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cat zImage >/dev/mtd1 does not work
- From: Weiguang Shi <wgshizz at yahoo dot com>
- To: ecos-discuss <ecos-discuss at ecos dot sourceware dot org>
- Date: Thu, 18 Jan 2007 23:40:35 -0800 (PST)
- Subject: [ECOS] cat zImage >/dev/mtd1 does not work
Hi,
I'm running snapgear-3.4.0 on an IXDP425 board with RedBoot as
the bootloader and I want to
be able to upgrade my kernel and filesystem, i.e., zImage and
ramdisk.gz on the flash, under Linux.
So I shipped the zImage and ramdisk.gz onto the running system
and did
# cat zImage >/dev/mtd1
# cat ramdisk.gz >/dev/mtd2
after eraseall the two partitions. To my surprise, when I reboot,
RedBoot gave
RedBoot> fis load ramdisk
** Warning - checksum failure. stored: 0x33dbe19b, computed:
0xc9d7dfef
RedBoot> fis load kernel
** Warning - checksum failure. stored: 0xfb99dd45, computed:
0x788bb713
RedBoot> exec -c "console=ttyS0,115200 root=/dev/ram0
initrd=0x00800000,6M mem=32M@0x00000000" 0x01600000
Can't execute Linux - invalid entry address
and refused to boot.
I understand here the newly flashed images (as it was not done in RedBoot but in the OS) may
not have the same checksum as RedBoot calculated for the earlier images. And this caused the
problem.
Any help is appreciated.
Weiguang
BTW, my MTD partition layout looks like
# cat /proc/mtd
dev: size erasesize name
mtd0: 00080000 00020000 "RedBoot"
mtd1: 00100000 00020000 "kernel"
mtd2: 00200000 00020000 "ramdisk"
mtd3: 00020000 00020000 "vendor_config"
mtd4: 0001f000 00020000 "FIS directory"
mtd5: 00001000 00020000 "RedBoot config"
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