Sam Fei (email: [email protected])
最新內核編譯 2 這個編譯器不支持.incbin的緣故, 下載新的編譯器 2 現在注釋掉gettimeoffset = s3c44b0x_gettimeoffset後,編譯: 3 注釋掉MOD_DEC_USE_COUNT和MOD_INC_USE_COUNT 3 2.6.9內核 5 開始動手 5 沒有內核映象文件 6 修改Makefile,增加bzImage 6 還是沒有希望的映象出現. 和2.4內核編譯的Makefile進行比較: 7 修改Makefile,增加linux,images 7 運行試試看 8 修正RAM和FLASH地址問題 9 增加romfs 10 編譯,運行 11 檢查romfs/bin, 缺省配置的命令太少了. 12 增加了命令配置,重新編譯,但好像內核映象沒有改變.但命令確實編譯出來了 12 增加串口驅動 13 增加了串口驅動,錯誤依然.應該跟串口驅動沒有關系了. 15 Panic錯誤原因 17 串口驅動波特率問題 24 去除簡易串口驅動配置 24 2個sh 27 串口正常後提示信息,第一階段完成 27 最後說明 29
開發板: Micetek EV44B0-II board, CPU:S3C44B0X RAM:8M FLASH:2M SMSC LAN91C113網卡.
S3C44B0 CPU 2.6內核的官方網站是http://opensrc.sec.samsung.com/, 看了網站的資料後,我們首先要做的就是下載最新的內核來試試看.其中下面的文章值得一讀. http://opensrc.sec.samsung.com/document/Getting_Familiar_with_uClinuxARM2_6.html
最新內核編譯 http://opensrc.sec.samsung.com/下載補丁linux-2.6.11.8-hsc0.patch.gz www.kernel.org下載linux-2.6.11.8.tar.gz. [root@samfei ]# tar zxvf linux-2.6.11.8.tar.gz [root@samfei ]# cd linux-2.6.11.8 [root@samfei linux-2.6.11.8]# patch -p1 < ../linux-2.6.11.8-hsc0.patch [root@samfei linux-2.6.11.8]# ARCH=arm CROSS_COMPILE=arm-elf- make menuconfig [root@samfei linux-2.6.11.8]# ARCH=arm CROSS_COMPILE=arm-elf- make CC arch/arm/kernel/asm-offsets.s In file included from arch/arm/kernel/asm-offsets.c:13: include/linux/sched.h: In function `arch_pick_mmap_layout': include/linux/sched.h:1174: `TASK_UNMAPPED_BASE' undeclared (first use in this function) include/linux/sched.h:1174: (Each undeclared identifier is reported only once include/linux/sched.h:1174: for each function it appears in.) make[1]: *** [arch/arm/kernel/asm-offsets.s] Error 1 make: *** [arch/arm/kernel/asm-offsets.s] Error 2 include/asm/arch/memory.h中增加TASK_UNMAPPED_BASE定義 [root@samfei linux-2.6.11.8]# ARCH=arm CROSS_COMPILE=arm-elf- make usr/initramfs_data.S: Assembler messages: usr/initramfs_data.S:29: Error: Unknown pseudo-op: `.incbin' make[1]: *** [usr/initramfs_data.o] Error 1 make: *** [usr] Error 2
這個編譯器不支持.incbin的緣故, 下載新的編譯器 我現在使用的是arm-elf-tools-20030314.sh.下載新的編譯器: http://opensrc.sec.samsung.com/download/arm-elf-tools-20040427.sh 並安裝後,重新編譯:
[root@samfei linux-2.6.11.8]# ARCH=arm CROSS_COMPILE=arm-elf- make arch/arm/mach-s3c44b0x/time.c: In function `s3c44b0x_time_init': arch/arm/mach-s3c44b0x/time.c:95: `gettimeoffset' undeclared (first use in this function) arch/arm/mach-s3c44b0x/time.c:95: (Each undeclared identifier is reported only once arch/arm/mach-s3c44b0x/time.c:95: for each function it appears in.) arch/arm/mach-s3c44b0x/time.c:99: warning: implicit declaration of function `s3c44b0x_clear_pb' arch/arm/mach-s3c44b0x/time.c:100: warning: implicit declaration of function `s3c44b0x_unmask_irq' make[1]: *** [arch/arm/mach-s3c44b0x/time.o] Error 1 make: *** [arch/arm/mach-s3c44b0x] Error 2 [root@samfei linux-2.6.11.8]#
現在注釋掉gettimeoffset = s3c44b0x_gettimeoffset後,編譯: [root@samfei linux-2.6.11.8]# ARCH=arm CROSS_COMPILE=arm-elf- make CC arch/arm/mach-s3c44b0x/driver/rtl8019.o arch/arm/mach-s3c44b0x/driver/rtl8019.c: In function `nic_8019_open': arch/arm/mach-s3c44b0x/driver/rtl8019.c:218: `MOD_INC_USE_COUNT' undeclared (first use in this function) arch/arm/mach-s3c44b0x/driver/rtl8019.c:218: (Each undeclared identifier is reported only once arch/arm/mach-s3c44b0x/driver/rtl8019.c:218: for each function it appears in.) arch/arm/mach-s3c44b0x/driver/rtl8019.c:216: warning: unused variable `j' arch/arm/mach-s3c44b0x/driver/rtl8019.c: In function `nic_8019_stop': arch/arm/mach-s3c44b0x/driver/rtl8019.c:286: `MOD_DEC_USE_COUNT' undeclared (first use in this function) arch/arm/mach-s3c44b0x/driver/rtl8019.c: In function `nic_8019_start_xmit': arch/arm/mach-s3c44b0x/driver/rtl8019.c:296: warning: unused variable `priv' make[2]: *** [arch/arm/mach-s3c44b0x/driver/rtl8019.o] Error 1 make[1]: *** [arch/arm/mach-s3c44b0x/driver] Error 2 make: *** [arch/arm/mach-s3c44b0x] Error 2 [root@samfei linux-2.6.11.8]#
注釋掉MOD_DEC_USE_COUNT和MOD_INC_USE_COUNT
GEN .version CHK include/linux/compile.h UPD include/linux/compile.h CC init/version.o LD init/built-in.o LD .tmp_vmlinux1 arch/arm/mach-s3c44b0x/built-in.o(.text+0x170): In function `v3_dma_clean_range': : multiple definition of `v3_flush_user_cache_range' arch/arm/mm/built-in.o(.text+0x1480): first defined here arch/arm/mach-s3c44b0x/built-in.o(.text+0x170): In function `v3_dma_clean_range': : multiple definition of `v3_flush_user_cache_all' arch/arm/mm/built-in.o(.text+0x1480): first defined here arch/arm/mach-s3c44b0x/built-in.o(.text+0x170): In function `v3_dma_clean_range': : multiple definition of `v3_coherent_kern_range' arch/arm/mm/built-in.o(.text+0x148c): first defined here arch/arm/mach-s3c44b0x/built-in.o(.init.data+0x0): multiple definition of `v3_cache_fns' arch/arm/mm/built-in.o(.init.data+0x70): first defined here /usr/local/bin/arm-elf-ld.real: Warning: size of symbol `v3_cache_fns' changed from 36 in arch/arm/mm/built-in.o to 32 in arch/arm/mach-s3c44b0x/built-in.o arch/arm/mach-s3c44b0x/built-in.o(.text+0x170): In function `v3_dma_clean_range': : multiple definition of `v3_dma_flush_range' arch/arm/mm/built-in.o(.text+0x1490): first defined here arch/arm/mach-s3c44b0x/built-in.o(.text+0x170): In function `v3_dma_clean_range': : multiple definition of `v3_flush_kern_cache_all' arch/arm/mm/built-in.o(.text+0x1480): first defined here arch/arm/mach-s3c44b0x/built-in.o(.text+0x170): In function `v3_dma_clean_range': : multiple definition of `v3_flush_kern_dcache_page' arch/arm/mm/built-in.o(.text+0x1490): first defined here arch/arm/mach-s3c44b0x/built-in.o(.text+0x170): In function `v3_dma_clean_range': : multiple definition of `v3_dma_inv_range' arch/arm/mm/built-in.o(.text+0x1490): first defined here arch/arm/mach-s3c44b0x/built-in.o(.text+0x170): In function `v3_dma_clean_range': : multiple definition of `v3_dma_clean_range' arch/arm/mm/built-in.o(.text+0x1498): first defined here kernel/built-in.o(.text+0x1cfb4): In function `kallsyms_expand_symbol': : undefined reference to `kallsyms_names' kernel/built-in.o(.text+0x1cfb8): In function `kallsyms_expand_symbol': : undefined reference to `kallsyms_token_index' kernel/built-in.o(.text+0x1cfbc): In function `kallsyms_expand_symbol': : undefined reference to `kallsyms_token_table' kernel/built-in.o(.text+0x1d020): In function `kallsyms_get_symbol_type': : undefined reference to `kallsyms_names' kernel/built-in.o(.text+0x1d024): In function `kallsyms_get_symbol_type': : undefined reference to `kallsyms_token_index' kernel/built-in.o(.text+0x1d028): In function `kallsyms_get_symbol_type': : undefined reference to `kallsyms_token_table' kernel/built-in.o(.text+0x1d07c): In function `get_symbol_offset': : undefined reference to `kallsyms_markers' kernel/built-in.o(.text+0x1d080): In function `get_symbol_offset': : undefined reference to `kallsyms_names' kernel/built-in.o(.text+0x1d0fc): In function `kallsyms_lookup_name': : undefined reference to `kallsyms_num_syms' kernel/built-in.o(.text+0x1d100): In function `kallsyms_lookup_name': : undefined reference to `kallsyms_addresses' kernel/built-in.o(.text+0x1d300): In function `kallsyms_lookup': : undefined reference to `kallsyms_addresses' kernel/built-in.o(.text+0x1d318): In function `kallsyms_lookup': : undefined reference to `kallsyms_num_syms' kernel/built-in.o(.text+0x1d450): In function `get_ksymbol_mod': : undefined reference to `kallsyms_num_syms' kernel/built-in.o(.text+0x1d4a4): In function `get_ksymbol_core': : undefined reference to `kallsyms_addresses' kernel/built-in.o(.text+0x1d570): In function `update_iter': : undefined reference to `kallsyms_num_syms' make: *** [.tmp_vmlinux1] Error 1 [root@samfei linux-2.6.11.8]#
一直不太明白上面的錯誤,實在搞不定了.而且後面試了其他的方法,但都有不定的錯誤.實在不行,於是另尋辦法.
2.6.9內核 經過網上資料的查詢和閱讀,還是覺得2.6.9內核比較容易,因為網站上有2.6.9的uclinux補丁.具體是: http://opensrc.sec.samsung.com/download/linux-2.6.9-uc0-hsc0.patch.gz
因此我們從www.kernel.org上下載了linux-2.6.9.tar.bz2. 從www.uclinux.org上下載了linux-2.6.9-uc0.patch,這樣呢我們就有了3個文件.
-rw-r--r-- 1 root root 36261440 2004-10-19 linux-2.6.9.tar.bz2 -rw-r--r-- 1 root root 357214 2004-11-23 linux-2.6.9-uc0-hsc0.patch -rw-r--r-- 1 root root 1231190 2004-10-28 linux-2.6.9-uc0.patch
然後我們從頭開始做. 另一個需要的就是uclinux-dist包,我們使用uClinux-dist-20041215.tar.gz,因為我們用這個版本已經可以跑2.4內核了.
開始動手 具體我們參考上面文章中提到的方法. 解壓uclinux-dist包: [root@samfei 44b0]# tar zxvf /home/software/uClinux-dist-20041215.tar.gz [root@samfei 44b0]# mv uClinux-dist micetek [root@samfei 44b0]# cd micetek [root@samfei micetek]# rm -rf linux-2.6.x [root@samfei micetek]# mv linux-2.6.9 linux-2.6.x [root@samfei micetek]# cd linux-2.6.x [root@samfei linux-2.6.x]# patch -p1 < ../../linux-2.6.9-uc0.patch [root@samfei linux-2.6.x]# patch -p1 < ../../linux-2.6.9-uc0-hsc0.patch
按照2.4內核的方法,增加vendor的文件. [root@samfei micetek]# cp linux-2.6.x/arch/armnommu/configs/s3c44b0x_defconfig vendors/Micetek/44b0//config.linux-2.6.x
然後make menuconfig配置後,編譯: [root@samfei micetek]# make dep; make make ARCH=armnommu CROSS_COMPILE=arm-elf- -C linux-2.6.x dep make[1]: Entering directory `/home/44b0/micetek/linux-2.6.x' *** Warning: make dep is unnecessary now. make[1]: Leaving directory `/home/44b0/micetek/linux-2.6.x' make ARCH=armnommu CROSS_COMPILE=arm-elf- -C linux-2.6.x || exit 1 make[1]: Entering directory `/home/44b0/micetek/linux-2.6.x' CHK include/linux/version.h UPD include/linux/version.h SYMLINK include/asm -> include/asm-armnommu SPLIT include/linux/autoconf.h -> include/config/* ……..
沒有內核映象文件 編譯完了,很正常,但沒有看到我希望的images下面的映象文件,只有一個romfs.img: [root@samfei micetek]# ls -l images ×ÜÓÃÁ¿ 152 -rw-r--r-- 1 root root 150528 10Ô 3 17:11 romfs.img
修改Makefile,增加bzImage 增加 LINUXTARGET = bzImage
[root@samfei micetek]# make make ARCH=armnommu CROSS_COMPILE=arm-elf- -C linux-2.6.x bzImage || exit 1 make[1]: Entering directory `/home/44b0/micetek/linux-2.6.x' ……
[root@samfei micetek]# ls -l images ×ÜÓÃÁ¿ 152 -rw-r--r-- 1 root root 150528 10Ô 3 17:20 romfs.img [root@samfei micetek]#
還是沒有希望的映象出現. 和2.4內核編譯的Makefile進行比較: [root@samfei micetek]# diff Makefile ../xm44b0/Makefile 43d42 < 237a237,240 > .PHONY: images > images: > $(MAKE) -C $(VENDDIR) images > 271c274,275 < subdirs: linux --- > #subdirs: linux > subdirs:
修改Makefile,增加linux,images 20 all: subdirs romfs modules modules_install image linux images
237 .PHONY: images 238 images: 239 $(MAKE) -C $(VENDDIR) images 240
273 .PHONY: subdirs 274 #subdirs: linux 275 subdirs:
[root@samfei micetek]# make for dir in include lib include user ; do [ ! -d $dir ] || make ARCH=armnommu CROSS_COMPILE=arm-elf- -C $dir || exit 1 ; done make[1]: Entering directory `/home/44b0/micetek/include' ……..
[root@samfei micetek]# ls images/ linux_bootram.bin linux_bootrom.bin romfs.img [root@samfei micetek]#
這下有了.
運行試試看
Welcome to MICETEK World! M(icetek)B(oot)L(oader) v1.0.2 (Jan 21 2003 - 15:09:41)
MBL code range: 0x0c700000 -> 0x0c717a98 DRAM Configuration: Bank #0: start 0x0c000000 8 MB FLASH Configuration: Bank: 2 MB Hit any key to stop autoboot: 0 EV44B0II ethernet driver v1.0 2003/01/08 by Qinwei, MICETEK Shanghai ARP broadcast 1 Server eth addr: 00:e0:4c:b1:22:0c TFTP from server 192.168.1.25; our IP address is 192.168.1.101 Filename 'linux_bootram.bin'. Load address: 0xc008000 Loading: T T T *********************************************************************************************************************************************************************************************************************************************************** done Bytes transferred = 1283292 (1394dc hex) ## Starting application at 0x0c008000 ...
沒有顯示啊!肯定是串口設置的問題了.配置的時候也沒有去修改時鐘頻率.我現在是用MBL(u-boot)來引導的,因此其他的CPU參數還可以不用管.
修正RAM和FLASH地址問題 修改了CONFIG_ARM_CLK,但依然還是一樣.經過仔細檢查,發現RAM和FLASH的地址沒有配置對.
配置正確後,運行: Welcome to MICETEK World! M(icetek)B(oot)L(oader) v1.0.2 (Jan 21 2003 - 15:09:41)
MBL code range: 0x0c700000 -> 0x0c717a98 DRAM Configuration: Bank #0: start 0x0c000000 8 MB FLASH Configuration: Bank: 2 MB Hit any key to stop autoboot: 0 EV44B0II ethernet driver v1.0 2003/01/08 by Qinwei, MICETEK Shanghai ARP broadcast 1 Server eth addr: 00:e0:4c:b1:22:0c TFTP from server 192.168.1.25; our IP address is 192.168.1.101 Filename 'linux_bootram.bin'. Load address: 0xc008000 Loading: ****************************************************************************************************************************************************************************************************************************************************************************** done Bytes transferred = 1381596 (1514dc hex) ## Starting application at 0x0c008000 ... Linux version 2.6.9-hsc0 ([email protected]) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(uClinux XIP and shared lib patches from http://www.snapgear.com/)) #5 Mon Oct 3 20:02:08 CST 2005 CPU: Samsung-S3C44B0x [44b07700] revision 0 (ARMv4T) Machine: S3C44B0X Development Board Built 1 zonelists Kernel command line: PID hash table entries: 64 (order: 6, 1024 bytes) Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 8MB = 8MB total Memory: 6664KB available (1239K code, 120K data, 52K init) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) NET: Registered protocol family 16 init_module Samsung S3C44B0 Rtl8019as driver version 0.1 (2002-02-20) init eth0: 12:34:56:78:90:ab get_stats RAMDISK driver initialized: 16 RAM disks of 2048K size 1024 blocksize loop: loaded (max 8 devices) NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 512 bind 512) NET: Registered protocol family 1 NET: Registered protocol family 17 VFS: Cannot open root device "" or unknown-block(0,255) Please append a correct "root=" boot option Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,255)
增加romfs 由於2.6內核中沒有了blkmem,因此具體的romfs文件不能按照2.4內核的做法,網上查到下面文章: 在S3C4510B上運行uClinux-2.6的過程（romfs直接鏈入image.ram） http://bbs.edw.com.cn/dispbbs.asp?boardID=20&ID=46160&page=1 我們參考其romfs的方法,具體做法: 修改linux-2.6.x/arch/armnommu/arch/kernel/vmlinux.lds.S, 添加romfs.o 81 *(.got) /* Global offset table */ 82 romfs_start = .; 83 romfs.o 84 romfs_end = .; 修改linux-2.6.x/arch/armnommu/kernel/setup.c,添加變量romfs_start,romfs_end及設置default_command_line 64 extern int _stext, _text, _etext, _edata, _end; 65 extern int romfs_start,romfs_end; 683 char *from = default_command_line; 685 sprintf(default_command_line, "root=/dev/ram0 initrd=0x%08lx,%ldk keepinitrd", (unsigned long)&romfs_start,((unsigned long)&romfs_end - (unsigned long)&romfs_start)>>10);
由於root文件系統使用/dev/ram0, 因此rc時就不能使用/dev/ram0, 而使用/dev/ram1, /dev/ram2, 因此同時修改vendors/Micetek/44b0/rc文件. 2 /bin/expand /etc/ramfs.img /dev/ram1
編譯,運行 Welcome to MICETEK World! M(icetek)B(oot)L(oader) v1.0.2 (Jan 21 2003 - 15:09:41)
MBL code range: 0x0c700000 -> 0x0c717a98 DRAM Configuration: Bank #0: start 0x0c000000 8 MB FLASH Configuration: Bank: 2 MB Hit any key to stop autoboot: 0 EV44B0II ethernet driver v1.0 2003/01/08 by Qinwei, MICETEK Shanghai ARP broadcast 1 Server eth addr: 00:e0:4c:b1:22:0c TFTP from server 192.168.1.25; our IP address is 192.168.1.101 Filename 'linux_bootram.bin'. Load address: 0xc008000 Loading: ************************************************************************************************************************************************************************************************************************************************************************************************************* done Bytes transferred = 1537244 (1774dc hex) ## Starting application at 0x0c008000 ... Linux version 2.6.9-hsc0 ([email protected]) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(uClinux XIP and shared lib patches from http://www.snapgear.com/)) #6 Mon Oct 3 20:51:33 CST 2005 CPU: Samsung-S3C44B0x [44b07700] revision 0 (ARMv4T) Machine: S3C44B0X Development Board Built 1 zonelists Kernel command line: root=/dev/ram0 initrd=0x0c14aef0,147k keepinitrd PID hash table entries: 64 (order: 6, 1024 bytes) Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 8MB = 8MB total Memory: 6512KB available (1386K code, 125K data, 52K init) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) checking if image is initramfs...it isn't (ungzip failed); looks like an initrd NET: Registered protocol family 16 init_module Samsung S3C44B0 Rtl8019as driver version 0.1 (2002-02-20) init eth0: 12:34:56:78:90:ab get_stats RAMDISK driver initialized: 16 RAM disks of 2048K size 1024 blocksize loop: loaded (max 8 devices) NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 512 bind 512) NET: Registered protocol family 1 NET: Registered protocol family 17 RAMDISK: romfs filesystem found at block 0 RAMDISK: Loading 147KiB [1 disk] into ram disk... done. VFS: Mounted root (romfs filesystem) readonly. Freeing init memory: 52K Warning: unable to open an initial console. Kernel panic - not syncing: Attempted to kill init!
檢查romfs/bin, 缺省配置的命令太少了. [root@samfei micetek]# ls -l romfs/bin ×ÜÓÃÁ¿ 140 -rwxr--r-- 1 root root 28196 10Ô 3 20:51 expand -rwxr--r-- 1 root root 29692 10Ô 3 20:51 init -rwxr--r-- 1 root root 76236 10Ô 3 20:51 sh [root@samfei micetek]#
增加了命令配置,重新編譯,但好像內核映象沒有改變.但命令確實編譯出來了 [root@samfei micetek]# ls -l romfs/bin ×ÜÓÃÁ¿ 2212 -rwxr--r-- 11 root root 166372 10Ô 3 21:31 busybox -rwxr--r-- 11 root root 166372 10Ô 3 21:31 df -rwxr--r-- 1 root root 29888 10Ô 3 21:31 erase -rwxr--r-- 1 root root 32900 10Ô 3 21:31 eraseall -rwxr--r-- 1 root root 28196 10Ô 3 21:31 expand -rwxr--r-- 11 root root 166372 10Ô 3 21:31 ifconfig -rwxr--r-- 1 root root 38888 10Ô 3 21:31 inetd -rwxr--r-- 1 root root 29692 10Ô 3 21:31 init -rwxr--r-- 11 root root 166372 10Ô 3 21:31 mount -rwxr--r-- 11 root root 166372 10Ô 3 21:31 netstat -rwxr--r-- 11 root root 166372 10Ô 3 21:31 ping -rwxr--r-- 11 root root 166372 10Ô 3 21:31 route -rwxr--r-- 1 root root 76236 10Ô 3 21:31 sh -rwxr--r-- 11 root root 166372 10Ô 3 21:31 tail -rwxr--r-- 11 root root 166372 10Ô 3 21:31 telnet -rwxr--r-- 1 root root 50288 10Ô 3 21:31 telnetd -rwxr--r-- 1 root root 54200 10Ô 3 21:31 tftp -rwxr--r-- 11 root root 166372 10Ô 3 21:31 umount -rwxr--r-- 11 root root 166372 10Ô 3 21:31 vi [root@samfei micetek]#
修改了命令配置後,編譯出來的內核還是老的romfs.o,這個應該是Makefile文件關聯的問題,romfs.o是後加的. 重新編譯後,panic情況依然如此!
增加串口驅動 增加文件drivers/serial/serial_s3c44b0.c和include/asm/arch/uart.h,修改drivers/serial/Kconfig, drivers/serial/Makefile及/include/linux/serial_core.h文件. In file included from drivers/serial/serial_s3c44b0.c:59: include/asm/arch/system.h: In function `arch_reset': include/asm/arch/system.h:19: warning: implicit declaration of function `mdelay' drivers/serial/serial_s3c44b0.c: In function `raw_printk': drivers/serial/serial_s3c44b0.c:133: warning: implicit declaration of function `raw_vprintk' drivers/serial/serial_s3c44b0.c: In function `raw_vprintk': drivers/serial/serial_s3c44b0.c:172: warning: control reaches end of non-void function drivers/serial/serial_s3c44b0.c: In function `__s3c44b0_rx_char': drivers/serial/serial_s3c44b0.c:220: warning: unused variable `status' drivers/serial/serial_s3c44b0.c: At top level: drivers/serial/serial_s3c44b0.c:546: `PORT_S3C44B0' undeclared here (not in a function) drivers/serial/serial_s3c44b0.c:546: initializer element is not constant drivers/serial/serial_s3c44b0.c:546: (near initialization for `__s3c44b0_ports[0].type') drivers/serial/serial_s3c44b0.c:547: initializer element is not constant drivers/serial/serial_s3c44b0.c:547: (near initialization for `__s3c44b0_ports[0]') drivers/serial/serial_s3c44b0.c:556: `PORT_S3C44B0' undeclared here (not in a function) drivers/serial/serial_s3c44b0.c:556: initializer element is not constant drivers/serial/serial_s3c44b0.c:556: (near initialization for `__s3c44b0_ports[1].type') drivers/serial/serial_s3c44b0.c:557: initializer element is not constant drivers/serial/serial_s3c44b0.c:557: (near initialization for `__s3c44b0_ports[1]') include/asm/arch/system.h:12: warning: `arch_idle' defined but not used make[3]: *** [drivers/serial/serial_s3c44b0.o] Error 1 make[2]: *** [drivers/serial] Error 2 make[1]: *** [drivers] Error 2 上面錯誤是沒有在serial_core.h中增加ＰＯＲＴ＿Ｓ３Ｃ４４Ｂ０定義造成的.
Welcome to MICETEK World! M(icetek)B(oot)L(oader) v1.0.2 (Jan 21 2003 - 15:09:41)
MBL code range: 0x0c700000 -> 0x0c717a98 DRAM Configuration: Bank #0: start 0x0c000000 8 MB FLASH Configuration: Bank: 2 MB Hit any key to stop autoboot: 0 EV44B0II ethernet driver v1.0 2003/01/08 by Qinwei, MICETEK Shanghai ARP broadcast 1 Server eth addr: 00:e0:4c:b1:22:0c TFTP from server 192.168.1.25; our IP address is 192.168.1.101 Filename 'linux_bootram.bin'. Load address: 0xc008000 Loading: ********************************************************************************************************************************************************************************************************************************************************************************************************************************************************** done Bytes transferred = 1770576 (1b0450 hex) ## Starting application at 0x0c008000 ... Linux version 2.6.9-hsc0 ([email protected]) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(uClinux XIP and shared lib patches from http://www.snapgear.com/)) #9 Mon Oct 3 22:26:53 CST 2005 CPU: Samsung-S3C44B0x [44b07700] revision 0 (ARMv4T) Machine: S3C44B0X Development Board Built 1 zonelists Kernel command line: root=/dev/ram0 initrd=0x0c12a66c,511k keepinitrd PID hash table entries: 64 (order: 6, 1024 bytes) drivers/serial/serial_s3c44b0.c:613 __s3c44b0_console_init Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 8MB = 8MB total Memory: 6300KB available (1616K code, 106K data, 56K init) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) checking if image is initramfs...it isn't (ungzip failed); looks like an initrd NET: Registered protocol family 16 init_module Samsung S3C44B0 Rtl8019as driver version 0.1 (2002-02-20) init eth0: 12:34:56:78:90:ab get_stats ttyS0 at I/O 0x1d00000 (irq = 3) is a Samsung S3C44B0X Internal UART ttyS1 at I/O 0x1d04000 (irq = 2) is a Samsung S3C44B0X Internal UART RAMDISK driver initialized: 16 RAM disks of 2048K size 1024 blocksize NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 512 bind 512) NET: Registered protocol family 1 NET: Registered protocol family 17 RAMDISK: romfs filesystem found at block 0 RAMDISK: Loading 511KiB [1 disk] into ram disk... done. VFS: Mounted root (romfs filesystem) readonly. Freeing init memory: 56K Warning: unable to open an initial console. Kernel panic - not syncing: Attempted to kill init!
增加了串口驅動,錯誤依然.應該跟串口驅動沒有關系了.
修改linux/init/main.c中: 732 #if 0 733 if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0) 734 printk("Warning: unable to open an initial console.\n"); 735 #else 736 if (sys_open((const char __user *) "/dev/ttyS0", O_RDWR, 0) < 0) 737 printk("Warning: unable to open an initial console.\n"); 738 #endif
編譯,運行後提示: Welcome to MICETEK World! M(icetek)B(oot)L(oader) v1.0.2 (Jan 21 2003 - 15:09:41)
MBL code range: 0x0c700000 -> 0x0c717a98 DRAM Configuration: Bank #0: start 0x0c000000 8 MB FLASH Configuration: Bank: 2 MB Hit any key to stop autoboot: 0 EV44B0II ethernet driver v1.0 2003/01/08 by Qinwei, MICETEK Shanghai ARP broadcast 1 Server eth addr: 00:e0:4c:b1:22:0c TFTP from server 192.168.1.25; our IP address is 192.168.1.101 Filename 'linux_bootram.bin'. Load address: 0xc008000 Loading: ********************************************************************************************************************************************************************************************************************************************************************************************************************************************************** done Bytes transferred = 1770576 (1b0450 hex) ## Starting application at 0x0c008000 ... Linux version 2.6.9-hsc0 ([email protected]) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(uClinux XIP and shared lib patches from http://www.snapgear.com/)) #10 Mon Oct 3 22:32:44 CST 2005 CPU: Samsung-S3C44B0x [44b07700] revision 0 (ARMv4T) Machine: S3C44B0X Development Board Built 1 zonelists Kernel command line: root=/dev/ram0 initrd=0x0c12a66c,511k keepinitrd PID hash table entries: 64 (order: 6, 1024 bytes) drivers/serial/serial_s3c44b0.c:613 __s3c44b0_console_init Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 8MB = 8MB total Memory: 6300KB available (1616K code, 106K data, 56K init) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) checking if image is initramfs...it isn't (ungzip failed); looks like an initrd NET: Registered protocol family 16 init_module Samsung S3C44B0 Rtl8019as driver version 0.1 (2002-02-20) init eth0: 12:34:56:78:90:ab get_stats ttyS0 at I/O 0x1d00000 (irq = 3) is a Samsung S3C44B0X Internal UART ttyS1 at I/O 0x1d04000 (irq = 2) is a Samsung S3C44B0X Internal UART RAMDISK driver initialized: 16 RAM disks of 2048K size 1024 blocksize NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 512 bind 512) NET: Registered protocol family 1 NET: Registered protocol family 17 RAMDISK: romfs filesystem found at block 0 RAMDISK: Loading 511KiB [1 disk] into ram disk... done. VFS: Mounted root (romfs filesystem) readonly. Freeing init memory: 56K divisor=32 沒有任何信息了.panic錯誤信息也沒有了,還是沒有打印出來?
Panic錯誤原因 經過一點一點調試,應該可以確定: 1. Kernel panic - not syncing: Attempted to kill init! 應該是/etc/inittab為空(也就是沒有一行有效的,全是#開頭!), 增加了inetd的定義後,沒有出現這個錯誤. 2. ttyS0串口設置後,後面printk就出不來,表示串口驅動還是有問題.下面的信息是去除串口驅動配置後的提示,/bin/sh啟動的時候,由於串口打不開,而一直在重新啟動.
Welcome to MICETEK World! M(icetek)B(oot)L(oader) v1.0.2 (Jan 21 2003 - 15:09:41)
MBL code range: 0x0c700000 -> 0x0c717a98 DRAM Configuration: Bank #0: start 0x0c000000 8 MB FLASH Configuration: Bank: 2 MB Hit any key to stop autoboot: 0 EV44B0II ethernet driver v1.0 2003/01/08 by Qinwei, MICETEK Shanghai ARP broadcast 1 Server eth addr: 00:e0:4c:b1:22:0c TFTP from server 192.168.1.25; our IP address is 192.168.1.101 Filename 'linux_bootram.bin'. Load address: 0xc008000 Loading: ******************************************************************************************************************************************************************************************************************************************************************************************************************************************************* done Bytes transferred = 1753456 (1ac170 hex) ## Starting application at 0x0c008000 ... Linux version 2.6.9-hsc0 ([email protected]) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(uClinux XIP and shared lib patches from http://www.snapgear.com/)) #19 Mon Oct 3 23:32:35 CST 2005 CPU: Samsung-S3C44B0x [44b07700] revision 0 (ARMv4T) Machine: S3C44B0X Development Board Built 1 zonelists Kernel command line: root=/dev/ram0 initrd=0x0c125ff8,511k keepinitrd PID hash table entries: 64 (order: 6, 1024 bytes) Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 8MB = 8MB total Memory: 6316KB available (1598K code, 106K data, 56K init) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) fs/namei.c:932 path_lookup name=/dev fs/namei.c:932 path_lookup name=/dev fs/namei.c:932 path_lookup name=/dev fs/namei.c:932 path_lookup name=/dev/console fs/namei.c:932 path_lookup name=/dev/console fs/namei.c:932 path_lookup name=/dev/console fs/namei.c:932 path_lookup name=/root fs/namei.c:932 path_lookup name=/root fs/namei.c:932 path_lookup name=/root checking if image is initramfs...it isn't (ungzip failed); looks like an initrd fs/open.c:952 sys_open filename=/initrd.image fs/open.c:764 filp_open filename=/initrd.image fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/initrd.image fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open NET: Registered protocol family 16 init_module Samsung S3C44B0 Rtl8019as driver version 0.1 (2002-02-20) init eth0: 12:34:56:78:90:ab get_stats RAMDISK driver initialized: 16 RAM disks of 2048K size 1024 blocksize NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 512 bind 512) NET: Registered protocol family 1 NET: Registered protocol family 17 fs/namei.c:932 path_lookup name=/init fs/namei.c:932 path_lookup name=/sys fs/namei.c:932 path_lookup name=/sys fs/open.c:952 sys_open filename=/sys/block/ram0/dev fs/open.c:764 filp_open filename=/sys/block/ram0/dev fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/sys/block/ram0/dev fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/namei.c:932 path_lookup name=/sys fs/namei.c:932 path_lookup name=/sys fs/namei.c:932 path_lookup name=/dev/ram fs/namei.c:932 path_lookup name=/dev/ram fs/open.c:952 sys_open filename=/dev/ram fs/open.c:764 filp_open filename=/dev/ram fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/ram fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/initrd.image fs/open.c:764 filp_open filename=/initrd.image fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/initrd.image fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open RAMDISK: romfs filesystem found at block 0 RAMDISK: Loading 511KiB [1 disk] into ram disk... done. fs/namei.c:932 path_lookup name=/dev/ram fs/namei.c:932 path_lookup name=/initrd.image fs/namei.c:932 path_lookup name=/dev/root fs/namei.c:932 path_lookup name=/dev/root fs/namei.c:932 path_lookup name=/root fs/namei.c:932 path_lookup name=/dev/root fs/namei.c:932 path_lookup name=/root fs/namei.c:932 path_lookup name=/dev/root fs/namei.c:932 path_lookup name=/root VFS: Mounted root (romfs filesystem) readonly. fs/namei.c:932 path_lookup name=/ fs/namei.c:932 path_lookup name=. fs/namei.c:932 path_lookup name=. Freeing init memory: 56K fs/open.c:952 sys_open filename=/dev/console fs/open.c:764 filp_open filename=/dev/console fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/console fs/namei.c:1429 open_namei error=0 fs/open.c:821 dentry_open Warning: unable to open an initial console. fs/namei.c:932 path_lookup name=/sbin/init fs/open.c:817 dentry_open fs/namei.c:932 path_lookup name=/etc/singleboot fs/open.c:952 sys_open filename=/dev/null fs/open.c:764 filp_open filename=/dev/null fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/null fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/namei.c:932 path_lookup name=/bin/sh fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/etc/rc fs/open.c:764 filp_open filename=/etc/rc fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/etc/rc fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/namei.c:932 path_lookup name=/bin/hostname fs/namei.c:932 path_lookup name=/usr/bin/hostname fs/namei.c:932 path_lookup name=/etc/hostname fs/namei.c:932 path_lookup name=/sbin/hostname fs/namei.c:932 path_lookup name=/usr/sbin/hostname fs/namei.c:932 path_lookup name=/bin/expand fs/namei.c:932 path_lookup name=/bin/expand fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/etc/ramfs.img fs/open.c:764 filp_open filename=/etc/ramfs.img fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/etc/ramfs.img fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/dev/ram1 fs/open.c:764 filp_open filename=/dev/ram1 fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/ram1 fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/namei.c:932 path_lookup name=/bin/mount fs/namei.c:932 path_lookup name=/bin/mount fs/open.c:817 dentry_open fs/namei.c:932 path_lookup name=proc fs/namei.c:932 path_lookup name=/proc fs/namei.c:932 path_lookup name=/bin/mount fs/namei.c:932 path_lookup name=/bin/mount fs/open.c:817 dentry_open fs/namei.c:932 path_lookup name=/dev/ram1 fs/namei.c:932 path_lookup name=/var fs/namei.c:932 path_lookup name=/dev/ram1 fs/namei.c:932 path_lookup name=/bin/mkdir fs/namei.c:932 path_lookup name=/usr/bin/mkdir fs/namei.c:932 path_lookup name=/etc/mkdir fs/namei.c:932 path_lookup name=/sbin/mkdir fs/namei.c:932 path_lookup name=/usr/sbin/mkdir fs/namei.c:932 path_lookup name=/var/config fs/namei.c:932 path_lookup name=/bin/mkdir fs/namei.c:932 path_lookup name=/usr/bin/mkdir fs/namei.c:932 path_lookup name=/etc/mkdir fs/namei.c:932 path_lookup name=/sbin/mkdir fs/namei.c:932 path_lookup name=/usr/sbin/mkdir fs/namei.c:932 path_lookup name=/var/tmp fs/namei.c:932 path_lookup name=/bin/mkdir fs/namei.c:932 path_lookup name=/usr/bin/mkdir fs/namei.c:932 path_lookup name=/etc/mkdir fs/namei.c:932 path_lookup name=/sbin/mkdir fs/namei.c:932 path_lookup name=/usr/sbin/mkdir fs/namei.c:932 path_lookup name=/var/log fs/namei.c:932 path_lookup name=/bin/mkdir fs/namei.c:932 path_lookup name=/usr/bin/mkdir fs/namei.c:932 path_lookup name=/etc/mkdir fs/namei.c:932 path_lookup name=/sbin/mkdir fs/namei.c:932 path_lookup name=/usr/sbin/mkdir fs/namei.c:932 path_lookup name=/var/run fs/namei.c:932 path_lookup name=/bin/mkdir fs/namei.c:932 path_lookup name=/usr/bin/mkdir fs/namei.c:932 path_lookup name=/etc/mkdir fs/namei.c:932 path_lookup name=/sbin/mkdir fs/namei.c:932 path_lookup name=/usr/sbin/mkdir fs/namei.c:932 path_lookup name=/var/lock fs/namei.c:932 path_lookup name=/bin/cat fs/namei.c:932 path_lookup name=/usr/bin/cat fs/namei.c:932 path_lookup name=/etc/cat fs/namei.c:932 path_lookup name=/sbin/cat fs/namei.c:932 path_lookup name=/usr/sbin/cat fs/open.c:952 sys_open filename=/etc/motd fs/open.c:764 filp_open filename=/etc/motd fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/etc/motd fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/namei.c:932 path_lookup name=/bin/ifconfig fs/namei.c:932 path_lookup name=/bin/ifconfig fs/open.c:817 dentry_open fs/namei.c:932 path_lookup name=/bin/route fs/namei.c:932 path_lookup name=/bin/route fs/open.c:817 dentry_open fs/namei.c:932 path_lookup name=/bin/dhcpcd fs/namei.c:932 path_lookup name=/usr/bin/dhcpcd fs/namei.c:932 path_lookup name=/etc/dhcpcd fs/namei.c:932 path_lookup name=/sbin/dhcpcd fs/namei.c:932 path_lookup name=/usr/sbin/dhcpcd fs/namei.c:932 path_lookup name=/bin/dhcpcd fs/namei.c:932 path_lookup name=/usr/bin/dhcpcd fs/namei.c:932 path_lookup name=/etc/dhcpcd fs/namei.c:932 path_lookup name=/sbin/dhcpcd fs/namei.c:932 path_lookup name=/usr/sbin/dhcpcd fs/open.c:952 sys_open filename=/etc/inittab fs/open.c:764 filp_open filename=/etc/inittab fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/etc/inittab fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/dev/inet fs/open.c:764 filp_open filename=/dev/inet fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/inet fs/namei.c:932 path_lookup name=/bin/inetd fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/dev/ttyS0 fs/open.c:764 filp_open filename=/dev/ttyS0 fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/ttyS0 fs/namei.c:1429 open_namei error=0 fs/open.c:821 dentry_open fs/namei.c:932 path_lookup name=/bin/sh fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/dev/null fs/open.c:764 filp_open filename=/dev/null fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/null fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/dev/null fs/open.c:764 filp_open filename=/dev/null fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/null fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/var/run/inetd.pid fs/open.c:764 filp_open filename=/var/run/inetd.pid fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/var/run/inetd.pid fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/etc/inetd.conf fs/open.c:764 filp_open filename=/etc/inetd.conf fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/etc/inetd.conf fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/etc/services fs/open.c:764 filp_open filename=/etc/services fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/etc/services fs/namei.c:1429 open_namei error=0 fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/etc/config/inetd.conf fs/open.c:764 filp_open filename=/etc/config/inetd.conf fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/etc/config/inetd.conf fs/open.c:952 sys_open filename=/dev/ttyS0 fs/open.c:764 filp_open filename=/dev/ttyS0 fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/ttyS0 fs/namei.c:1429 open_namei error=0 fs/open.c:821 dentry_open fs/namei.c:932 path_lookup name=/bin/sh fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/dev/ttyS0 fs/open.c:764 filp_open filename=/dev/ttyS0 fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/ttyS0 fs/namei.c:1429 open_namei error=0 fs/open.c:821 dentry_open fs/namei.c:932 path_lookup name=/bin/sh fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/dev/ttyS0 fs/open.c:764 filp_open filename=/dev/ttyS0 fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/ttyS0 fs/namei.c:1429 open_namei error=0 fs/open.c:821 dentry_open fs/namei.c:932 path_lookup name=/bin/sh fs/open.c:817 dentry_open fs/open.c:952 sys_open filename=/dev/ttyS0 fs/open.c:764 filp_open filename=/dev/ttyS0 fs/namei.c:1335 open_namei fs/namei.c:932 path_lookup name=/dev/ttyS0 fs/namei.c:1429 open_namei error=0 fs/open.c:821 dentry_open fs/namei.c:932 path_lookup name=/bin/sh fs/open.c:817 dentry_open
串口驅動波特率問題 串口驅動增加後,原來是: fs/namei.c:1429 open_namei error=0 divisor=32 divisor=32 drivers/serial/serial_s3c44b0.c:472 __s3c44b0_set_termios baud=9600 drivers/serial/serial_s3c44b0.c:474 __s3c44b0_set_termios quot=391à 波特率不對!
原來2.4內核配置的時候有缺省的console波特率的,但2.6檢查後沒有找到. 如果沒有設置過,那麼uart_get_baud_rate返回的波特率就是9600.
缺省的波特率是在調用console_setup的時候初始話的,但我們現在用的console是簡易的串口驅動的console,因此沒有調用過.也就是沒有設置過波特率.
這裡面要說明的就是: 2.6內核中帶了1個串口的驅動,只是只有console部分,還不是完整的串口驅動,但它對我們調試內核是非常有幫助的,因為串口能很早就輸出了,對於我調試後面的串口驅動是非常有好處的.如果你仔細看程序,我裡面增加了一個raw_printk函數,也是這樣的作用.
去除簡易串口驅動配置 具體顯示信息: Welcome to MICETEK World! M(icetek)B(oot)L(oader) v1.0.2 (Jan 21 2003 - 15:09:41)
MBL code range: 0x0c700000 -> 0x0c717a98 DRAM Configuration: Bank #0: start 0x0c000000 8 MB FLASH Configuration: Bank: 2 MB Hit any key to stop autoboot: 0 EV44B0II ethernet driver v1.0 2003/01/08 by Qinwei, MICETEK Shanghai ARP broadcast 1 Server eth addr: 00:e0:4c:b1:22:0c TFTP from server 192.168.1.25; our IP address is 192.168.1.101 Filename 'linux_bootram.bin'. Load address: 0xc008000 Loading: ********************************************************************************************************************************************************************************************************************************************************************************************************************************************************* done Bytes transferred = 1761776 (1ae1f0 hex) ## Starting application at 0x0c008000 ... drivers/serial/serial_core.c:1840 uart_set_options baud=115200 drivers/serial/serial_s3c44b0.c:473 __s3c44b0_set_termios baud=115200 drivers/serial/serial_s3c44b0.c:475 __s3c44b0_set_termios quot=33 Linux version 2.6.9-hsc0 ([email protected]) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(uClinux XIP and shared lib patches from http://www.snapgear.com/)) #28 Tue Oct 4 08:19:19 CST 2005 CPU: Samsung-S3C44B0x [44b07700] revision 0 (ARMv4T) Machine: S3C44B0X Development Board Built 1 zonelists Kernel command line: root=/dev/ram0 initrd=0x0c12994c,511k keepinitrd PID hash table entries: 64 (order: 6, 1024 bytes) drivers/serial/serial_s3c44b0.c:617 __s3c44b0_console_init drivers/serial/serial_s3c44b0.c:585 __s3c44b0_console_setup divisor=32 divisor=32 Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 8MB = 8MB total Memory: 6308KB available (1613K code, 101K data, 56K init) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) checking if image is initramfs...it isn't (ungzip failed); looks like an initrd NET: Registered protocol family 16 ttyS0 at I/O 0x1d00000 (irq = 3) is a Samsung S3C44B0X Internal UART ttyS1 at I/O 0x1d04000 (irq = 2) is a Samsung S3C44B0X Internal UART RAMDISK driver initialized: 16 RAM disks of 2048K size 1024 blocksize NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 512 bind 512) NET: Registered protocol family 1 NET: Registered protocol family 17 RAMDISK: romfs filesystem found at block 0 RAMDISK: Loading 511KiB [1 disk] into ram disk... done. VFS: Mounted root (romfs filesystem) readonly. Freeing init memory: 56K divisor=32 divisor=32 drivers/serial/serial_s3c44b0.c:473 __s3c44b0_set_termios baud=115200 drivers/serial/serial_s3c44b0.c:475 __s3c44b0_set_termios quot=33 Shell invoked to run file: /etc/rc Command: hostname EV44B0II Command: /bin/expand /etc/ramfs.img /dev/ram1 Command: mount -t proc proc /proc Command: mount -t ext2 /dev/ram1 /var Command: mkdir /var/config Command: mkdir /var/tmp Command: mkdir /var/log Command: mkdir /var/run Command: mkdir /var/lock Command: cat /etc/motd Welcome to ____ _ _ / __| ||_| _ _| | | | _ ____ _ _ _ _ | | | | | | || | _ \| | | |\ \/ / | |_| | |__| || | | | | |_| |/ \ | ___\____|_||_|_| |_|\____|\_/\_/ | | |_| for MICETEK EV44B0-II board Support by MICETEK Shanghai 2003.01 For further information check: http://www.uclinux.org/
Command: ifconfig lo 127.0.0.1 Command: route add -net 127.0.0.0 netmask 255.255.255.0 lo Command: dhcpcd -p -a eth0 & dhcpcd: Bad command or file name [16] Execution Finished, Exiting
Sash command shell (version 1.1.1) /> Sash command shell (version 1.1.1) />
前面調用過console_setup後,後面的波特率就對了.
2個sh 一個sh是配置了enable console shell,一個sh是inittab裡的ttyS0:unknow:/bin/sh. 只需要一個就可以. 串口正常後提示信息,第一階段完成 使用正常的串口驅動作為console.
Welcome to MICETEK World! M(icetek)B(oot)L(oader) v1.0.2 (Jan 21 2003 - 15:09:41)
MBL code range: 0x0c700000 -> 0x0c717a98 DRAM Configuration: Bank #0: start 0x0c000000 8 MB FLASH Configuration: Bank: 2 MB Hit any key to stop autoboot: 0 EV44B0II ethernet driver v1.0 2003/01/08 by Qinwei, MICETEK Shanghai ARP broadcast 1 Server eth addr: 00:e0:4c:b1:22:0c TFTP from server 192.168.1.25; our IP address is 192.168.1.101 Filename 'linux_bootram.bin'. Load address: 0xc008000 Loading: ********************************************************************************************************************************************************************************************************************************************************************************************************************************************************* done Bytes transferred = 1761776 (1ae1f0 hex) ## Starting application at 0x0c008000 ... drivers/serial/serial_core.c:1840 uart_set_options baud=115200 drivers/serial/serial_s3c44b0.c:473 __s3c44b0_set_termios baud=115200 drivers/serial/serial_s3c44b0.c:475 __s3c44b0_set_termios quot=33 Linux version 2.6.9-hsc0 ([email protected]) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(uClinux XIP and shared lib patches from http://www.snapgear.com/)) #31 Tue Oct 4 08:31:03 CST 2005 CPU: Samsung-S3C44B0x [44b07700] revision 0 (ARMv4T) Machine: S3C44B0X Development Board Built 1 zonelists Kernel command line: root=/dev/ram0 initrd=0x0c129950,511k keepinitrd PID hash table entries: 64 (order: 6, 1024 bytes) drivers/serial/serial_s3c44b0.c:617 __s3c44b0_console_init drivers/serial/serial_s3c44b0.c:585 __s3c44b0_console_setup divisor=32 divisor=32 Dentry cache hash table entries: 2048 (order: 1, 8192 bytes) Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) Memory: 8MB = 8MB total Memory: 6308KB available (1613K code, 101K data, 56K init) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) checking if image is initramfs...it isn't (ungzip failed); looks like an initrd NET: Registered protocol family 16 ttyS0 at I/O 0x1d00000 (irq = 3) is a Samsung S3C44B0X Internal UART ttyS1 at I/O 0x1d04000 (irq = 2) is a Samsung S3C44B0X Internal UART RAMDISK driver initialized: 16 RAM disks of 2048K size 1024 blocksize NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 512 bind 512) NET: Registered protocol family 1 NET: Registered protocol family 17 RAMDISK: romfs filesystem found at block 0 RAMDISK: Loading 511KiB [1 disk] into ram disk... done. VFS: Mounted root (romfs filesystem) readonly. Freeing init memory: 56K divisor=32 divisor=32 drivers/serial/serial_s3c44b0.c:473 __s3c44b0_set_termios baud=115200 drivers/serial/serial_s3c44b0.c:475 __s3c44b0_set_termios quot=33 Shell invoked to run file: /etc/rc Command: hostname EV44B0II Command: /bin/expand /etc/ramfs.img /dev/ram1 Command: mount -t proc proc /proc Command: mount -t ext2 /dev/ram1 /var Command: mkdir /var/config Command: mkdir /var/tmp Command: mkdir /var/log Command: mkdir /var/run Command: mkdir /var/lock Command: cat /etc/motd Welcome to ____ _ _ / __| ||_| _ _| | | | _ ____ _ _ _ _ | | | | | | || | _ \| | | |\ \/ / | |_| | |__| || | | | | |_| |/ \ | ___\____|_||_|_| |_|\____|\_/\_/ | | |_| for MICETEK EV44B0-II board Support by MICETEK Shanghai 2003.01 For further information check: http://www.uclinux.org/
Command: ifconfig lo 127.0.0.1 Command: route add -net 127.0.0.0 netmask 255.255.255.0 lo Command: dhcpcd -p -a eth0 & dhcpcd: Bad command or file name [16] Execution Finished, Exiting
Sash command shell (version 1.1.1) /> ps ax PID PORT STAT SIZE SHARED %CPU COMMAND 1 S 147K 0K 13.8 /sbin/init 2 R 0K 0K 0.0 ksoftirqd/0 3 S 0K 0K 0.1 events/0 4 S 0K 0K 0.0 khelper 5 S 0K 0K 0.0 kblockd/0 6 S 0K 0K 0.0 pdflush 7 S 0K 0K 0.0 pdflush 9 S 0K 0K 0.0 aio/0 8 S 0K 0K 0.0 kswapd0 17 S 67K 0K 1.4 /bin/inetd 18 S0 R 133K 0K 4.2 /bin/sh /> 最後說明 後面我繼續調試了網卡驅動和MTD驅動,但都沒有成功,而且碰到了比較大的困難.本來准備完成後再發表這個記錄.但目前無法完成,因此提前發表這個記錄.如果有誰成功完成網卡或MTD驅動的,希望能共享相關的信息. 我的附件patch中也包含了網卡和mtd的一些修改內容,各位也可以試試.
我聯系email: [email protected].,有什麼問題也可以email聯系我.
文章中說的2個補丁後的補丁.具體補丁用法:
#tar zxvf /home/software/uClinux-dist-20041215.tar.gz #mv uClinux-dist micetek #cd micetek #rm -rf linux-2.6.x #mv linux-2.6.9 linux-2.6.x # cd linux-2.6.x # patch -p1 < ../../linux-2.6.9-uc0.patch # patch -p1 < ../../linux-2.6.9-uc0-hsc0.patch #cd .. #patch -p1 < ../xm44b0-2.6-1215-20051005.patch
網卡使用的驅動是smc91113.c(從2.4內核移植過來,基本沒有改動什麼),前面檢測都正常了,就是接受數據包錯誤,具體的錯誤是: RCV: STATUS 1000 LENGTH 42 Reading 31 words and 0 byte(s) Receiving Packet Packet of length 62 0051 510f 0f00 004c 4c22 2208 0800 0008 0806 0600 0000 004c 4c22 22c0 c001 0100 0051 510f 0fc0 c001 0120 2020 2020 2020 2020 2020 2020 2020 2020 2020 2020 ---我們接受的數據包
000b 5100 0fff 00e0 4cb1 220c 0806 0001 0800 0604 0002 00e0 4cb1 220c c0a8 0119 000b 5100 0fff c0a8 0165 2020 2020 2020 2020 2020 2020 2020 2020 2020 2040 ------------正常的數據包(2.4內核)
我們的mac地址是 00 0b 51 00 0f ff, 錯誤接受的數據包看起來就是第2個字節變成了第3個字節, 第4個字節變成了第5個字節, ...
偶數字節都變成了下1個奇數字節的值.奇數字節是對的.
讀取網卡數據的時候采用的是16位.奇怪的就是同樣的程序在2.4內核下都正常.
摘自：linuxforum.net