X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=common%2Fenv_common.c;h=c0bfc2f5db3b3efebb7c039747b54abc186c1acc;hb=0782bdf89878f3b4806b127b60f8d0e72c195354;hp=d9e990dbbec92c9eb6f8b4e28194e1e6ee6d1856;hpb=d978780b2e676c005460cd561f4f15b5220bdf49;p=u-boot diff --git a/common/env_common.c b/common/env_common.c index d9e990dbbe..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 @@ -37,104 +21,12 @@ DECLARE_GLOBAL_DATA_PTR; /************************************************************************ * Default settings to be used when no valid environment is found */ -#define XMK_STR(x) #x -#define MK_STR(x) XMK_STR(x) +#include -const 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=" 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=" 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_ENV_VARS_UBOOT_CONFIG - "arch=" CONFIG_SYS_ARCH "\0" - "cpu=" CONFIG_SYS_CPU "\0" - "board=" CONFIG_SYS_BOARD "\0" -#ifdef CONFIG_SYS_VENDOR - "vendor=" CONFIG_SYS_VENDOR "\0" -#endif -#ifdef CONFIG_SYS_SOC - "soc=" CONFIG_SYS_SOC "\0" -#endif -#endif -#ifdef CONFIG_EXTRA_ENV_SETTINGS - CONFIG_EXTRA_ENV_SETTINGS -#endif - "\0" +struct hsearch_data env_htab = { + .change_ok = env_flags_validate, }; -struct hsearch_data env_htab; - static uchar __env_get_char_spec(int index) { return *((uchar *)(gd->env_addr + index)); @@ -173,8 +65,42 @@ const 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; @@ -186,6 +112,7 @@ void set_default_env(const char *s) "using default environment\n\n", s + 1); } else { + flags = H_INTERACTIVE; puts(s); } } else { @@ -193,12 +120,26 @@ void set_default_env(const char *s) } if (himport_r(&env_htab, (char *)default_environment, - sizeof(default_environment), '\0', 0) == 0) + 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. @@ -218,7 +159,8 @@ int env_import(const char *buf, int check) } } - if (himport_r(&env_htab, (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; } @@ -234,9 +176,11 @@ void env_relocate(void) { #if defined(CONFIG_NEEDS_MANUAL_RELOC) 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 bootstage_error(BOOTSTAGE_ID_NET_CHECKSUM); @@ -247,7 +191,7 @@ void env_relocate(void) } } -#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) { ENTRY *match;