version magic '2.6.22.6 mod_unload ARMv5 ' should be '2.6.22.6 mod_unload ARMv4 字符设备驱动遇到的内核版本不匹问题
我一开始的内核编译是有错误的
1.
我使用的不是 linux-2.6.22.6_jz2440.patch 补丁 而是 linux-2.6.22.6_jz2440_v2v3.patch
2.
忘记了一个步骤 那就是
生成 .config配置文件
可以有两种方法生成 .config文件
1.make xxxx_deconfig
2.cp config_ok .config （复制厂家的配置文件）
一开始执行 make uImage 错误的编译信息：
drivers/char/s3c24xx_leds.c:7:32: asm/arch/regs-gpio.h: No such file or directory
drivers/char/s3c24xx_leds.c:19: error: `S3C2410_GPB5' undeclared here (not in a function)
drivers/char/s3c24xx_leds.c:19: error: initializer element is not constant
drivers/char/s3c24xx_leds.c:19: error: (near initialization for `led_table[0]')
drivers/char/s3c24xx_leds.c:20: error: `S3C2410_GPB6' undeclared here (not in a function)
drivers/char/s3c24xx_leds.c:20: error: initializer element is not constant
drivers/char/s3c24xx_leds.c:20: error: (near initialization for `led_table[1]')
drivers/char/s3c24xx_leds.c:21: error: `S3C2410_GPB7' undeclared here (not in a function)
drivers/char/s3c24xx_leds.c:21: error: initializer element is not constant
drivers/char/s3c24xx_leds.c:21: error: (near initialization for `led_table[2]')
drivers/char/s3c24xx_leds.c:22: error: `S3C2410_GPB8' undeclared here (not in a function)
drivers/char/s3c24xx_leds.c:22: error: initializer element is not constant
drivers/char/s3c24xx_leds.c:22: error: (near initialization for `led_table[3]')
drivers/char/s3c24xx_leds.c:27: error: `S3C2410_GPB5_OUTP' undeclared here (not in a function)
drivers/char/s3c24xx_leds.c:27: error: initializer element is not constant
drivers/char/s3c24xx_leds.c:27: error: (near initialization for `led_cfg_table[0]')
drivers/char/s3c24xx_leds.c:28: error: `S3C2410_GPB6_OUTP' undeclared here (not in a function)
drivers/char/s3c24xx_leds.c:28: error: initializer element is not constant
drivers/char/s3c24xx_leds.c:28: error: (near initialization for `led_cfg_table[1]')
drivers/char/s3c24xx_leds.c:29: error: `S3C2410_GPB7_OUTP' undeclared here (not in a function)
drivers/char/s3c24xx_leds.c:29: error: initializer element is not constant
drivers/char/s3c24xx_leds.c:29: error: (near initialization for `led_cfg_table[2]')
drivers/char/s3c24xx_leds.c:30: error: `S3C2410_GPB8_OUTP' undeclared here (not in a function)
drivers/char/s3c24xx_leds.c:30: error: initializer element is not constant
drivers/char/s3c24xx_leds.c:30: error: (near initialization for `led_cfg_table[3]')
drivers/char/s3c24xx_leds.c: In function `s3c24xx_leds_open':
drivers/char/s3c24xx_leds.c:42: warning: implicit declaration of function `s3c2410_gpio_cfgpin'
drivers/char/s3c24xx_leds.c: In function `s3c24xx_leds_ioctl':
drivers/char/s3c24xx_leds.c:63: warning: implicit declaration of function `s3c2410_gpio_setpin'
scripts/Makefile.build:208: recipe for target 'drivers/char/s3c24xx_leds.o' failed
make[2]: *** [drivers/char/s3c24xx_leds.o] Error 1
scripts/Makefile.build:323: recipe for target 'drivers/char' failed
make[1]: *** [drivers/char] Error 2
Makefile:765: recipe for target 'drivers' failed
make: *** [drivers] Error 2
正确的make uImage 编译信息：
SYSMAP .tmp_System.map
MODPOST vmlinux
WARNING: arch/arm/mach-s3c2410/built-in.o(.text+0x80): Section mismatch: reference to .init.data: (between 's3c2410_dma_add' and 's3c2410_pm_prepare')
WARNING: arch/arm/mach-s3c2410/built-in.o(.text+0x84): Section mismatch: reference to .init.data: (between 's3c2410_dma_add' and 's3c2410_pm_prepare')
WARNING: arch/arm/mach-s3c2412/built-in.o(.text+0x784): Section mismatch: reference to .init.data: (between 's3c2412_dma_add' and 's3c2412_cpu_suspend')
WARNING: arch/arm/mach-s3c2440/built-in.o(.text+0x4dc): Section mismatch: reference to .init.data: (after 's3c2440_dma_add')
WARNING: arch/arm/mach-s3c2440/built-in.o(.text+0x4e0): Section mismatch: reference to .init.data: (after 's3c2440_dma_add')
WARNING: arch/arm/mach-s3c2443/built-in.o(.text+0x74c): Section mismatch: reference to .init.text: (between 's3c2443_irq_add' and 's3c2443_irq_init')
WARNING: arch/arm/mach-s3c2443/built-in.o(.text+0x768): Section mismatch: reference to .init.text: (between 's3c2443_irq_add' and 's3c2443_irq_init')
WARNING: arch/arm/mach-s3c2443/built-in.o(.text+0x784): Section mismatch: reference to .init.text: (between 's3c2443_irq_add' and 's3c2443_irq_init')
WARNING: arch/arm/mach-s3c2443/built-in.o(.text+0x7a0): Section mismatch: reference to .init.text: (between 's3c2443_irq_add' and 's3c2443_irq_init')
WARNING: arch/arm/mach-s3c2443/built-in.o(.text+0x7bc): Section mismatch: reference to .init.text: (between 's3c2443_irq_add' and 's3c2443_irq_init')
WARNING: arch/arm/mach-s3c2443/built-in.o(.text+0x1020): Section mismatch: reference to .init.data: (after 's3c2443_dma_add')
WARNING: arch/arm/plat-s3c24xx/built-in.o(.text+0x2a8c): Section mismatch: reference to .init.text:s3c24xx_dma_init (between 's3c2410_dma_init' and 's3c2410_dma_request')
WARNING: arch/arm/plat-s3c24xx/built-in.o(.data+0x23cc): Section mismatch: reference to .init.text: (between 's3c24xx_timer' and 's3c2410_timer_irq')
WARNING: sound/built-in.o(.text+0x18c3c): Section mismatch: reference to .init.text: (between 's3c2410iis_probe' and 's3c2410iis_remove')
WARNING: sound/built-in.o(.text+0x18c64): Section mismatch: reference to .init.text: (between 's3c2410iis_probe' and 's3c2410iis_remove')
OBJCOPY arch/arm/boot/Image
Kernel: arch/arm/boot/Image is ready
AS arch/arm/boot/compressed/head.o
GZIP arch/arm/boot/compressed/piggy.gz
AS arch/arm/boot/compressed/piggy.o
CC arch/arm/boot/compressed/misc.o
LD arch/arm/boot/compressed/vmlinux
OBJCOPY arch/arm/boot/zImage
Kernel: arch/arm/boot/zImage is ready
UIMAGE arch/arm/boot/uImage
"mkimage" command not found - U-Boot images will not be built
Image arch/arm/boot/uImage is ready
然后 重新 make 编译 字符设备驱动
具体过程参考这篇日志：
S3C2400 第一个字符设备驱动开发日志
再次make
[email protected]:/work/drivers_and_test$ make
make -C /work/system/linux-2.6.22.6 M=`pwd` modules
make[1]: Entering directory '/work/system/linux-2.6.22.6'
CC [M] /work/drivers_and_test/first_drv.o
Building modules, stage 2.
MODPOST 1 modules
CC /work/drivers_and_test/first_drv.mod.o
LD [M] /work/drivers_and_test/first_drv.ko
make[1]: Leaving directory '/work/system/linux-2.6.22.6'
[email protected]:/work/drivers_and_test$ ll
生成了 .ko文件
拷贝它到制作的根文件系统下：
[email protected]:/work/drivers_and_test$ cp first_drv.ko /work/nfs_root/first_fs
[email protected]:/work/drivers_and_test$ ls /work/nfs_root/first_fs
bin dev etc first_drv.ko hello.txt lib linuxrc proc sbin sys usr
再次制作 yaff2 文件系统镜像：
[email protected]:/work/nfs_root$ mkyaffs2image first_fs first_fs11.yaffs2
[email protected]:/work/nfs_root$ ls
first_fs first_fs10.yaffs2 first_fs11.yaffs2 first_fs6.yaff2 first_fs7.yaffs2 first_fs8.yaffs2
拷贝到板子里
板子里
执行 cat /proc/devices 查看当前的字符设备：
# cat /proc/devices
Character devices:
1 mem
2 pty
3 ttyp
4 /dev/vc/0
4 tty
4 ttyS
5 /dev/tty
5 /dev/console
5 /dev/ptmx
6 lp
7 vcs
10 misc
13 input
14 sound
29 fb
90 mtd
99 ppdev
116 alsa
128 ptm
136 pts
180 usb
189 usb_device
204 s3c2410_serial
253 usb_endpoint
254 rtc
Block devices:
1 ramdisk
7 loop
8 sd
31 mtdblock
65 sd
66 sd
67 sd
68 sd
69 sd
70 sd
71 sd
128 sd
129 sd
130 sd
131 sd
132 sd
133 sd
134 sd
135 sd
179 mmc
然后执行 下面命令 加载驱动模块
# insmod first_drv.ko
first_drv: module license 'unspecified' taints kernel.
再次查看 字符设备驱动列表：
# cat /proc/devices
Character devices:
1 mem
2 pty
3 ttyp
4 /dev/vc/0
4 tty
4 ttyS
5 /dev/tty
5 /dev/console
5 /dev/ptmx
6 lp
7 vcs
10 misc
13 input
14 sound
29 fb
90 mtd
99 ppdev
111 first_drv
116 alsa
128 ptm
136 pts
180 usb
189 usb_device
204 s3c2410_serial
253 usb_endpoint
254 rtc
可以看到我们的主设备号为 111的驱动已经加载
问题解决了
就是因为 linux 之前编译出问题了