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@@ -0,0 +1,127 @@
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+/*
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+ * (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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+ */
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+
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+/* #define DEBUG */
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+
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+#include <common.h>
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+
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+#include <command.h>
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+#include <environment.h>
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+#include <linux/stddef.h>
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+#include <errno.h>
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+#include <memalign.h>
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+#include <sata.h>
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+#include <search.h>
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+
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+#if defined(CONFIG_ENV_SIZE_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
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+#error ENV REDUND not supported
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+#endif
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+
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+#if !defined(CONFIG_ENV_OFFSET) || !defined(CONFIG_ENV_SIZE)
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+#error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined
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+#endif
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+
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+char *env_name_spec = "SATA";
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+
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+DECLARE_GLOBAL_DATA_PTR;
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+
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+__weak int sata_get_env_dev(void)
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+{
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+ return CONFIG_SYS_SATA_ENV_DEV;
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+}
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+
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+int env_init(void)
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+{
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+ /* use default */
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+ gd->env_addr = (ulong)&default_environment[0];
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+ gd->env_valid = 1;
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+
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+ return 0;
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+}
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+
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+#ifdef CONFIG_CMD_SAVEENV
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+static inline int write_env(struct blk_desc *sata, unsigned long size,
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+ unsigned long offset, void *buffer)
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+{
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+ uint blk_start, blk_cnt, n;
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+
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+ blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
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+ blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
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+
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+ n = blk_dwrite(sata, blk_start, blk_cnt, buffer);
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+
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+ return (n == blk_cnt) ? 0 : -1;
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+}
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+
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+int saveenv(void)
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+{
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+ ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
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+ struct blk_desc *sata = NULL;
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+ int env_sata, ret;
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+
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+ if (sata_initialize())
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+ return 1;
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+
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+ env_sata = sata_get_env_dev();
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+
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+ sata = sata_get_dev(env_sata);
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+ if (sata == NULL) {
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+ printf("Unknown SATA(%d) device for environment!\n",
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+ env_sata);
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+ return 1;
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+ }
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+
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+ ret = env_export(env_new);
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+ if (ret)
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+ return 1;
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+
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+ printf("Writing to SATA(%d)...", env_sata);
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+ if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, &env_new)) {
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+ puts("failed\n");
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+ return 1;
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+ }
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+
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+ puts("done\n");
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+ return 0;
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+}
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+#endif /* CONFIG_CMD_SAVEENV */
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+
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+static inline int read_env(struct blk_desc *sata, unsigned long size,
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+ unsigned long offset, void *buffer)
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+{
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+ uint blk_start, blk_cnt, n;
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+
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+ blk_start = ALIGN(offset, sata->blksz) / sata->blksz;
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+ blk_cnt = ALIGN(size, sata->blksz) / sata->blksz;
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+
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+ n = blk_dread(sata, blk_start, blk_cnt, buffer);
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+
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+ return (n == blk_cnt) ? 0 : -1;
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+}
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+
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+void env_relocate_spec(void)
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+{
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+ ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
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+ struct blk_desc *sata = NULL;
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+ int env_sata;
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+
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+ if (sata_initialize())
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+ return;
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+
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+ env_sata = sata_get_env_dev();
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+
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+ sata = sata_get_dev(env_sata);
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+ if (sata == NULL) {
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+ printf("Unknown SATA(%d) device for environment!\n",
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+ env_sata);
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+ return;
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+ }
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+
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+ if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf))
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+ return set_default_env(NULL);
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+
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+ env_import(buf, 1);
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+}
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