移植kernel-3.10.79 （1）-白红宇

移植kernel-3.10.79 （1）

阅读量：5091 次

发布时间：2019-06-13

本文共 2997 字，大约阅读时间需要 9 分钟。

u-boot 使用u-boot-2014.10

find * -name "*2410*_defconfig"

find * -name "*2440*_defconfig"

可以看到

arch/arm/configs/mini2440_defconfig

arch/arm/configs/s3c2410_defconfig

下载命令：

set serverip 192.168.1.104

kernel：

　　tftp 30000000 uImage

　　nand erase 0x000c0000 0x500000

　　nand write.jffs2 30000000 0xc0000 0x500000

　　set machid 16a

1 基本修改

1.1 GCC

export  PATH=PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/flinn/tools/4.4.3/bin

1.2 Makefile

ARCH            ?= armCROSS_COMPILE   ?= arm-linux-

或者

ARCH            ?= armCROSS_COMPILE   ?= /home/flinn/tools/4.4.3/bin/arm-none-linux-gnueabi-

1.3 编译

make s3c2410_defconfig;make    uImage    // s3c2410_defconfig肯定比mini2440_defconfig更全面些

这里s3c2410_defconfig肯定有开发板的支持，编译出来的uImage会很大。执行make menuconfig裁剪

1.4 烧录

Uncompressing Linux... done, booting the kernel.                Error: unrecognized/unsupported machine ID (r1 = 0x000000c1).                Available machine support:                ID (hex)        NAME        000007cf        MINI2440        0000016a        SMDK2440

1.5 设置u-boot参数machid

　　set machid 16a

　　boot后乱码

　　set machid 7cf,正常

　　可知smdk2440时钟有问题

1.6 修改时钟

　　vim arch/arm/mach-s3c24xx/mach-smdk2440.c

smdk2440_map_io            s3c24xx_init_clocks(16934400);   //改成12000000

烧录启动：

0x000000000000-0x000000004000 : "Boot Agent"        mtd: partition "Boot Agent" doesn't end on an erase block -- force read-only        0x000000000000-0x000000200000 : "S3C2410 flash partition 1"

1.7 修改分区

　　注意：最小单位128K，否则

　　mtd: partition "device_tree" doesn't end on an erase block -- force read-onl

　　vim arch/arm/mach-s3c24xx/common-smdk.c

static struct mtd_partition smdk_default_nand_part[] = {        [0] = {                .name   = "bootloader",                .size   = SZ_512K,                .offset = 0,        },        [1] = {                .name   = "device_tree",                .offset = MTDPART_OFS_APPEND,                .size   = SZ_128K,        },        [2] = {                .name   = "params",                .offset = MTDPART_OFS_APPEND,                .size   = SZ_128K,        },        [3] = {                .name   = "kernel",                .offset = MTDPART_OFS_APPEND,                .size   = 0x500000,          // 5M        },        [4] = {                .name   = "root",                .offset = MTDPART_OFS_APPEND,                .size   = MTDPART_SIZ_FULL,        }            };

　　新分区：

device nand0 
     
      , # parts = 5 #: name                size            offset          mask_flags 0: bootloader          0x00080000      0x00000000      0 1: device_tree         0x00020000      0x00080000      0 2: params              0x00020000      0x000a0000      0 3: kernel              0x00500000      0x000c0000      0 4: rootfs              0x0fa40000      0x005c0000      0

　　设置u-boot

　　#define CONFIG_BOOTCOMMAND "nand read.jffs2 0x30007FC0 kernel; nand read.jffs2 32000000 device_tree; bootm 0x30007FC0 - 0x32000000"

转载于:https://www.cnblogs.com/hulig7/p/9924182.html

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