[U-Boot-Users] boot uncompressed uImage

[U-Boot-Users] boot uncompressed uImage

[朱成]

hello,all

i builded compressed image using montavista's tools :

1.
/bin/sh /usr/src/linux-2.4.20_mvlcee31/scripts/mkuboot.sh -A arm -O
linux -T kernel \
-C none -a 0x10008000 -e 0x10008000 \
-n 'Linux-2.4.20_mvlcee31-omap730_gsm_gprs' \
-d /usr/src/linux-2.4.20_mvlcee31/arch/arm/boot/zImage uImage

2.
tftp 0x10000000 uImage
(i used u-boot-1.1.2, 0x10000000 is physical address)

3.
bootm
and kernel could boot successfully.

but i want to install uncompressed image, so i do:

1.
/bin/sh /usr/src/linux-2.4.20_mvlcee31/scripts/mkuboot.sh -A arm -O
linux -T kernel \
-C none -a 0x10008000 -e 0x10008000 \
-n 'Linux-2.4.20_mvlcee31-omap730_gsm_gprs' \
-d /usr/src/linux-2.4.20_mvlcee31/vmlinux uImage

2.
tftp 0x10000000 uImage

3.
bootm

but kernel booting failed, and u-boot rebooted!

shall i change 0x10008000 to sth. and do something else?

thanks!

[U-Boot-Users] boot uncompressed uImage

[Leif Lindholm]

On Wed, 2005-04-27 at 17:26 +0800, ?? wrote:
> but i want to install uncompressed image, so i do:
> 
> 1.
> /bin/sh /usr/src/linux-2.4.20_mvlcee31/scripts/mkuboot.sh -A arm -O
> linux -T kernel \
> -C none -a 0x10008000 -e 0x10008000 \
> -n 'Linux-2.4.20_mvlcee31-omap730_gsm_gprs' \
> -d /usr/src/linux-2.4.20_mvlcee31/vmlinux uImage

I'm gonna risk making a fool out of myself since I've never actually
worked with ARM, but...

vmlinux is (for all other platforms I've used) an ELF image, not a raw
binary. In order to be usable for u-boot, you need to run

<path-to-your-cross>objcopy -S -O binary vmlinux vmlinux.bin

and then use the resulting vmlinux.bin instead.

/
	Leif

[U-Boot-Users] boot uncompressed uImage

[朱成]

> I'm gonna risk making a fool out of myself since I've never actually
> worked with ARM, but...
> 
> vmlinux is (for all other platforms I've used) an ELF image, not a raw
> binary. In order to be usable for u-boot, you need to run
> 
> <path-to-your-cross>objcopy -S -O binary vmlinux vmlinux.bin
> 
> and then use the resulting vmlinux.bin instead.
> 


ok, i do it successfully! thanks!

[U-Boot-Users] boot uncompressed uImage

[Wolfgang Denk]

In message <1114593987.6981.25.camel@localhost> you wrote:
> 
> i builded compressed image using montavista's tools :

Well, actually you should ask MV support for help, then.

> /bin/sh /usr/src/linux-2.4.20_mvlcee31/scripts/mkuboot.sh -A arm -O
> linux -T kernel \
> -C none -a 0x10008000 -e 0x10008000 \
> -n 'Linux-2.4.20_mvlcee31-omap730_gsm_gprs' \
> -d /usr/src/linux-2.4.20_mvlcee31/arch/arm/boot/zImage uImage

Normally the build command should look something like this:

...
arm-linux-ld -p -X -T arch/arm/vmlinux.lds arch/arm/kernel/head-armv.o arch/arm/kernel/init_task.o init/main.o init/version.o init/do_mounts.o \
        --start-group \
        arch/arm/kernel/kernel.o arch/arm/mm/mm.o arch/arm/mach-s3c2400/s3c2400.o kernel/kernel.o mm/mm.o fs/fs.o ipc/ipc.o \
         drivers/serial/serial.o drivers/char/char.o drivers/block/block.o drivers/misc/misc.o drivers/net/net.o drivers/scsi/scsidrv.o drivers/mtd/mtdlink.o drivers/i2c/i2c.o drivers/usb/usbdrv.o drivers/media/media.o \
        net/network.o \
        arch/arm/nwfpe/math-emu.o arch/arm/lib/lib.a /work/TRAB/lib/lib.a \
        --end-group \
        -o vmlinux
...
arm-linux-objcopy -O binary -R .note -R .comment -S /work/TRAB/vmlinux piggy
gzip -9 < piggy > piggy.gz
...
mkimage -A arm -O linux -T kernel -C gzip -a 0x0c008000\
-e 0x0c008000 -n 'ARM Linux-2.4.27' \
-d compressed/piggy.gz uImage


I'm not sure if  your  "zImage"  is  equivalent  to  our  "piggy.gz",
Normally  this  is  NOT the case. What you have might work, but it is
not the "correct" way to build an ARM image.

> tftp 0x10000000 uImage

This is dangerous - The "bootm" command will copy your image from the
downlaod address (0x10000000)  tpo  the  load  address  (0x10008000).
Given  the  size of the kernel image this is an overlapping area. The
behaviour is undefined.

> but i want to install uncompressed image, so i do:
> 
> 1.
> /bin/sh /usr/src/linux-2.4.20_mvlcee31/scripts/mkuboot.sh -A arm -O
> linux -T kernel \
> -C none -a 0x10008000 -e 0x10008000 \
> -n 'Linux-2.4.20_mvlcee31-omap730_gsm_gprs' \
> -d /usr/src/linux-2.4.20_mvlcee31/vmlinux uImage

This is definitely wrong, as "vmlinux" is an ELF file, while you need
the raw binary image.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
While money can't buy happiness, it certainly lets  you  choose  your
own form of misery.