* (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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
/************************************************************************
* Default settings to be used when no valid environment is found
*/
-#define XMK_STR(x) #x
-#define MK_STR(x) XMK_STR(x)
+#include <env_default.h>
-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_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));
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;
"using default environment\n\n",
s + 1);
} else {
+ flags = H_INTERACTIVE;
puts(s);
}
} else {
}
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.
}
}
- 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;
}
{
#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
- show_boot_error(60);
+ bootstage_error(BOOTSTAGE_ID_NET_CHECKSUM);
set_default_env("!bad CRC");
#endif
} else {
}
}
-#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;
projects / karo-tx-uboot.git / blobdiff