aboutsummaryrefslogtreecommitdiffstats
path: root/package/boot/rbcfg/src/main.c
diff options
context:
space:
mode:
Diffstat (limited to 'package/boot/rbcfg/src/main.c')
-rw-r--r--package/boot/rbcfg/src/main.c791
1 files changed, 791 insertions, 0 deletions
diff --git a/package/boot/rbcfg/src/main.c b/package/boot/rbcfg/src/main.c
new file mode 100644
index 0000000..b7cf79f
--- /dev/null
+++ b/package/boot/rbcfg/src/main.c
@@ -0,0 +1,791 @@
+/*
+ * RouterBOOT configuration utility
+ *
+ * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <linux/limits.h>
+
+#include "rbcfg.h"
+#include "cyg_crc.h"
+
+#define RBCFG_TMP_FILE "/tmp/.rbcfg"
+#define RBCFG_MTD_NAME "soft_config"
+
+#define RB_ERR_NOTFOUND 1
+#define RB_ERR_INVALID 2
+#define RB_ERR_NOMEM 3
+#define RB_ERR_IO 4
+
+#define ARRAY_SIZE(_a) (sizeof((_a)) / sizeof((_a)[0]))
+
+struct rbcfg_ctx {
+ char *mtd_device;
+ char *tmp_file;
+ char *buf;
+ unsigned buflen;
+};
+
+struct rbcfg_value {
+ const char *name;
+ const char *desc;
+ union {
+ uint32_t u32;
+ const char *raw;
+ } val;
+};
+
+#define RBCFG_ENV_TYPE_U32 0
+
+struct rbcfg_env {
+ const char *name;
+ int type;
+ uint16_t id;
+ const struct rbcfg_value *values;
+ int num_values;
+};
+
+#define CMD_FLAG_USES_CFG 0x01
+
+struct rbcfg_command {
+ const char *command;
+ const char *usage;
+ int flags;
+ int (*exec)(int argc, const char *argv[]);
+};
+
+static void usage(void);
+
+/* Globals */
+
+static struct rbcfg_ctx *rbcfg_ctx;
+static char *rbcfg_name;
+
+#define CFG_U32(_name, _desc, _val) { \
+ .name = (_name), \
+ .desc = (_desc), \
+ .val.u32 = (_val), \
+}
+
+static const struct rbcfg_value rbcfg_boot_delay[] = {
+ CFG_U32("1", "1 second", RB_BOOT_DELAY_1SEC),
+ CFG_U32("2", "2 seconds", RB_BOOT_DELAY_2SEC),
+ CFG_U32("3", "3 seconds", RB_BOOT_DELAY_3SEC),
+ CFG_U32("4", "4 seconds", RB_BOOT_DELAY_4SEC),
+ CFG_U32("5", "5 seconds", RB_BOOT_DELAY_5SEC),
+ CFG_U32("6", "6 seconds", RB_BOOT_DELAY_6SEC),
+ CFG_U32("7", "7 seconds", RB_BOOT_DELAY_7SEC),
+ CFG_U32("8", "8 seconds", RB_BOOT_DELAY_8SEC),
+ CFG_U32("9", "9 seconds", RB_BOOT_DELAY_9SEC),
+};
+
+static const struct rbcfg_value rbcfg_boot_device[] = {
+ CFG_U32("eth", "boot over Ethernet",
+ RB_BOOT_DEVICE_ETHER),
+ CFG_U32("nandeth", "boot from NAND, if fail then Ethernet",
+ RB_BOOT_DEVICE_NANDETH),
+ CFG_U32("ethnand", "boot Ethernet once, then NAND",
+ RB_BOOT_DEVICE_ETHONCE),
+ CFG_U32("nand", "boot from NAND only",
+ RB_BOOT_DEVICE_NANDONLY),
+};
+
+static const struct rbcfg_value rbcfg_boot_key[] = {
+ CFG_U32("any", "any key", RB_BOOT_KEY_ANY),
+ CFG_U32("del", "<Delete> key only", RB_BOOT_KEY_DEL),
+};
+
+static const struct rbcfg_value rbcfg_boot_protocol[] = {
+ CFG_U32("bootp", "BOOTP protocol", RB_BOOT_PROTOCOL_BOOTP),
+ CFG_U32("dhcp", "DHCP protocol", RB_BOOT_PROTOCOL_DHCP),
+};
+
+static const struct rbcfg_value rbcfg_uart_speed[] = {
+ CFG_U32("115200", "", RB_UART_SPEED_115200),
+ CFG_U32("57600", "", RB_UART_SPEED_57600),
+ CFG_U32("38400", "", RB_UART_SPEED_38400),
+ CFG_U32("19200", "", RB_UART_SPEED_19200),
+ CFG_U32("9600", "", RB_UART_SPEED_9600),
+ CFG_U32("4800", "", RB_UART_SPEED_4800),
+ CFG_U32("2400", "", RB_UART_SPEED_2400),
+ CFG_U32("1200", "", RB_UART_SPEED_1200),
+ CFG_U32("off", "disable console output", RB_UART_SPEED_OFF),
+};
+
+static const struct rbcfg_value rbcfg_cpu_mode[] = {
+ CFG_U32("powersave", "power save", RB_CPU_MODE_POWERSAVE),
+ CFG_U32("regular", "regular (better for -0c environment)",
+ RB_CPU_MODE_REGULAR),
+};
+
+static const struct rbcfg_value rbcfg_booter[] = {
+ CFG_U32("regular", "load regular booter", RB_BOOTER_REGULAR),
+ CFG_U32("backup", "force backup-booter loading", RB_BOOTER_BACKUP),
+};
+
+static const struct rbcfg_env rbcfg_envs[] = {
+ {
+ .name = "boot_delay",
+ .id = RB_ID_BOOT_DELAY,
+ .type = RBCFG_ENV_TYPE_U32,
+ .values = rbcfg_boot_delay,
+ .num_values = ARRAY_SIZE(rbcfg_boot_delay),
+ }, {
+ .name = "boot_device",
+ .id = RB_ID_BOOT_DEVICE,
+ .type = RBCFG_ENV_TYPE_U32,
+ .values = rbcfg_boot_device,
+ .num_values = ARRAY_SIZE(rbcfg_boot_device),
+ }, {
+ .name = "boot_key",
+ .id = RB_ID_BOOT_KEY,
+ .type = RBCFG_ENV_TYPE_U32,
+ .values = rbcfg_boot_key,
+ .num_values = ARRAY_SIZE(rbcfg_boot_key),
+ }, {
+ .name = "boot_protocol",
+ .id = RB_ID_BOOT_PROTOCOL,
+ .type = RBCFG_ENV_TYPE_U32,
+ .values = rbcfg_boot_protocol,
+ .num_values = ARRAY_SIZE(rbcfg_boot_protocol),
+ }, {
+ .name = "booter",
+ .id = RB_ID_BOOTER,
+ .type = RBCFG_ENV_TYPE_U32,
+ .values = rbcfg_booter,
+ .num_values = ARRAY_SIZE(rbcfg_booter),
+ }, {
+ .name = "cpu_mode",
+ .id = RB_ID_CPU_MODE,
+ .type = RBCFG_ENV_TYPE_U32,
+ .values = rbcfg_cpu_mode,
+ .num_values = ARRAY_SIZE(rbcfg_cpu_mode),
+ }, {
+ .name = "uart_speed",
+ .id = RB_ID_UART_SPEED,
+ .type = RBCFG_ENV_TYPE_U32,
+ .values = rbcfg_uart_speed,
+ .num_values = ARRAY_SIZE(rbcfg_uart_speed),
+ }
+};
+
+static inline uint16_t
+get_u16(const void *buf)
+{
+ const uint8_t *p = buf;
+
+ return ((uint16_t) p[1] + ((uint16_t) p[0] << 8));
+}
+
+static inline uint32_t
+get_u32(const void *buf)
+{
+ const uint8_t *p = buf;
+
+ return ((uint32_t) p[3] + ((uint32_t) p[2] << 8) +
+ ((uint32_t) p[1] << 16) + ((uint32_t) p[0] << 24));
+}
+
+static inline void
+put_u32(void *buf, uint32_t val)
+{
+ uint8_t *p = buf;
+
+ p[3] = val & 0xff;
+ p[2] = (val >> 8) & 0xff;
+ p[1] = (val >> 16) & 0xff;
+ p[0] = (val >> 24) & 0xff;
+}
+
+static int
+rbcfg_find_tag(struct rbcfg_ctx *ctx, uint16_t tag_id, uint16_t *tag_len,
+ void **tag_data)
+{
+ uint16_t id;
+ uint16_t len;
+ char *buf = ctx->buf;
+ unsigned int buflen = ctx->buflen;
+ int ret = RB_ERR_NOTFOUND;
+
+ /* skip magic and CRC value */
+ buf += 8;
+ buflen -= 8;
+
+ while (buflen > 2) {
+ len = get_u16(buf);
+ buf += 2;
+ buflen -= 2;
+
+ if (buflen < 2)
+ break;
+
+ id = get_u16(buf);
+ buf += 2;
+ buflen -= 2;
+
+ if (id == RB_ID_TERMINATOR)
+ break;
+
+ if (buflen < len)
+ break;
+
+ if (id == tag_id) {
+ *tag_len = len;
+ *tag_data = buf;
+ ret = 0;
+ break;
+ }
+
+ buf += len;
+ buflen -= len;
+ }
+
+ if (ret)
+ fprintf(stderr, "no tag found with id=%u\n", tag_id);
+
+ return ret;
+}
+
+static int
+rbcfg_get_u32(struct rbcfg_ctx *ctx, uint16_t id, uint32_t *val)
+{
+ void *tag_data;
+ uint16_t tag_len;
+ int err;
+
+ err = rbcfg_find_tag(ctx, id, &tag_len, &tag_data);
+ if (err)
+ return err;
+
+ *val = get_u32(tag_data);
+ return 0;
+}
+
+static int
+rbcfg_set_u32(struct rbcfg_ctx *ctx, uint16_t id, uint32_t val)
+{
+ void *tag_data;
+ uint16_t tag_len;
+ int err;
+
+ err = rbcfg_find_tag(ctx, id, &tag_len, &tag_data);
+ if (err)
+ return err;
+
+ put_u32(tag_data, val);
+ return 0;
+}
+
+char *rbcfg_find_mtd(const char *name, int *erase_size)
+{
+ FILE *f;
+ int mtd_num;
+ char dev[PATH_MAX];
+ char *ret = NULL;
+ struct stat s;
+ int err;
+
+ f = fopen("/proc/mtd", "r");
+ if (!f)
+ return NULL;
+
+ while (1) {
+ char *p;
+ p = fgets(dev, sizeof(dev), f);
+ if (!p)
+ break;
+
+ if (!strstr(dev, name))
+ continue;
+
+ err = sscanf(dev, "mtd%d: %08x", &mtd_num, erase_size);
+ if (err != 2)
+ break;
+
+ sprintf(dev, "/dev/mtdblock%d", mtd_num);
+ err = stat(dev, &s);
+ if (err < 0)
+ break;
+
+ if ((s.st_mode & S_IFBLK) == 0)
+ break;
+
+ ret = malloc(strlen(dev) + 1);
+ if (ret == NULL)
+ break;
+
+ strncpy(ret, dev, strlen(dev) + 1);
+ break;
+ }
+
+ fclose(f);
+ return ret;
+}
+
+static int
+rbcfg_check_tmp(struct rbcfg_ctx *ctx)
+{
+ struct stat s;
+ int err;
+
+ err = stat(ctx->tmp_file, &s);
+ if (err < 0)
+ return 0;
+
+ if ((s.st_mode & S_IFREG) == 0)
+ return 0;
+
+ if (s.st_size != ctx->buflen)
+ return 0;
+
+ return 1;
+}
+
+static int
+rbcfg_load(struct rbcfg_ctx *ctx)
+{
+ uint32_t magic;
+ uint32_t crc_orig, crc;
+ char *name;
+ int tmp;
+ int fd;
+ int err;
+
+ tmp = rbcfg_check_tmp(ctx);
+ name = (tmp) ? ctx->tmp_file : ctx->mtd_device;
+
+ fd = open(name, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "unable to open %s\n", name);
+ err = RB_ERR_IO;
+ goto err;
+ }
+
+ err = read(fd, ctx->buf, ctx->buflen);
+ if (err != ctx->buflen) {
+ fprintf(stderr, "unable to read from %s\n", name);
+ err = RB_ERR_IO;
+ goto err_close;
+ }
+
+ magic = get_u32(ctx->buf);
+ if (magic != RB_MAGIC_SOFT) {
+ fprintf(stderr, "invalid configuration\n");
+ err = RB_ERR_INVALID;
+ goto err_close;
+ }
+
+ crc_orig = get_u32(ctx->buf + 4);
+ put_u32(ctx->buf + 4, 0);
+ crc = cyg_ether_crc32((unsigned char *) ctx->buf, ctx->buflen);
+ if (crc != crc_orig) {
+ fprintf(stderr, "configuration has CRC error\n");
+ err = RB_ERR_INVALID;
+ goto err_close;
+ }
+
+ err = 0;
+
+ err_close:
+ close(fd);
+ err:
+ return err;
+}
+
+static int
+rbcfg_open()
+{
+ char *mtd_device;
+ struct rbcfg_ctx *ctx;
+ int buflen;
+ int err;
+
+ mtd_device = rbcfg_find_mtd(RBCFG_MTD_NAME, &buflen);
+ if (!mtd_device) {
+ fprintf(stderr, "unable to find configuration\n");
+ return RB_ERR_NOTFOUND;
+ }
+
+ ctx = malloc(sizeof(struct rbcfg_ctx) + buflen);
+ if (ctx == NULL) {
+ err = RB_ERR_NOMEM;
+ goto err_free_mtd;
+ }
+
+ ctx->mtd_device = mtd_device;
+ ctx->tmp_file = RBCFG_TMP_FILE;
+ ctx->buflen = buflen;
+ ctx->buf = (char *) &ctx[1];
+
+ err = rbcfg_load(ctx);
+ if (err)
+ goto err_free_ctx;
+
+ rbcfg_ctx = ctx;
+ return 0;
+
+ err_free_ctx:
+ free(ctx);
+ err_free_mtd:
+ free(mtd_device);
+ return err;
+}
+
+static int
+rbcfg_update(int tmp)
+{
+ struct rbcfg_ctx *ctx = rbcfg_ctx;
+ char *name;
+ uint32_t crc;
+ int fd;
+ int err;
+
+ put_u32(ctx->buf, RB_MAGIC_SOFT);
+ put_u32(ctx->buf + 4, 0);
+ crc = cyg_ether_crc32((unsigned char *) ctx->buf, ctx->buflen);
+ put_u32(ctx->buf + 4, crc);
+
+ name = (tmp) ? ctx->tmp_file : ctx->mtd_device;
+ fd = open(name, O_WRONLY | O_CREAT);
+ if (fd < 0) {
+ fprintf(stderr, "unable to open %s for writing\n", name);
+ err = RB_ERR_IO;
+ goto out;
+ }
+
+ err = write(fd, ctx->buf, ctx->buflen);
+ if (err != ctx->buflen) {
+ err = RB_ERR_IO;
+ goto out_close;
+ }
+
+ fsync(fd);
+ err = 0;
+
+ out_close:
+ close(fd);
+ out:
+ return err;
+}
+
+static void
+rbcfg_close(void)
+{
+ struct rbcfg_ctx *ctx;
+
+ ctx = rbcfg_ctx;
+ free(ctx->mtd_device);
+ free(ctx);
+}
+
+static const struct rbcfg_value *
+rbcfg_env_find(const struct rbcfg_env *env, const char *name)
+{
+ unsigned i;
+
+ for (i = 0; i < env->num_values; i++) {
+ const struct rbcfg_value *v = &env->values[i];
+
+ if (strcmp(v->name, name) == 0)
+ return v;
+ }
+
+ return NULL;
+}
+
+static const struct rbcfg_value *
+rbcfg_env_find_u32(const struct rbcfg_env *env, uint32_t val)
+{
+ unsigned i;
+
+ for (i = 0; i < env->num_values; i++) {
+ const struct rbcfg_value *v = &env->values[i];
+
+ if (v->val.u32 == val)
+ return v;
+ }
+
+ return NULL;
+}
+
+static const char *
+rbcfg_env_get_u32(const struct rbcfg_env *env)
+{
+ const struct rbcfg_value *v;
+ uint32_t val;
+ int err;
+
+ err = rbcfg_get_u32(rbcfg_ctx, env->id, &val);
+ if (err)
+ return NULL;
+
+ v = rbcfg_env_find_u32(env, val);
+ if (v == NULL) {
+ fprintf(stderr, "unknown value %08x found for %s\n",
+ val, env->name);
+ return NULL;
+ }
+
+ return v->name;
+}
+
+static int
+rbcfg_env_set_u32(const struct rbcfg_env *env, const char *data)
+{
+ const struct rbcfg_value *v;
+ int err;
+
+ v = rbcfg_env_find(env, data);
+ if (v == NULL) {
+ fprintf(stderr, "invalid value '%s'\n", data);
+ return RB_ERR_INVALID;
+ }
+
+ err = rbcfg_set_u32(rbcfg_ctx, env->id, v->val.u32);
+ return err;
+}
+
+static const char *
+rbcfg_env_get(const struct rbcfg_env *env)
+{
+ const char *ret = NULL;
+
+ switch (env->type) {
+ case RBCFG_ENV_TYPE_U32:
+ ret = rbcfg_env_get_u32(env);
+ break;
+ }
+
+ return ret;
+}
+
+static int
+rbcfg_env_set(const struct rbcfg_env *env, const char *data)
+{
+ int ret = 0;
+
+ switch (env->type) {
+ case RBCFG_ENV_TYPE_U32:
+ ret = rbcfg_env_set_u32(env, data);
+ break;
+ }
+
+ return ret;
+}
+
+static int
+rbcfg_cmd_apply(int argc, const char *argv[])
+{
+ return rbcfg_update(0);
+}
+
+static int
+rbcfg_cmd_help(int argc, const char *argv[])
+{
+ usage();
+ return 0;
+}
+
+static int
+rbcfg_cmd_get(int argc, const char *argv[])
+{
+ int err = RB_ERR_NOTFOUND;
+ int i;
+
+ if (argc != 1) {
+ usage();
+ return RB_ERR_INVALID;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(rbcfg_envs); i++) {
+ const struct rbcfg_env *env = &rbcfg_envs[i];
+ const char *value;
+
+ if (strcmp(env->name, argv[0]))
+ continue;
+
+ value = rbcfg_env_get(env);
+ if (value) {
+ fprintf(stdout, "%s\n", value);
+ err = 0;
+ }
+ break;
+ }
+
+ return err;
+}
+
+static int
+rbcfg_cmd_set(int argc, const char *argv[])
+{
+ int err = RB_ERR_INVALID;
+ int i;
+
+ if (argc != 2) {
+ /* not enough parameters */
+ usage();
+ return RB_ERR_INVALID;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(rbcfg_envs); i++) {
+ const struct rbcfg_env *env = &rbcfg_envs[i];
+
+ if (strcmp(env->name, argv[0]))
+ continue;
+
+ err = rbcfg_env_set(env, argv[1]);
+ if (err == 0)
+ err = rbcfg_update(1);
+ break;
+ }
+
+ return err;
+}
+
+static int
+rbcfg_cmd_show(int argc, const char *argv[])
+{
+ int i;
+
+ if (argc != 0) {
+ usage();
+ return RB_ERR_INVALID;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(rbcfg_envs); i++) {
+ const struct rbcfg_env *env = &rbcfg_envs[i];
+ const char *value;
+
+ value = rbcfg_env_get(env);
+ if (value)
+ fprintf(stdout, "%s=%s\n", env->name, value);
+ }
+
+ return 0;
+}
+
+static const struct rbcfg_command rbcfg_commands[] = {
+ {
+ .command = "apply",
+ .usage = "apply\n"
+ "\t- write configuration to the mtd device",
+ .flags = CMD_FLAG_USES_CFG,
+ .exec = rbcfg_cmd_apply,
+ }, {
+ .command = "help",
+ .usage = "help\n"
+ "\t- show this screen",
+ .exec = rbcfg_cmd_help,
+ }, {
+ .command = "get",
+ .usage = "get <name>\n"
+ "\t- get value of the configuration option <name>",
+ .flags = CMD_FLAG_USES_CFG,
+ .exec = rbcfg_cmd_get,
+ }, {
+ .command = "set",
+ .usage = "set <name> <value>\n"
+ "\t- set value of the configuration option <name> to <value>",
+ .flags = CMD_FLAG_USES_CFG,
+ .exec = rbcfg_cmd_set,
+ }, {
+ .command = "show",
+ .usage = "show\n"
+ "\t- show value of all configuration options",
+ .flags = CMD_FLAG_USES_CFG,
+ .exec = rbcfg_cmd_show,
+ }
+};
+
+static void
+usage(void)
+{
+ char buf[255];
+ int len;
+ int i;
+
+ fprintf(stderr, "Usage: %s <command>\n", rbcfg_name);
+
+ fprintf(stderr, "\nCommands:\n");
+ for (i = 0; i < ARRAY_SIZE(rbcfg_commands); i++) {
+ const struct rbcfg_command *cmd;
+ cmd = &rbcfg_commands[i];
+
+ len = snprintf(buf, sizeof(buf), "%s", cmd->usage);
+ buf[len] = '\0';
+ fprintf(stderr, "%s\n", buf);
+ }
+
+ fprintf(stderr, "\nConfiguration options:\n");
+ for (i = 0; i < ARRAY_SIZE(rbcfg_envs); i++) {
+ const struct rbcfg_env *env;
+ int j;
+
+ env = &rbcfg_envs[i];
+ fprintf(stderr, "\n%s:\n", env->name);
+ for (j = 0; j < env->num_values; j++) {
+ const struct rbcfg_value *v = &env->values[j];
+ fprintf(stderr, "\t%-12s %s\n", v->name, v->desc);
+ }
+ }
+ fprintf(stderr, "\n");
+}
+
+int main(int argc, const char *argv[])
+{
+ const struct rbcfg_command *cmd = NULL;
+ int ret;
+ int i;
+
+ rbcfg_name = (char *) argv[0];
+
+ if (argc < 2) {
+ usage();
+ return EXIT_FAILURE;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(rbcfg_commands); i++) {
+ if (strcmp(rbcfg_commands[i].command, argv[1]) == 0) {
+ cmd = &rbcfg_commands[i];
+ break;
+ }
+ }
+
+ if (cmd == NULL) {
+ fprintf(stderr, "unknown command '%s'\n", argv[1]);
+ usage();
+ return EXIT_FAILURE;
+ }
+
+ argc -= 2;
+ argv += 2;
+
+ if (cmd->flags & CMD_FLAG_USES_CFG) {
+ ret = rbcfg_open();
+ if (ret)
+ return EXIT_FAILURE;
+ }
+
+ ret = cmd->exec(argc, argv);
+
+ if (cmd->flags & CMD_FLAG_USES_CFG)
+ rbcfg_close();
+
+ if (ret)
+ return EXIT_FAILURE;
+
+ return EXIT_SUCCESS;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 23:30:06 +0000