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mx28evk: Introduce a new target for saving env vars to NAND

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Introduce 'mx28evk_nand' target for saving environment variables into NAND.

The mx28evk board does not come with a NAND flash populated from the
factory. It comes with an empty slot (U23), which allows the insertion of a
48-pin TSOP flash device.

Tested with a K9LBG08U0D.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Otavio Salvador <otavio@ossystems.com.br>
This commit is contained in:
Fabio Estevam 2013-03-07 11:28:19 +00:00 • committed by Stefano Babic
parent 85449dbd4b
commit ab461be65d
3 changed files with 50 additions and 2 deletions

3
boards.cfg
View file

@ -196,7 +196,8 @@ mx23_olinuxino arm arm926ejs mx23_olinuxino olimex
apx4devkit arm arm926ejs apx4devkit bluegiga mxs apx4devkit
mx23evk arm arm926ejs mx23evk freescale mxs mx23evk
m28evk arm arm926ejs m28evk denx mxs m28evk
mx28evk arm arm926ejs mx28evk freescale mxs mx28evk
mx28evk arm arm926ejs mx28evk freescale mxs mx28evk:ENV_IS_IN_MMC
mx28evk_nand arm arm926ejs mx28evk freescale mxs mx28evk:ENV_IS_IN_NAND
sc_sps_1 arm arm926ejs sc_sps_1 schulercontrol mxs
nhk8815 arm arm926ejs nhk8815 st nomadik
nhk8815_onenand arm arm926ejs nhk8815 st nomadik nhk8815:BOOT_ONENAND

18
doc/README.mx28evk
View file

@ -23,6 +23,24 @@ To boot MX28EVK from an SD card, set the boot mode DIP switches as:
* VDD 5V: To the left (off)
* Hold Button: Down (off)
Environment Storage
-------------------
There are two targets for mx28evk:
"make mx28evk_config" - store enviroment variables into MMC
or
"make mx28evk_nand_config" - store enviroment variables into NAND flash
Choose the target accordingly.
Note: The mx28evk board does not come with a NAND flash populated from the
factory. It comes with an empty slot (U23), which allows the insertion of a
48-pin TSOP flash device.
Follow the instructions from doc/README.mx28_common to generate a bootable SD
card.

31
include/configs/mx28evk.h
View file

@ -62,6 +62,7 @@
#define CONFIG_CMD_SPI
#define CONFIG_CMD_USB
#define CONFIG_CMD_BOOTZ
#define CONFIG_CMD_NAND
/* Memory configurations */
#define CONFIG_NR_DRAM_BANKS 1 /* 1 bank of DRAM */
@ -115,7 +116,6 @@
#define CONFIG_APBH_DMA
/* MMC Driver */
#define CONFIG_ENV_IS_IN_MMC
#ifdef CONFIG_ENV_IS_IN_MMC
#define CONFIG_ENV_OFFSET (256 * 1024)
#define CONFIG_ENV_SIZE (16 * 1024)
@ -130,11 +130,40 @@
#endif
/* NAND Driver */
#define CONFIG_ENV_SIZE (16 * 1024)
#ifdef CONFIG_CMD_NAND
#define CONFIG_NAND_MXS
#define CONFIG_SYS_MAX_NAND_DEVICE 1
#define CONFIG_SYS_NAND_BASE 0x60000000
#define CONFIG_SYS_NAND_5_ADDR_CYCLE
/* Environment is in NAND */
#define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE
#define CONFIG_ENV_SECT_SIZE (128 * 1024)
#define CONFIG_ENV_RANGE (512 * 1024)
#ifndef CONFIG_ENV_OFFSET
#define CONFIG_ENV_OFFSET 0x300000
#endif
#define CONFIG_ENV_OFFSET_REDUND \
(CONFIG_ENV_OFFSET + CONFIG_ENV_RANGE)
#define CONFIG_CMD_UBI
#define CONFIG_CMD_UBIFS
#define CONFIG_CMD_MTDPARTS
#define CONFIG_RBTREE
#define CONFIG_LZO
#define CONFIG_MTD_DEVICE
#define CONFIG_MTD_PARTITIONS
#define MTDIDS_DEFAULT "nand0=gpmi-nand"
#define MTDPARTS_DEFAULT \
"mtdparts=gpmi-nand:" \
"3m(bootloader)ro," \
"512k(environment)," \
"512k(redundant-environment)," \
"4m(kernel)," \
"128k(fdt)," \
"8m(ramdisk)," \
"-(filesystem)"
#endif
/* Ethernet on SOC (FEC) */