[U-Boot] Using u-boot with qemu-system-mips(qemu-2.1.2) caused infinite loop

[jiang]

Hello all:
I just downloaded the latest u-boot source code,then compiled with:
make qemu_mips_defconfig
make CROSS_COMPILE=mips-linux-uclibc-
then create image:
# dd of=flash bs=1k count=4k if=/dev/zero
# dd of=flash bs=1k conv=notrunc if=u-boot.bin

run with:
qemu-system-mips -M mips -pflash flash -nographic

but I got nothing then I try to debug with gdb,I got this:

0xbfc001fc <_start+508>: nop
0xbfc00200 <_start+512>: b 0xbfc00200 <_start+512>
0xbfc00204 <_start+516>: nop
0xbfc00208 <_start+520>: nop

Another thing, the file u-boot.bin I got was 215k, is that ok?

What should I do to use u-boot in qemu?:)

[Daniel Schwierzeck]

Hi,

Post by jiang
make qemu_mips_defconfig
make CROSS_COMPILE=mips-linux-uclibc-
# dd of=flash bs=1k count=4k if=/dev/zero
# dd of=flash bs=1k conv=notrunc if=u-boot.bin
qemu-system-mips -M mips -pflash flash -nographic
0xbfc001fc <_start+508>: nop
0xbfc00200 <_start+512>: b 0xbfc00200 <_start+512>
0xbfc00204 <_start+516>: nop
0xbfc00208 <_start+520>: nop

with recent Qemu versions there occurs a CPU exception in CFI probing

Post by jiang
Another thing, the file u-boot.bin I got was 215k, is that ok?
What should I do to use u-boot in qemu?:)

if you don't need 64bit support, you should use the malta board for Qemu

$ make malta_defconfig
$ make CROSS_COMPILE=mips-linux-uclibc-
$ qemu-system-mips -M malta -m 256 -nographic -bios u-boot.bin


U-Boot 2015.01-rc2-00163-g97cdf64 (Dec 05 2014 - 15:06:30)

Board: MIPS Malta CoreLV
DRAM: 256 MiB
Flash: 4 MiB
*** Warning - bad CRC, using default environment

In: serial
Out: serial
Err: serial
Net: pcnet#0
Warning: pcnet#0 using MAC address from net device

malta #

[jiang]

Dear Daniel:
Thanks for your guide,It's really helpful.Then last
question,which version of qemu do you use?:)

Post by Daniel Schwierzeck
Hi,

Post by jiang
make qemu_mips_defconfig
make CROSS_COMPILE=mips-linux-uclibc-
# dd of=flash bs=1k count=4k if=/dev/zero
# dd of=flash bs=1k conv=notrunc if=u-boot.bin
qemu-system-mips -M mips -pflash flash -nographic
0xbfc001fc <_start+508>: nop
0xbfc00200 <_start+512>: b 0xbfc00200 <_start+512>
0xbfc00204 <_start+516>: nop
0xbfc00208 <_start+520>: nop

with recent Qemu versions there occurs a CPU exception in CFI probing

Post by jiang
Another thing, the file u-boot.bin I got was 215k, is that ok?
What should I do to use u-boot in qemu?:)

if you don't need 64bit support, you should use the malta board for Qemu
$ make malta_defconfig
$ make CROSS_COMPILE=mips-linux-uclibc-
$ qemu-system-mips -M malta -m 256 -nographic -bios u-boot.bin
U-Boot 2015.01-rc2-00163-g97cdf64 (Dec 05 2014 - 15:06:30)
Board: MIPS Malta CoreLV
DRAM: 256 MiB
Flash: 4 MiB
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: pcnet#0
Warning: pcnet#0 using MAC address from net device
malta #