[ECOS] Can I change 'RedBoot Config' using MTD driver. ?

Gary Thomas gary@mlbassoc.com
Mon Sep 4 12:24:00 GMT 2006


Amitesh Singh wrote:
> Hi all
>  My Task is to set "Boot script" (RedBoot config) value via a linux
> command.
>
> As on RedBoot prompt,we set configurations using 'fconfig',is there any
> Linux tool which does the same ?
>
> i tried to do it in my way.
>
> # cat /proc/mtd
> dev:    size   erasesize  name
> mtd0: 00040000 00020000 "RedBoot"
> mtd1: 00f80000 00020000 "unallocated"
> mtd2: 00001000 00020000 "RedBoot config"
> mtd3: 00020000 00020000 "FIS directory"
>
>
> First i copied 'mtd2' using 'dd' and then changed the binary using 
> 'hexedit'
> (just changed Boot script).
> Before booting,I unlocked RedBoot partitions.
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++
> RedBoot> fis list
> Name              FLASH addr  Mem addr    Length      Entry point
> RedBoot           0x50000000  0x50000000  0x00040000  0x00000000
> RedBoot config    0x50FC0000  0x50FC0000  0x00001000  0x00000000
> FIS directory     0x50FE0000  0x50FE0000  0x00020000  0x00000000
> RedBoot> fis unlock RedBoot
> ... Unlock from 0x50000000-0x50040000: ..
> RedBoot> fis unlock "RedBoot config"
> ... Unlock from 0x50fc0000-0x50fc1000: .
> RedBoot> fis unlock "FIS directory"
> ... Unlock from 0x50fe0000-0x51000000: .
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
> I am able to read/write other partitions (including FIS directory 
> (have n't
> checked for RedBoot :P) ) except "RedBoot config".
> Any suggestions ???
>
> Best Regards
>
> Amitesh Singh
> http://www.amitesh.info
>
>
>
>
> RedBoot> fis init
> About to initialize [format] FLASH image system - continue (y/n)? y
> *** Initialize FLASH Image System
>    Warning: device contents not erased, some blocks may not be usable
> ... Unlock from 0x50fe0000-0x51000000: .
> ... Erase from 0x50fe0000-0x51000000: .
> ... Program from 0x01fdf000-0x01fff000 at 0x50fe0000: .
> ... Lock from 0x50fe0000-0x51000000: .
> RedBoot> fis list
> Name              FLASH addr  Mem addr    Length      Entry point
> RedBoot           0x50000000  0x50000000  0x00040000  0x00000000
> RedBoot config    0x50FC0000  0x50FC0000  0x00001000  0x00000000
> FIS directory     0x50FE0000  0x50FE0000  0x00020000  0x00000000
> RedBoot> fis unlock RedBoot
> ... Unlock from 0x50000000-0x50040000: ..
> RedBoot> fis unlock "RedBoot config"
> ... Unlock from 0x50fc0000-0x50fc1000: .
> RedBoot> fis unlock "FIS directory"
> ... Unlock from 0x50fe0000-0x51000000: .
> RedBoot> load -r -v -b 0x01600000 zImage
> Using default protocol (TFTP)
> -
> Raw file loaded 0x01600000-0x016ea9b7, assumed entry at 0x01600000
> RedBoot> load -r -v -b 0x00800000 ramdisk.gz
> Using default protocol (TFTP)
> -
> Raw file loaded 0x00800000-0x00b400ef, assumed entry at 0x00800000
> RedBoot> go -n 0x01600000
> Uncompressing
> Linux..................................................................... 
>
> done, booting the kernel.
> Linux version 2.6.12-uc0 (root@buildsys.***********.com) (gcc version 
> 3.3.2)
> #103 Fri Sep 1 20:02:51 IST 2006
> CPU: XScale-IXP4xx [690541f1] revision 1 (ARMv5TE)
> CPU0: D VIVT undefined 5 cache
> CPU0: I cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
> CPU0: D cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
> Machine: ADI Engineering Coyote
> converttags
> Warning: bad configuration page, trying to continue
> default tags
> Memory policy: ECC disabled, Data cache writeback
> Built 1 zonelists
> Kernel command line: console=ttyS0,115200 root=/dev/ram0
> initrd=0x00800000,8M  mem=64M@0x00000000 apic=off
> PID hash table entries: 512 (order: 9, 8192 bytes)
> Console: colour dummy device 80x30
> Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
> Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
> Memory: 64MB = 64MB total
> Memory: 54400KB available (1735K code, 375K data, 108K init)
> Mount-cache hash table entries: 512
> CPU: Testing write buffer coherency: ok
> checking if image is initramfs...it isn't (no cpio magic); looks like an
> initrd
> Freeing initrd memory: 8192K
> NET: Registered protocol family 16
> PCI: IXP4xx is host
> PCI: IXP4xx Using direct access for memory space
> PCI: bus0: Fast back to back transfers disabled
> dmabounce: registered device 0000:00:02.0 on pci bus
> NetWinder Floating Point Emulator V0.97 (double precision)
> Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
> ttyS0 at MMIO 0xc8001000 (irq = 13) is a XScale
> io scheduler noop registered
> io scheduler cfq registered
> RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
> loop: loaded (max 8 devices)
> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> ide: Assuming 33MHz system bus speed for PIO modes; override with 
> idebus=xx
> physmap flash device: 1000000 at 50000000
> phys_mapped_flash: Found 1 x16 devices at 0x0 in 16-bit bank
> Intel/Sharp Extended Query Table at 0x0031
> Using buffer write method
> cfi_cmdset_0001: Erase suspend on write enabled
> cmdlinepart partition parsing not available
> Searching for RedBoot partition table in phys_mapped_flash at offset
> 0xfe0000
> 4 RedBoot partitions found on MTD device phys_mapped_flash
> Creating 4 MTD partitions on "phys_mapped_flash":
> 0x00000000-0x00040000 : "RedBoot"
> 0x00040000-0x00fc0000 : "unallocated"
> 0x00fc0000-0x00fc1000 : "RedBoot config"
> mtd: partition "RedBoot config" doesn't end on an erase block -- force
> read-only
> 0x00fe0000-0x01000000 : "FIS directory"
> No recognised DiskOnChip devices found
> blkmtd: version $Revision: 1.24 $
> blkmtd: error: missing `device' name
>
> block2mtd: version $Revision: 1.23 $
> mice: PS/2 mouse device common for all mice
> NET: Registered protocol family 2
> IP: routing cache hash table of 512 buckets, 4Kbytes
> TCP established hash table entries: 4096 (order: 3, 32768 bytes)
> TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
> TCP: Hash tables configured (established 4096 bind 4096)
> NET: Registered protocol family 1
> NET: Registered protocol family 17
> RAMDISK: Compressed image found at block 0
> VFS: Mounted root (ext2 filesystem) readonly.
> Freeing init memory: 108K
> mount: /etc/mtab: Read-only file system
> ixp400: module license 'unspecified' taints kernel.
> ixp400_eth: Initializing IXP400 NPE Ethernet driver software v. 1.4A
> Warning : log_level == 2 and TRACE is disabled
> ixp400_eth: CPU clock speed (approx) = 266 MHz
> ixp400_eth: Initialising Queue Manager...
> [warning] Warning: the NPE A component you specified does not exist
> [error] ixEthMiiPhyScan : unexpected Mii PHY ID 0022561b
> [error] ixEthMiiPhyScan : unexpected Mii PHY ID 0022561b
> ixp400_eth: Found PHY 0 at address 2
> ixp400_eth: Found PHY 1 at address 4
> ixp400_eth: Configuring PHY 0
> ixp400_eth:     Speed 100       Duplex FULL     Autonegotiation ON
> ixp400_eth: Configuring PHY 1
> ixp400_eth:     Speed 100       Duplex FULL     Autonegotiation ON
> ixp400_eth: ixp0 is using NPEB and the PHY at address 2
> ixp400_eth: ixp1 is using NPEC and the PHY at address 4
> ixp400_eth: Use default MAC address 00:02:b3:01:01:01 for port 0
> ixp400_eth: Use default MAC address 00:02:b3:02:02:02 for port 1
> ixp400_eth: port_enable()
> port_enable(eth1)
> Welcome to
>
>    S N A P G E A R  L I N U X
>
> For further information check:
> http://www.snapgear.org/
>
> /etc/rc: groupadd: command not found
> /etc/rc: groupadd: command not found
> /etc/rc: groupadd: command not found
> /etc/rc: useradd: command not found
> init: Booting to single user mode
> # cat /proc/mtd
> dev:    size   erasesize  name
> mtd0: 00040000 00020000 "RedBoot"
> mtd1: 00f80000 00020000 "unallocated"
> mtd2: 00001000 00020000 "RedBoot config"
> mtd3: 00020000 00020000 "FIS directory"
> # ls -l /dev/mtd*
> crw-r--r--    1 0        0         90,   0 /dev/mtd0
> crw-r--r--    1 0        0         90,   2 /dev/mtd1
> crw-r--r--    1 0        0         90,   4 /dev/mtd2
> crw-r--r--    1 0        0         90,   6 /dev/mtd3
> brw-r--r--    1 0        0         31,   0 /dev/mtdblock0
> brw-r--r--    1 0        0         31,   1 /dev/mtdblock1
> brw-r--r--    1 0        0         31,   2 /dev/mtdblock2
> brw-r--r--    1 0        0         31,   3 /dev/mtdblock3
> crw-r--r--    1 0        0         90,   1 /dev/mtdr0
> crw-r--r--    1 0        0         90,   3 /dev/mtdr1
> crw-r--r--    1 0        0         90,   5 /dev/mtdr2
> crw-r--r--    1 0        0         90,   7 /dev/mtdr3
> # eraseall /dev/mtd2                       //Not able to write on 
> "RedBoot
> config" :P
> eraseall: /dev/mtd2: Permission denied
> # eraseall /dev/mtd3                      //can write on "FIS dir"
> Erased 128 Kibyte @ 0 -- 100% complete.
> # reboot
>
> The system is going down NOW !!
> Sending SIGTERM to all processes.
> Sending SIGKILL to all processes.
> #
> #
> # Restarting system.
>
> Testing 32MByte SDRAM...  OK +
> Panther Rev 1.2
> Redboot Release 1.1
> Ethernet eth0: MAC address 00:01:01:01:02:02
> IP: 2.2.2.2/255.255.255.0, Gateway: 2.2.2.2
> Default server: 2.2.2.1, DNS server IP: 2.2.2.2
>
> RedBoot(tm) bootstrap and debug environment [ROM]
> Red Hat certified release, version 1.92 - built 12:28:20, Jul 31 2006
>
> Platform: Intel Generic Residential Gateway (XScale)
> Copyright (C) 2000, 2001, 2002, Red Hat, Inc.
>
> RAM: 0x00000000-0x02000000, 0x0001c1d0-0x01fd1000 available
> FLASH: 0x50000000 - 0x51000000, 128 blocks of 0x00020000 bytes each.
> == Executing boot script in 2.000 seconds - enter ^C to abort
> ^C
> RedBoot> ^C
> RedBoot> ^C
> RedBoot> ^C
> RedBoot> fis list
> Name              FLASH addr  Mem addr    Length      Entry point
> RedBoot> fis init
> About to initialize [format] FLASH image system - continue (y/n)? y
> *** Initialize FLASH Image System
>    Warning: device contents not erased, some blocks may not be usable
> ... Unlock from 0x50fe0000-0x51000000: .
> ... Erase from 0x50fe0000-0x51000000: .
> ... Program from 0x01fdf000-0x01fff000 at 0x50fe0000: .
> ... Lock from 0x50fe0000-0x51000000: .
> RedBoot> fis list
> Name              FLASH addr  Mem addr    Length      Entry point
> RedBoot           0x50000000  0x50000000  0x00040000  0x00000000
> RedBoot config    0x50FC0000  0x50FC0000  0x00001000  0x00000000
> FIS directory     0x50FE0000  0x50FE0000  0x00020000  0x00000000
>
> ================================================================================ 
>
>

The easiest way to fix this is to separate the FIS directory from the 
FCONFIG database - basically
into two separate FLASH sectors.  Then Linux will let you write to them.

Rebuild RedBoot with CYGSEM_REDBOOT_FLASH_COMBINED_FIS_AND_CONFIG false


-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------


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