1 files changed, 127 insertions, 0 deletions
diff --git a/env/sata.c b/env/sata.c
new file mode 100644
index 0000000000..b0cee35a60
--- /dev/null
+++ b/env/sata.c
@@ -0,0 +1,127 @@
+/*
+ * (C) Copyright 2010-2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/* #define DEBUG */
+
+#include <common.h>
+
+#include <command.h>
+#include <environment.h>
+#include <linux/stddef.h>
+#include <errno.h>
+#include <memalign.h>
+#include <sata.h>
+#include <search.h>
+
+#if defined(CONFIG_ENV_SIZE_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
+#error ENV REDUND not supported
+#endif
+
+#if !defined(CONFIG_ENV_OFFSET) || !defined(CONFIG_ENV_SIZE)
+#error CONFIG_ENV_OFFSET or CONFIG_ENV_SIZE not defined
+#endif
+
+char *env_name_spec = "SATA";
+
+DECLARE_GLOBAL_DATA_PTR;
+
+__weak int sata_get_env_dev(void)
+{
+	return CONFIG_SYS_SATA_ENV_DEV;
+}
+
+int env_init(void)
+{
+	/* use default */
+	gd->env_addr = (ulong)&default_environment[0];
+	gd->env_valid = 1;
+
+	return 0;
+}
+
+#ifdef CONFIG_CMD_SAVEENV
+static inline int write_env(struct blk_desc *sata, unsigned long size,
+			    unsigned long offset, 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 = blk_dwrite(sata, blk_start, blk_cnt, buffer);
+
+	return (n == blk_cnt) ? 0 : -1;
+}
+
+int saveenv(void)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
+	struct blk_desc *sata = NULL;
+	int env_sata, ret;
+
+	if (sata_initialize())
+		return 1;
+
+	env_sata = sata_get_env_dev();
+
+	sata = sata_get_dev(env_sata);
+	if (sata == NULL) {
+		printf("Unknown SATA(%d) device for environment!\n",
+		       env_sata);
+		return 1;
+	}
+
+	ret = env_export(env_new);
+	if (ret)
+		return 1;
+
+	printf("Writing to SATA(%d)...", env_sata);
+	if (write_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, &env_new)) {
+		puts("failed\n");
+		return 1;
+	}
+
+	puts("done\n");
+	return 0;
+}
+#endif /* CONFIG_CMD_SAVEENV */
+
+static inline int read_env(struct blk_desc *sata, unsigned long size,
+			   unsigned long offset, 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 = blk_dread(sata, blk_start, blk_cnt, buffer);
+
+	return (n == blk_cnt) ? 0 : -1;
+}
+
+void env_relocate_spec(void)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
+	struct blk_desc *sata = NULL;
+	int env_sata;
+
+	if (sata_initialize())
+		return;
+
+	env_sata = sata_get_env_dev();
+
+	sata = sata_get_dev(env_sata);
+	if (sata == NULL) {
+		printf("Unknown SATA(%d) device for environment!\n",
+		       env_sata);
+		return;
+	}
+
+	if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf))
+		return set_default_env(NULL);
+
+	env_import(buf, 1);
+}