Flash size Select and add MTD Data partition--Linux kernel

You need to modify the location:

(1)/linux-2.6/arch/mips/rt2880/kconfig

(2)/linux-2.6/drivers/mtd/maps/ralink-flash.h

(3)/ LINUX-2.6/DRIVERS/MTD/MAPS/RALINK-SPI.C

(4)/vendors/ralink/rt5350/config/4m_32m_config.linux-2.6 (Config.h generated after make DEP)

(1) Add options in Menuconfig

Choiceprompt "Flash Size" default rt2880_flash_4mconfig t2880_flash_2m bool "2M" config rt2880_flash_4m bool " 4M "config rt2880_flash_8m bool" 8M "config rt2880_flash_16m bool" 16M "config rt2880_flash_32m bool" 32 M "#select rt2880_flash_32mendchoice#data Partition # comment section is not invalid Choiceprompt" FLASH Data Size "Default Rt2880_flash_data_ 320KBconfig rt2880_flash_data_0kb bool "None (0) KB" #config rt2880_flash_data_64kb# bool "0x10000 (+) KB" #confi G rt2880_flash_data_128kb# bool "0x20000 (+) KB" #config rt2880_flash_data_192kb# bool "0x30000 (192) KB" #confi G rt2880_flash_data_256kb# bool "0x40000 (UP) KB" config rt2880_flash_data_320kb bool "0x50000 (+) KB" Config R t2880_flash_data_384kb bool "0x60000 (384) KB" Endchoiceconfig mtd_physmap_data_len hex default 0x0 if RT       2880_flash_data_0kb default 0x10000 If rt2880_flash_data_64kb default 0x20000 if rt2880_flash_data_128kb Default 0x30000 if rt2880_flash_data_192KB default 0x40000 If rt2880_flash_data_256kb default 0x50000 if rt2880_flash_data_320kb default 0x6000  0 if Rt2880_flash_data_384kbchoice

(2) Add the data partition size and modify the kernel partition size.

#if defined (config_rt2880_flash_32m) #define Mtd_boot_part_size0x40000#definemtd_config_part_size0x20000# Definemtd_factory_part_size0x20000#define mtd_data_papt_size config_mtd_physmap_data_len/**/#else # if defined ( reconfig_partition_size) #if!defined (mtd_boot_part_size) #error "please define mtd_boot_part_size" #endif # if!defined (mtd_config_part_size) #error "please define mtd_config_part_size" #endif # if!defined (mtd_factory_part_size) #error " Please define mtd_factory_part_size "#endif #else#define Mtd_boot_part_size0x30000#definemtd_config_part_ Size0x10000#definemtd_factory_part_size0x10000#define mtd_data_papt_size Config_mtd_physmap_data_len<span Style= "Font-family:arial, Helvetica, Sans-serif;" >/* Add data partition length */</span> #endif #endif#ifdef config_rt2880_rootfs_in_flash#ifdef config_rootfs_in_flash_no_ Padding#define config_mtd_kernel_part_siz 0#endif#define mtd_rootfs_part_sizeimage1_size-(MTD_BOOT_PART_SIZE + MTD_ Config_part_size + mtd_factory_part_size + config_mtd_kernel_part_siz + mtd_data_papt_size) #defineMTD_KERN_PART_SIZECONFIG_MTD_KERNEL_PART_SIZ//#defineMTD_KERN_PART_ Size0x310000#else//config_rt2880_rootfs_in_rom#define mtd_kern_part_sizeimage1_size-(MTD_BOOT_PART_SIZE + MTD_ Config_part_size + mtd_factory_part_size + mtd_data_papt_size)/* Calculates the memory partition length after removing the DATA partition length *///#defineMTD_KERN_PART_ Size0x310000#endif

(3) Define data partition

static struct Mtd_partition rt2880_partitions[] = {{name: ' All ', size:                Mtdpart_siz_full, offset:0,},/* Put your own partition definitions here */{ Name: "Bootloader", Size:mtd_boot_part_size, offset:0                ,}, {name: "Config", Size:mtd_config_part_size, Offset:mtdpart_ofs_append}, {name: "Factory", size:m                Td_factory_part_size, Offset:mtdpart_ofs_append#ifdef Config_rt2880_rootfs_in_flash}, { Name: "Kernel", Size:mtd_kern_part_size, Offset:m Tdpart_ofs_append,}, {name: "RootFS", Size:mtd_rootfs_part_siz E, offset: Mtdpart_ofs_append, #ifdef config_rootfs_in_flash_no_padding}, {name: "Kern El_rootfs ", Size:mtd_kern_part_size + mtd_rootfs_part_size, offset:mtd_b                Oot_part_size + mtd_config_part_size + mtd_factory_part_size, #endif #else//config_rt2880_rootfs_in_ram}, { Name: "Kernel", Size:mtd_kern_part_size, OFFSET:MT           Dpart_ofs_append, #endif//config_rt2880_rootfs_in_flash#ifdef config_dual_image}, {name: "Kernel2", Size:mtd_kern2_part_size, Offset:mtd_kern2_part_offset, #i Fdef Config_rt2880_rootfs_in_flash}, {name: "RootFS2", SIZE:MT D_rootfs2_part_size, Offset:mtd_rootfs2_part_offset, #endif #endif//config_dual_image/*data Division Add */}, {name: "Date",/* MTdblock5 */size:mtd_data_papt_size, offset:mtdpart_ofs_append,/* offset, DATA start position */}}; 

Flash size Select and add MTD Data partition--Linux kernel