我的mini2440 Linux2.9.32 移植问题记录

1.总是出现MACH_TYPE = 1999
NOW, Booting Linux......
Uncompressing Linux...................................................................................... done, booting the kernel.

停止的情况

下面的是tools/mach-types中关于体系的参数定义

s3c2440            ARCH_S3C2440        S3C2440           362

mini2440        MACH_MINI2440        MINI2440        1999

解决方法：将第一行改成 s3c2440            ARCH_S3C2440        S3C2440           1999

2.内核的配置

1..[*] Enable loadable module support --->

[*]   Module unloading

2. System Type ---->
       [*] S3C2410 DMA support       [*] Support ARM920T processor
            S3C2440 Machines --->
               [*] SMDK2440
               [*] SMDK2440 with S3C2440 CPU moduleq

其他的比如2410,2443相关的全部去掉

3.Boot options   --->
将 (root=/dev/hda1 ro init=/bin/bash console=ttySAC0) Default kernel command string

改成    (noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0 ）
其中 mtdblock2 表示 MTD 分区的第二个分区存文件系统； Linuxrc 为启动的首个脚本。

4关掉nand ecc .因为bootload中已经有ecc校验算法

Device Drivers --->
       <*> Memory Technology Device (MTD) support --->
               [*]   MTD partitioning support
               <*> NAND Device Support --->
                       <*>   NAND Flash support for S3C2410/S3C2440 SoC
                       [ ]     S3C2410 NAND Hardware ECC     // 这个要去掉

3.添加nand flash驱动（可参考arm/plat-s3c24xx/common-smdk.c)

在arm/mach-mini2440.c

中添加static struct mtd_partition mini2440_default_nand_part[] = {
    [0] = {
        .name    = "supervivi",
        .size    =  0x00040000,//dev/mdkbloack0
        .offset    = 0,
    },
    [1] = {
        .name    = "param",
        .offset = 0x00040000,
        .size    = 0x00020000,
    },
    [2] = {
        .name    = "Kernel",
        .offset = 0x00560000,
        .size    =1024 * 1024 * 1024,
    },
    [3] = {
        .name    = "nand",
        .offset    = 0x00000000,
        .size    = 1024 * 1024 * 1024,
    },
   
   
};

static struct s3c2410_nand_set mini2440_nand_sets[] = {
    [0] = {
        .name        = "NAND",
        .nr_chips    = 1,
        .nr_partitions    = ARRAY_SIZE(mini2440_default_nand_part),
        .partitions    =mini2440_default_nand_part,
    },
};

static struct s3c2410_platform_nand mini2440_nand_info = {
    .tacls        = 20,
    .twrph0        = 60,
    .twrph1        = 20,
    .nr_sets    = ARRAY_SIZE(mini2440_nand_sets),
    .sets        = mini2440_nand_sets,
        .ignore_unset_ecc = 1,
};

更改下列函数：