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To: "linux-mips" <>
Subject: Idt-mtd-question?
From: "zhengjie" <>
Date: Thu, 18 Mar 2004 21:27:42 +0800
Original-recipient: rfc822;
Hi all, 
   I am working in idt 79eb438 board(mips 4000 core), Os is linux(mips kernel), 
the board have a 4M flash, i want to use two partitions as fellow: 
const struct cstm_mips_ixx_info cstm_mips_ixx_board_desc[PHYSMAP_NUMBER] =  
       "MTD flash",     // name 
       0x11000000,      //CONFIG_MTD_CSTM_MIPS_IXX_START,      // 
       0x400000,        //CONFIG_MTD_CSTM_MIPS_IXX_LEN,        // window_size 
        2,              //CONFIG_MTD_CSTM_MIPS_IXX_BUSWIDTH,    // 
        2               // num_partitions 
static struct mtd_partition 
cstm_mips_ixx_partitions[PHYSMAP_NUMBER][MAX_PHYSMAP_PARTITIONS] = { 
                name: "main partition", 
                size:  0x200000,//CONFIG_MTD_CSTM_MIPS_IXX_LEN, 
                offset: 0, 
                name:   "cramfs partition" , 
                size:    0x200000 , 
                offset:  0x200000 , 
but the system have some erros!  
--------------------- start -------------------- 
Please Wait. Scanning Memory ...     63 MB free memory 
WARNING: en0: $ethaddr0 is not set, using default 08:00:06:05:70:ff 
WARNING: en1: $ethaddr1 is not set, using default 08:00:06:05:75:ff 
WARNING: Network interface en1 unusable until $netaddr1 is set 
IDT System Integration Manager Ver. 11.1 January 2003 
Copyright 1994-2002 Integrated Device Technology, Inc. 
RC32438 CPU, 32-bit, Little Endian, MIPS-II, Write-Through, no write allocate 
Console: 9600 baud 
Used for Ethernet Storage: 0xA3800000 - 0xA3FFFFFF 
Instruction Cache: 16 KB,   Data Cache: 16 KB 
Memory Configuration: SDRAM only. 
Primary User Memory: 0xA008C1A8 to 0xA37FFFFF. Size: 56783 KB 
CAUTION: "C" time functions such as clock() depend on the frequency of 
the crystal in socket Y3. Please compare against wall-clock to obtain 
 a scaling factor if needed! 
           For HELP enter '?' 
Press any key To Enter IDT/sim  1 
Serial console port initialized 
CPU revision is: 00018009 
Primary instruction cache 16kb, linesize 16 bytes (4 ways) 
Primary data cache 16kb, linesize 16 bytes (4 ways) 
Linux version 2.4.18-mips (root@zhengjie) (gcc version 2.95.4 20010319 
PCI: Initializing PCI 
Determined physical RAM map: 
 memory: 04000000 @ 00000000 (usable) 
On node 0 totalpages: 16384 
zone(0): 16384 pages. 
zone(1): 0 pages. 
zone(2): 0 pages. 
Kernel command line: root=/dev/mtdblock1 rootfstype=cramfs init=linuxrc 
Initializing IRQ's: 168 out of 256 
calculating r4koff... 000f4240(1000000) 
CPU frequency 200.00 MHz 
Calibrating delay loop... 199.88 BogoMIPS 
Memory: 60968k/65536k available (1128k kernel code, 4568k reserved, 156k data, 
Dentry-cache hash table entries: 8192 (order: 4, 65536 bytes) 
Inode-cache hash table entries: 4096 (order: 3, 32768 bytes) 
Mount-cache hash table entries: 1024 (order: 1, 8192 bytes) 
Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes) 
Page-cache hash table entries: 16384 (order: 4, 65536 bytes) 
Checking for 'wait' instruction...  unavailable. 
POSIX conformance testing by UNIFIX 
Autoconfig PCI channel 0x803579ac 
Scanning bus 00, I/O 0x18800000:0x18900000, Mem 0x50000000:0x60000000 
Linux NET4.0 for Linux 2.4 
Based upon Swansea University Computer Society NET3.039 
Initializing RT netlink socket 
Starting kswapd 
AttyS00 at 0xb8050000x (irq = 104) is a 16550AMANY_PORTS SHARE_IRQ 
block: 128 slots per queue, batch=32 
eth0: RC32438 ethernet0 found at 0x18058000 
eth0: HW Address 08:00:06:05:40:01 
eth0: Rx IRQ 42, Tx IRQ 43 
eth1: RC32438 ethernet1 found at 0x18060000 
eth1: HW Address 08:00:06:05:50:01 
eth1: Rx IRQ 44, Tx IRQ 45 
cstm_mips_ixx flash device: 400000 at 11000000 
 Amd/Fujitsu Extended Query Table v1.2 at 0x0040 
MTD flash: Swapping erase regions for broken CFI table. 
number of CFI chips: 1 
Creating 2 MTD partitions on "MTD flash": 
0x00000000-0x00200000 : "main partition" 
0x00200000-0x00400000 : "cramfs partition" 
NET4: Linux TCP/IP 1.0 for NET4.0 
IP Protocols: ICMP, UDP, TCP 
IP: routing cache hash table of 512 buckets, 4Kbytes 
TCP: Hash tables configured (established 4096 bind 4096) 
ip_conntrack (512 buckets, 4096 max) 
ip_tables: (C) 2000-2002 Netfilter core team 
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. 
NET4: Ethernet Bridge 008 for NET4.0 
cramfs: wrong magic 
Kernel panic: VFS: Unable to mount root fs on 1f:01 
-------------------- end ------------------------------ 
my .config and root setting is in appendage! 
Best regard&&Thanks. 

Attachment: .config
Description: Binary data

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