upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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767 lines
17 KiB
767 lines
17 KiB
/*
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* (C) Copyright 2000-2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <linux/mtd/mtd.h>
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#include "fw_env.h"
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typedef unsigned char uchar;
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#define CMD_GETENV "fw_printenv"
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#define CMD_SETENV "fw_setenv"
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typedef struct envdev_s {
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uchar devname[16]; /* Device name */
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ulong devoff; /* Device offset */
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ulong env_size; /* environment size */
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ulong erase_size; /* device erase size */
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} envdev_t;
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static envdev_t envdevices[2];
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static int curdev;
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#define DEVNAME(i) envdevices[(i)].devname
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#define DEVOFFSET(i) envdevices[(i)].devoff
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#define ENVSIZE(i) envdevices[(i)].env_size
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#define DEVESIZE(i) envdevices[(i)].erase_size
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#define CFG_ENV_SIZE ENVSIZE(curdev)
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#define ENV_SIZE getenvsize()
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typedef struct environment_s {
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ulong crc; /* CRC32 over data bytes */
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uchar flags; /* active or obsolete */
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uchar *data;
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} env_t;
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static env_t environment;
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static int HaveRedundEnv = 0;
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static uchar active_flag = 1;
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static uchar obsolete_flag = 0;
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#define XMK_STR(x) #x
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#define MK_STR(x) XMK_STR(x)
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static uchar default_environment[] = {
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#if defined(CONFIG_BOOTARGS)
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"bootargs=" CONFIG_BOOTARGS "\0"
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#endif
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#if defined(CONFIG_BOOTCOMMAND)
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"bootcmd=" CONFIG_BOOTCOMMAND "\0"
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#endif
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#if defined(CONFIG_RAMBOOTCOMMAND)
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"ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
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#endif
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#if defined(CONFIG_NFSBOOTCOMMAND)
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"nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
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#endif
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#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
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"bootdelay=" MK_STR (CONFIG_BOOTDELAY) "\0"
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#endif
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#if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
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"baudrate=" MK_STR (CONFIG_BAUDRATE) "\0"
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#endif
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#ifdef CONFIG_LOADS_ECHO
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"loads_echo=" MK_STR (CONFIG_LOADS_ECHO) "\0"
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#endif
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#ifdef CONFIG_ETHADDR
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"ethaddr=" MK_STR (CONFIG_ETHADDR) "\0"
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#endif
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#ifdef CONFIG_ETH1ADDR
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"eth1addr=" MK_STR (CONFIG_ETH1ADDR) "\0"
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#endif
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#ifdef CONFIG_ETH2ADDR
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"eth2addr=" MK_STR (CONFIG_ETH2ADDR) "\0"
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#endif
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#ifdef CONFIG_ETHPRIME
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"ethprime=" CONFIG_ETHPRIME "\0"
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#endif
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#ifdef CONFIG_IPADDR
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"ipaddr=" MK_STR (CONFIG_IPADDR) "\0"
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#endif
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#ifdef CONFIG_SERVERIP
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"serverip=" MK_STR (CONFIG_SERVERIP) "\0"
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#endif
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#ifdef CFG_AUTOLOAD
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"autoload=" CFG_AUTOLOAD "\0"
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#endif
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#ifdef CONFIG_ROOTPATH
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"rootpath=" MK_STR (CONFIG_ROOTPATH) "\0"
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#endif
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#ifdef CONFIG_GATEWAYIP
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"gatewayip=" MK_STR (CONFIG_GATEWAYIP) "\0"
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#endif
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#ifdef CONFIG_NETMASK
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"netmask=" MK_STR (CONFIG_NETMASK) "\0"
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#endif
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#ifdef CONFIG_HOSTNAME
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"hostname=" MK_STR (CONFIG_HOSTNAME) "\0"
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#endif
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#ifdef CONFIG_BOOTFILE
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"bootfile=" MK_STR (CONFIG_BOOTFILE) "\0"
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#endif
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#ifdef CONFIG_LOADADDR
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"loadaddr=" MK_STR (CONFIG_LOADADDR) "\0"
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#endif
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#ifdef CONFIG_PREBOOT
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"preboot=" CONFIG_PREBOOT "\0"
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#endif
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#ifdef CONFIG_CLOCKS_IN_MHZ
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"clocks_in_mhz=" "1" "\0"
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#endif
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#if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
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"pcidelay=" MK_STR (CONFIG_PCI_BOOTDELAY) "\0"
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#endif
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#ifdef CONFIG_EXTRA_ENV_SETTINGS
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CONFIG_EXTRA_ENV_SETTINGS
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#endif
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"\0" /* Termimate env_t data with 2 NULs */
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};
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static int flash_io (int mode);
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static uchar *envmatch (uchar * s1, uchar * s2);
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static int env_init (void);
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static int parse_config (void);
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#if defined(CONFIG_FILE)
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static int get_config (char *);
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#endif
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static inline ulong getenvsize (void)
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{
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ulong rc = CFG_ENV_SIZE - sizeof (long);
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if (HaveRedundEnv)
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rc -= sizeof (char);
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return rc;
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}
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/*
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* Search the environment for a variable.
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* Return the value, if found, or NULL, if not found.
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*/
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unsigned char *fw_getenv (unsigned char *name)
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{
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uchar *env, *nxt;
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if (env_init ())
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return (NULL);
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for (env = environment.data; *env; env = nxt + 1) {
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uchar *val;
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for (nxt = env; *nxt; ++nxt) {
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if (nxt >= &environment.data[ENV_SIZE]) {
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fprintf (stderr, "## Error: "
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"environment not terminated\n");
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return (NULL);
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}
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}
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val = envmatch (name, env);
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if (!val)
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continue;
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return (val);
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}
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return (NULL);
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}
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/*
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* Print the current definition of one, or more, or all
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* environment variables
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*/
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void fw_printenv (int argc, char *argv[])
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{
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uchar *env, *nxt;
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int i, n_flag;
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if (env_init ())
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return;
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if (argc == 1) { /* Print all env variables */
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for (env = environment.data; *env; env = nxt + 1) {
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for (nxt = env; *nxt; ++nxt) {
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if (nxt >= &environment.data[ENV_SIZE]) {
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fprintf (stderr, "## Error: "
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"environment not terminated\n");
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return;
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}
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}
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printf ("%s\n", env);
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}
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return;
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}
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if (strcmp (argv[1], "-n") == 0) {
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n_flag = 1;
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++argv;
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--argc;
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if (argc != 2) {
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fprintf (stderr, "## Error: "
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"`-n' option requires exactly one argument\n");
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return;
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}
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} else {
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n_flag = 0;
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}
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for (i = 1; i < argc; ++i) { /* print single env variables */
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uchar *name = argv[i];
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uchar *val = NULL;
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for (env = environment.data; *env; env = nxt + 1) {
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for (nxt = env; *nxt; ++nxt) {
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if (nxt >= &environment.data[ENV_SIZE]) {
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fprintf (stderr, "## Error: "
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"environment not terminated\n");
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return;
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}
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}
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val = envmatch (name, env);
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if (val) {
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if (!n_flag) {
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fputs (name, stdout);
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putc ('=', stdout);
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}
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puts (val);
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break;
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}
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}
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if (!val)
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fprintf (stderr, "## Error: \"%s\" not defined\n", name);
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}
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}
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/*
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* Deletes or sets environment variables. Returns errno style error codes:
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* 0 - OK
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* EINVAL - need at least 1 argument
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* EROFS - certain variables ("ethaddr", "serial#") cannot be
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* modified or deleted
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*
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*/
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int fw_setenv (int argc, char *argv[])
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{
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int i, len;
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uchar *env, *nxt;
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uchar *oldval = NULL;
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uchar *name;
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if (argc < 2) {
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return (EINVAL);
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}
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if (env_init ())
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return (errno);
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name = argv[1];
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/*
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* search if variable with this name already exists
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*/
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for (nxt = env = environment.data; *env; env = nxt + 1) {
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for (nxt = env; *nxt; ++nxt) {
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if (nxt >= &environment.data[ENV_SIZE]) {
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fprintf (stderr, "## Error: "
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"environment not terminated\n");
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return (EINVAL);
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}
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}
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if ((oldval = envmatch (name, env)) != NULL)
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break;
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}
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/*
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* Delete any existing definition
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*/
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if (oldval) {
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/*
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* Ethernet Address and serial# can be set only once
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*/
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if ((strcmp (name, "ethaddr") == 0) ||
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(strcmp (name, "serial#") == 0)) {
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fprintf (stderr, "Can't overwrite \"%s\"\n", name);
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return (EROFS);
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}
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if (*++nxt == '\0') {
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*env = '\0';
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} else {
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for (;;) {
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*env = *nxt++;
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if ((*env == '\0') && (*nxt == '\0'))
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break;
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++env;
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}
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}
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*++env = '\0';
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}
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/* Delete only ? */
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if (argc < 3)
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goto WRITE_FLASH;
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/*
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* Append new definition at the end
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*/
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for (env = environment.data; *env || *(env + 1); ++env);
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if (env > environment.data)
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++env;
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/*
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* Overflow when:
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* "name" + "=" + "val" +"\0\0" > CFG_ENV_SIZE - (env-environment)
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*/
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len = strlen (name) + 2;
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/* add '=' for first arg, ' ' for all others */
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for (i = 2; i < argc; ++i) {
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len += strlen (argv[i]) + 1;
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}
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if (len > (&environment.data[ENV_SIZE] - env)) {
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fprintf (stderr,
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"Error: environment overflow, \"%s\" deleted\n",
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name);
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return (-1);
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}
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while ((*env = *name++) != '\0')
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env++;
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for (i = 2; i < argc; ++i) {
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uchar *val = argv[i];
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*env = (i == 2) ? '=' : ' ';
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while ((*++env = *val++) != '\0');
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}
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/* end is marked with double '\0' */
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*++env = '\0';
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WRITE_FLASH:
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/* Update CRC */
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environment.crc = crc32 (0, environment.data, ENV_SIZE);
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/* write environment back to flash */
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if (flash_io (O_RDWR)) {
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fprintf (stderr, "Error: can't write fw_env to flash\n");
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return (-1);
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}
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return (0);
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}
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static int flash_io (int mode)
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{
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int fd, fdr, rc, otherdev, len, resid;
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erase_info_t erase;
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char *data = NULL;
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if ((fd = open (DEVNAME (curdev), mode)) < 0) {
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fprintf (stderr,
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"Can't open %s: %s\n",
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DEVNAME (curdev), strerror (errno));
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return (-1);
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}
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len = sizeof (environment.crc);
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if (HaveRedundEnv) {
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len += sizeof (environment.flags);
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}
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if (mode == O_RDWR) {
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if (HaveRedundEnv) {
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/* switch to next partition for writing */
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otherdev = !curdev;
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if ((fdr = open (DEVNAME (otherdev), mode)) < 0) {
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fprintf (stderr,
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"Can't open %s: %s\n",
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DEVNAME (otherdev),
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strerror (errno));
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return (-1);
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}
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} else {
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otherdev = curdev;
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fdr = fd;
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}
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printf ("Unlocking flash...\n");
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erase.length = DEVESIZE (otherdev);
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erase.start = DEVOFFSET (otherdev);
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ioctl (fdr, MEMUNLOCK, &erase);
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if (HaveRedundEnv) {
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erase.length = DEVESIZE (curdev);
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erase.start = DEVOFFSET (curdev);
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ioctl (fd, MEMUNLOCK, &erase);
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environment.flags = active_flag;
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}
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printf ("Done\n");
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resid = DEVESIZE (otherdev) - CFG_ENV_SIZE;
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if (resid) {
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if ((data = malloc (resid)) == NULL) {
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fprintf (stderr,
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"Cannot malloc %d bytes: %s\n",
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resid,
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strerror (errno));
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return (-1);
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}
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if (lseek (fdr, DEVOFFSET (otherdev) + CFG_ENV_SIZE, SEEK_SET)
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== -1) {
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fprintf (stderr, "seek error on %s: %s\n",
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DEVNAME (otherdev),
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strerror (errno));
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return (-1);
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}
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if ((rc = read (fdr, data, resid)) != resid) {
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fprintf (stderr,
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"read error on %s: %s\n",
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DEVNAME (otherdev),
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strerror (errno));
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return (-1);
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}
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}
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printf ("Erasing old environment...\n");
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erase.length = DEVESIZE (otherdev);
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erase.start = DEVOFFSET (otherdev);
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if (ioctl (fdr, MEMERASE, &erase) != 0) {
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fprintf (stderr, "MTD erase error on %s: %s\n",
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DEVNAME (otherdev),
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strerror (errno));
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return (-1);
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}
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printf ("Done\n");
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printf ("Writing environment to %s...\n", DEVNAME (otherdev));
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if (lseek (fdr, DEVOFFSET (otherdev), SEEK_SET) == -1) {
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fprintf (stderr,
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"seek error on %s: %s\n",
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DEVNAME (otherdev), strerror (errno));
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return (-1);
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}
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if (write (fdr, &environment, len) != len) {
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fprintf (stderr,
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"CRC write error on %s: %s\n",
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DEVNAME (otherdev), strerror (errno));
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return (-1);
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}
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if (write (fdr, environment.data, ENV_SIZE) != ENV_SIZE) {
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fprintf (stderr,
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"Write error on %s: %s\n",
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DEVNAME (otherdev), strerror (errno));
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return (-1);
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}
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if (resid) {
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if (write (fdr, data, resid) != resid) {
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fprintf (stderr,
|
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"write error on %s: %s\n",
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DEVNAME (curdev), strerror (errno));
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return (-1);
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}
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free (data);
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}
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if (HaveRedundEnv) {
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/* change flag on current active env partition */
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if (lseek (fd, DEVOFFSET (curdev) + sizeof (ulong), SEEK_SET)
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|
== -1) {
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|
fprintf (stderr, "seek error on %s: %s\n",
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|
DEVNAME (curdev), strerror (errno));
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return (-1);
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}
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if (write (fd, &obsolete_flag, sizeof (obsolete_flag)) !=
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sizeof (obsolete_flag)) {
|
|
fprintf (stderr,
|
|
"Write error on %s: %s\n",
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DEVNAME (curdev), strerror (errno));
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return (-1);
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}
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}
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printf ("Done\n");
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printf ("Locking ...\n");
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erase.length = DEVESIZE (otherdev);
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erase.start = DEVOFFSET (otherdev);
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ioctl (fdr, MEMLOCK, &erase);
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if (HaveRedundEnv) {
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erase.length = DEVESIZE (curdev);
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erase.start = DEVOFFSET (curdev);
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ioctl (fd, MEMLOCK, &erase);
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if (close (fdr)) {
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fprintf (stderr,
|
|
"I/O error on %s: %s\n",
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DEVNAME (otherdev),
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strerror (errno));
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return (-1);
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}
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}
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printf ("Done\n");
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} else {
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|
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if (lseek (fd, DEVOFFSET (curdev), SEEK_SET) == -1) {
|
|
fprintf (stderr,
|
|
"seek error on %s: %s\n",
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DEVNAME (curdev), strerror (errno));
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return (-1);
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}
|
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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");
|
|
environment.data = default_environment;
|
|
free (addr1);
|
|
}
|
|
} 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");
|
|
environment.data = default_environment;
|
|
curdev = 0;
|
|
free (addr2);
|
|
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 (2), 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
|
|
|