Hello, Im new to all of this, but I 've been reading most of the post
related to the M29w256 numonyx and the u-boot documentation without
any success :(
Im booting from MMC card and I want to parallel nor to be probed by
cfi, but I have not succeeded since the uboot code freezes when at the
beginning of the first "flash_cmd_write" in cfi_flash.c
/* Issue FLASH reset command */
flash_cmd_reset(info);
The CS0_BASE_ADDR has an start address matching #define
WEIM_ARB_BASE_ADDR 0x08000000 , however the range of
the WEIM interface register settings are between 021B_8000 --
021B_8098.
Many board files has the WEIM CS0 as the start of the registers and I
think this is why the NOR configuration is a matter of config settings
like the ones below.
#define CONFIG_SYS_FLASH_BASE CS0_BASE_ADDR
#define CONFIG_SYS_MAX_FLASH_BANKS 1
#define CONFIG_SYS_MAX_FLASH_SECT 256
#define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_16BIT
#define CONFIG_SYS_FLASH_CFI_AMD_RESET 1
/* Monitor at beginning of flash */
#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE
#define CONFIG_SYS_MONITOR_LEN 0x40000 /* Reserve 256KiB */
#define CONFIG_ENV_SECT_SIZE 0x20000
#define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
#define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + 0x40000)
/* Address and size of Redundant Environment Sector */
#define CONFIG_ENV_OFFSET_REDUND (CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
#define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE
If you could give me some help so that at least I could send write
commands to the chip without hang pls...
Regards,
Francisco
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