Re: [Qemu-devel] PreP kernels boot using Qemu

[Aurelien Jarno <aurelien@aurel32.net>]

Rob Landley a écrit :
> On Monday 22 October 2007 11:28:10 am Aurelien Jarno wrote:
>> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
>>
>> diff --git a/arch/ppc/syslib/i8259.c b/arch/ppc/syslib/i8259.c
>> index 1e5a00a..559f27c 100644
>> --- a/arch/ppc/syslib/i8259.c
>> +++ b/arch/ppc/syslib/i8259.c
>> @@ -127,6 +127,7 @@ static void i8259_unmask_irq(unsigned int irq_nr)
>>  static struct irq_chip i8259_pic = {
>>  	.typename	= " i8259    ",
>>  	.mask		= i8259_mask_irq,
>> +	.disable	= i8259_mask_irq,
>>  	.unmask		= i8259_unmask_irq,
>>  	.mask_ack	= i8259_mask_and_ack_irq,
>>  };
> 
> Using mdm's qemu target platform and the 4k bios that supplies a device tree, 
> I applied this but it didn't make any difference in the ne2k-pci adapter (not 
> that I noticed).  It still doesn't bind to anything during bootup.  (There's 
> no eth0.)

You need this patch to get the *ISA* NE2000 card working, the PCI one
still doesn't work.

> I also tried enabling the 8139too driver and telling qemu "-net 
> nic,model=rtl8139 -net user" (which made arm work), and it goes:
> 
>> PCI: Probing PCI hardware
>> Memory resource not set for host bridge 0
>> PCI: Cannot allocate resource region 2 of PCI bridge 0
>> PCI: can't move host bridge resource
>> PCI: Cannot allocate resource region 0 of device 0000:00:0d.0
>> PCI: Cannot allocate resource region 1 of device 0000:00:0d.0
> ...
>> 8139too Fast Ethernet driver 0.9.28
>> 8139too 0000:00:0d.0: This (id 10ec:8139 rev 20) is an enhanced 8139C+ chip
>> 8139too 0000:00:0d.0: Use the "8139cp" driver for improved performance and
>> stability. 
> 
> And then there's an eth0, but it doesn't work.  I can assign an address to it 
> but no matter what I try, no packets are sent and received (the packet 
> transmit/receive/error counts never even go up, they stay at zero).
> 

The PCI emulation is broken for this target, it has to be fixed first.

-- 
  .''`.  Aurelien Jarno	            | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
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