友善之臂4412开发板android应用层通过jni直接控制除LED、蜂鸣器外的其它IO口，系统直接重启问题
2015-12-19 10:29
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问题描述：
安卓应用层，app通过jni打开/dev下的自己写的LED设备驱动文件，进行读写操作。能控制核心板上的4个LED灯亮灭。当把linux内核LED驱动中的针脚地址从GPM4_0改为GPJ1_5(也就是PCB板上的com10，连接CMOS CAMERA)或其他口，试图通过这个针脚直接点亮我外接的一个LED灯时，安卓系统卡住了，卡了约2到3秒的样子，安卓系统重启了。
问题未知[备注：外设板为友善之臂4412增强版]
问题猜测：由于光linux系统，没安卓系统时，所有的外设接口都是可以单独驱动的。但上了安卓就不能控制。可能是安卓里有相应的驱动已经占用掉了这些外设针脚。详细原因有待深究。
最后的妥协方案：几乎所有的外设针脚都试了一遍，发现位于SDWIFI那排最后的带“SPI”的那4个针脚可以拓展为GPio，并可以通过安卓系统通过jni来控制。
以下是我的问题全部信息，以备查询。
LED驱动部分：
Led_demo.h
#ifndef __LED_DEMO_H__
#define __LED_DEMO_H__
#include <linux/cdev.h>
#define LED_ON _IOW('L', 0, int)
#define LED_OFF _IOW('L', 1, int)
#define LED_DEMO_DEVICE_NODE_NAME "led_demo"
#define LED_DEMO_DEVICE_CLASS_NAME "led_demo"
#define LED_DEMO_DEVICE_FILE_NAME "led_demo"
#define EXYNOS4412_GPJ1CON 0x11400260
#define EXYNOS4412_GPJ1DAT 0x11400264
struct led_demo_dev
{
struct cdev dev;
};
#endif
Led_demo.c
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <mach/gpio.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include "led_demo.h"
static int led_demo_major;
static int led_demo_minor;
static int number_of_dev = 1;
static dev_t dev;
static struct led_demo_dev *led_dev = NULL;
static unsigned int *gpj1con = NULL;
static unsigned int *gpj1dat = NULL;
static struct class *led_demo_class = NULL;
static int led_open (struct inode *node, struct file *fops)
{
struct led_demo_dev *dev;
dev = container_of(node->i_cdev, struct led_demo_dev, dev);
fops->private_data = dev;
return 0;
}
static int led_close (struct inode *node, struct file *fops)
{
return 0;
}
static long led_ioctl (struct file *fops, unsigned int cmd, unsigned long data)
{
//struct led_demo_dev * led_dev = (struct led_demo_dev *)fops->private_data;
switch (cmd)
{
case LED_ON:
*gpj1dat &= ~(1<<1);
break;
case LED_OFF:
*gpj1dat |= 1<<1;
break;
default:
return -EINVAL;
break;
}
return 0;
}
struct file_operations led_fops =
{
.owner = THIS_MODULE,
.open = led_open,
.unlocked_ioctl = led_ioctl,
.release = led_close,
};
static int __led_setup_dev(struct led_demo_dev * dev)
{
int err = -1;
dev_t devno = MKDEV(led_demo_major, led_demo_minor);
memset(dev, 0, sizeof(struct led_demo_dev));
cdev_init(&(dev->dev), &led_fops);
dev->dev.owner = THIS_MODULE;
err = cdev_add(&(dev->dev), devno, number_of_dev);
if(err < 0)
{
return err;
}
return 0;
}
static int led_demo_init(void)
{
int err = -1;
struct device *temp = NULL;
printk(KERN_ALERT"Initializing led demo device.\n");
err = alloc_chrdev_region(&dev, 0, number_of_dev, LED_DEMO_DEVICE_NODE_NAME);
if(err < 0)
{
printk(KERN_ALERT"fail to alloc char dev region.\n");
goto fail;
}
led_demo_major = MAJOR(dev);
led_demo_minor = MINOR(dev);
led_dev = kmalloc(sizeof(struct led_demo_dev), GFP_KERNEL);
if(!led_dev)
{
err = -ENOMEM;
printk(KERN_ALERT"Failed to alloc led device.\n");
goto unregister;
}
err = __led_setup_dev(led_dev);
if (err < 0)
{
printk(KERN_ALERT"Failed to setup led device.\n");
goto clean_up;
}
gpj1con= (unsigned int *)ioremap(EXYNOS4412_GPJ1CON, 4);
if(!gpj1con)
{
err = -ENOMEM;
goto destroy_cdev;
}
gpj1dat = (unsigned int *)ioremap(EXYNOS4412_GPJ1DAT, 4);
if(!gpj1dat)
{
err = -ENOMEM;
goto unmap1;
}
*gpj1con &=~ (0xf<<(1*4));
*gpj1con |= 0x1<<(1*4);
led_demo_class = class_create(THIS_MODULE, LED_DEMO_DEVICE_CLASS_NAME);
temp = device_create(led_demo_class, NULL, dev, NULL, "%s", LED_DEMO_DEVICE_FILE_NAME);
iounmap(gpj1dat);
iounmap(gpj1con);
if(IS_ERR(temp))
{
err = PTR_ERR(temp);
printk(KERN_ALERT"Failed to create led demo device.\n");
goto destroy_class;
}
dev_set_drvdata(temp, (void *)led_dev);
printk(KERN_ALERT"Succeed to initialize led demo device.\n");
return 0;
destroy_class:
class_destroy(led_demo_class);
unmap1:
iounmap(gpj1con);
destroy_cdev:
cdev_del(&(led_dev->dev));
clean_up:
kfree(led_dev);
unregister:
unregister_chrdev_region(MKDEV(led_demo_major, led_demo_minor), number_of_dev);
fail:
return err;
}
static void led_demo_exit(void)
{
if(led_demo_class)
{
device_destroy(led_demo_class, MKDEV(led_demo_major, led_demo_minor));
class_destroy(led_demo_class);
}
iounmap(gpj1dat);
iounmap(gpj1con);
if(led_dev)
{
cdev_del(&(led_dev->dev));
kfree(led_dev);
}
unregister_chrdev_region(MKDEV(led_demo_major, led_demo_minor), number_of_dev);
}
module_init(led_demo_init);
module_exit(led_demo_exit);
MODULE_LICENSE("GPL");
安卓应用jni层：
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <string.h>
#include <jni.h>
#include <errno.h>
//#include <utils/Log.h>
//#include <ALog.h>
#include <android/log.h>
#define OFF 0x11
#define ON 0x22
#define LED_OFF _IOW('L',1,int)
#define LED_ON _IOW('L',0,int)
#define READ 0x33
#define DEV_NAME "/dev/led_demo"
#define LOG_TAG "LedLog"
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
int fd;
jint Java_com_szx_ledkz_Ledkz_openled(JNIEnv* env, jobject obj){
fd=open(DEV_NAME,O_RDWR);
/* if(fd<0){
LOGI("没有打开文件"); //其中1$为java的String类的format需要加上的.其他的写法和C语言一致
}else{
LOGI("文件已打开，fd为%d",fd);
}
*/
return fd;
}
jint Java_com_szx_ledkz_Ledkz_closeled(JNIEnv* env, jobject obj){
int ret;
ret = close(fd);
return ret;
}
jint Java_com_szx_ledkz_Ledkz_ioctl(JNIEnv* env, jobject obj,jint fd,jint controlcode,jint ledid){
int CTLCODE = controlcode;
int value =-1;
switch(CTLCODE)
{ case ON:
{
ioctl(fd,LED_ON,ledid);//setLedState( 0, 1 );//调用驱动程序中的ioctrl接口，把命令传下去，实现硬件操作
break;
}
case OFF:
{
ioctl(fd,LED_OFF,ledid);//// setLedState( 0, 0 );//调用驱动程序中的ioctrl接口，把命令传下去，实现硬件操作
break;
}
case READ:
{
value=ioctl(fd,3,ledid);// 2 表示读取状态的cmd；0、1表示led控制的命令；
return value;
break;
}
default:break;
}
return 0;
}
后面会有完整led_demo示例app工程。请用eclipse打开。
http://download.csdn.net/detail/bilifo/9367680
完整的重启信息：
shell@tiny4412:/ $ cd system/bin/
shell@tiny4412:/system/bin $ ./led_demo_test
[ 81.703033] type=1400 audit(81.695:11): avc: denied { read write } for pid=3961 comm="led_demo_test" name="led_demo" dev=tmpfs ino=3340 scontext=u:r:shell:s0 tcontext=u:object_r:device:s0 tclass=chr_file
[ 81.703693] type=1400 audit(81.695:12): avc: denied { open } for pid=3961 comm="led_demo_test" name="led_demo" dev=tmpfs ino=3340 scontext=u:r:shell:s0 tcontext=u:object_r:device:s0 tclass=chr_file
[ 81.716586] open----open----open----open----open----
[ 81.721366] ioctl----ioctl----ioctl----ioctl----
[ 81.725917] 1074023425type=1400 audit(81.720:13): avc: denied { ioctl } for pid=3961 comm="led_demo_test" path="/dev/led_demo" dev=tmpfs ino=3340 scontext=u:r:shell:s0 tcontext=u:object_r:device:s0 tclass=chr_file
[ 81.744851] ioctlLED_OFF----ioctlLED_OFF----ioctlLED_OFF----ioctlLED_OFF----
[ 81.751978] Unable to handle kernel paging request at virtual address e5478264
[ 81.760756] pgd = d1d20000
[ 81.761834] [e5478264] *pgd=5e7f3811, *pte=00000000, *ppte=00000000
[ 81.769356] Internal error: Oops: 7 [#1] PREEMPT SMP
[ 81.772928] Modules linked in: compat snd_soc_tiny4412_wm8960 snd_soc_wm8960
[ 81.779960] CPU: 2 Not tainted (3.0.86-FriendlyARM #25)
[ 81.785521] PC is at led_ioctl+0xbc/0xf8
[ 81.789423] LR is at l2x0_cache_sync+0x38/0x3c
[ 81.793848] pc : [<c04f86d0>] lr : [<c0058e80>] psr: 60000013
[ 81.793851] sp : d1d0fee8 ip : d1d0fed0 fp : d1d0fefc
[ 81.805303] r10: 00000000 r9 : d1d0e000 r8 : 00000000
[ 81.810512] r7 : 00000003 r6 : dd9e3030 r5 : 00000001 r4 : 40044c01
[ 81.817022] r3 : e5478264 r2 : 00000000 r1 : a0000013 r0 : c09b6bb8
[ 81.823533] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 81.830649] Control: 10c5387d Table: 51d2004a DAC: 00000015
[ 81.836378]
[ 81.836379] PC: 0xc04f8650:
[ 81.840630] 8650 e1540003 0a000013 e3e00015 e89da818 e59f0090 eb068ca4 f57ff04f e59f3088
[ 81.848789] 8670 e593301c e3530000 0a000000 e12fff33 e59f3078 e5933000 e5932000 f57ff04f
[ 81.856949] 8690 e3c22002 e5832000 e59f0064 eb068c96 e3a00000 e89da818 e59f0058 eb068c92
[ 81.865108] 86b0 f57ff04f e59f3040 e593301c e3530000 0a000000 e12fff33 e59f3030 e5933000
[ 81.873267] 86d0 e5932000 f57ff04f e3822002 e5832000 e59f001c eb068c84 e3a00000 e89da818
[ 81.881426] 86f0 c08a429c c0837020 c08a42c4 c09188cc c0dd9384 c08a4348 c08a4304 e1a0c00d
[ 81.889585] 8710 e92dd9f0 e24cb004 e24dd00c e59f4214 e59f0214 eb068c74 e2840004 e3a01000
[ 81.897744] 8730 e3a02001 e59f3204 ebf144a6 e2506000 ba000074 e59f31f8 e5947004 e5930018
[ 81.905904]
[ 81.905906] LR: 0xc0058e00:
[ 81.910157] 8e00 e59f0008 eb1918d9 e89da818 c09b6bb0 c09b6bb8 e1a0c00d e92dd830 e24cb004
[ 81.918316] 8e20 e59f401c e1a00004 eb19199c e1a05000 ebffffc2 e1a00004 e1a01005 eb1918cb
[ 81.926475] 8e40 e89da830 c09b6bb8 e1a0c00d e92dd830 e24cb004 e3064bb0 e34c409b e2845008
[ 81.934634] 8e60 e1a00005 eb19198d e5943000 e3a02000 e1a01000 e5832730 e1a00005 eb1918bb
[ 81.942793] 8e80 e89da830 e1a0c00d e92dd878 e24cb004 e59f60a0 e0602001 e5963010 e1a04000
[ 81.950953] 8ea0 e1520003 e1a05001 2a000020 e2860008 eb19197a e3c4401f e1a01000 e1550004
[ 81.959112] 8ec0 9a000014 e0643005 e3530a01 90843003 82843a01 e1530004 9a000005 e5962000
[ 81.967271] 8ee0 e2822e7f e5824000 e2844020 e1530004 8afffffb e1550003 9affffef e59f0038
[ 81.975431]
[ 81.975433] SP: 0xd1d0fe68:
[ 81.979684] fe68 00000000 ffffffff 00000001 00000000 d1d0fec4 0000040f 00000007 dd9e3030
[ 81.987843] fe88 00000003 00000000 d1d0fefc d1d0fea0 c004b210 c0045510 c09b6bb8 a0000013
[ 81.996002] fea8 00000000 e5478264 40044c01 00000001 dd9e3030 00000003 00000000 d1d0e000
[ 82.004161] fec8 00000000 d1d0fefc d1d0fed0 d1d0fee8 c0058e80 c04f86d0 60000013 ffffffff
[ 82.012321] fee8 c04f8614 d41e8000 d1d0ff74 d1d0ff00 c0156778 c04f8620 00000025 0000000a
[ 82.020480] ff08 00000001 00000001 00000001 00000000 00000000 00000000 c022ac48 c022ad70
[ 82.028639] ff28 00000003 d41e8000 00000001 40044c01 00000003 c004bac4 d1d0e000 00000000
[ 82.036798] ff48 d1d0ff64 d1d0ff58 d41e8000 00000001 40044c01 00000003 00000000 00000000
[ 82.044958]
[ 82.044959] IP: 0xd1d0fe50:
[ 82.049210] fe50 d1d0fe64 2020205b 372e3138 35383434 00205d31 00040006 00000000 ffffffff
[ 82.057370] fe70 00000001 00000000 d1d0fec4 0000040f 00000007 dd9e3030 00000003 00000000
[ 82.065529] fe90 d1d0fefc d1d0fea0 c004b210 c0045510 c09b6bb8 a0000013 00000000 e5478264
[ 82.073688] feb0 40044c01 00000001 dd9e3030 00000003 00000000 d1d0e000 00000000 d1d0fefc
[ 82.081847] fed0 d1d0fed0 d1d0fee8 c0058e80 c04f86d0 60000013 ffffffff c04f8614 d41e8000
[ 82.090007] fef0 d1d0ff74 d1d0ff00 c0156778 c04f8620 00000025 0000000a 00000001 00000001
[ 82.098166] ff10 00000001 00000000 00000000 00000000 c022ac48 c022ad70 00000003 d41e8000
[ 82.106325] ff30 00000001 40044c01 00000003 c004bac4 d1d0e000 00000000 d1d0ff64 d1d0ff58
[ 82.114484]
[ 82.114486] FP: 0xd1d0fe7c:
[ 82.118737] fe7c 0000040f 00000007 dd9e3030 00000003 00000000 d1d0fefc d1d0fea0 c004b210
[ 82.126897] fe9c c0045510 c09b6bb8 a0000013 00000000 e5478264 40044c01 00000001 dd9e3030
[ 82.135056] febc 00000003 00000000 d1d0e000 00000000 d1d0fefc d1d0fed0 d1d0fee8 c0058e80
[ 82.143215] fedc c04f86d0 60000013 ffffffff c04f8614 d41e8000 d1d0ff74 d1d0ff00 c0156778
[ 82.151374] fefc c04f8620 00000025 0000000a 00000001 00000001 00000001 00000000 00000000
[ 82.159533] ff1c 00000000 c022ac48 c022ad70 00000003 d41e8000 00000001 40044c01 00000003
[ 82.167693] ff3c c004bac4 d1d0e000 00000000 d1d0ff64 d1d0ff58 d41e8000 00000001 40044c01
[ 82.175852] ff5c 00000003 00000000 00000000 d1d0ffa4 d1d0ff78 c0156d8c c01566f8 00000001
[ 82.184011]
[ 82.184013] R0: 0xc09b6b38:
[ 82.188264] 6b38 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 82.196423] 6b58 00000000 00000000 00000000 00000000 00000000 64000000 0000041f 0000045f
[ 82.204582] 6b78 c0007ff8 c1485ac0 00000004 00000000 00000000 00000000 00000000 00000000
[ 82.212742] 6b98 00000000 00000000 00000000 00000000 047e047e 00000000 fe600000 0000ffff
[ 82.220901] 6bb8 eec2eec2 00000000 00100000 4100c4c8 00000010 00000800 00000000 00000000
[ 82.229060] 6bd8 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 82.237219] 6bf8 00000000 00000000 00000000 c006851c 00000000 00000000 00000000 00000000
[ 82.245378] 6c18 00000000 00000000 00000000 00000000 00000000 009f009f 00000000 00000000
[ 82.253538]
[ 82.253540] R3: 0xe54781e4:
[ 82.257791] 81e4 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.265950] 8204 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.274109] 8224 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.282268] 8244 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.290428] 8264 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.298587] 8284 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.306746] 82a4 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.314905] 82c4 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.323065]
[ 82.323067] R6: 0xdd9e2fb0:
[ 82.327318] 2fb0 00000000 00000000 dd9e2fc0 00000000 00010001 00000000 00200000 00000000
[ 82.335477] 2fd0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 82.343636] 2ff0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 82.351795] 3010 00000000 00000000 00000000 dd9e301c dd9e301c dd9e3024 dd9e3024 00000000
[ 82.359954] 3030 000021b6 00000000 00000000 c06a7b00 dd8f0000 00050005 00000000 00000000
[ 82.368114] 3050 00000000 dd8c4c78 00000001 00020002 00000000 dd9e3064 dd9e3064 00000000
[ 82.376273] 3070 00000000 dd9e3058 00000000 00000000 00000000 dd9e3084 dd9e3084 dd9e308c
[ 82.384432] 3090 dd9e308c dd9e2e9c dd9e328c de2e0764 de2e0764 00000d0c 00000001 00000001
[ 82.392592]
[ 82.392593] R9: 0xd1d0df80:
[ 82.396844] df80 1ce3206e 000a0010 0aae3059 0aac3054 206e1112 00101ce3 3059000a 30540aaf
[ 82.405004] dfa0 51120aac 1ce3206e 000a0010 0aad3059 0000000e 00020003 00000000 00100853
[ 82.413163] dfc0 0000000d 0aaf2052 0aaf1059 0aae2052 0aae1059 0aad2052 0aad1059 0000000e
[ 82.421322] dfe0 00040004 00000000 0010085d 00000007 0aaf0159 0aae0259 0aad0359 0000000e
[ 82.429481] e000 00000000 00000002 00000000 d36e1e00 c09399e0 00000002 00000015 d36e1e00
[ 82.437641] e020 c18ba700 d1d0e000 de448f00 00000000 dd9e4380 00000a09 d1d0fc24 d1d0fb68
[ 82.445800] e040 c069c114 00000000 00000000 00000000 00000000 00000000 01010000 00000000
[ 82.453959] e060 401be10c 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 82.462120] Process led_demo_test (pid: 3961, stack limit = 0xd1d0e2f0)
[ 82.468716] Stack: (0xd1d0fee8 to 0xd1d10000)
[ 82.473058] fee0: c04f8614 d41e8000 d1d0ff74 d1d0ff00 c0156778 c04f8620
[ 82.481217] ff00: 00000025 0000000a 00000001 00000001 00000001 00000000 00000000 00000000
[ 82.489377] ff20: c022ac48 c022ad70 00000003 d41e8000 00000001 40044c01 00000003 c004bac4
[ 82.497536] ff40: d1d0e000 00000000 d1d0ff64 d1d0ff58 d41e8000 00000001 40044c01 00000003
[ 82.505695] ff60: 00000000 00000000 d1d0ffa4 d1d0ff78 c0156d8c c01566f8 00000001 00000000
[ 82.513854] ff80: c004bac4 00000001 00000003 00000001 00000036 c004bac4 00000000 d1d0ffa8
[ 82.522013] ffa0: c004b940 c0156d1c 00000001 00000003 00000003 40044c01 00000001 bebce988
[ 82.530172] ffc0: 00000001 00000003 00000001 00000036 00000000 00000000 00000000 bebce9cc
[ 82.538332] ffe0: 400f8391 bebce978 4014cc69 401353d4 000f0010 00000003 000f2470 000f7689
[ 82.546488] Backtrace:
[ 82.548926] [<c04f8614>] (led_ioctl+0x0/0xf8) from [<c0156778>] (do_vfs_ioctl+0x8c/0x624)
[ 82.557078] r4:d41e8000 r3:c04f8614
[ 82.560640] [<c01566ec>] (do_vfs_ioctl+0x0/0x624) from [<c0156d8c>] (sys_ioctl+0x7c/0x84)
[ 82.568803] [<c0156d10>] (sys_ioctl+0x0/0x84) from [<c004b940>] (ret_fast_syscall+0x0/0x30)
[ 82.577129] r8:c004bac4 r7:00000036 r6:00000001 r5:00000003 r4:00000001
[ 82.583815] Code: 0a000000 e12fff33 e59f3030 e5933000 (e5932000)
[ 82.590156] ---[ end trace 7eca82fcf33a1de4 ]---
[ 82.594490] Kernel panic - not syncing: Fatal exception
[ 82.599707] Backtrace:
[ 82.602138] [<c004f618>] (dump_backtrace+0x0/0x10c) from [<c069b740>] (dump_stack+0x18/0x1c)
[ 82.610562] r6:d36e1e00 r5:00000001 r4:c09b9540 r3:00000000
[ 82.616194] [<c069b728>] (dump_stack+0x0/0x1c) from [<c069b7bc>] (panic+0x78/0x1b8)
[ 82.623843] [<c069b744>] (panic+0x0/0x1b8) from [<c004fbd0>] (die+0x190/0x1c0)
[ 82.631041] r3:00000001 r2:d1d0fca0 r1:60000113 r0:c081c3b0
[ 82.636673] r7:00000007
[ 82.639196] [<c004fa40>] (die+0x0/0x1c0) from [<c0054860>] (__do_kernel_fault+0x6c/0x8c)
[ 82.647275] r8:dd9e4380 r7:00000007 r6:00000000 r5:e5478264 r4:d1d0fea0
[ 82.653952] [<c00547f4>] (__do_kernel_fault+0x0/0x8c) from [<c0054a24>] (do_page_fault+0x1a4/0x34c)
[ 82.662986] r8:d1d0fea0 r7:00000007 r6:d35e3d10 r5:e5478264 r4:dd9e4380
[ 82.669484] r3:d1d0fea0
[ 82.672093] [<c0054880>] (do_page_fault+0x0/0x34c) from [<c004553c>] (do_DataAbort+0x38/0xa0)
[ 82.680609] [<c0045504>] (do_DataAbort+0x0/0xa0) from [<c004b210>] (__dabt_svc+0x70/0xa0)
[ 82.688763] Exception stack(0xd1d0fea0 to 0xd1d0fee8)
[ 82.693802] fea0: c09b6bb8 a0000013 00000000 e5478264 40044c01 00000001 dd9e3030 00000003
[ 82.701961] fec0: 00000000 d1d0e000 00000000 d1d0fefc d1d0fed0 d1d0fee8 c0058e80 c04f86d0
[ 82.710121] fee0: 60000013 ffffffff
[ 82.713578] r8:00000000 r7:00000003 r6:dd9e3030 r5:00000007 r4:0000040f
[ 82.720268] [<c04f8614>] (led_ioctl+0x0/0xf8) from [<c0156778>] (do_vfs_ioctl+0x8c/0x624)
[ 82.728431] r4:d41e8000 r3:c04f8614
[ 82.731984] [<c01566ec>] (do_vfs_ioctl+0x0/0x624) from [<c0156d8c>] (sys_ioctl+0x7c/0x84)
[ 82.740155] [<c0156d10>] (sys_ioctl+0x0/0x84) from [<c004b940>] (ret_fast_syscall+0x0/0x30)
[ 82.748481] r8:c004bac4 r7:00000036 r6:00000001 r5:00000003 r4:00000001
[ 82.755168] CPU0: stopping
[ 82.757846] Backtrace:
[ 82.760284] [<c004f618>] (dump_backtrace+0x0/0x10c) from [<c069b740>] (dump_stack+0x18/0x1c)
[ 82.768696] r6:00000000 r5:00000000 r4:c0044194 r3:00000000
[ 82.774343] [<c069b728>] (dump_stack+0x0/0x1c) from [<c004544c>] (do_IPI+0x1ec/0x224)
[ 82.782155] [<c0045260>] (do_IPI+0x0/0x224) from [<c004b2c0>] (__irq_svc+0x80/0x160)
[ 82.789876] Exception stack(0xc08e9ee0 to 0xc08e9f28)
[ 82.794913] 9ee0: fffffff8 12e764f3 00000052 000b84fc c09b704c c18b91d8 c08e8000 c09213bc
[ 82.803072] 9f00: 00000000 c0a18638 c18b91e8 c08e9f54 00000052 c08e9f28 c00b0fec c00604c8
[ 82.811229] 9f20: 80000013 ffffffff
[ 82.814700] r8:00000001 r7:00000002 r6:00000806 r5:fe810000 r4:ffffffff
[ 82.821210] r3:80000013
[ 82.823822] [<c006048c>] (exynos4_enter_idle+0x0/0x16c) from [<c04c32e4>] (cpuidle_idle_call+0xd4/0x304)
[ 82.833275] r6:c08e8000 r5:c18b91d8 r4:c18b91d8
[ 82.837880] [<c04c3210>] (cpuidle_idle_call+0x0/0x304) from [<c004c7f0>] (cpu_idle+0xc4/0x104)
[ 82.846473] [<c004c72c>] (cpu_idle+0x0/0x104) from [<c0692568>] (rest_init+0xa0/0xa4)
[ 82.854281] r7:c18b6180 r6:c003b934 r5:00000000 r4:c08e8000
[ 82.859928] [<c06924c8>] (rest_init+0x0/0xa4) from [<c000898c>] (start_kernel+0x2ac/0x2fc)
[ 82.868169] r4:c0919664 r3:00000000
[ 82.871732] [<c00086e0>] (start_kernel+0x0/0x2fc) from [<40008044>] (0x40008044)
[ 82.879107] CPU1: stopping
[ 82.881797] Backtrace:
[ 82.884235] [<c004f618>] (dump_backtrace+0x0/0x10c) from [<c069b740>] (dump_stack+0x18/0x1c)
[ 82.892647] r6:00000001 r5:00000000 r4:c0044194 r3:00000000
[ 82.898293] [<c069b728>] (dump_stack+0x0/0x1c) from [<c004544c>] (do_IPI+0x1ec/0x224)
[ 82.906105] [<c0045260>] (do_IPI+0x0/0x224) from [<c004b2c0>] (__irq_svc+0x80/0x160)
[ 82.913827] Exception stack(0xde46bf10 to 0xde46bf58)
[ 82.918862] bf00: fffffff8 12e764ec 00000052 000b84fb
[ 82.927022] bf20: c09b704c c18c11d8 de46a000 c09213bc 00000001 c0a18638 c18c11e8 de46bf84
[ 82.935181] bf40: 00000052 de46bf58 c00b0fec c00604c8 80000013 ffffffff
[ 82.941775] r8:00000001 r7:00000002 r6:00000806 r5:fe814000 r4:ffffffff
[ 82.948285] r3:80000013
[ 82.950895] [<c006048c>] (exynos4_enter_idle+0x0/0x16c) from [<c04c32e4>] (cpuidle_idle_call+0xd4/0x304)
[ 82.960351] r6:de46a000 r5:c18c11d8 r4:c18c11d8
[ 82.964955] [<c04c3210>] (cpuidle_idle_call+0x0/0x304) from [<c004c7f0>] (cpu_idle+0xc4/0x104)
[ 82.973548] [<c004c72c>] (cpu_idle+0x0/0x104) from [<c0698788>] (secondary_start_kernel+0x118/0x134)
[ 82.982658] r7:c09b6a50 r6:10c0387d r5:00000001 r4:de46a000
[ 82.988304] [<c0698670>] (secondary_start_kernel+0x0/0x134) from [<40698134>] (0x40698134)
[ 82.996546] r5:00000015 r4:536ac06a
[ 83.000108] Rebooting in 5 seconds..
已话联系有善之臂技术支持，无人接听。只能发邮件，等回复。问题等待完结，也希望广大网友提供有意见。
安卓应用层，app通过jni打开/dev下的自己写的LED设备驱动文件，进行读写操作。能控制核心板上的4个LED灯亮灭。当把linux内核LED驱动中的针脚地址从GPM4_0改为GPJ1_5(也就是PCB板上的com10，连接CMOS CAMERA)或其他口，试图通过这个针脚直接点亮我外接的一个LED灯时，安卓系统卡住了，卡了约2到3秒的样子，安卓系统重启了。
问题未知[备注：外设板为友善之臂4412增强版]
问题猜测：由于光linux系统，没安卓系统时，所有的外设接口都是可以单独驱动的。但上了安卓就不能控制。可能是安卓里有相应的驱动已经占用掉了这些外设针脚。详细原因有待深究。
最后的妥协方案：几乎所有的外设针脚都试了一遍，发现位于SDWIFI那排最后的带“SPI”的那4个针脚可以拓展为GPio，并可以通过安卓系统通过jni来控制。
以下是我的问题全部信息，以备查询。
LED驱动部分：
Led_demo.h
#ifndef __LED_DEMO_H__
#define __LED_DEMO_H__
#include <linux/cdev.h>
#define LED_ON _IOW('L', 0, int)
#define LED_OFF _IOW('L', 1, int)
#define LED_DEMO_DEVICE_NODE_NAME "led_demo"
#define LED_DEMO_DEVICE_CLASS_NAME "led_demo"
#define LED_DEMO_DEVICE_FILE_NAME "led_demo"
#define EXYNOS4412_GPJ1CON 0x11400260
#define EXYNOS4412_GPJ1DAT 0x11400264
struct led_demo_dev
{
struct cdev dev;
};
#endif
Led_demo.c
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <mach/gpio.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include "led_demo.h"
static int led_demo_major;
static int led_demo_minor;
static int number_of_dev = 1;
static dev_t dev;
static struct led_demo_dev *led_dev = NULL;
static unsigned int *gpj1con = NULL;
static unsigned int *gpj1dat = NULL;
static struct class *led_demo_class = NULL;
static int led_open (struct inode *node, struct file *fops)
{
struct led_demo_dev *dev;
dev = container_of(node->i_cdev, struct led_demo_dev, dev);
fops->private_data = dev;
return 0;
}
static int led_close (struct inode *node, struct file *fops)
{
return 0;
}
static long led_ioctl (struct file *fops, unsigned int cmd, unsigned long data)
{
//struct led_demo_dev * led_dev = (struct led_demo_dev *)fops->private_data;
switch (cmd)
{
case LED_ON:
*gpj1dat &= ~(1<<1);
break;
case LED_OFF:
*gpj1dat |= 1<<1;
break;
default:
return -EINVAL;
break;
}
return 0;
}
struct file_operations led_fops =
{
.owner = THIS_MODULE,
.open = led_open,
.unlocked_ioctl = led_ioctl,
.release = led_close,
};
static int __led_setup_dev(struct led_demo_dev * dev)
{
int err = -1;
dev_t devno = MKDEV(led_demo_major, led_demo_minor);
memset(dev, 0, sizeof(struct led_demo_dev));
cdev_init(&(dev->dev), &led_fops);
dev->dev.owner = THIS_MODULE;
err = cdev_add(&(dev->dev), devno, number_of_dev);
if(err < 0)
{
return err;
}
return 0;
}
static int led_demo_init(void)
{
int err = -1;
struct device *temp = NULL;
printk(KERN_ALERT"Initializing led demo device.\n");
err = alloc_chrdev_region(&dev, 0, number_of_dev, LED_DEMO_DEVICE_NODE_NAME);
if(err < 0)
{
printk(KERN_ALERT"fail to alloc char dev region.\n");
goto fail;
}
led_demo_major = MAJOR(dev);
led_demo_minor = MINOR(dev);
led_dev = kmalloc(sizeof(struct led_demo_dev), GFP_KERNEL);
if(!led_dev)
{
err = -ENOMEM;
printk(KERN_ALERT"Failed to alloc led device.\n");
goto unregister;
}
err = __led_setup_dev(led_dev);
if (err < 0)
{
printk(KERN_ALERT"Failed to setup led device.\n");
goto clean_up;
}
gpj1con= (unsigned int *)ioremap(EXYNOS4412_GPJ1CON, 4);
if(!gpj1con)
{
err = -ENOMEM;
goto destroy_cdev;
}
gpj1dat = (unsigned int *)ioremap(EXYNOS4412_GPJ1DAT, 4);
if(!gpj1dat)
{
err = -ENOMEM;
goto unmap1;
}
*gpj1con &=~ (0xf<<(1*4));
*gpj1con |= 0x1<<(1*4);
led_demo_class = class_create(THIS_MODULE, LED_DEMO_DEVICE_CLASS_NAME);
temp = device_create(led_demo_class, NULL, dev, NULL, "%s", LED_DEMO_DEVICE_FILE_NAME);
iounmap(gpj1dat);
iounmap(gpj1con);
if(IS_ERR(temp))
{
err = PTR_ERR(temp);
printk(KERN_ALERT"Failed to create led demo device.\n");
goto destroy_class;
}
dev_set_drvdata(temp, (void *)led_dev);
printk(KERN_ALERT"Succeed to initialize led demo device.\n");
return 0;
destroy_class:
class_destroy(led_demo_class);
unmap1:
iounmap(gpj1con);
destroy_cdev:
cdev_del(&(led_dev->dev));
clean_up:
kfree(led_dev);
unregister:
unregister_chrdev_region(MKDEV(led_demo_major, led_demo_minor), number_of_dev);
fail:
return err;
}
static void led_demo_exit(void)
{
if(led_demo_class)
{
device_destroy(led_demo_class, MKDEV(led_demo_major, led_demo_minor));
class_destroy(led_demo_class);
}
iounmap(gpj1dat);
iounmap(gpj1con);
if(led_dev)
{
cdev_del(&(led_dev->dev));
kfree(led_dev);
}
unregister_chrdev_region(MKDEV(led_demo_major, led_demo_minor), number_of_dev);
}
module_init(led_demo_init);
module_exit(led_demo_exit);
MODULE_LICENSE("GPL");
安卓应用jni层：
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <string.h>
#include <jni.h>
#include <errno.h>
//#include <utils/Log.h>
//#include <ALog.h>
#include <android/log.h>
#define OFF 0x11
#define ON 0x22
#define LED_OFF _IOW('L',1,int)
#define LED_ON _IOW('L',0,int)
#define READ 0x33
#define DEV_NAME "/dev/led_demo"
#define LOG_TAG "LedLog"
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
int fd;
jint Java_com_szx_ledkz_Ledkz_openled(JNIEnv* env, jobject obj){
fd=open(DEV_NAME,O_RDWR);
/* if(fd<0){
LOGI("没有打开文件"); //其中1$为java的String类的format需要加上的.其他的写法和C语言一致
}else{
LOGI("文件已打开，fd为%d",fd);
}
*/
return fd;
}
jint Java_com_szx_ledkz_Ledkz_closeled(JNIEnv* env, jobject obj){
int ret;
ret = close(fd);
return ret;
}
jint Java_com_szx_ledkz_Ledkz_ioctl(JNIEnv* env, jobject obj,jint fd,jint controlcode,jint ledid){
int CTLCODE = controlcode;
int value =-1;
switch(CTLCODE)
{ case ON:
{
ioctl(fd,LED_ON,ledid);//setLedState( 0, 1 );//调用驱动程序中的ioctrl接口，把命令传下去，实现硬件操作
break;
}
case OFF:
{
ioctl(fd,LED_OFF,ledid);//// setLedState( 0, 0 );//调用驱动程序中的ioctrl接口，把命令传下去，实现硬件操作
break;
}
case READ:
{
value=ioctl(fd,3,ledid);// 2 表示读取状态的cmd；0、1表示led控制的命令；
return value;
break;
}
default:break;
}
return 0;
}
后面会有完整led_demo示例app工程。请用eclipse打开。
http://download.csdn.net/detail/bilifo/9367680
完整的重启信息：
shell@tiny4412:/ $ cd system/bin/
shell@tiny4412:/system/bin $ ./led_demo_test
[ 81.703033] type=1400 audit(81.695:11): avc: denied { read write } for pid=3961 comm="led_demo_test" name="led_demo" dev=tmpfs ino=3340 scontext=u:r:shell:s0 tcontext=u:object_r:device:s0 tclass=chr_file
[ 81.703693] type=1400 audit(81.695:12): avc: denied { open } for pid=3961 comm="led_demo_test" name="led_demo" dev=tmpfs ino=3340 scontext=u:r:shell:s0 tcontext=u:object_r:device:s0 tclass=chr_file
[ 81.716586] open----open----open----open----open----
[ 81.721366] ioctl----ioctl----ioctl----ioctl----
[ 81.725917] 1074023425type=1400 audit(81.720:13): avc: denied { ioctl } for pid=3961 comm="led_demo_test" path="/dev/led_demo" dev=tmpfs ino=3340 scontext=u:r:shell:s0 tcontext=u:object_r:device:s0 tclass=chr_file
[ 81.744851] ioctlLED_OFF----ioctlLED_OFF----ioctlLED_OFF----ioctlLED_OFF----
[ 81.751978] Unable to handle kernel paging request at virtual address e5478264
[ 81.760756] pgd = d1d20000
[ 81.761834] [e5478264] *pgd=5e7f3811, *pte=00000000, *ppte=00000000
[ 81.769356] Internal error: Oops: 7 [#1] PREEMPT SMP
[ 81.772928] Modules linked in: compat snd_soc_tiny4412_wm8960 snd_soc_wm8960
[ 81.779960] CPU: 2 Not tainted (3.0.86-FriendlyARM #25)
[ 81.785521] PC is at led_ioctl+0xbc/0xf8
[ 81.789423] LR is at l2x0_cache_sync+0x38/0x3c
[ 81.793848] pc : [<c04f86d0>] lr : [<c0058e80>] psr: 60000013
[ 81.793851] sp : d1d0fee8 ip : d1d0fed0 fp : d1d0fefc
[ 81.805303] r10: 00000000 r9 : d1d0e000 r8 : 00000000
[ 81.810512] r7 : 00000003 r6 : dd9e3030 r5 : 00000001 r4 : 40044c01
[ 81.817022] r3 : e5478264 r2 : 00000000 r1 : a0000013 r0 : c09b6bb8
[ 81.823533] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 81.830649] Control: 10c5387d Table: 51d2004a DAC: 00000015
[ 81.836378]
[ 81.836379] PC: 0xc04f8650:
[ 81.840630] 8650 e1540003 0a000013 e3e00015 e89da818 e59f0090 eb068ca4 f57ff04f e59f3088
[ 81.848789] 8670 e593301c e3530000 0a000000 e12fff33 e59f3078 e5933000 e5932000 f57ff04f
[ 81.856949] 8690 e3c22002 e5832000 e59f0064 eb068c96 e3a00000 e89da818 e59f0058 eb068c92
[ 81.865108] 86b0 f57ff04f e59f3040 e593301c e3530000 0a000000 e12fff33 e59f3030 e5933000
[ 81.873267] 86d0 e5932000 f57ff04f e3822002 e5832000 e59f001c eb068c84 e3a00000 e89da818
[ 81.881426] 86f0 c08a429c c0837020 c08a42c4 c09188cc c0dd9384 c08a4348 c08a4304 e1a0c00d
[ 81.889585] 8710 e92dd9f0 e24cb004 e24dd00c e59f4214 e59f0214 eb068c74 e2840004 e3a01000
[ 81.897744] 8730 e3a02001 e59f3204 ebf144a6 e2506000 ba000074 e59f31f8 e5947004 e5930018
[ 81.905904]
[ 81.905906] LR: 0xc0058e00:
[ 81.910157] 8e00 e59f0008 eb1918d9 e89da818 c09b6bb0 c09b6bb8 e1a0c00d e92dd830 e24cb004
[ 81.918316] 8e20 e59f401c e1a00004 eb19199c e1a05000 ebffffc2 e1a00004 e1a01005 eb1918cb
[ 81.926475] 8e40 e89da830 c09b6bb8 e1a0c00d e92dd830 e24cb004 e3064bb0 e34c409b e2845008
[ 81.934634] 8e60 e1a00005 eb19198d e5943000 e3a02000 e1a01000 e5832730 e1a00005 eb1918bb
[ 81.942793] 8e80 e89da830 e1a0c00d e92dd878 e24cb004 e59f60a0 e0602001 e5963010 e1a04000
[ 81.950953] 8ea0 e1520003 e1a05001 2a000020 e2860008 eb19197a e3c4401f e1a01000 e1550004
[ 81.959112] 8ec0 9a000014 e0643005 e3530a01 90843003 82843a01 e1530004 9a000005 e5962000
[ 81.967271] 8ee0 e2822e7f e5824000 e2844020 e1530004 8afffffb e1550003 9affffef e59f0038
[ 81.975431]
[ 81.975433] SP: 0xd1d0fe68:
[ 81.979684] fe68 00000000 ffffffff 00000001 00000000 d1d0fec4 0000040f 00000007 dd9e3030
[ 81.987843] fe88 00000003 00000000 d1d0fefc d1d0fea0 c004b210 c0045510 c09b6bb8 a0000013
[ 81.996002] fea8 00000000 e5478264 40044c01 00000001 dd9e3030 00000003 00000000 d1d0e000
[ 82.004161] fec8 00000000 d1d0fefc d1d0fed0 d1d0fee8 c0058e80 c04f86d0 60000013 ffffffff
[ 82.012321] fee8 c04f8614 d41e8000 d1d0ff74 d1d0ff00 c0156778 c04f8620 00000025 0000000a
[ 82.020480] ff08 00000001 00000001 00000001 00000000 00000000 00000000 c022ac48 c022ad70
[ 82.028639] ff28 00000003 d41e8000 00000001 40044c01 00000003 c004bac4 d1d0e000 00000000
[ 82.036798] ff48 d1d0ff64 d1d0ff58 d41e8000 00000001 40044c01 00000003 00000000 00000000
[ 82.044958]
[ 82.044959] IP: 0xd1d0fe50:
[ 82.049210] fe50 d1d0fe64 2020205b 372e3138 35383434 00205d31 00040006 00000000 ffffffff
[ 82.057370] fe70 00000001 00000000 d1d0fec4 0000040f 00000007 dd9e3030 00000003 00000000
[ 82.065529] fe90 d1d0fefc d1d0fea0 c004b210 c0045510 c09b6bb8 a0000013 00000000 e5478264
[ 82.073688] feb0 40044c01 00000001 dd9e3030 00000003 00000000 d1d0e000 00000000 d1d0fefc
[ 82.081847] fed0 d1d0fed0 d1d0fee8 c0058e80 c04f86d0 60000013 ffffffff c04f8614 d41e8000
[ 82.090007] fef0 d1d0ff74 d1d0ff00 c0156778 c04f8620 00000025 0000000a 00000001 00000001
[ 82.098166] ff10 00000001 00000000 00000000 00000000 c022ac48 c022ad70 00000003 d41e8000
[ 82.106325] ff30 00000001 40044c01 00000003 c004bac4 d1d0e000 00000000 d1d0ff64 d1d0ff58
[ 82.114484]
[ 82.114486] FP: 0xd1d0fe7c:
[ 82.118737] fe7c 0000040f 00000007 dd9e3030 00000003 00000000 d1d0fefc d1d0fea0 c004b210
[ 82.126897] fe9c c0045510 c09b6bb8 a0000013 00000000 e5478264 40044c01 00000001 dd9e3030
[ 82.135056] febc 00000003 00000000 d1d0e000 00000000 d1d0fefc d1d0fed0 d1d0fee8 c0058e80
[ 82.143215] fedc c04f86d0 60000013 ffffffff c04f8614 d41e8000 d1d0ff74 d1d0ff00 c0156778
[ 82.151374] fefc c04f8620 00000025 0000000a 00000001 00000001 00000001 00000000 00000000
[ 82.159533] ff1c 00000000 c022ac48 c022ad70 00000003 d41e8000 00000001 40044c01 00000003
[ 82.167693] ff3c c004bac4 d1d0e000 00000000 d1d0ff64 d1d0ff58 d41e8000 00000001 40044c01
[ 82.175852] ff5c 00000003 00000000 00000000 d1d0ffa4 d1d0ff78 c0156d8c c01566f8 00000001
[ 82.184011]
[ 82.184013] R0: 0xc09b6b38:
[ 82.188264] 6b38 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 82.196423] 6b58 00000000 00000000 00000000 00000000 00000000 64000000 0000041f 0000045f
[ 82.204582] 6b78 c0007ff8 c1485ac0 00000004 00000000 00000000 00000000 00000000 00000000
[ 82.212742] 6b98 00000000 00000000 00000000 00000000 047e047e 00000000 fe600000 0000ffff
[ 82.220901] 6bb8 eec2eec2 00000000 00100000 4100c4c8 00000010 00000800 00000000 00000000
[ 82.229060] 6bd8 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 82.237219] 6bf8 00000000 00000000 00000000 c006851c 00000000 00000000 00000000 00000000
[ 82.245378] 6c18 00000000 00000000 00000000 00000000 00000000 009f009f 00000000 00000000
[ 82.253538]
[ 82.253540] R3: 0xe54781e4:
[ 82.257791] 81e4 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.265950] 8204 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.274109] 8224 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.282268] 8244 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.290428] 8264 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.298587] 8284 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.306746] 82a4 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.314905] 82c4 ******** ******** ******** ******** ******** ******** ******** ********
[ 82.323065]
[ 82.323067] R6: 0xdd9e2fb0:
[ 82.327318] 2fb0 00000000 00000000 dd9e2fc0 00000000 00010001 00000000 00200000 00000000
[ 82.335477] 2fd0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 82.343636] 2ff0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 82.351795] 3010 00000000 00000000 00000000 dd9e301c dd9e301c dd9e3024 dd9e3024 00000000
[ 82.359954] 3030 000021b6 00000000 00000000 c06a7b00 dd8f0000 00050005 00000000 00000000
[ 82.368114] 3050 00000000 dd8c4c78 00000001 00020002 00000000 dd9e3064 dd9e3064 00000000
[ 82.376273] 3070 00000000 dd9e3058 00000000 00000000 00000000 dd9e3084 dd9e3084 dd9e308c
[ 82.384432] 3090 dd9e308c dd9e2e9c dd9e328c de2e0764 de2e0764 00000d0c 00000001 00000001
[ 82.392592]
[ 82.392593] R9: 0xd1d0df80:
[ 82.396844] df80 1ce3206e 000a0010 0aae3059 0aac3054 206e1112 00101ce3 3059000a 30540aaf
[ 82.405004] dfa0 51120aac 1ce3206e 000a0010 0aad3059 0000000e 00020003 00000000 00100853
[ 82.413163] dfc0 0000000d 0aaf2052 0aaf1059 0aae2052 0aae1059 0aad2052 0aad1059 0000000e
[ 82.421322] dfe0 00040004 00000000 0010085d 00000007 0aaf0159 0aae0259 0aad0359 0000000e
[ 82.429481] e000 00000000 00000002 00000000 d36e1e00 c09399e0 00000002 00000015 d36e1e00
[ 82.437641] e020 c18ba700 d1d0e000 de448f00 00000000 dd9e4380 00000a09 d1d0fc24 d1d0fb68
[ 82.445800] e040 c069c114 00000000 00000000 00000000 00000000 00000000 01010000 00000000
[ 82.453959] e060 401be10c 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 82.462120] Process led_demo_test (pid: 3961, stack limit = 0xd1d0e2f0)
[ 82.468716] Stack: (0xd1d0fee8 to 0xd1d10000)
[ 82.473058] fee0: c04f8614 d41e8000 d1d0ff74 d1d0ff00 c0156778 c04f8620
[ 82.481217] ff00: 00000025 0000000a 00000001 00000001 00000001 00000000 00000000 00000000
[ 82.489377] ff20: c022ac48 c022ad70 00000003 d41e8000 00000001 40044c01 00000003 c004bac4
[ 82.497536] ff40: d1d0e000 00000000 d1d0ff64 d1d0ff58 d41e8000 00000001 40044c01 00000003
[ 82.505695] ff60: 00000000 00000000 d1d0ffa4 d1d0ff78 c0156d8c c01566f8 00000001 00000000
[ 82.513854] ff80: c004bac4 00000001 00000003 00000001 00000036 c004bac4 00000000 d1d0ffa8
[ 82.522013] ffa0: c004b940 c0156d1c 00000001 00000003 00000003 40044c01 00000001 bebce988
[ 82.530172] ffc0: 00000001 00000003 00000001 00000036 00000000 00000000 00000000 bebce9cc
[ 82.538332] ffe0: 400f8391 bebce978 4014cc69 401353d4 000f0010 00000003 000f2470 000f7689
[ 82.546488] Backtrace:
[ 82.548926] [<c04f8614>] (led_ioctl+0x0/0xf8) from [<c0156778>] (do_vfs_ioctl+0x8c/0x624)
[ 82.557078] r4:d41e8000 r3:c04f8614
[ 82.560640] [<c01566ec>] (do_vfs_ioctl+0x0/0x624) from [<c0156d8c>] (sys_ioctl+0x7c/0x84)
[ 82.568803] [<c0156d10>] (sys_ioctl+0x0/0x84) from [<c004b940>] (ret_fast_syscall+0x0/0x30)
[ 82.577129] r8:c004bac4 r7:00000036 r6:00000001 r5:00000003 r4:00000001
[ 82.583815] Code: 0a000000 e12fff33 e59f3030 e5933000 (e5932000)
[ 82.590156] ---[ end trace 7eca82fcf33a1de4 ]---
[ 82.594490] Kernel panic - not syncing: Fatal exception
[ 82.599707] Backtrace:
[ 82.602138] [<c004f618>] (dump_backtrace+0x0/0x10c) from [<c069b740>] (dump_stack+0x18/0x1c)
[ 82.610562] r6:d36e1e00 r5:00000001 r4:c09b9540 r3:00000000
[ 82.616194] [<c069b728>] (dump_stack+0x0/0x1c) from [<c069b7bc>] (panic+0x78/0x1b8)
[ 82.623843] [<c069b744>] (panic+0x0/0x1b8) from [<c004fbd0>] (die+0x190/0x1c0)
[ 82.631041] r3:00000001 r2:d1d0fca0 r1:60000113 r0:c081c3b0
[ 82.636673] r7:00000007
[ 82.639196] [<c004fa40>] (die+0x0/0x1c0) from [<c0054860>] (__do_kernel_fault+0x6c/0x8c)
[ 82.647275] r8:dd9e4380 r7:00000007 r6:00000000 r5:e5478264 r4:d1d0fea0
[ 82.653952] [<c00547f4>] (__do_kernel_fault+0x0/0x8c) from [<c0054a24>] (do_page_fault+0x1a4/0x34c)
[ 82.662986] r8:d1d0fea0 r7:00000007 r6:d35e3d10 r5:e5478264 r4:dd9e4380
[ 82.669484] r3:d1d0fea0
[ 82.672093] [<c0054880>] (do_page_fault+0x0/0x34c) from [<c004553c>] (do_DataAbort+0x38/0xa0)
[ 82.680609] [<c0045504>] (do_DataAbort+0x0/0xa0) from [<c004b210>] (__dabt_svc+0x70/0xa0)
[ 82.688763] Exception stack(0xd1d0fea0 to 0xd1d0fee8)
[ 82.693802] fea0: c09b6bb8 a0000013 00000000 e5478264 40044c01 00000001 dd9e3030 00000003
[ 82.701961] fec0: 00000000 d1d0e000 00000000 d1d0fefc d1d0fed0 d1d0fee8 c0058e80 c04f86d0
[ 82.710121] fee0: 60000013 ffffffff
[ 82.713578] r8:00000000 r7:00000003 r6:dd9e3030 r5:00000007 r4:0000040f
[ 82.720268] [<c04f8614>] (led_ioctl+0x0/0xf8) from [<c0156778>] (do_vfs_ioctl+0x8c/0x624)
[ 82.728431] r4:d41e8000 r3:c04f8614
[ 82.731984] [<c01566ec>] (do_vfs_ioctl+0x0/0x624) from [<c0156d8c>] (sys_ioctl+0x7c/0x84)
[ 82.740155] [<c0156d10>] (sys_ioctl+0x0/0x84) from [<c004b940>] (ret_fast_syscall+0x0/0x30)
[ 82.748481] r8:c004bac4 r7:00000036 r6:00000001 r5:00000003 r4:00000001
[ 82.755168] CPU0: stopping
[ 82.757846] Backtrace:
[ 82.760284] [<c004f618>] (dump_backtrace+0x0/0x10c) from [<c069b740>] (dump_stack+0x18/0x1c)
[ 82.768696] r6:00000000 r5:00000000 r4:c0044194 r3:00000000
[ 82.774343] [<c069b728>] (dump_stack+0x0/0x1c) from [<c004544c>] (do_IPI+0x1ec/0x224)
[ 82.782155] [<c0045260>] (do_IPI+0x0/0x224) from [<c004b2c0>] (__irq_svc+0x80/0x160)
[ 82.789876] Exception stack(0xc08e9ee0 to 0xc08e9f28)
[ 82.794913] 9ee0: fffffff8 12e764f3 00000052 000b84fc c09b704c c18b91d8 c08e8000 c09213bc
[ 82.803072] 9f00: 00000000 c0a18638 c18b91e8 c08e9f54 00000052 c08e9f28 c00b0fec c00604c8
[ 82.811229] 9f20: 80000013 ffffffff
[ 82.814700] r8:00000001 r7:00000002 r6:00000806 r5:fe810000 r4:ffffffff
[ 82.821210] r3:80000013
[ 82.823822] [<c006048c>] (exynos4_enter_idle+0x0/0x16c) from [<c04c32e4>] (cpuidle_idle_call+0xd4/0x304)
[ 82.833275] r6:c08e8000 r5:c18b91d8 r4:c18b91d8
[ 82.837880] [<c04c3210>] (cpuidle_idle_call+0x0/0x304) from [<c004c7f0>] (cpu_idle+0xc4/0x104)
[ 82.846473] [<c004c72c>] (cpu_idle+0x0/0x104) from [<c0692568>] (rest_init+0xa0/0xa4)
[ 82.854281] r7:c18b6180 r6:c003b934 r5:00000000 r4:c08e8000
[ 82.859928] [<c06924c8>] (rest_init+0x0/0xa4) from [<c000898c>] (start_kernel+0x2ac/0x2fc)
[ 82.868169] r4:c0919664 r3:00000000
[ 82.871732] [<c00086e0>] (start_kernel+0x0/0x2fc) from [<40008044>] (0x40008044)
[ 82.879107] CPU1: stopping
[ 82.881797] Backtrace:
[ 82.884235] [<c004f618>] (dump_backtrace+0x0/0x10c) from [<c069b740>] (dump_stack+0x18/0x1c)
[ 82.892647] r6:00000001 r5:00000000 r4:c0044194 r3:00000000
[ 82.898293] [<c069b728>] (dump_stack+0x0/0x1c) from [<c004544c>] (do_IPI+0x1ec/0x224)
[ 82.906105] [<c0045260>] (do_IPI+0x0/0x224) from [<c004b2c0>] (__irq_svc+0x80/0x160)
[ 82.913827] Exception stack(0xde46bf10 to 0xde46bf58)
[ 82.918862] bf00: fffffff8 12e764ec 00000052 000b84fb
[ 82.927022] bf20: c09b704c c18c11d8 de46a000 c09213bc 00000001 c0a18638 c18c11e8 de46bf84
[ 82.935181] bf40: 00000052 de46bf58 c00b0fec c00604c8 80000013 ffffffff
[ 82.941775] r8:00000001 r7:00000002 r6:00000806 r5:fe814000 r4:ffffffff
[ 82.948285] r3:80000013
[ 82.950895] [<c006048c>] (exynos4_enter_idle+0x0/0x16c) from [<c04c32e4>] (cpuidle_idle_call+0xd4/0x304)
[ 82.960351] r6:de46a000 r5:c18c11d8 r4:c18c11d8
[ 82.964955] [<c04c3210>] (cpuidle_idle_call+0x0/0x304) from [<c004c7f0>] (cpu_idle+0xc4/0x104)
[ 82.973548] [<c004c72c>] (cpu_idle+0x0/0x104) from [<c0698788>] (secondary_start_kernel+0x118/0x134)
[ 82.982658] r7:c09b6a50 r6:10c0387d r5:00000001 r4:de46a000
[ 82.988304] [<c0698670>] (secondary_start_kernel+0x0/0x134) from [<40698134>] (0x40698134)
[ 82.996546] r5:00000015 r4:536ac06a
[ 83.000108] Rebooting in 5 seconds..
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