/* * (C) Copyright 2000-2002 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH * Andreas Heppel * 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 #include #include #include #include #ifdef CONFIG_SHOW_BOOT_PROGRESS # include # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) #else # define SHOW_BOOT_PROGRESS(arg) #endif 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); uchar (*env_get_char)(int) = env_get_char_init; /************************************************************************ * 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_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_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(CFG_ENV_IS_IN_NAND) /* Environment is in Nand 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_addr (int index) { if (gd->env_valid) { return ( ((uchar *)(gd->env_addr + index)) ); } else { return (&default_environment[index]); } } /*======rockpzhang======*/ #include #include struct hsearch_data env_htab ; void set_default_env(const char *s) { int flags = 0; if (sizeof(default_environment) > ENV_SIZE) { puts("*** Error - default environment is too large\n\n"); return; } if (s) { if (*s == '!') { printf("*** Warning - %s, " "using default environment\n\n", s + 1); } else { puts(s); } } else { puts("Using default environment\n\n"); } if (himport_r(&env_htab, (char *)default_environment, sizeof(default_environment), '\0', 0) == 0) error("Environment import failed: errno = %d\n", errno); gd->flags |= GD_FLG_ENV_READY; } /* * Check if CRC is valid and (if yes) import the environment. * Note that "buf" may or may not be aligned. */ int env_import(const char *buf, int check) { env_t *ep = (env_t *)buf; if (check) { uint32_t crc; memcpy(&crc, &ep->crc, sizeof(crc)); if (crc32(0, ep->data, ENV_SIZE) != crc) { set_default_env("!bad CRC"); return 0; } } if (himport_r(&env_htab, (char *)ep->data, ENV_SIZE, '\0', 0)) { gd->flags |= GD_FLG_ENV_READY; return 1; } error("Cannot import environment: errno = %d\n", errno); set_default_env("!import failed"); return 0; } /*============*/ void env_relocate (void) { DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__,__LINE__, gd->reloc_off); #ifdef CONFIG_AMIGAONEG3SE enable_nvram(); #endif #if 0 #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 (CFG_ENV_SIZE); DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__,__LINE__,env_ptr); #endif #endif /* * After relocation to RAM, we can always use the "memory" functions */ env_get_char = env_get_char_memory; if (gd->env_valid == 0) { #if defined(CONFIG_GTH) || defined(CFG_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 (-1); #endif if (sizeof(default_environment) > ENV_SIZE) { puts ("*** Error - default environment is too large\n\n"); return; } set_default_env(NULL); #ifdef CFG_REDUNDAND_ENVIRONMENT env_ptr->flags = 0xFF; #endif //env_crc_update (); gd->env_valid = 1; } else { int ret; env_relocate_spec (); ret = env_import((char *)env_ptr, 0); if (!ret) { error("Cannot import environment: errno = %d\n", errno); set_default_env("env_import failed"); } } gd->env_addr = (ulong)&(env_ptr->data); #ifdef CONFIG_AMIGAONEG3SE disable_nvram(); #endif } #ifdef CONFIG_AUTO_COMPLETE #if 0 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 int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) { ENTRY *match; int found, idx; idx = 0; found = 0; cmdv[0] = NULL; while ((idx = hmatch_r(var, idx, &match, &env_htab))) { int vallen = strlen(match->key) + 1; if (found >= maxv - 2 || bufsz < vallen) break; cmdv[found++] = buf; memcpy(buf, match->key, vallen); buf += vallen; bufsz -= vallen; } qsort(cmdv, found, sizeof(cmdv[0]), strcmp_compar); if (idx) cmdv[found++] = "..."; cmdv[found] = NULL; return found; } #endif