1 files changed, 116 insertions, 0 deletions
diff --git a/env/onenand.c b/env/onenand.c
new file mode 100644
index 0000000000..cc3d670de8
--- /dev/null
+++ b/env/onenand.c
@@ -0,0 +1,116 @@
+/*
+ * (C) Copyright 2010 DENX Software Engineering
+ * Wolfgang Denk <wd@denx.de>
+ *
+ * (C) Copyright 2005-2009 Samsung Electronics
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <environment.h>
+#include <linux/stddef.h>
+#include <malloc.h>
+#include <search.h>
+#include <errno.h>
+#include <onenand_uboot.h>
+
+#include <linux/compat.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/onenand.h>
+
+char *env_name_spec = "OneNAND";
+
+#define ONENAND_MAX_ENV_SIZE	CONFIG_ENV_SIZE
+#define ONENAND_ENV_SIZE(mtd)	(ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void env_relocate_spec(void)
+{
+	struct mtd_info *mtd = &onenand_mtd;
+#ifdef CONFIG_ENV_ADDR_FLEX
+	struct onenand_chip *this = &onenand_chip;
+#endif
+	int rc;
+	size_t retlen;
+#ifdef ENV_IS_EMBEDDED
+	char *buf = (char *)&environment;
+#else
+	loff_t env_addr = CONFIG_ENV_ADDR;
+	char onenand_env[ONENAND_MAX_ENV_SIZE];
+	char *buf = (char *)&onenand_env[0];
+#endif /* ENV_IS_EMBEDDED */
+
+#ifndef ENV_IS_EMBEDDED
+# ifdef CONFIG_ENV_ADDR_FLEX
+	if (FLEXONENAND(this))
+		env_addr = CONFIG_ENV_ADDR_FLEX;
+# endif
+	/* Check OneNAND exist */
+	if (mtd->writesize)
+		/* Ignore read fail */
+		mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE,
+				&retlen, (u_char *)buf);
+	else
+		mtd->writesize = MAX_ONENAND_PAGESIZE;
+#endif /* !ENV_IS_EMBEDDED */
+
+	rc = env_import(buf, 1);
+	if (rc)
+		gd->env_valid = 1;
+}
+
+int saveenv(void)
+{
+	env_t	env_new;
+	int ret;
+	struct mtd_info *mtd = &onenand_mtd;
+#ifdef CONFIG_ENV_ADDR_FLEX
+	struct onenand_chip *this = &onenand_chip;
+#endif
+	loff_t	env_addr = CONFIG_ENV_ADDR;
+	size_t	retlen;
+	struct erase_info instr = {
+		.callback	= NULL,
+	};
+
+	ret = env_export(&env_new);
+	if (ret)
+		return ret;
+
+	instr.len = CONFIG_ENV_SIZE;
+#ifdef CONFIG_ENV_ADDR_FLEX
+	if (FLEXONENAND(this)) {
+		env_addr = CONFIG_ENV_ADDR_FLEX;
+		instr.len = CONFIG_ENV_SIZE_FLEX;
+		instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ?
+				1 : 0;
+	}
+#endif
+	instr.addr = env_addr;
+	instr.mtd = mtd;
+	if (mtd_erase(mtd, &instr)) {
+		printf("OneNAND: erase failed at 0x%08llx\n", env_addr);
+		return 1;
+	}
+
+	if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen,
+			(u_char *)&env_new)) {
+		printf("OneNAND: write failed at 0x%llx\n", instr.addr);
+		return 2;
+	}
+
+	return 0;
+}
+
+int env_init(void)
+{
+	/* use default */
+	gd->env_addr = (ulong)&default_environment[0];
+	gd->env_valid = 1;
+
+	return 0;
+}