mirror of
https://github.com/AsahiLinux/u-boot
synced 2025-02-17 22:49:02 +00:00
Initial revision
This commit is contained in:
wdenk
parent
32fe2871cb
commit
a68d3ed0ac
1 changed files with 535 additions and 0 deletions
535
common/cmd_nvedit.c
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535
common/cmd_nvedit.c
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/*
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* (C) Copyright 2000-2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Andreas Heppel <aheppel@sysgo.de>
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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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/**************************************************************************
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*
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* Support for persistent environment data
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*
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* The "environment" is stored as a list of '\0' terminated
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* "name=value" strings. The end of the list is marked by a double
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* '\0'. New entries are always added at the end. Deleting an entry
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* shifts the remaining entries to the front. Replacing an entry is a
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* combination of deleting the old value and adding the new one.
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*
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* The environment is preceeded by a 32 bit CRC over the data part.
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*
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**************************************************************************
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*/
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#include <common.h>
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#include <command.h>
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#include <environment.h>
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#include <cmd_nvedit.h>
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#include <linux/stddef.h>
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#include <asm/byteorder.h>
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#if (CONFIG_COMMANDS & CFG_CMD_NET)
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#include <net.h>
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#endif
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#if !defined(CFG_ENV_IS_IN_NVRAM) && !defined(CFG_ENV_IS_IN_EEPROM) && !defined(CFG_ENV_IS_IN_FLASH) && !defined(CFG_ENV_IS_NOWHERE)
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# error Define one of CFG_ENV_IS_IN_NVRAM, CFG_ENV_IS_IN_EEPROM, CFG_ENV_IS_IN_FLASH, CFG_ENV_IS_NOWHERE
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#endif
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#define XMK_STR(x) #x
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#define MK_STR(x) XMK_STR(x)
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/************************************************************************
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************************************************************************/
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/* Function that returns a character from the environment */
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extern uchar (*env_get_char)(int);
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/* Function that returns a pointer to a value from the environment */
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/* (Only memory version supported / needed). */
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extern uchar *env_get_addr(int);
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/* Function that updates CRC of the enironment */
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extern void env_crc_update (void);
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/************************************************************************
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************************************************************************/
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static int envmatch (uchar *, int);
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/*
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* Table with supported baudrates (defined in config_xyz.h)
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*/
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static const unsigned long baudrate_table[] = CFG_BAUDRATE_TABLE;
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#define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
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/************************************************************************
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* Command interface: print one or all environment variables
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*/
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int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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int i, j, k, nxt;
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int rcode = 0;
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if (argc == 1) { /* Print all env variables */
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for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
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for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
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;
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for (k=i; k<nxt; ++k)
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putc(env_get_char(k));
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putc ('\n');
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if (ctrlc()) {
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puts ("\n ** Abort\n");
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return 1;
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}
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}
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printf("\nEnvironment size: %d/%d bytes\n", i, ENV_SIZE);
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return 0;
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}
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for (i=1; i<argc; ++i) { /* print single env variables */
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char *name = argv[i];
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k = -1;
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for (j=0; env_get_char(j) != '\0'; j=nxt+1) {
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for (nxt=j; env_get_char(nxt) != '\0'; ++nxt)
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;
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k = envmatch(name, j);
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if (k < 0) {
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continue;
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}
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puts (name);
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putc ('=');
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while (k < nxt)
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putc(env_get_char(k++));
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putc ('\n');
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break;
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}
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if (k < 0) {
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printf ("## Error: \"%s\" not defined\n", name);
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rcode ++;
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}
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}
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return rcode;
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}
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/************************************************************************
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* Set a new environment variable,
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* or replace or delete an existing one.
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*
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* This function will ONLY work with a in-RAM copy of the environment
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*/
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int _do_setenv (int flag, int argc, char *argv[])
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{
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DECLARE_GLOBAL_DATA_PTR;
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int i, len, oldval;
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int console = -1;
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uchar *env, *nxt = NULL;
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uchar *name;
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bd_t *bd = gd->bd;
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uchar *env_data = env_get_addr(0);
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if (!env_data) /* need copy in RAM */
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return 1;
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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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oldval = -1;
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for (env=env_data; *env; env=nxt+1) {
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for (nxt=env; *nxt; ++nxt)
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;
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if ((oldval = envmatch(name, env-env_data)) >= 0)
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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 >= 0) {
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#ifndef CONFIG_ENV_OVERWRITE
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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, "serial#") == 0) ||
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((strcmp (name, "ethaddr") == 0)
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#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
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&& (strcmp (env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0)
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#endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
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) ) {
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printf ("Can't overwrite \"%s\"\n", name);
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return 1;
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}
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#endif
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/* Check for console redirection */
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if (strcmp(name,"stdin") == 0) {
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console = stdin;
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} else if (strcmp(name,"stdout") == 0) {
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console = stdout;
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} else if (strcmp(name,"stderr") == 0) {
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console = stderr;
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}
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if (console != -1) {
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if (argc < 3) { /* Cannot delete it! */
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printf("Can't delete \"%s\"\n", name);
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return 1;
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}
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/* Try assigning specified device */
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if (console_assign (console, argv[2]) < 0)
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return 1;
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}
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/*
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* Switch to new baudrate if new baudrate is supported
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*/
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if (strcmp(argv[1],"baudrate") == 0) {
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int baudrate = simple_strtoul(argv[2], NULL, 10);
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int i;
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for (i=0; i<N_BAUDRATES; ++i) {
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if (baudrate == baudrate_table[i])
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break;
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}
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if (i == N_BAUDRATES) {
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printf ("## Baudrate %d bps not supported\n",
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baudrate);
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return 1;
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}
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printf ("## Switch baudrate to %d bps and press ENTER ...\n",
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baudrate);
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udelay(50000);
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gd->baudrate = baudrate;
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serial_setbrg ();
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udelay(50000);
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for (;;) {
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if (getc() == '\r')
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break;
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}
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}
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if (*++nxt == '\0') {
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if (env > env_data) {
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env--;
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} else {
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*env = '\0';
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}
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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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#ifdef CONFIG_NET_MULTI
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if (strncmp(name, "eth", 3) == 0) {
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char *end;
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int num = simple_strtoul(name+3, &end, 10);
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if (strcmp(end, "addr") == 0) {
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eth_set_enetaddr(num, argv[2]);
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}
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}
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#endif
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/* Delete only ? */
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if ((argc < 3) || argv[2] == NULL) {
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env_crc_update ();
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return 0;
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}
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/*
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* Append new definition at the end
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*/
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for (env=env_data; *env || *(env+1); ++env)
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;
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if (env > env_data)
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++env;
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/*
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* Overflow when:
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* "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data)
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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 > (&env_data[ENV_SIZE]-env)) {
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printf ("## Error: environment overflow, \"%s\" deleted\n", 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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char *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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}
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/* end is marked with double '\0' */
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*++env = '\0';
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/* Update CRC */
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env_crc_update ();
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/*
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* Some variables should be updated when the corresponding
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* entry in the enviornment is changed
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*/
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if (strcmp(argv[1],"ethaddr") == 0) {
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char *s = argv[2]; /* always use only one arg */
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char *e;
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for (i=0; i<6; ++i) {
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bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
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if (s) s = (*e) ? e+1 : e;
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}
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#ifdef CONFIG_NET_MULTI
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eth_set_enetaddr(0, argv[2]);
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#endif
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return 0;
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}
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if (strcmp(argv[1],"ipaddr") == 0) {
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char *s = argv[2]; /* always use only one arg */
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char *e;
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unsigned long addr;
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bd->bi_ip_addr = 0;
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for (addr=0, i=0; i<4; ++i) {
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ulong val = s ? simple_strtoul(s, &e, 10) : 0;
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addr <<= 8;
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addr |= (val & 0xFF);
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if (s) s = (*e) ? e+1 : e;
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||||
}
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bd->bi_ip_addr = htonl(addr);
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return 0;
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}
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||||
if (strcmp(argv[1],"loadaddr") == 0) {
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load_addr = simple_strtoul(argv[2], NULL, 16);
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return 0;
|
||||
}
|
||||
#if (CONFIG_COMMANDS & CFG_CMD_NET)
|
||||
if (strcmp(argv[1],"bootfile") == 0) {
|
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copy_filename (BootFile, argv[2], sizeof(BootFile));
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return 0;
|
||||
}
|
||||
#endif /* CFG_CMD_NET */
|
||||
return 0;
|
||||
}
|
||||
|
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void setenv (char *varname, char *varvalue)
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{
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||||
char *argv[4] = { "setenv", varname, varvalue, NULL };
|
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_do_setenv (0, 3, argv);
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}
|
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|
||||
int do_setenv ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
||||
{
|
||||
if (argc < 2) {
|
||||
printf ("Usage:\n%s\n", cmdtp->usage);
|
||||
return 1;
|
||||
}
|
||||
|
||||
return _do_setenv (flag, argc, argv);
|
||||
}
|
||||
|
||||
/************************************************************************
|
||||
* Prompt for environment variable
|
||||
*/
|
||||
|
||||
#if (CONFIG_COMMANDS & CFG_CMD_ASKENV)
|
||||
int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
||||
{
|
||||
extern char console_buffer[CFG_CBSIZE];
|
||||
char message[CFG_CBSIZE];
|
||||
int size = CFG_CBSIZE - 1;
|
||||
int len;
|
||||
char *local_args[4];
|
||||
|
||||
local_args[0] = argv[0];
|
||||
local_args[1] = argv[1];
|
||||
local_args[2] = NULL;
|
||||
local_args[3] = NULL;
|
||||
|
||||
if (argc < 2) {
|
||||
printf ("Usage:\n%s\n", cmdtp->usage);
|
||||
return 1;
|
||||
}
|
||||
/* Check the syntax */
|
||||
switch (argc) {
|
||||
case 1:
|
||||
printf ("Usage:\n%s\n", cmdtp->usage);
|
||||
return 1;
|
||||
|
||||
case 2: /* askenv envname */
|
||||
sprintf (message, "Please enter '%s':", argv[1]);
|
||||
break;
|
||||
|
||||
case 3: /* askenv envname size */
|
||||
sprintf (message, "Please enter '%s':", argv[1]);
|
||||
size = simple_strtoul (argv[2], NULL, 10);
|
||||
break;
|
||||
|
||||
default: /* askenv envname message1 ... messagen size */
|
||||
{
|
||||
int i;
|
||||
int pos = 0;
|
||||
|
||||
for (i = 2; i < argc - 1; i++) {
|
||||
if (pos) {
|
||||
message[pos++] = ' ';
|
||||
}
|
||||
strcpy (message+pos, argv[i]);
|
||||
pos += strlen(argv[i]);
|
||||
}
|
||||
message[pos] = '\0';
|
||||
size = simple_strtoul (argv[argc - 1], NULL, 10);
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
if (size >= CFG_CBSIZE)
|
||||
size = CFG_CBSIZE - 1;
|
||||
|
||||
if (size <= 0)
|
||||
return 1;
|
||||
|
||||
/* prompt for input */
|
||||
len = readline (message);
|
||||
|
||||
if (size < len)
|
||||
console_buffer[size] = '\0';
|
||||
|
||||
len = 2;
|
||||
if (console_buffer[0] != '\0') {
|
||||
local_args[2] = console_buffer;
|
||||
len = 3;
|
||||
}
|
||||
|
||||
/* Continue calling setenv code */
|
||||
return _do_setenv (flag, len, local_args);
|
||||
}
|
||||
#endif /* CFG_CMD_ASKENV */
|
||||
|
||||
/************************************************************************
|
||||
* Look up variable from environment,
|
||||
* return address of storage for that variable,
|
||||
* or NULL if not found
|
||||
*/
|
||||
|
||||
char *getenv (uchar *name)
|
||||
{
|
||||
int i, nxt;
|
||||
|
||||
for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
|
||||
int val;
|
||||
|
||||
for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
|
||||
if (nxt >= CFG_ENV_SIZE) {
|
||||
return (NULL);
|
||||
}
|
||||
}
|
||||
if ((val=envmatch(name, i)) < 0)
|
||||
continue;
|
||||
return (env_get_addr(val));
|
||||
}
|
||||
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
int getenv_r (uchar *name, uchar *buf, unsigned len)
|
||||
{
|
||||
int i, nxt;
|
||||
|
||||
for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
|
||||
int val, n;
|
||||
|
||||
for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
|
||||
if (nxt >= CFG_ENV_SIZE) {
|
||||
return (-1);
|
||||
}
|
||||
}
|
||||
if ((val=envmatch(name, i)) < 0)
|
||||
continue;
|
||||
/* found; copy out */
|
||||
n = 0;
|
||||
while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0')
|
||||
;
|
||||
if (len == n)
|
||||
*buf = '\0';
|
||||
return (n);
|
||||
}
|
||||
return (-1);
|
||||
}
|
||||
|
||||
#if defined(CFG_ENV_IS_IN_NVRAM) || defined(CFG_ENV_IS_IN_EEPROM) || \
|
||||
((CONFIG_COMMANDS & (CFG_CMD_ENV|CFG_CMD_FLASH)) == \
|
||||
(CFG_CMD_ENV|CFG_CMD_FLASH))
|
||||
int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
||||
{
|
||||
extern char * env_name_spec;
|
||||
|
||||
printf ("Saving Environment to %s...\n", env_name_spec);
|
||||
|
||||
return (saveenv() ? 1 : 0);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/************************************************************************
|
||||
* Match a name / name=value pair
|
||||
*
|
||||
* s1 is either a simple 'name', or a 'name=value' pair.
|
||||
* i2 is the environment index for a 'name2=value2' pair.
|
||||
* If the names match, return the index for the value2, else NULL.
|
||||
*/
|
||||
|
||||
static int
|
||||
envmatch (uchar *s1, int i2)
|
||||
{
|
||||
|
||||
while (*s1 == env_get_char(i2++))
|
||||
if (*s1++ == '=')
|
||||
return(i2);
|
||||
if (*s1 == '\0' && env_get_char(i2-1) == '=')
|
||||
return(i2);
|
||||
return(-1);
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue