--- /dev/null
+KERNEL=/local/src/linux-2.6-aiko-64
+KINC=$(KERNEL)/drivers/usb/serial
+
+CFLAGS=-g -I$(KINC)
+
+OBJS=ccdbg-command.o ccdbg-io.o cccp.o
+INCS=ccdbg.h cccp.h
+
+PROG=ccdbg
+
+$(PROG): $(OBJS)
+ $(CC) $(CFLAGS) -o $@ $(OBJS)
+
+clean:
+ rm -f $(PROG) $(OBJS)
+
+$(OBJS): $(INCS)
--- /dev/null
+/*
+ * Copyright © 2008 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; 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.
+ */
+
+#include "ccdbg.h"
+
+void
+cccp_write(struct ccdbg *dbg, uint8_t mask, uint8_t value)
+{
+ uint16_t set;
+ int ret;
+
+ set = (mask) | (value << 8);
+ dbg->debug_data = (dbg->debug_data & ~mask) | (value & mask);
+ ret = ioctl(dbg->fd, CP2101_IOCTL_GPIOSET, &set);
+ if (ret < 0)
+ perror("CP2101_IOCTL_GPIOSET");
+}
+
+uint8_t
+cccp_read(struct ccdbg *dbg, uint8_t mask)
+{
+ uint8_t pull_up;
+ int ret;
+ uint8_t get;
+
+ /* tri-state the bits of interest */
+ pull_up = (~dbg->debug_data) & mask;
+ if (pull_up) {
+ cccp_write(dbg, pull_up, pull_up);
+ }
+ ret = ioctl(dbg->fd, CP2101_IOCTL_GPIOGET, &get);
+ if (ret < 0) {
+ perror("CP2101_IOCTL_GPIOGET");
+ get = 0;
+ }
+ return get & mask;
+}
+
+void
+cccp_init(struct ccdbg *dbg)
+{
+ /* set all of the GPIOs to a known state */
+ cccp_write(dbg, 0xf, 0xf);
+ dbg->clock = 1;
+}
+
+void
+cccp_fini(struct ccdbg *dbg)
+{
+ /* set all of the GPIOs to a known state */
+ cccp_write(dbg, 0xf, 0xf);
+ dbg->clock = 1;
+}
--- /dev/null
+/*
+ * Copyright © 2008 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; 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.
+ */
+
+/*
+ * Interface for using a CP2103 to talk to a CC1111
+ */
+
+#ifndef _CCCP_H_
+#define _CCCP_H_
+
+void
+cccp_write(struct ccdbg *dbg, uint8_t mask, uint8_t value);
+
+uint8_t
+cccp_read(struct ccdbg *dbg, uint8_t mask);
+
+void
+cccp_init(struct ccdbg *dbg);
+
+#endif /* _CCCP_H_ */
--- /dev/null
+/*
+ * Copyright © 2008 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; 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.
+ */
+
+#include "ccdbg.h"
+
+void
+ccdbg_reset(struct ccdbg *dbg)
+{
+ /* force two rising clocks while holding RESET_N low */
+ ccdbg_clock_1_0(dbg);
+ cccp_write(dbg, CC_RESET_N, 0);
+ ccdbg_clock_0_1(dbg);
+ ccdbg_clock_1_0(dbg);
+ ccdbg_clock_0_1(dbg);
+ cccp_write(dbg, CC_RESET_N, CC_RESET_N);
+}
+
+uint8_t
+ccdbg_read_status(struct ccdbg *dbg)
+{
+ return ccdbg_cmd_write_read8(dbg, CC_READ_STATUS, NULL, 0);
+}
+
+uint8_t
+ccdbg_rd_config(struct ccdbg *dbg)
+{
+ return ccdbg_cmd_write_read8(dbg, CC_RD_CONFIG, NULL, 0);
+}
--- /dev/null
+/*
+ * Copyright © 2008 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; 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.
+ */
+
+#include "ccdbg.h"
+
+void
+ccdbg_quarter_clock(struct ccdbg *dbg)
+{
+ usleep(CC_CLOCK_US / 4);
+}
+
+struct ccdbg *
+ccdbg_open(char *file)
+{
+ struct ccdbg *dbg;
+
+ dbg = calloc(sizeof (struct ccdbg), 1);
+ if (!dbg) {
+ perror("calloc");
+ return NULL;
+ }
+ dbg->fd = open(file, 2);
+ if (dbg->fd < 0) {
+ perror(file);
+ free(dbg);
+ return NULL;
+ }
+ cccp_init(dbg);
+ return dbg;
+}
+
+void
+ccdbg_clock_1_0(struct ccdbg *dbg)
+{
+ ccdbg_quarter_clock(dbg);
+ assert(dbg->clock == 1);
+ cccp_write(dbg, CC_CLOCK, 0);
+ dbg->clock = 0;
+ ccdbg_quarter_clock(dbg);
+}
+
+void
+ccdbg_clock_0_1(struct ccdbg *dbg)
+{
+ ccdbg_quarter_clock(dbg);
+ assert(dbg->clock == 0);
+ cccp_write(dbg, CC_CLOCK, CC_CLOCK);
+ dbg->clock = 1;
+ ccdbg_quarter_clock(dbg);
+}
+
+/*
+ * By convention, every macro function is entered with dbg->clock == 1
+ */
+
+void
+ccdbg_write_bit(struct ccdbg *dbg, uint8_t bit)
+{
+ ccdbg_clock_1_0(dbg);
+ cccp_write(dbg, CC_DATA, bit ? CC_DATA : 0);
+ ccdbg_clock_0_1(dbg);
+}
+
+void
+ccdbg_write_byte(struct ccdbg *dbg, uint8_t byte)
+{
+ int bit;
+
+ for (bit = 7; bit >= 0; bit--)
+ ccdbg_write_bit(dbg, (byte >> bit) & 1);
+}
+
+uint8_t
+ccdbg_read_bit(struct ccdbg *dbg)
+{
+ uint8_t data;
+
+ ccdbg_clock_1_0(dbg);
+ data = cccp_read(dbg, CC_DATA);
+ ccdbg_clock_0_1(dbg);
+ return data ? 1 : 0;
+}
+
+uint8_t
+ccdbg_read_byte(struct ccdbg *dbg)
+{
+ int bit;
+ uint8_t byte = 0;
+
+ for (bit = 7; bit >= 0; bit--)
+ byte |= ccdbg_read_bit(dbg) << bit;
+ return byte;
+}
+
+void
+ccdbg_cmd_write(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
+{
+ int i;
+ ccdbg_write_byte(dbg, cmd);
+ for (i = 0; i < len; i++)
+ ccdbg_write_byte(dbg, data[i]);
+}
+
+uint8_t
+ccdbg_cmd_write_read8(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
+{
+ ccdbg_cmd_write(dbg, cmd, data, len);
+ return ccdbg_read_byte(dbg);
+}
+
+uint16_t
+ccdbg_cmd_write_read16(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
+{
+ uint8_t byte1, byte0;
+ ccdbg_cmd_write(dbg, cmd, data, len);
+ byte1 = ccdbg_read_byte(dbg);
+ byte0 = ccdbg_read_byte(dbg);
+ return (byte1 << 8) | byte0;
+}
+
--- /dev/null
+/*
+ * Copyright © 2008 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; 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.
+ */
+
+#ifndef _CCDBG_H_
+#define _CCDBG_H_
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <assert.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <cp2101.h>
+
+#define CC_DATA CP2101_GPIO_MASK(0)
+#define CC_CLOCK CP2101_GPIO_MASK(1)
+#define CC_RESET_N CP2101_GPIO_MASK(2)
+
+/* painfully slow for now */
+#define CC_CLOCK_US (2 * 1000)
+
+struct ccdbg {
+ int fd;
+ uint8_t debug_data;
+ int clock;
+};
+
+#include "cccp.h"
+
+#define CC_CHIP_ERASE 0x14
+
+#define CC_WR_CONFIG 0x1d
+#define CC_RD_CONFIG 0x24
+# define CC_CONFIG_TIMERS_OFF (1 << 3)
+# define CC_CONFIG_DMA_PAUSE (1 << 2)
+# define CC_CONFIG_TIMER_SUSPEND (1 << 1)
+# define CC_SET_FLASH_INFO_PAGE (1 << 0)
+
+#define CC_GET_PC 0x28
+#define CC_READ_STATUS 0x34
+# define CC_STATUS_CHIP_ERASE_DONE (1 << 7)
+# define CC_STATUS_PCON_IDLE (1 << 6)
+# define CC_STATUS_CPU_HALTED (1 << 5)
+# define CC_STATUS_POWER_MODE_0 (1 << 4)
+# define CC_STATUS_HALT_STATUS (1 << 3)
+# define CC_STATUS_DEBUG_LOCKED (1 << 2)
+# define CC_STATUS_OSCILLATOR_STABLE (1 << 1)
+# define CC_STATUS_STACK_OVERFLOW (1 << 0)
+
+#define CC_SET_HW_BRKPNT 0x3b
+# define CC_HW_BRKPNT_N(n) ((n) << 3)
+# define CC_HW_BRKPNT_N_MASK (0x3 << 3)
+# define CC_HW_BRKPNT_ENABLE (1 << 2)
+
+#define CC_HALT 0x44
+#define CC_RESUME 0x4c
+#define CC_DEBUG_INSTR(n) (0x54|(n))
+#define CC_STEP_INSTR 0x5c
+#define CC_STEP_REPLACE (0x64|(n))
+#define CC_GET_CHIP_ID 0x68
+
+#endif /* _CCDBG_H_ */