[U-Boot] [PATCH 2/3] [OneNAND] ENV Variable support for Flex-OneNAND

[Amul Kumar Saha]

Define and use CONFIG_ENV_ADDR_FLEX and CONFIG_ENV_SIZE_FLEX
for storing environment variables.

Signed-off-by: Rohit Hagargundgi <h.rohit at samsung.com>
Signed-off-by: Amul Kumar Saha <amul.saha at samsung.com>
---
 common/env_onenand.c      |   10 ++++++++++
 include/configs/apollon.h |    2 ++
 2 files changed, 12 insertions(+)

diff --git a/common/env_onenand.c b/common/env_onenand.c
index dcf09de..23d2caa 100644
--- a/common/env_onenand.c
+++ b/common/env_onenand.c
@@ -60,11 +60,14 @@ uchar env_get_char_spec(int index)
 void env_relocate_spec(void)
 {
 	struct mtd_info *mtd = &onenand_mtd;
+	struct onenand_chip *this = &onenand_chip;
 	loff_t env_addr;
 	int use_default = 0;
 	size_t retlen;

 	env_addr = CONFIG_ENV_ADDR;
+	if (FLEXONENAND(this))
+		env_addr = CONFIG_ENV_ADDR_FLEX;

 	/* Check OneNAND exist */
 	if (mtd->writesize)
@@ -91,6 +94,7 @@ void env_relocate_spec(void)
 int saveenv(void)
 {
 	struct mtd_info *mtd = &onenand_mtd;
+	struct onenand_chip *this = &onenand_chip;
 	loff_t env_addr = CONFIG_ENV_ADDR;
 	struct erase_info instr = {
 		.callback	= NULL,
@@ -98,6 +102,12 @@ int saveenv(void)
 	size_t retlen;

 	instr.len = CONFIG_ENV_SIZE;
+	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;
+	}
 	instr.addr = env_addr;
 	instr.mtd = mtd;
 	if (mtd->erase(mtd, &instr)) {
diff --git a/include/configs/apollon.h b/include/configs/apollon.h
index 575f60e..ddac5fb 100644
--- a/include/configs/apollon.h
+++ b/include/configs/apollon.h
@@ -76,6 +76,7 @@
  * Size of malloc() pool
  */
 #define	CONFIG_ENV_SIZE SZ_128K	/* Total Size of Environment Sector */
+#define CONFIG_ENV_SIZE_FLEX SZ_256K
 #define	CONFIG_SYS_MALLOC_LEN	(CONFIG_ENV_SIZE + SZ_1M)
 /* bytes reserved for initial data */
 #define	CONFIG_SYS_GBL_DATA_SIZE	128
@@ -255,6 +256,7 @@
 #define CONFIG_SYS_MONITOR_LEN		SZ_256K	/* U-Boot image size */
 #define	CONFIG_ENV_IS_IN_ONENAND	1
 #define CONFIG_ENV_ADDR		0x00020000
+#define CONFIG_ENV_ADDR_FLEX	0x00040000

 #define CONFIG_SYS_64BIT_VSPRINTF		/* needed for nand_util.c */