313 lines
7.1 KiB
C
313 lines
7.1 KiB
C
/*
|
|
* (C) Copyright 2000-2002
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Andreas Heppel <aheppel@sysgo.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 <common.h>
|
|
#include <command.h>
|
|
#include <environment.h>
|
|
#include <linux/stddef.h>
|
|
#include <malloc.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#ifdef CONFIG_AMIGAONEG3SE
|
|
extern void enable_nvram(void);
|
|
extern void disable_nvram(void);
|
|
#endif
|
|
|
|
#undef DEBUG_ENV
|
|
#ifdef DEBUG_ENV
|
|
#define DEBUGF(fmt,args...) printf(fmt ,##args)
|
|
#else
|
|
#define DEBUGF(fmt,args...)
|
|
#endif
|
|
|
|
extern env_t *env_ptr;
|
|
|
|
extern void env_relocate_spec (void);
|
|
extern uchar env_get_char_spec(int);
|
|
|
|
static uchar env_get_char_init (int index);
|
|
|
|
/************************************************************************
|
|
* Default settings to be used when no valid environment is found
|
|
*/
|
|
#define XMK_STR(x) #x
|
|
#define MK_STR(x) XMK_STR(x)
|
|
|
|
uchar default_environment[] = {
|
|
#ifdef CONFIG_BOOTARGS
|
|
"bootargs=" CONFIG_BOOTARGS "\0"
|
|
#endif
|
|
#ifdef CONFIG_BOOTCOMMAND
|
|
"bootcmd=" CONFIG_BOOTCOMMAND "\0"
|
|
#endif
|
|
#ifdef CONFIG_RAMBOOTCOMMAND
|
|
"ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
|
|
#endif
|
|
#ifdef 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_ETH4ADDR
|
|
"eth4addr=" MK_STR(CONFIG_ETH4ADDR) "\0"
|
|
#endif
|
|
#ifdef CONFIG_ETH5ADDR
|
|
"eth5addr=" MK_STR(CONFIG_ETH5ADDR) "\0"
|
|
#endif
|
|
#ifdef CONFIG_IPADDR
|
|
"ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
|
|
#endif
|
|
#ifdef CONFIG_SERVERIP
|
|
"serverip=" MK_STR(CONFIG_SERVERIP) "\0"
|
|
#endif
|
|
#ifdef CONFIG_SYS_AUTOLOAD
|
|
"autoload=" CONFIG_SYS_AUTOLOAD "\0"
|
|
#endif
|
|
#ifdef CONFIG_PREBOOT
|
|
"preboot=" CONFIG_PREBOOT "\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_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"
|
|
};
|
|
|
|
#if defined(CONFIG_ENV_IS_IN_NAND) /* Environment is in Nand Flash */ \
|
|
|| defined(CONFIG_ENV_IS_IN_SPI_FLASH)
|
|
int default_environment_size = sizeof(default_environment);
|
|
#endif
|
|
|
|
void env_crc_update (void)
|
|
{
|
|
env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE);
|
|
}
|
|
|
|
static uchar env_get_char_init (int index)
|
|
{
|
|
uchar c;
|
|
|
|
/* if crc was bad, use the default environment */
|
|
if (gd->env_valid)
|
|
{
|
|
c = env_get_char_spec(index);
|
|
} else {
|
|
c = default_environment[index];
|
|
}
|
|
|
|
return (c);
|
|
}
|
|
|
|
#ifdef CONFIG_AMIGAONEG3SE
|
|
uchar env_get_char_memory (int index)
|
|
{
|
|
uchar retval;
|
|
enable_nvram();
|
|
if (gd->env_valid) {
|
|
retval = ( *((uchar *)(gd->env_addr + index)) );
|
|
} else {
|
|
retval = ( default_environment[index] );
|
|
}
|
|
disable_nvram();
|
|
return retval;
|
|
}
|
|
#else
|
|
uchar env_get_char_memory (int index)
|
|
{
|
|
if (gd->env_valid) {
|
|
return ( *((uchar *)(gd->env_addr + index)) );
|
|
} else {
|
|
return ( default_environment[index] );
|
|
}
|
|
}
|
|
#endif
|
|
|
|
uchar env_get_char (int index)
|
|
{
|
|
uchar c;
|
|
|
|
/* if relocated to RAM */
|
|
if (gd->flags & GD_FLG_RELOC)
|
|
c = env_get_char_memory(index);
|
|
else
|
|
c = env_get_char_init(index);
|
|
|
|
return (c);
|
|
}
|
|
|
|
uchar *env_get_addr (int index)
|
|
{
|
|
if (gd->env_valid) {
|
|
return ( ((uchar *)(gd->env_addr + index)) );
|
|
} else {
|
|
return (&default_environment[index]);
|
|
}
|
|
}
|
|
|
|
void set_default_env(void)
|
|
{
|
|
if (sizeof(default_environment) > ENV_SIZE) {
|
|
puts ("*** Error - default environment is too large\n\n");
|
|
return;
|
|
}
|
|
|
|
memset(env_ptr, 0, sizeof(env_t));
|
|
memcpy(env_ptr->data, default_environment,
|
|
sizeof(default_environment));
|
|
#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
|
|
env_ptr->flags = 0xFF;
|
|
#endif
|
|
env_crc_update ();
|
|
gd->env_valid = 1;
|
|
}
|
|
|
|
void env_relocate (void)
|
|
{
|
|
DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__,__LINE__,
|
|
gd->reloc_off);
|
|
|
|
#ifdef CONFIG_AMIGAONEG3SE
|
|
enable_nvram();
|
|
#endif
|
|
|
|
#ifdef ENV_IS_EMBEDDED
|
|
/*
|
|
* The environment buffer is embedded with the text segment,
|
|
* just relocate the environment pointer
|
|
*/
|
|
env_ptr = (env_t *)((ulong)env_ptr + gd->reloc_off);
|
|
DEBUGF ("%s[%d] embedded ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
|
|
#else
|
|
/*
|
|
* We must allocate a buffer for the environment
|
|
*/
|
|
env_ptr = (env_t *)malloc (CONFIG_ENV_SIZE);
|
|
DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
|
|
#endif
|
|
|
|
if (gd->env_valid == 0) {
|
|
#if defined(CONFIG_GTH) || defined(CONFIG_ENV_IS_NOWHERE) /* Environment not changable */
|
|
puts ("Using default environment\n\n");
|
|
#else
|
|
puts ("*** Warning - bad CRC, using default environment\n\n");
|
|
show_boot_progress (-60);
|
|
#endif
|
|
set_default_env();
|
|
}
|
|
else {
|
|
env_relocate_spec ();
|
|
}
|
|
gd->env_addr = (ulong)&(env_ptr->data);
|
|
|
|
#ifdef CONFIG_AMIGAONEG3SE
|
|
disable_nvram();
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_AUTO_COMPLETE
|
|
int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf)
|
|
{
|
|
int i, nxt, len, vallen, found;
|
|
const char *lval, *rval;
|
|
|
|
found = 0;
|
|
cmdv[0] = NULL;
|
|
|
|
len = strlen(var);
|
|
/* now iterate over the variables and select those that match */
|
|
for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
|
|
|
|
for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
|
|
;
|
|
|
|
lval = (char *)env_get_addr(i);
|
|
rval = strchr(lval, '=');
|
|
if (rval != NULL) {
|
|
vallen = rval - lval;
|
|
rval++;
|
|
} else
|
|
vallen = strlen(lval);
|
|
|
|
if (len > 0 && (vallen < len || memcmp(lval, var, len) != 0))
|
|
continue;
|
|
|
|
if (found >= maxv - 2 || bufsz < vallen + 1) {
|
|
cmdv[found++] = "...";
|
|
break;
|
|
}
|
|
cmdv[found++] = buf;
|
|
memcpy(buf, lval, vallen); buf += vallen; bufsz -= vallen;
|
|
*buf++ = '\0'; bufsz--;
|
|
}
|
|
|
|
cmdv[found] = NULL;
|
|
return found;
|
|
}
|
|
#endif
|