NAND FLASH时序及建立分区表

NAND FLASH时序及建立分区表

平台:Redhat9.0 + S3C2440 编译环境: 2.6.18.2 + gcc-3.4.1   根据NAND FLASH的datasheet修改kernel对nand flash的访问, 在CPU主机为405M时,tacls,twrph0,twrph1的数值如下: 进入 arch/arm/mach-s3c2410/common-smdk.c   static struct s3c2410_platform_nand smdk_nand_info = {     .tacls        = 15,        //default(for 300M) 20,     .twrph0        = 45,        //default(for 300M) 60,     .twrph1        = 15,        //default(for 300M) 20,     .nr_sets    = ARRAY_SIZE(smdk_nand_sets),     .sets        = smdk_nand_sets, };     在128M的Nand Flash上建立分区表, 进入 arch/arm/mach-s3c2410/common-smdk.c 修改   static struct mtd_partition smdk_default_nand_part[] = {         // U-boot 256K         [0] = {                 .name = "uboot",                 .offset = 0,                 .size = SZ_256K,         },         // Kernel 2M - 256K         [1] = {                 .name = "kernel",                 .offset = SZ_256K,                 .size = (SZ_2M - SZ_256K),         },         // rootfs 16M         [2] = {                 .name = "rootfs",                 .offset = SZ_2M,                 .size = (16 * SZ_1M),         },         // app 16M         [3] = {                 .name = "app",                 .offset = 18 * SZ_1M,                 .size = 16 * SZ_1M,         },         // other (127 - 34)M         [4] = {                 .name = "other",                 .offset = 34 * SZ_1M,                 .size = (127 - 34) * SZ_1M,         }, };

 原文地址http://blog.chinaunix.net/u1/42456/showart_357383.html