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-rw-r--r--tools/env/fw_env.c768
1 files changed, 0 insertions, 768 deletions
diff --git a/tools/env/fw_env.c b/tools/env/fw_env.c
deleted file mode 100644
index f723b5bca1..0000000000
--- a/tools/env/fw_env.c
+++ /dev/null
@@ -1,768 +0,0 @@
-/*
- * (C) Copyright 2000-2003
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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 <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <linux/mtd/mtd.h>
-#include "fw_env.h"
-
-typedef unsigned char uchar;
-
-#define CMD_GETENV "fw_printenv"
-#define CMD_SETENV "fw_setenv"
-
-typedef struct envdev_s {
- uchar devname[16]; /* Device name */
- ulong devoff; /* Device offset */
- ulong env_size; /* environment size */
- ulong erase_size; /* device erase size */
-} envdev_t;
-
-static envdev_t envdevices[2];
-static int curdev;
-
-#define DEVNAME(i) envdevices[(i)].devname
-#define DEVOFFSET(i) envdevices[(i)].devoff
-#define ENVSIZE(i) envdevices[(i)].env_size
-#define DEVESIZE(i) envdevices[(i)].erase_size
-
-#define CFG_ENV_SIZE ENVSIZE(curdev)
-
-#define ENV_SIZE getenvsize()
-
-typedef struct environment_s {
- ulong crc; /* CRC32 over data bytes */
- uchar flags; /* active or obsolete */
- uchar *data;
-} env_t;
-
-static env_t environment;
-
-static int HaveRedundEnv = 0;
-
-static uchar active_flag = 1;
-static uchar obsolete_flag = 0;
-
-
-#define XMK_STR(x) #x
-#define MK_STR(x) XMK_STR(x)
-
-static uchar default_environment[] = {
-#if defined(CONFIG_BOOTARGS)
- "bootargs=" CONFIG_BOOTARGS "\0"
-#endif
-#if defined(CONFIG_BOOTCOMMAND)
- "bootcmd=" CONFIG_BOOTCOMMAND "\0"
-#endif
-#if defined(CONFIG_RAMBOOTCOMMAND)
- "ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
-#endif
-#if defined(CONFIG_NFSBOOTCOMMAND)
- "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
-#endif
-#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
- "bootdelay=" MK_STR (CONFIG_BOOTDELAY) "\0"
-#endif
-#if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
- "baudrate=" MK_STR (CONFIG_BAUDRATE) "\0"
-#endif
-#ifdef CONFIG_LOADS_ECHO
- "loads_echo=" MK_STR (CONFIG_LOADS_ECHO) "\0"
-#endif
-#ifdef CONFIG_ETHADDR
- "ethaddr=" MK_STR (CONFIG_ETHADDR) "\0"
-#endif
-#ifdef CONFIG_ETH1ADDR
- "eth1addr=" MK_STR (CONFIG_ETH1ADDR) "\0"
-#endif
-#ifdef CONFIG_ETH2ADDR
- "eth2addr=" MK_STR (CONFIG_ETH2ADDR) "\0"
-#endif
-#ifdef CONFIG_ETH3ADDR
- "eth3addr=" MK_STR (CONFIG_ETH3ADDR) "\0"
-#endif
-#ifdef CONFIG_ETHPRIME
- "ethprime=" CONFIG_ETHPRIME "\0"
-#endif
-#ifdef CONFIG_IPADDR
- "ipaddr=" MK_STR (CONFIG_IPADDR) "\0"
-#endif
-#ifdef CONFIG_SERVERIP
- "serverip=" MK_STR (CONFIG_SERVERIP) "\0"
-#endif
-#ifdef CFG_AUTOLOAD
- "autoload=" CFG_AUTOLOAD "\0"
-#endif
-#ifdef CONFIG_ROOTPATH
- "rootpath=" MK_STR (CONFIG_ROOTPATH) "\0"
-#endif
-#ifdef CONFIG_GATEWAYIP
- "gatewayip=" MK_STR (CONFIG_GATEWAYIP) "\0"
-#endif
-#ifdef CONFIG_NETMASK
- "netmask=" MK_STR (CONFIG_NETMASK) "\0"
-#endif
-#ifdef CONFIG_HOSTNAME
- "hostname=" MK_STR (CONFIG_HOSTNAME) "\0"
-#endif
-#ifdef CONFIG_BOOTFILE
- "bootfile=" MK_STR (CONFIG_BOOTFILE) "\0"
-#endif
-#ifdef CONFIG_LOADADDR
- "loadaddr=" MK_STR (CONFIG_LOADADDR) "\0"
-#endif
-#ifdef CONFIG_PREBOOT
- "preboot=" CONFIG_PREBOOT "\0"
-#endif
-#ifdef CONFIG_CLOCKS_IN_MHZ
- "clocks_in_mhz=" "1" "\0"
-#endif
-#if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
- "pcidelay=" MK_STR (CONFIG_PCI_BOOTDELAY) "\0"
-#endif
-#ifdef CONFIG_EXTRA_ENV_SETTINGS
- CONFIG_EXTRA_ENV_SETTINGS
-#endif
- "\0" /* Termimate env_t data with 2 NULs */
-};
-
-static int flash_io (int mode);
-static uchar *envmatch (uchar * s1, uchar * s2);
-static int env_init (void);
-static int parse_config (void);
-
-#if defined(CONFIG_FILE)
-static int get_config (char *);
-#endif
-static inline ulong getenvsize (void)
-{
- ulong rc = CFG_ENV_SIZE - sizeof (long);
-
- if (HaveRedundEnv)
- rc -= sizeof (char);
- return rc;
-}
-
-/*
- * Search the environment for a variable.
- * Return the value, if found, or NULL, if not found.
- */
-unsigned char *fw_getenv (unsigned char *name)
-{
- uchar *env, *nxt;
-
- if (env_init ())
- return (NULL);
-
- for (env = environment.data; *env; env = nxt + 1) {
- uchar *val;
-
- for (nxt = env; *nxt; ++nxt) {
- if (nxt >= &environment.data[ENV_SIZE]) {
- fprintf (stderr, "## Error: "
- "environment not terminated\n");
- return (NULL);
- }
- }
- val = envmatch (name, env);
- if (!val)
- continue;
- return (val);
- }
- return (NULL);
-}
-
-/*
- * Print the current definition of one, or more, or all
- * environment variables
- */
-void fw_printenv (int argc, char *argv[])
-{
- uchar *env, *nxt;
- int i, n_flag;
-
- if (env_init ())
- return;
-
- if (argc == 1) { /* Print all env variables */
- for (env = environment.data; *env; env = nxt + 1) {
- for (nxt = env; *nxt; ++nxt) {
- if (nxt >= &environment.data[ENV_SIZE]) {
- fprintf (stderr, "## Error: "
- "environment not terminated\n");
- return;
- }
- }
-
- printf ("%s\n", env);
- }
- return;
- }
-
- if (strcmp (argv[1], "-n") == 0) {
- n_flag = 1;
- ++argv;
- --argc;
- if (argc != 2) {
- fprintf (stderr, "## Error: "
- "`-n' option requires exactly one argument\n");
- return;
- }
- } else {
- n_flag = 0;
- }
-
- for (i = 1; i < argc; ++i) { /* print single env variables */
- uchar *name = argv[i];
- uchar *val = NULL;
-
- for (env = environment.data; *env; env = nxt + 1) {
-
- for (nxt = env; *nxt; ++nxt) {
- if (nxt >= &environment.data[ENV_SIZE]) {
- fprintf (stderr, "## Error: "
- "environment not terminated\n");
- return;
- }
- }
- val = envmatch (name, env);
- if (val) {
- if (!n_flag) {
- fputs (name, stdout);
- putc ('=', stdout);
- }
- puts (val);
- break;
- }
- }
- if (!val)
- fprintf (stderr, "## Error: \"%s\" not defined\n", name);
- }
-}
-
-/*
- * Deletes or sets environment variables. Returns errno style error codes:
- * 0 - OK
- * EINVAL - need at least 1 argument
- * EROFS - certain variables ("ethaddr", "serial#") cannot be
- * modified or deleted
- *
- */
-int fw_setenv (int argc, char *argv[])
-{
- int i, len;
- uchar *env, *nxt;
- uchar *oldval = NULL;
- uchar *name;
-
- if (argc < 2) {
- return (EINVAL);
- }
-
- if (env_init ())
- return (errno);
-
- name = argv[1];
-
- /*
- * search if variable with this name already exists
- */
- for (nxt = env = environment.data; *env; env = nxt + 1) {
- for (nxt = env; *nxt; ++nxt) {
- if (nxt >= &environment.data[ENV_SIZE]) {
- fprintf (stderr, "## Error: "
- "environment not terminated\n");
- return (EINVAL);
- }
- }
- if ((oldval = envmatch (name, env)) != NULL)
- break;
- }
-
- /*
- * Delete any existing definition
- */
- if (oldval) {
- /*
- * Ethernet Address and serial# can be set only once
- */
- if ((strcmp (name, "ethaddr") == 0) ||
- (strcmp (name, "serial#") == 0)) {
- fprintf (stderr, "Can't overwrite \"%s\"\n", name);
- return (EROFS);
- }
-
- if (*++nxt == '\0') {
- *env = '\0';
- } else {
- for (;;) {
- *env = *nxt++;
- if ((*env == '\0') && (*nxt == '\0'))
- break;
- ++env;
- }
- }
- *++env = '\0';
- }
-
- /* Delete only ? */
- if (argc < 3)
- goto WRITE_FLASH;
-
- /*
- * Append new definition at the end
- */
- for (env = environment.data; *env || *(env + 1); ++env);
- if (env > environment.data)
- ++env;
- /*
- * Overflow when:
- * "name" + "=" + "val" +"\0\0" > CFG_ENV_SIZE - (env-environment)
- */
- len = strlen (name) + 2;
- /* add '=' for first arg, ' ' for all others */
- for (i = 2; i < argc; ++i) {
- len += strlen (argv[i]) + 1;
- }
- if (len > (&environment.data[ENV_SIZE] - env)) {
- fprintf (stderr,
- "Error: environment overflow, \"%s\" deleted\n",
- name);
- return (-1);
- }
- while ((*env = *name++) != '\0')
- env++;
- for (i = 2; i < argc; ++i) {
- uchar *val = argv[i];
-
- *env = (i == 2) ? '=' : ' ';
- while ((*++env = *val++) != '\0');
- }
-
- /* end is marked with double '\0' */
- *++env = '\0';
-
- WRITE_FLASH:
-
- /* Update CRC */
- environment.crc = crc32 (0, environment.data, ENV_SIZE);
-
- /* write environment back to flash */
- if (flash_io (O_RDWR)) {
- fprintf (stderr, "Error: can't write fw_env to flash\n");
- return (-1);
- }
-
- return (0);
-}
-
-static int flash_io (int mode)
-{
- int fd, fdr, rc, otherdev, len, resid;
- erase_info_t erase;
- char *data = NULL;
-
- if ((fd = open (DEVNAME (curdev), mode)) < 0) {
- fprintf (stderr,
- "Can't open %s: %s\n",
- DEVNAME (curdev), strerror (errno));
- return (-1);
- }
-
- len = sizeof (environment.crc);
- if (HaveRedundEnv) {
- len += sizeof (environment.flags);
- }
-
- if (mode == O_RDWR) {
- if (HaveRedundEnv) {
- /* switch to next partition for writing */
- otherdev = !curdev;
- if ((fdr = open (DEVNAME (otherdev), mode)) < 0) {
- fprintf (stderr,
- "Can't open %s: %s\n",
- DEVNAME (otherdev),
- strerror (errno));
- return (-1);
- }
- } else {
- otherdev = curdev;
- fdr = fd;
- }
- printf ("Unlocking flash...\n");
- erase.length = DEVESIZE (otherdev);
- erase.start = DEVOFFSET (otherdev);
- ioctl (fdr, MEMUNLOCK, &erase);
-
- if (HaveRedundEnv) {
- erase.length = DEVESIZE (curdev);
- erase.start = DEVOFFSET (curdev);
- ioctl (fd, MEMUNLOCK, &erase);
- environment.flags = active_flag;
- }
-
- printf ("Done\n");
- resid = DEVESIZE (otherdev) - CFG_ENV_SIZE;
- if (resid) {
- if ((data = malloc (resid)) == NULL) {
- fprintf (stderr,
- "Cannot malloc %d bytes: %s\n",
- resid,
- strerror (errno));
- return (-1);
- }
- if (lseek (fdr, DEVOFFSET (otherdev) + CFG_ENV_SIZE, SEEK_SET)
- == -1) {
- fprintf (stderr, "seek error on %s: %s\n",
- DEVNAME (otherdev),
- strerror (errno));
- return (-1);
- }
- if ((rc = read (fdr, data, resid)) != resid) {
- fprintf (stderr,
- "read error on %s: %s\n",
- DEVNAME (otherdev),
- strerror (errno));
- return (-1);
- }
- }
-
- printf ("Erasing old environment...\n");
-
- erase.length = DEVESIZE (otherdev);
- erase.start = DEVOFFSET (otherdev);
- if (ioctl (fdr, MEMERASE, &erase) != 0) {
- fprintf (stderr, "MTD erase error on %s: %s\n",
- DEVNAME (otherdev),
- strerror (errno));
- return (-1);
- }
-
- printf ("Done\n");
-
- printf ("Writing environment to %s...\n", DEVNAME (otherdev));
- if (lseek (fdr, DEVOFFSET (otherdev), SEEK_SET) == -1) {
- fprintf (stderr,
- "seek error on %s: %s\n",
- DEVNAME (otherdev), strerror (errno));
- return (-1);
- }
- if (write (fdr, &environment, len) != len) {
- fprintf (stderr,
- "CRC write error on %s: %s\n",
- DEVNAME (otherdev), strerror (errno));
- return (-1);
- }
- if (write (fdr, environment.data, ENV_SIZE) != ENV_SIZE) {
- fprintf (stderr,
- "Write error on %s: %s\n",
- DEVNAME (otherdev), strerror (errno));
- return (-1);
- }
- if (resid) {
- if (write (fdr, data, resid) != resid) {
- fprintf (stderr,
- "write error on %s: %s\n",
- DEVNAME (curdev), strerror (errno));
- return (-1);
- }
- free (data);
- }
- if (HaveRedundEnv) {
- /* change flag on current active env partition */
- if (lseek (fd, DEVOFFSET (curdev) + sizeof (ulong), SEEK_SET)
- == -1) {
- fprintf (stderr, "seek error on %s: %s\n",
- DEVNAME (curdev), strerror (errno));
- return (-1);
- }
- if (write (fd, &obsolete_flag, sizeof (obsolete_flag)) !=
- sizeof (obsolete_flag)) {
- fprintf (stderr,
- "Write error on %s: %s\n",
- DEVNAME (curdev), strerror (errno));
- return (-1);
- }
- }
- printf ("Done\n");
- printf ("Locking ...\n");
- erase.length = DEVESIZE (otherdev);
- erase.start = DEVOFFSET (otherdev);
- ioctl (fdr, MEMLOCK, &erase);
- if (HaveRedundEnv) {
- erase.length = DEVESIZE (curdev);
- erase.start = DEVOFFSET (curdev);
- ioctl (fd, MEMLOCK, &erase);
- if (close (fdr)) {
- fprintf (stderr,
- "I/O error on %s: %s\n",
- DEVNAME (otherdev),
- strerror (errno));
- return (-1);
- }
- }
- printf ("Done\n");
- } else {
-
- if (lseek (fd, DEVOFFSET (curdev), SEEK_SET) == -1) {
- fprintf (stderr,
- "seek error on %s: %s\n",
- DEVNAME (curdev), strerror (errno));
- return (-1);
- }
- if (read (fd, &environment, len) != len) {
- fprintf (stderr,
- "CRC read error on %s: %s\n",
- DEVNAME (curdev), strerror (errno));
- return (-1);
- }
- if ((rc = read (fd, environment.data, ENV_SIZE)) != ENV_SIZE) {
- fprintf (stderr,
- "Read error on %s: %s\n",
- DEVNAME (curdev), strerror (errno));
- return (-1);
- }
- }
-
- if (close (fd)) {
- fprintf (stderr,
- "I/O error on %s: %s\n",
- DEVNAME (curdev), strerror (errno));
- return (-1);
- }
-
- /* everything ok */
- return (0);
-}
-
-/*
- * s1 is either a simple 'name', or a 'name=value' pair.
- * s2 is a 'name=value' pair.
- * If the names match, return the value of s2, else NULL.
- */
-
-static uchar *envmatch (uchar * s1, uchar * s2)
-{
-
- while (*s1 == *s2++)
- if (*s1++ == '=')
- return (s2);
- if (*s1 == '\0' && *(s2 - 1) == '=')
- return (s2);
- return (NULL);
-}
-
-/*
- * Prevent confusion if running from erased flash memory
- */
-static int env_init (void)
-{
- int crc1, crc1_ok;
- uchar *addr1;
-
- int crc2, crc2_ok;
- uchar flag1, flag2, *addr2;
-
- if (parse_config ()) /* should fill envdevices */
- return 1;
-
- if ((addr1 = calloc (1, ENV_SIZE)) == NULL) {
- fprintf (stderr,
- "Not enough memory for environment (%ld bytes)\n",
- ENV_SIZE);
- return (errno);
- }
-
- /* read environment from FLASH to local buffer */
- environment.data = addr1;
- curdev = 0;
- if (flash_io (O_RDONLY)) {
- return (errno);
- }
-
- crc1_ok = ((crc1 = crc32 (0, environment.data, ENV_SIZE))
- == environment.crc);
- if (!HaveRedundEnv) {
- if (!crc1_ok) {
- fprintf (stderr,
- "Warning: Bad CRC, using default environment\n");
- memcpy(environment.data, default_environment, sizeof default_environment);
- }
- } else {
- flag1 = environment.flags;
-
- curdev = 1;
- if ((addr2 = calloc (1, ENV_SIZE)) == NULL) {
- fprintf (stderr,
- "Not enough memory for environment (%ld bytes)\n",
- ENV_SIZE);
- return (errno);
- }
- environment.data = addr2;
-
- if (flash_io (O_RDONLY)) {
- return (errno);
- }
-
- crc2_ok = ((crc2 = crc32 (0, environment.data, ENV_SIZE))
- == environment.crc);
- flag2 = environment.flags;
-
- if (crc1_ok && !crc2_ok) {
- environment.data = addr1;
- environment.flags = flag1;
- environment.crc = crc1;
- curdev = 0;
- free (addr2);
- } else if (!crc1_ok && crc2_ok) {
- environment.data = addr2;
- environment.flags = flag2;
- environment.crc = crc2;
- curdev = 1;
- free (addr1);
- } else if (!crc1_ok && !crc2_ok) {
- fprintf (stderr,
- "Warning: Bad CRC, using default environment\n");
- memcpy(environment.data, default_environment, sizeof default_environment);
- curdev = 0;
- free (addr1);
- } else if (flag1 == active_flag && flag2 == obsolete_flag) {
- environment.data = addr1;
- environment.flags = flag1;
- environment.crc = crc1;
- curdev = 0;
- free (addr2);
- } else if (flag1 == obsolete_flag && flag2 == active_flag) {
- environment.data = addr2;
- environment.flags = flag2;
- environment.crc = crc2;
- curdev = 1;
- free (addr1);
- } else if (flag1 == flag2) {
- environment.data = addr1;
- environment.flags = flag1;
- environment.crc = crc1;
- curdev = 0;
- free (addr2);
- } else if (flag1 == 0xFF) {
- environment.data = addr1;
- environment.flags = flag1;
- environment.crc = crc1;
- curdev = 0;
- free (addr2);
- } else if (flag2 == 0xFF) {
- environment.data = addr2;
- environment.flags = flag2;
- environment.crc = crc2;
- curdev = 1;
- free (addr1);
- }
- }
- return (0);
-}
-
-
-static int parse_config ()
-{
- struct stat st;
-
-#if defined(CONFIG_FILE)
- /* Fills in DEVNAME(), ENVSIZE(), DEVESIZE(). Or don't. */
- if (get_config (CONFIG_FILE)) {
- fprintf (stderr,
- "Cannot parse config file: %s\n", strerror (errno));
- return 1;
- }
-#else
- strcpy (DEVNAME (0), DEVICE1_NAME);
- DEVOFFSET (0) = DEVICE1_OFFSET;
- ENVSIZE (0) = ENV1_SIZE;
- DEVESIZE (0) = DEVICE1_ESIZE;
-#ifdef HAVE_REDUND
- strcpy (DEVNAME (1), DEVICE2_NAME);
- DEVOFFSET (1) = DEVICE2_OFFSET;
- ENVSIZE (1) = ENV2_SIZE;
- DEVESIZE (1) = DEVICE2_ESIZE;
- HaveRedundEnv = 1;
-#endif
-#endif
- if (stat (DEVNAME (0), &st)) {
- fprintf (stderr,
- "Cannot access MTD device %s: %s\n",
- DEVNAME (0), strerror (errno));
- return 1;
- }
-
- if (HaveRedundEnv && stat (DEVNAME (1), &st)) {
- fprintf (stderr,
- "Cannot access MTD device %s: %s\n",
- DEVNAME (1), strerror (errno));
- return 1;
- }
- return 0;
-}
-
-#if defined(CONFIG_FILE)
-static int get_config (char *fname)
-{
- FILE *fp;
- int i = 0;
- int rc;
- char dump[128];
-
- if ((fp = fopen (fname, "r")) == NULL) {
- return 1;
- }
-
- while ((i < 2) && ((rc = fscanf (fp, "%s %lx %lx %lx",
- DEVNAME (i),
- &DEVOFFSET (i),
- &ENVSIZE (i),
- &DEVESIZE (i) )) != EOF)) {
-
- /* Skip incomplete conversions and comment strings */
- if ((rc < 3) || (*DEVNAME (i) == '#')) {
- fgets (dump, sizeof (dump), fp); /* Consume till end */
- continue;
- }
-
- i++;
- }
- fclose (fp);
-
- HaveRedundEnv = i - 1;
- if (!i) { /* No valid entries found */
- errno = EINVAL;
- return 1;
- } else
- return 0;
-}
-#endif
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