Initial revision
diff --git a/common/environment.c b/common/environment.c
new file mode 100644
index 0000000..74bfd62
--- /dev/null
+++ b/common/environment.c
@@ -0,0 +1,198 @@
+/*
+ * (C) Copyright 2001
+ * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
+ *
+ * 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 <config.h>
+#include <environment.h>
+
+/*
+ * Handle HOSTS that have prepended
+ * crap on symbol names, not TARGETS.
+ */
+#if defined(__APPLE__)
+/* Leading underscore on symbols */
+# define SYM_CHAR "_"
+#else /* No leading character on symbols */
+# define SYM_CHAR
+#endif
+
+/*
+ * Generate embedded environment table
+ * inside U-Boot image, if needed.
+ */
+#if defined(ENV_IS_EMBEDDED)
+/*
+ * Only put the environment in it's own section when we are building
+ * U-Boot proper. The host based program "tools/envcrc" does not need
+ * a seperate section. Note that ENV_CRC is only defined when building
+ * U-Boot itself.
+ */
+#if (defined(CONFIG_FADS) || \
+ defined(CONFIG_HYMOD) || \
+ defined(CONFIG_ICU862) || \
+ defined(CONFIG_R360MPI) || \
+ defined(CONFIG_TQM8xxL) || \
+ defined(CONFIG_RRVISION) || \
+ defined(CONFIG_TRAB) ) && \
+ defined(ENV_CRC) /* Environment embedded in U-Boot .ppcenv section */
+/* XXX - This only works with GNU C */
+# define __PPCENV__ __attribute__ ((section(".ppcenv")))
+# define __PPCTEXT__ __attribute__ ((section(".text")))
+
+#elif defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
+# define __PPCENV__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
+# define __PPCTEXT__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
+
+#else /* Environment is embedded in U-Boot's .text section */
+/* XXX - This only works with GNU C */
+# define __PPCENV__ __attribute__ ((section(".text")))
+# define __PPCTEXT__ __attribute__ ((section(".text")))
+#endif
+
+/*
+ * Macros to generate global absolutes.
+ */
+#define GEN_SYMNAME(str) SYM_CHAR #str
+#define GEN_VALUE(str) #str
+#define GEN_ABS(name, value) \
+ asm (".globl " GEN_SYMNAME(name)); \
+ asm (GEN_SYMNAME(name) " = " GEN_VALUE(value))
+
+/*
+ * Macros to transform values
+ * into environment strings.
+ */
+#define XMK_STR(x) #x
+#define MK_STR(x) XMK_STR(x)
+
+/*
+ * Check to see if we are building with a
+ * computed CRC. Otherwise define it as ~0.
+ */
+#if !defined(ENV_CRC)
+# define ENV_CRC ~0
+#endif
+
+env_t environment __PPCENV__ = {
+ ENV_CRC, /* CRC Sum */
+#ifdef CFG_REDUNDAND_ENVIRONMENT
+ 1, /* Flags: valid */
+#endif
+ {
+#if defined(CONFIG_BOOTARGS)
+ "bootargs=" CONFIG_BOOTARGS "\0"
+#endif
+#if defined(CONFIG_BOOTCOMMAND)
+ "bootcmd=" CONFIG_BOOTCOMMAND "\0"
+#endif
+#if defined(CONFIG_RAMBOOTCOMMAND)
+ "ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
+#endif
+#if defined(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_ETHPRIME
+ "ethprime=" CONFIG_ETHPRIME "\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_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_PREBOOT
+ "preboot=" CONFIG_PREBOOT "\0"
+#endif
+#ifdef CONFIG_CLOCKS_IN_MHZ
+ "clocks_in_mhz=" "1" "\0"
+#endif
+#ifdef CONFIG_EXTRA_ENV_SETTINGS
+ CONFIG_EXTRA_ENV_SETTINGS
+#endif
+ "\0" /* Term. env_t.data with 2 NULLs */
+ }
+};
+#ifdef CFG_ENV_ADDR_REDUND
+env_t redundand_environment __PPCENV__ = {
+ 0, /* CRC Sum: invalid */
+ 0, /* Flags: invalid */
+ {
+ "\0"
+ }
+};
+#endif /* CFG_ENV_ADDR_REDUND */
+
+/*
+ * These will end up in the .text section
+ * if the environment strings are embedded
+ * in the image. When this is used for
+ * tools/envcrc, they are placed in the
+ * .data/.sdata section.
+ *
+ */
+unsigned long env_size __PPCTEXT__ = sizeof(env_t);
+
+/*
+ * Add in absolutes.
+ */
+GEN_ABS(env_offset, CFG_ENV_OFFSET);
+
+#endif /* ENV_IS_EMBEDDED */
