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[请教]NOR FLASH上的MTD分区如何创建？ |
| 作者：mfrc531 栏目：ARM技术 |
kernel: 2.6.16 1，我已在/DEVICEs/mtd/maps/下建立了my-flash.c，内容参照他人的 2，在Makefile中加入了OBJ-$(.....)my-flash.o kernel对MTD模块的支持是没有问题的 期望的输出是： Creating 3 MTD partitions on "A": 0x00000000-0x00040000 : "ARMBoot" 0x00040000-0x00220000 : "Kernel" 0x00220000-0x00400000 : "rootfs" 请问要完成MTD分区，还需要做哪些修改呢？ PS：加载rootfs是否一定要对MTD分区，即使分一个区？ 附录：config关于MTD部分 # # MEMORY TECHNOLOGY DEVICEs (MTD) # CONFIG_MTD=y # CONFIG_MTD_DEBUG is not set CONFIG_MTD_CONCAT=y CONFIG_MTD_PARTITIONS=y # CONFIG_MTD_REDBOOT_PARTS is not set CONFIG_MTD_CMDLINE_PARTS=y # CONFIG_MTD_AFS_PARTS is not set # # User MODULES And Translation Layers # CONFIG_MTD_CHAR=y CONFIG_MTD_BLOCK=y # CONFIG_FTL is not set # CONFIG_NFTL is not set # CONFIG_INFTL is not set # CONFIG_RFD_FTL is not set # # RAM/ROM/Flash chip drivers # CONFIG_MTD_CFI=y CONFIG_MTD_JEDECPROBE=y CONFIG_MTD_GEN_PROBE=y # CONFIG_MTD_CFI_ADV_OPTIONS is not set CONFIG_MTD_MAP_BANK_WIDTH_1=y CONFIG_MTD_MAP_BANK_WIDTH_2=y CONFIG_MTD_MAP_BANK_WIDTH_4=y # CONFIG_MTD_MAP_BANK_WIDTH_8 is not set # CONFIG_MTD_MAP_BANK_WIDTH_16 is not set # CONFIG_MTD_MAP_BANK_WIDTH_32 is not set CONFIG_MTD_CFI_I1=y CONFIG_MTD_CFI_I2=y # CONFIG_MTD_CFI_I4 is not set # CONFIG_MTD_CFI_I8 is not set CONFIG_MTD_CFI_INTELEXT=y # CONFIG_MTD_CFI_AMDSTD is not set # CONFIG_MTD_CFI_STAA is not set CONFIG_MTD_CFI_UTIL=y CONFIG_MTD_RAM=y CONFIG_MTD_ROM=m # CONFIG_MTD_ABSENT is not set # CONFIG_MTD_OBSOLETE_CHIPS is not set # # Mapping drivers for chip access # # CONFIG_MTD_COMPLEX_MAPPINGS is not set CONFIG_MTD_PHYSMAP=m CONFIG_MTD_PHYSMAP_START=0x10000000 CONFIG_MTD_PHYSMAP_LEN=0x1000000 CONFIG_MTD_PHYSMAP_BANKWIDTH=2 # CONFIG_MTD_ARM_INTEGRATOR is not set CONFIG_MTD_IMPA7=y CONFIG_MTD_PLATRAM=y # # Self-contained MTD DEVICE drivers # # CONFIG_MTD_DATAFLASH is not set # CONFIG_MTD_M25P80 is not set # CONFIG_MTD_SLRAM is not set # CONFIG_MTD_PHRAM is not set # CONFIG_MTD_MTDRAM is not set CONFIG_MTD_BLKMTD=y CONFIG_MTD_BLOCK2MTD=y # # Disk-On-Chip DEVICE Drivers # # CONFIG_MTD_DOC2000 is not set # CONFIG_MTD_DOC2001 is not set # CONFIG_MTD_DOC2001PLUS is not set 附：启动信息 Starting kernel ... Uncompressing Linux........................................................... ............. done, booting the kernel. Linux version 2.6.16 (ssh@hust) (gcc version 4.0.0 (DENX ELDK 4.0 4.0.0)) #7 T hu Nov 9 18:04:04 CST 2006 CPU: ARM920Tid(wb) [41129200] revision 0 (ARMv4T) Machine: ATMEL AT91RM9200-DK MEMORY policy: ECC disabled, Data cache writeback Clocks: CPU 179 MHz, MASTER 59 MHz, main 18.432 MHz CPU0: D VIVT write-back cache CPU0: I cache: 16384 bytes, associativity 64, 32 byte LINEs, 8 sets CPU0: D cache: 16384 bytes, associativity 64, 32 byte LINEs, 8 sets Built 1 zonelists Kernel command LINE: mem=32M console=ttyS0,115200 noinitrd root=/dev/mtdblock2 init=/linuxrc AT91: 128 gpio irqs in 4 banks PID hash table entries: 256 (order: 8, 4096 bytes) Console: colour DUMMY DEVICE 80x30 Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) MEMORY: 32MB = 32MB total MEMORY: 30088KB available (1824K code, 383K data, 92K init) Mount-cache hash table entries: 512 CPU: Testing write buffer coherency: ok NET: Registered protocol family 16 usbcore: registered new driver usbfs usbcore: registered new driver hub NetWinder Floating Point EMULATOR V0.97 (double PRECISION) JFFS2 version 2.2. (NAND) (C) 2001-2003 Red Hat, Inc. JFFS2: default compression mode: priority Initializing Cryptographic API io scheduler noop registered (default) io scheduler anticipatory registered ttyS0 at MMIO 0xfefff200 (irq = 1) is a AT91_SERIAL ttyS1 at MMIO 0xfefc4000 (irq = 7) is a AT91_SERIAL RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize loop: loaded (max 8 DEVICEs) DM9000 Ethernet Driver impA7:probing 0x00800000 at 0x00000000 impA7:probing 0x00800000 at 0x10000000 Generic platform RAM MTD, (c) 2004 Simtec ELECTRONICS blkmtd: version $Revision: 1.27 $ blkmtd: error: missing `DEVICE' NAME block2mtd: version $Revision: 1.30 $ NET: Registered protocol family 2 IP route cache hash table entries: 512 (order: -1, 2048 bytes) TCP established hash table entries: 2048 (order: 1, 8192 bytes) TCP bind hash table entries: 2048 (order: 1, 8192 bytes) TCP: Hash tables configured (established 2048 bind 2048) TCP RENO registered TCP bic registered NET: Registered protocol family 1 NET: Registered protocol family 17 Root-NFS: No NFS server available, giving up. VFS: Unable to mount root fs via NFS, trying floppy. VFS: Cannot open root DEVICE "mtdblock2" or unknown-block(2,0) Please append a correct "root=" boot option Kernel panic - not syncing: VFS: |
| 2楼： | >>参与讨论 |
| 作者： wangkj 于 2006/11/12 15:27:00 发布：
你找错地方了，到linux论坛吧 这是硬件讨论，软件到www.linuxforum.net，这个是老问题。 |
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