qemu got errors when boot u-boot

[prife]

hi，all

I build the qemu,uboot from the git repo.  

then I do this:

qemu -M mini2440 -mtdblock u-boot  -serial stdio

while ,the qemu sometimes would get errors:

	2440_init: Boot mode: nand

	mini2440_init: .....

	S3C: CLK=240 HCLK=240 PCLK=240 UCLK=57

	QEMU: ee24c08_init

	DM9000: INIT QEMU MAC : 52:54:00:12:34:56

         

                 floating point exception

while sometimes, I could boot correctly to u-boot  prompt... does anyone meet this errors?

I got these web by google

http://git.qemu.org/?p=qemu.git&a=search&h=HEAD&st=commit&s=ARM+floating+point

http://copilotco.com/mail-archives/qemu.2008/msg06267.html

Is there any help?

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[prife]

well, I got an idea..

when use mtdblock,  qemu just think it is an NAND flash, which a page = data + spare(oob),  while uboot is just a binary....

I will try write a python script make u=boot.bin to u-boot_nand.bin

2012/7/11 prife <gop...@gmail.com>

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[prife]

:-( nothing changes....

1.create a nand flash, with all 0xff filled..

prife@smart:~/work$ ./creatNand.py

prife@smart:~/work$ ls -lh u-boot.nand  

-rw-rw-r-- 1 prife prife 132M  7月 11 03:33 u-boot.nand   (128M nand flash, 1page = 2048+64)

2.copy the u-boot.bin to nand flash .

prife@smart:~/work$ ./mkuboot.py

3. run qemu 

prife@smart:~/work$ qemu -M mini2440 -mtdblock u-boot.nand -serial stdio

mini2440_init: Boot mode: NAND

S3C: CLK=240 HCLK=240 PCLK=240 UCLK=57

QEMU: ee24c08_init

DM9000: INIT QEMU MAC : 52:54:00:12:34:56

QEMU mini2440_reset: loaded default u-boot from NAND

QEMU mini2440_reset: loaded override u-boot (size 3b400)

浮点数例外 (核心已转储),   while in Chinese it means " floating point exception(the core has been dumped")

retry, well,  this time it works..., 

prife@smart:~/work$ qemu -M mini2440 -mtdblock u-boot.nand -serial stdio

mini2440_init: Boot mode: NAND

S3C: CLK=240 HCLK=240 PCLK=240 UCLK=57

QEMU: ee24c08_init

DM9000: INIT QEMU MAC : 52:54:00:12:34:56

QEMU mini2440_reset: loaded default u-boot from NAND

QEMU mini2440_reset: loaded override u-boot (size 3b400)

S3C: CLK=240 HCLK=240 PCLK=240 UCLK=48

S3C: CLK=304 HCLK=304 PCLK=304 UCLK=48

S3C: CLK=304 HCLK=101 PCLK=50 UCLK=48

S3C: CLK=304 HCLK=76 PCLK=38 UCLK=48

S3C: CLK=304 HCLK=76 PCLK=38 UCLK=48

S3C: CLK=405 HCLK=101 PCLK=50 UCLK=48

U-Boot 1.3.2-mini2440 (Oct  6 2009 - 12:51:09)

I2C:   ready

DRAM:  64 MB

Flash:  2 MB

NAND:  Bad block table not found for chip 0

Bad block table not found for chip 0

128 MiB

*** Warning - bad CRC or NAND, using default environment

USB:   S3C2410 USB Deviced

In:    serial

Out:   serial

Err:   serial

MAC: 08:08:11:18:12:27

Hit any key to stop autoboot:  0 

MINI2440 # 

MINI2440 # 

MINI2440 # 

" floating point exception(the core has been dumped") 

this errors is often occurred, is there anyone who can fixed it??

2012/7/11 prife <gop...@gmail.com>

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[M P]

check the mini2440 directory, there is a start script already there

Michael

[prife]

2012/7/11 M P <buse...@gmail.com>

check the mini2440 directory, there is a start script already there

frankly speaking,  I want use mini2440-qemu  to run  NetBSD, looks  here: http://xpg.dk/projects/netbsd-support-for-the-mini2440/

That's why I did not use the mini2440/start .sh。

mini2440-qemu often  met  the errors,although some times it can boot to uboot correctly..

floating point exception

qemu -M mini2440 -mtdblock u-boot.nand -serial stdio....

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[yargil]

Hello,

 I've seen this bug. It is a division by 0 in sdl_send_mouse_event function.
The attached patch should fix the bug.

yargil.

[prife]

I tested more than 20 times, it works very well,  thanks  yargil very much！

but it seems you didn't push to git repo yet..

2012/7/11 yargil <yar...@free.fr>

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[yargil]

Le mercredi 11 juillet 2012 13:10:17 UTC+2, prife a écrit :

I tested more than 20 times, it works very well,  thanks  yargil very much！

but it seems you didn't push to git repo yet..

 
I sent the patch to Buserror few days ago.

[prife]

hi, yargil

another quetion:

I have noticed that, you added tcode to make mini2440-qemu can boot from NOR,

but I tested it now:

prife@smart:~/work$ MINI2440_BOOT='nor'

prife@smart:~/work$ export MINI2440_BOOT

           

prife@smart:~/work$ qemu -M mini2440 -pflash supervivi-64M -serial stdio

mini2440_init: Boot mode: NOR

mini2440_init: Register parallel flash 0 size 0x3e9a4 'pflash0'

S3C: CLK=240 HCLK=240 PCLK=240 UCLK=57

QEMU: ee24c08_init

DM9000: INIT QEMU MAC : 52:54:00:12:34:56

nand_init no/invalid block device, allocating 131072*528 in ram

S3C: CLK=240 HCLK=240 PCLK=240 UCLK=57

S3C: CLK=240 HCLK=240 PCLK=240 UCLK=57

qemu: fatal: Trying to execute code outside RAM or ROM at 0x00200000

R00=00000000 R01=00000000 R02=00000000 R03=00000000

R04=00000000 R05=00000000 R06=00000000 R07=00000000

R08=00000000 R09=00000000 R10=00000000 R11=00000000

R12=00000000 R13=00000000 R14=00000000 R15=00200000

PSR=400001d3 -Z-- A svc32

已放弃 (核心已转储)   In English, It means " Has been abandoned (core dump)"

prife@smart:~/work$ 

did I use wrong command to boot from NOR? 

2012/7/11 yargil <yar...@free.fr>

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[yargil]

2012/7/11 yargil

Le mercredi 11 juillet 2012 13:10:17 UTC+2, prife a écrit :

I tested more than 20 times, it works very well,  thanks  yargil very much！

but it seems you didn't push to git repo yet..

 
I sent the patch to Buserror few days ago.

Command line is correct.
I didn't test the boot from NOR flash with supervivi. But work fine with my own bootloader.
I will investigate.

[yargil]

I investigated.

The file for the pflash option must be an image of the NOR flash memory. Thus it must have a size of 2MB.
But you use the bootloader binary file of supervivi directly. It's wrong.
To construct a flash image file, you can use http://yargil.free.fr/flashimgflashimg. It's a tools design to construct and populate flash image file for qemu.

Bad news the super-vivi don't boot with qemu. It's strange. I tested the qemu patch with my own bootloader and with barebox and its was work fine.

[prife]

I cannot open your website... Cause there is a ugly GreatFireWall over the network of China...

I guess it is like this:

-----------------------------------------------------------------

#!/usr/bin/python

filename = "u-boot.nor"

data = 2048

spare = 0 

page = data + spare; 

pagenumPerMb = 1024 * 1024 / data

fileInMb = 2

buffer = '\xff' * page * pagenumPerMb

fh = open(filename, 'wb')

for i in range(0,fileInMb):

    fh.write(buffer);

fh.close();

---------------------------------------------------------------------------------

#!/usr/bin/python

uboot_bin = "u-boot.bin"

uboot_nor = "u-boot.nor"

data = 2048

spare = 0

page = data + spare

src = open(uboot_bin, 'rb')

target = open(uboot_nor, 'r+b')

offset = 0

while True:

    chunk = src.read(data)

    if not chunk:

        break

    target.seek(offset)

    target.write(chunk)

    offset = offset + page

src.close()

target.close()

---------------------------------------------------------------------

while then I did

#!/bin/bash

export MINI2440_BOOT="nor"

/home/prife/projects/git/mini2440-qemu/arm-softmmu/qemu-system-arm \

-M mini2440 -pflash u-boot.nor -serial stdio \

-net nic,vlan=0 -net tap,vlan=0,ifname=tap0

prife@smart:~/work$ ./runnor.sh 

sudo tunctl -u prife -t tap0

TUNSETIFF: Device or resource busy

sudo ifconfig tap0 0.0.0.0 promisc up

sudo brctl addif br0 tap0

brctl show

bridge name bridge id STP enabled interfaces

br0 8000.20cf3048bcb3 no eth0

tap0

mini2440_init: Boot mode: NOR

mini2440_init: Register parallel flash 0 size 0x200000 'pflash0'

S3C: CLK=240 HCLK=240 PCLK=240 UCLK=57

QEMU: ee24c08_init

DM9000: INIT QEMU MAC : 52:54:00:12:34:56

nand_init no/invalid block device, allocating 131072*528 in ram

S3C: CLK=240 HCLK=240 PCLK=240 UCLK=48

S3C: CLK=304 HCLK=304 PCLK=304 UCLK=48

S3C: CLK=304 HCLK=101 PCLK=50 UCLK=48

the qemu stoped here, couldnot go on anymore.... really very strange...

2012/7/12 yargil <yar...@free.fr>

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[prife]

sorry, I just made a foolish mistake.. I copy u-boot.bin to 2 M nor flash binary..

----------------------------------------------------------------------------------------

prife@smart:~/work$ cat ./createnor.py 

#!/usr/bin/python

filename = "nor"

data = 2048

spare = 0      

page = data + spare; 

pagenumPerMb = 1024 * 1024 / data

fileInMb = 2

buffer = '\xff' * page * pagenumPerMb

fh = open(filename, 'wb')

for i in range(0,fileInMb):

    fh.write(buffer);

fh.close();

----------------------------------------------------------------------------------------

prife@smart:~/work$ cat ./mknor.py 

#!/usr/bin/python

bin = "vivi.bin"

nor = "nor"

data = 2048

spare = 0

page = data + spare

src = open(bin, 'rb')

target = open(nor, 'r+b')

offset = 0

while True:

    chunk = src.read(data)

    if not chunk:

        break

    target.seek(offset)

    target.write(chunk)

    offset = offset + page

src.close()

target.close()

----------------------------------------------------------------------------------------

prife@smart:~/work$ cat runnor.sh 

#!/bin/bash

export MINI2440_BOOT="nor"

/home/prife/projects/git/mini2440-qemu/arm-softmmu/qemu-system-arm \

-M mini2440 -pflash nor -serial stdio \

-net nic,vlan=0 -net tap,vlan=0,ifname=tap0

# script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown

then:  

 $ ./runnor.py

----------------------------------------------------------------------------------------

mini2440_init: Boot mode: NOR

mini2440_init: Register parallel flash 0 size 0x200000 'pflash0'

S3C: CLK=240 HCLK=240 PCLK=240 UCLK=57

QEMU: ee24c08_init

DM9000: INIT QEMU MAC : 52:54:00:12:34:56

nand_init no/invalid block device, allocating 131072*528 in ram

S3C: CLK=240 HCLK=60 PCLK=30 UCLK=57

S3C: CLK=240 HCLK=60 PCLK=30 UCLK=48

S3C: CLK=405 HCLK=101 PCLK=50 UCLK=48

qemu: fatal: Trying to execute code outside RAM or ROM at 0x00000d38

R00=c000107c R01=eafffffe R02=00000000 R03=eafffffe

R04=00000030 R05=00000000 R06=00000000 R07=00000000

R08=00000000 R09=00000000 R10=00000000 R11=00000000

R12=00000000 R13=33fffff4 R14=000002ac R15=00000d38

PSR=600001d3 -ZC- A svc32

./runnor.sh: 行 5: 10459 已放弃        (核心已转储)

2012/7/12 prife <gop...@gmail.com>

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[yargil]

I have the same error with the super-vivi bootloader. But the same binary work fine to my mini2440. Weird :(
If you just search a bootloader to start netbsd from NOR flash, try barebox. I already booted it whith Qemu from NOR.

For flashimg, try to access directly to the gitorious webpage: https://gitorious.org/flashimg
To download source:
git clone git://gitorious.org/flashimg/flashimg.git
or
git clone https://git.gitorious.org/flashimg/flashimg.git

[prife]

sorry, I didn't see the email until now...

the first time,  because of my mistake , I copy uboot.bin to nor flash, and try to boot from nor,  qemu couldn't boot..

but, In mini2440 board,  u-boot can boot from NOR..

so there must be something wrong in mini2440-qemu when booting from NOR...

2012/7/12 yargil <yar...@free.fr>

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