--- /dev/null
+/*
+ * (C) Copyright 2010-2011 Freescale Semiconductor, Inc.
+ *
+ * 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
+ */
+
+/* #define DEBUG */
+
+#include <common.h>
+
+#include <command.h>
+#include <environment.h>
+#include <linux/stddef.h>
+#include <sata.h>
+#include <search.h>
+#include <errno.h>
+
+#if defined(CONFIG_ENV_SIZE_REDUND) && \
+ (CONFIG_ENV_SIZE_REDUND != CONFIG_ENV_SIZE)
+#error CONFIG_ENV_SIZE_REDUND should be the same as CONFIG_ENV_SIZE
+#endif
+
+char *env_name_spec = "SATA";
+
+#ifdef ENV_IS_EMBEDDED
+env_t *env_ptr = &environment;
+#else /* ! ENV_IS_EMBEDDED */
+env_t *env_ptr;
+#endif /* ENV_IS_EMBEDDED */
+
+extern int sata_curr_device;
+
+#if !defined(CONFIG_ENV_OFFSET)
+#define CONFIG_ENV_OFFSET 0
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int env_init(void)
+{
+ /* use default */
+ gd->env_addr = (ulong)&default_environment[0];
+ gd->env_valid = 1;
+
+ return 0;
+}
+
+
+inline int write_env(block_dev_desc_t *sata, unsigned long size,
+ unsigned long offset, const void *buffer)
+{
+ uint blk_start, blk_cnt, n;
+
+ blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
+ blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
+
+ n = sata->block_write(sata_curr_device, blk_start,
+ blk_cnt, (u_char *)buffer);
+
+ return (n == blk_cnt) ? 0 : -1;
+}
+
+int saveenv(void)
+{
+ ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
+ ssize_t len;
+ char *res;
+ struct block_dev_desc_t *sata = NULL;
+
+ if (sata_curr_device == -1) {
+ if (sata_initialize())
+ return 1;
+ sata_curr_device = CONFIG_SATA_ENV_DEV;
+ }
+
+ if (sata_curr_device >= CONFIG_SYS_SATA_MAX_DEVICE) {
+ printf("Unknown SATA(%d) device for environment!\n",
+ sata_curr_device);
+ return 1;
+ }
+ res = (char *)&env_new->data;
+ len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
+ if (len < 0) {
+ error("Cannot export environment: errno = %d\n", errno);
+ return 1;
+ }
+
+ env_new->crc = crc32(0, &env_new->data[0], ENV_SIZE);
+
+ sata = sata_get_dev(sata_curr_device);
+
+ printf("Writing to SATA(%d)... ", sata_curr_device);
+ if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, (u_char *)env_new)) {
+ puts("failed\n");
+ return 1;
+ }
+
+ puts("done\n");
+
+ return 0;
+}
+
+
+inline int read_env(block_dev_desc_t *sata, unsigned long size,
+ unsigned long offset, const void *buffer)
+{
+ uint blk_start, blk_cnt, n;
+
+ blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
+ blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
+
+ n = sata->block_read(sata_curr_device, blk_start,
+ blk_cnt, (uchar *)buffer);
+
+ return (n == blk_cnt) ? 0 : -1;
+}
+
+void env_relocate_spec(void)
+{
+#if !defined(ENV_IS_EMBEDDED)
+ ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
+ struct block_dev_desc_t *sata = NULL;
+ int ret = 0;
+
+ if (sata_curr_device == -1) {
+ if (sata_initialize())
+ return 1;
+ sata_curr_device = CONFIG_SATA_ENV_DEV;
+ }
+
+ if (sata_curr_device >= CONFIG_SYS_SATA_MAX_DEVICE) {
+ printf("Unknown SATA(%d) device for environment!\n",
+ sata_curr_device);
+ return 1;
+ }
+ sata = sata_get_dev(sata_curr_device);
+
+ if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)){
+ printf( "\r\n--->Read environment failed \r\n");
+ ret = 1;
+ goto err;
+ }
+
+ gd->env_valid = 1;
+ env_import(buf, 1);
+ ret = 0;
+err:
+ if (ret)
+ set_default_env(NULL);
+#endif
+}
+
+
+