Re: [ts-7000] 2.6 derevo18 patch -- success!

[Andrew Gaylard <>]

Matthieu Crapet wrote:

    6 RedBoot partitions found on MTD device
    phys_mapped_flash                     
    Creating 6 MTD partitions on
    "phys_mapped_flash":                              
    0x00000000-0x00e20000 :
    "(reserved)"                                           
    mtd: Giving out device 0 to
    (reserved)                                         
    0x00e20000-0x00e60000 :
    "RedBoot"                                              
    mtd: Giving out device 1 to
    RedBoot                                            
    0x00e60000-0x00fa0000 :
    "zImage"                                               
    mtd: Giving out device 2 to
    zImage                                             
    0x00fa0000-0x00fc0000 :
    "unallocated"                                          
    mtd: Giving out device 3 to
    unallocated                                        
    0x00fc0000-0x00fc1000 : "RedBoot
    config"                                       
    mtd: Giving out device 4 to RedBoot
    config                                     
    0x00fe0000-0x01000000 : "FIS
    directory"                                        
    mtd: Giving out device 5 to FIS
    directory                                      

    -bash-3.1# mount -t jffs2 -o ro /dev/mtdblock/0
    /mnt                           
    jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at
    0x00000000: 0x5243 in
    stead                                                                          


    

No ! You are trying to mount the "(reserved)" partition, which is in 
fact TS-BOOTROM + the jffs2 image.
You can give a try to the command line partition table parsing 
(CONFIG_MTD_CMDLINE_PATRS).

For exemple: mtdparts=phys_mapped_flash:@0x00020000(FS)

You can also make your own map driver and don't use anymore the physmap 
driver.
You'll have to comment the physmap_configure line in 
arch/arm/mach-ep93xx/ts72xx.c.
I can send it to you if you are interested.

# cat /proc/mtd 
dev:    size   erasesize  name
mtd0: 00800000 00020000 "Full TS-7200 NOR flash"
mtd1: 00020000 00020000 "TS-BOOTROM"
mtd2: 00600000 00020000 "RootFS"
mtd3: 001e0000 00020000 "Redboot"
  

Thanks Matthieu!

Actually, an hour after I sent my previous mail, I came to the same
conclusion.  The other problem was convincing the kernel to mount
root as JFFS2, which I also managed.

My kernel command line now looks like this (sorry if the mailers wrap):

exec -c "console=ttyAM0,115200 root=/dev/mtdblock1 \ mtdparts=phys_mapped_flash:128k(TS-BOOTROM)ro,14336k(Linux),-(RedBoot) \ rootfstype=jffs2"

This is for a TS7200 with 16MB flash; I got the numbers from
booting with a 2.4.26-ts9 kernel, as follows:

Creating 3 MTD partitions on "TS-7200 flash":
0x00000000-0x00020000 : "TS-BOOTROM"
0x00020000-0x00e20000 : "Linux"
0x00e20000-0x01000000 : "RedBoot"

Now the only problem I have is a minor one:  mounting root takes
about 10 seconds, and produces these warnings:

ep93xx-rtc ep93xx-rtc: rtc intf: sysfs                                         
ep93xx-rtc ep93xx-rtc: rtc intf: dev (254:1)                                   
ep93xx-rtc ep93xx-rtc: rtc core: registered ep93xx as rtc1                     
i2c /dev entries driver                                                        
TCP bic registered                                                             
NET: Registered protocol family 1                                              
NET: Registered protocol family 17                                             
NET: Registered protocol family 15                                             
rtc-m48t86 rtc-m48t86: hctosys: invalid date/time                              
Unknown but compatible feature node (0x2005) found at offset 0x00000000        
Unknown but compatible feature node (0x2005) found at offset 0x00020000        
Unknown but compatible feature node (0x2005) found at offset 0x00040000        
...[long list snipped]...
Unknown but compatible feature node (0x2005) found at offset 0x006a0000        
Unknown but compatible feature node (0x2005) found at offset 0x006c0000        
VFS: Mounted root (jffs2 filesystem).                                          

I make my filesystem from an untarred TS filesystem like this:

cd flash-fs-root
mkfs.jffs2 -p6291456 -e131072 -o ../flash-fs-image

Anyone have any ideas?

Andrew
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