X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=common%2Fenv_common.c;h=3d3cb70a6d60a21de660a20b260a20c447270ed9;hp=82e4936ced54182c3f97cb8cf06d8d96284ab5ba;hb=98ab435f736f24b503c8a9dbacc3ee1556a58106;hpb=0a9463e93537a68e7246714f43fb69eca0b7b214 diff --git a/common/env_common.c b/common/env_common.c index 82e4936ced..3d3cb70a6d 100644 --- a/common/env_common.c +++ b/common/env_common.c @@ -1,10 +1,10 @@ /* - * (C) Copyright 2000-2002 + * (C) Copyright 2000-2010 * 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. * @@ -28,255 +28,191 @@ #include #include #include +#include +#include #include DECLARE_GLOBAL_DATA_PTR; -#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) +#include -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" +struct hsearch_data env_htab = { + .apply = env_check_apply, }; -void env_crc_update (void) +static uchar __env_get_char_spec(int index) { - env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE); + return *((uchar *)(gd->env_addr + index)); } +uchar env_get_char_spec(int) + __attribute__((weak, alias("__env_get_char_spec"))); -static uchar env_get_char_init (int index) +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); + return env_get_char_spec(index); + else + return default_environment[index]; } -uchar env_get_char_memory (int index) +uchar env_get_char_memory(int index) { - if (gd->env_valid) { - return ( *((uchar *)(gd->env_addr + index)) ); - } else { - return ( default_environment[index] ); - } + return *env_get_addr(index); } -uchar env_get_char (int index) +uchar env_get_char(int index) { - uchar c; - /* if relocated to RAM */ if (gd->flags & GD_FLG_RELOC) - c = env_get_char_memory(index); + return env_get_char_memory(index); else - c = env_get_char_init(index); - - return (c); + return env_get_char_init(index); } -uchar *env_get_addr (int index) +const uchar *env_get_addr(int index) { - if (gd->env_valid) { - return ( ((uchar *)(gd->env_addr + index)) ); - } else { - return (&default_environment[index]); - } + if (gd->env_valid) + return (uchar *)(gd->env_addr + index); + else + return &default_environment[index]; } -void set_default_env(void) +void set_default_env(const char *s) { + /* + * By default, do not apply changes as they will eventually + * be applied by someone else + */ + int do_apply = 0; if (sizeof(default_environment) > ENV_SIZE) { - puts ("*** Error - default environment is too large\n\n"); + 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; + if (s) { + if (*s == '!') { + printf("*** Warning - %s, " + "using default environment\n\n", + s + 1); + } else { + /* + * This set_to_default was explicitly asked for + * by the user, as opposed to being a recovery + * mechanism. Therefore we check every single + * variable and apply changes to the system + * right away (e.g. baudrate, console). + */ + do_apply = 1; + puts(s); + } + } else { + puts("Using default environment\n\n"); + } + + if (himport_r(&env_htab, (char *)default_environment, + sizeof(default_environment), '\0', 0, + 0, NULL, do_apply) == 0) + error("Environment import failed: errno = %d\n", errno); + + gd->flags |= GD_FLG_ENV_READY; } -void env_relocate (void) -{ -#ifndef CONFIG_RELOC_FIXUP_WORKS - DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__,__LINE__, - gd->reloc_off); -#endif -#ifdef ENV_IS_EMBEDDED - /* - * The environment buffer is embedded with the text segment, - * just relocate the environment pointer - */ -#ifndef CONFIG_RELOC_FIXUP_WORKS - env_ptr = (env_t *)((ulong)env_ptr + gd->reloc_off); -#endif - DEBUGF ("%s[%d] embedded ENV at %p\n", __FUNCTION__,__LINE__,env_ptr); -#else +/* [re]set individual variables to their value in the default environment */ +int set_default_vars(int nvars, char * const vars[]) +{ /* - * We must allocate a buffer for the environment + * Special use-case: import from default environment + * (and use \0 as a separator) */ - env_ptr = (env_t *)malloc (CONFIG_ENV_SIZE); - DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__,__LINE__,env_ptr); + return himport_r(&env_htab, (const char *)default_environment, + sizeof(default_environment), '\0', H_NOCLEAR, + nvars, vars, 1 /* do_apply */); +} + +#ifndef CONFIG_SPL_BUILD +/* + * 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, + 0, NULL, 0 /* do_apply */)) { + gd->flags |= GD_FLG_ENV_READY; + return 1; + } + + error("Cannot import environment: errno = %d\n", errno); + + set_default_env("!import failed"); + + return 0; +} #endif +void env_relocate(void) +{ +#if defined(CONFIG_NEEDS_MANUAL_RELOC) + env_reloc(); +#endif if (gd->env_valid == 0) { -#if defined(CONFIG_GTH) || defined(CONFIG_ENV_IS_NOWHERE) /* Environment not changable */ - puts ("Using default environment\n\n"); +#if defined(CONFIG_ENV_IS_NOWHERE) || defined(CONFIG_SPL_BUILD) + /* Environment not changable */ + set_default_env(NULL); #else - puts ("*** Warning - bad CRC, using default environment\n\n"); - show_boot_progress (-60); + bootstage_error(BOOTSTAGE_ID_NET_CHECKSUM); + set_default_env("!bad CRC"); #endif - set_default_env(); - } - else { - env_relocate_spec (); + } else { + env_relocate_spec(); } - gd->env_addr = (ulong)&(env_ptr->data); } -#ifdef CONFIG_AUTO_COMPLETE +#if defined(CONFIG_AUTO_COMPLETE) && !defined(CONFIG_SPL_BUILD) int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) { - int i, nxt, len, vallen, found; - const char *lval, *rval; + ENTRY *match; + int found, idx; + idx = 0; 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); + while ((idx = hmatch_r(var, idx, &match, &env_htab))) { + int vallen = strlen(match->key) + 1; - if (len > 0 && (vallen < len || memcmp(lval, var, len) != 0)) - continue; - - if (found >= maxv - 2 || bufsz < vallen + 1) { - cmdv[found++] = "..."; + if (found >= maxv - 2 || bufsz < vallen) break; - } + cmdv[found++] = buf; - memcpy(buf, lval, vallen); buf += vallen; bufsz -= vallen; - *buf++ = '\0'; bufsz--; + 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; }