATUS_HALT_STATUS = (1 << 3);
+ public static final byte STATUS_DEBUG_LOCKED = (1 << 2);
+ public static final byte STATUS_OSCILLATOR_STABLE = (1 << 1);
+ public static final byte STATUS_STACK_OVERFLOW = (1 << 0);
+
+ public static final byte SET_HW_BRKPNT = 0x3b;
+ public static byte HW_BRKPNT_N(byte n) { return (byte) ((n) << 3); }
+ public static final byte HW_BRKPNT_N_MASK = (0x3 << 3);
+ public static final byte HW_BRKPNT_ENABLE = (1 << 2);
+
+ public static final byte HALT = 0x44;
+ public static final byte RESUME = 0x4c;
+ public static byte DEBUG_INSTR(byte n) { return (byte) (0x54|(n)); }
+ public static final byte STEP_INSTR = 0x5c;
+ public static byte STEP_REPLACE(byte n) { return (byte) (0x64|(n)); }
+ public static final byte GET_CHIP_ID = 0x68;
+
+
+ AltosLink link;
+
+ boolean debug_mode;
+
+ void ensure_debug_mode() {
+ if (!debug_mode) {
+ link.printf("D\n");
+ try {
+ link.flush_input();
+ } catch (InterruptedException ie) {
+ }
+ debug_mode = true;
+ }
+ }
+
+ void dump_memory(String header, int address, byte[] bytes, int start, int len) {
+ System.out.printf("%s\n", header);
+ for (int j = 0; j < len; j++) {
+ if ((j & 15) == 0) {
+ if (j != 0)
+ System.out.printf("\n");
+ System.out.printf ("%04x:", address + j);
+ }
+ System.out.printf(" %02x", bytes[start + j]);
+ }
+ System.out.printf("\n");
+ }
+
+ public void close() {
+ link.close();
+ }
+
+ /*
+ * Write target memory
+ */
+ public void write_memory(int address, byte[] bytes, int start, int len) {
+ ensure_debug_mode();
+// dump_memory("write_memory", address, bytes, start, len);
+ link.printf("O %x %x\n", len, address);
+ for (int i = 0; i < len; i++)
+ link.printf("%02x", bytes[start + i]);
+ }
+
+ public void write_memory(int address, byte[] bytes) {
+ write_memory(address, bytes, 0, bytes.length);
+ }
+
+ /*
+ * Read target memory
+ */
+ public byte[] read_memory(int address, int length)
+ throws IOException, InterruptedException {
+ byte[] data = new byte[length];
+
+ link.flush_input();
+ ensure_debug_mode();
+ link.printf("I %x %x\n", length, address);
+ int i = 0;
+ int start = 0;
+ while (i < length) {
+ String line = link.get_reply().trim();
+ if (!AltosLib.ishex(line) || line.length() % 2 != 0)
+ throw new IOException(
+ String.format
+ ("Invalid reply \"%s\"", line));
+ int this_time = line.length() / 2;
+ for (int j = 0; j < this_time; j++)
+ data[start + j] = (byte) ((AltosLib.fromhex(line.charAt(j*2)) << 4) +
+ AltosLib.fromhex(line.charAt(j*2+1)));
+ start += this_time;
+ i += this_time;
+ }
+// dump_memory("read_memory", address, data, 0, length);
+
+ return data;
+ }
+
+ /*
+ * Write raw bytes to the debug link using the 'P' command
+ */
+ public void write_bytes(byte[] bytes) throws IOException {
+ int i = 0;
+ ensure_debug_mode();
+ while (i < bytes.length) {
+ int this_time = bytes.length - i;
+ if (this_time > 8)
+ this_time = 0;
+ link.printf("P");
+ for (int j = 0; j < this_time; j++)
+ link.printf(" %02x", bytes[i+j]);
+ link.printf("\n");
+ i += this_time;
+ }
+ }
+
+ public void write_byte(byte b) throws IOException {
+ byte[] bytes = { b };
+ write_bytes(bytes);
+ }
+
+ /*
+ * Read raw bytes from the debug link using the 'G' command
+ */
+ public byte[] read_bytes(int length)
+ throws IOException, InterruptedException {
+
+ link.flush_input();
+ ensure_debug_mode();
+ link.printf("G %x\n", length);
+ int i = 0;
+ byte[] data = new byte[length];
+ while (i < length) {
+ String line = link.get_reply();
+
+ if (line == null)
+ throw new IOException("Timeout in read_bytes");
+ line = line.trim();
+ String tokens[] = line.split("\\s+");
+ for (int j = 0; j < tokens.length; j++) {
+ if (!AltosLib.ishex(tokens[j]) ||
+ tokens[j].length() != 2)
+ throw new IOException(
+ String.format
+ ("Invalid read_bytes reply \"%s\"", line));
+ try {
+ if (i + j >= length)
+ throw new IOException(
+ String.format
+ ("Invalid read_bytes reply \"%s\"", line));
+ else
+ data[i + j] = (byte) Integer.parseInt(tokens[j], 16);
+ } catch (NumberFormatException ne) {
+ throw new IOException(
+ String.format
+ ("Invalid read_bytes reply \"%s\"", line));
+ }
+ }
+ i += tokens.length;
+ }
+ return data;
+ }
+
+ public byte read_byte() throws IOException, InterruptedException {
+ return read_bytes(1)[0];
+ }
+
+ public byte debug_instr(byte[] instruction) throws IOException, InterruptedException {
+ byte[] command = new byte[1 + instruction.length];
+ command[0] = DEBUG_INSTR((byte) instruction.length);
+ for (int i = 0; i < instruction.length; i++)
+ command[i+1] = instruction[i];
+ write_bytes(command);
+ return read_byte();
+ }
+
+ public byte resume() throws IOException, InterruptedException {
+ write_byte(RESUME);
+ return read_byte();
+ }
+
+ public int read_uint16() throws IOException, InterruptedException {
+ byte[] d = read_bytes(2);
+ return ((int) (d[0] & 0xff) << 8) | (d[1] & 0xff);
+ }
+
+ public int read_uint8() throws IOException, InterruptedException {
+ byte[] d = read_bytes(1);
+ return (int) (d[0] & 0xff);
+ }
+
+ public int get_chip_id() throws IOException, InterruptedException {
+ write_byte(GET_CHIP_ID);
+ return read_uint16();
+ }
+
+ public int get_pc() throws IOException, InterruptedException {
+ write_byte(GET_PC);
+ return read_uint16();
+ }
+
+ public byte read_status() throws IOException, InterruptedException {
+ write_byte(READ_STATUS);
+ return read_byte();
+ }
+
+ static final byte LJMP = 0x02;
+
+ public void set_pc(int pc) throws IOException, InterruptedException {
+ byte high = (byte) (pc >> 8);
+ byte low = (byte) pc;
+ byte[] jump_mem = { LJMP, high, low };
+ debug_instr(jump_mem);
+ }
+
+ public boolean check_connection() throws IOException, InterruptedException {
+ byte reply = read_status();
+ if ((reply & STATUS_CHIP_ERASE_DONE) == 0)
+ return false;
+ if ((reply & STATUS_PCON_IDLE) != 0)
+ return false;
+ if ((reply & STATUS_POWER_MODE_0) == 0)
+ return false;
+ return true;
+ }
+
+ public AltosRomconfig romconfig() {
+ try {
+ byte[] bytes = read_memory(0xa0, 10);
+ return new AltosRomconfig(bytes, 0);
+ } catch (IOException ie) {
+ } catch (InterruptedException ie) {
+ }
+ return new AltosRomconfig();
+ }
+
+ /*
+ * Reset target
+ */
+ public void reset() {
+ link.printf ("R\n");
+ }
+
+ public AltosDebug (AltosLink link) {
+ this.link = link;
+ }
+}
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projects / fw / altos / blobdiff