From: David Brownell dbrownell@users.sourceforge.net
This updates the optional (non-default!) NAND support for the DaVinci DM6446 EVM:
- include MTD partitioning, defaulting to what Linux uses
- use a flash-based BBT, which among other things speeds bootup
This matches code that's now queued for mainline Linux, and might even merge in an upcoming 2.6.30-rc; the MTIDS are set up so that the U-Boot $mtdparts environment variable can be passed as-is on the kernel command line, as a cmdlinepart override.
Signed-off-by: David Brownell dbrownell@users.sourceforge.net
--- a/include/configs/davinci_dvevm.h +++ b/include/configs/davinci_dvevm.h @@ -119,6 +121,10 @@ #ifdef CONFIG_SYS_NAND_SMALLPAGE #define CONFIG_ENV_SECT_SIZE 512 /* Env sector Size */ #define CONFIG_ENV_SIZE SZ_16K +#define CONFIG_MTD_PARTITIONS +#define CONFIG_CMD_MTDPARTS +#define MTDIDS_DEFAULT "nand0=davinci_nand.0" +#define MTDPARTS_DEFAULT "mtdparts=davinci_nand.0:384k(bootloader)ro,4m(kernel),-(filesystem)" #else #define CONFIG_ENV_SECT_SIZE 2048 /* Env sector Size */ #define CONFIG_ENV_SIZE SZ_128K @@ -126,6 +132,7 @@ #define CONFIG_SKIP_LOWLEVEL_INIT /* U-Boot is loaded by a bootloader */ #define CONFIG_SKIP_RELOCATE_UBOOT /* to a proper address, init done */ #define CONFIG_SYS_NAND_BASE 0x02000000 +#define CONFIG_SYS_NAND_USE_FLASH_BBT #define CONFIG_SYS_NAND_HW_ECC #define CONFIG_SYS_MAX_NAND_DEVICE 1 /* Max number of NAND devices */ #define CONFIG_ENV_OFFSET 0x0 /* Block 0--not used by bootcode */