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