X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=common%2Fenv_common.c;h=c0bfc2f5db3b3efebb7c039747b54abc186c1acc;hb=5c68f123867cd7d8b30b831ba8bb9e7281954633;hp=a276efc634717eb4740b4ce5351402eb3c6ee483;hpb=2e5167ccad93ca9cfa6a2acfab5e4785418e477e;p=karo-tx-uboot.git diff --git a/common/env_common.c b/common/env_common.c index a276efc634..c0bfc2f5db 100644 --- a/common/env_common.c +++ b/common/env_common.c @@ -5,23 +5,7 @@ * (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 + * SPDX-License-Identifier: GPL-2.0+ */ #include @@ -34,133 +18,46 @@ DECLARE_GLOBAL_DATA_PTR; -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 = { + .change_ok = env_flags_validate, }; -static uchar env_get_char_init (int index) +static uchar __env_get_char_spec(int index) { - uchar c; + 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) +{ /* if crc was bad, use the default environment */ if (gd->env_valid) - c = env_get_char_spec(index); + return env_get_char_spec(index); else - c = default_environment[index]; - - return (c); + return default_environment[index]; } -uchar env_get_char_memory (int index) +uchar env_get_char_memory(int 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); @@ -168,8 +65,42 @@ uchar *env_get_addr (int index) return &default_environment[index]; } +/* + * Read an environment variable as a boolean + * Return -1 if variable does not exist (default to true) + */ +int getenv_yesno(const char *var) +{ + char *s = getenv(var); + + if (s == NULL) + return -1; + return (*s == '1' || *s == 'y' || *s == 'Y' || *s == 't' || *s == 'T') ? + 1 : 0; +} + +/* + * Look up the variable from the default environment + */ +char *getenv_default(const char *name) +{ + char *ret_val; + unsigned long really_valid = gd->env_valid; + unsigned long real_gd_flags = gd->flags; + + /* Pretend that the image is bad. */ + gd->flags &= ~GD_FLG_ENV_READY; + gd->env_valid = 0; + ret_val = getenv(name); + gd->env_valid = really_valid; + gd->flags = real_gd_flags; + return ret_val; +} + 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; @@ -179,21 +110,36 @@ void set_default_env(const char *s) if (*s == '!') { printf("*** Warning - %s, " "using default environment\n\n", - s+1); + s + 1); } else { + flags = H_INTERACTIVE; puts(s); } } else { puts("Using default environment\n\n"); } - if (himport((char *)default_environment, - sizeof(default_environment), '\0', 0) == 0) { + if (himport_r(&env_htab, (char *)default_environment, + sizeof(default_environment), '\0', flags, + 0, NULL) == 0) error("Environment import failed: errno = %d\n", errno); - } + gd->flags |= GD_FLG_ENV_READY; } + +/* [re]set individual variables to their value in the default environment */ +int set_default_vars(int nvars, char * const vars[]) +{ + /* + * Special use-case: import from default environment + * (and use \0 as a separator) + */ + return himport_r(&env_htab, (const char *)default_environment, + sizeof(default_environment), '\0', + H_NOCLEAR | H_INTERACTIVE, nvars, vars); +} + /* * Check if CRC is valid and (if yes) import the environment. * Note that "buf" may or may not be aligned. @@ -213,7 +159,8 @@ int env_import(const char *buf, int check) } } - if (himport((char *)ep->data, ENV_SIZE, '\0', 0)) { + if (himport_r(&env_htab, (char *)ep->data, ENV_SIZE, '\0', 0, + 0, NULL)) { gd->flags |= GD_FLG_ENV_READY; return 1; } @@ -225,61 +172,52 @@ int env_import(const char *buf, int check) return 0; } -void env_relocate (void) +void env_relocate(void) { #if defined(CONFIG_NEEDS_MANUAL_RELOC) - extern void env_reloc(void); - env_reloc(); + env_htab.change_ok += gd->reloc_off; #endif if (gd->env_valid == 0) { -#if defined(CONFIG_ENV_IS_NOWHERE) /* Environment not changable */ +#if defined(CONFIG_ENV_IS_NOWHERE) || defined(CONFIG_SPL_BUILD) + /* Environment not changable */ set_default_env(NULL); #else - show_boot_progress (-60); + bootstage_error(BOOTSTAGE_ID_NET_CHECKSUM); set_default_env("!bad CRC"); #endif } else { - env_relocate_spec (); + env_relocate_spec(); } } -#if 0 /* need to reimplement - def 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) { + while ((idx = hmatch_r(var, idx, &match, &env_htab))) { + int vallen = strlen(match->key) + 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++] = "..."; + 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; }