Show the register size when qemu prints "PCI".
Print the corresponding pci_{read,write}_config_{8,16,32}() which can be
used for board specific code in both serialice and coreboot's romstage.c
Signed-off-by: Idwer Vollering <vidwer(a)gmail.com>
Hello,
I am trying to dump my vendor bios through SerialICE. It seems to freeze
here (full log attached):
[f000:3a5c] -- IO: outl 0cf8 <= 8000f844
[f000:3a5c] -- IO: inb 0cfc => 00
PCI 0:1f.0 R.44
[f000:3a5c] -- IO: outb 0cfc <= 10
PCI 0:1f.0 R.44
[f000:3a5c] -- IO: inw 1004 => 0000
[f000:0013] -- IO: outw 0080 <= fea0
[f000:0024] -- IO: outl 0cf8 <= 800000fc
[f000:0024] -- IO: outw 0cfc <= 0109
PCI 0:00.0 R.fc
[f000:0024] -- IO: outb 0080 <= 01
[f000:0078] -- IO: outb 0080 <= 02
[f000:009a] -- IO: outw 0080 <= eee3 <------FREEZE
So, through gdb debugging I think I traced it back to the source.
0xf3af0: mov $0x8000f844,%eax
0xf3af6: mov $0xcf8,%dx
0xf3af9: out %eax,(%dx)
0xf3afb: mov $0xcfc,%dx
0xf3afe: in (%dx),%al
0xf3aff: or $0x10,%al
0xf3b01: out %al,(%dx)
0xf3b02: mov %es:(%edi),%dx
0xf3b06: add $0x4,%dx
0xf3b09: in (%dx),%ax
0xf3b0a: shr $0xa,%ax
0xf3b0d: and $0x7,%ax
0xf3b10: cmp $0x5,%ax
0xf3b13: jne 0xf3b1b
0xf3b15: mov $0x80000000,%ebp
0xf3b1b: jmp 0xf0013
0xf0013: mov $0xfea0,%ax
0xf0016: out %ax,$0x80
0xf0018: mov %cr4,%eax
0xf001b: or $0x200,%eax
0xf0021: mov %eax,%cr4
0xf0024: mov $0x109,%ax
0xf0027: mov %ax,%bx
0xf0029: mov $0xfc,%al
0xf002b: and $0xff,%eax
0xf0031: or $0x80000000,%eax
0xf0037: mov %ax,%dx
0xf0039: bswap %edx
0xf003c: mov $0xcf8,%dx
0xf003f: and $0xfffffffc,%eax
0xf0043: out %eax,(%dx)
0xf0045: bswap %edx
0xf0048: mov %dx,%ax
0xf004a: bswap %edx
0xf004d: and $0x2,%ax
0xf0050: add %ax,%dx
0xf0052: add $0x4,%dx
0xf0055: mov %bx,%ax
0xf0057: out %ax,(%dx)
0xf0058: xor %ecx,%ecx
0xf005b: or $0x3,%ebp
0xf005f: mov $0x1,%al
0xf0061: out %al,$0x80
0xf0063: bswap %esp
0xf0066: mov $0x6c,%sp
0xf0069: jmp 0xf17b9
0xf006c: bswap %esp
0xf006f: jae 0xf0078
0xf0071: mov $0xeee1,%ax
0xf0074: out %ax,$0x80
0xf0076: jmp 0xf0076
0xf0078: mov $0x2,%al
0xf007a: out %al,$0x80
0xf007c: bswap %esp
0xf007f: mov $0x85,%sp
0xf0082: jmp 0xf17dc
0xf0085: bswap %esp
0xf0088: jae 0xf0091
0xf008a: mov $0xeee2,%ax
0xf008d: out %ax,$0x80
0xf008f: jmp 0xf008f
0xf0091: test $0x3,%ebp
0xf0098: jne 0xf00a1
0xf009a: mov $0xeee3,%ax
0xf009d: out %ax,$0x80
0xf009f: jmp 0xf009f
0xf00a1: mov $0x3,%al
0xf00a3: out %al,$0x80
----bla, bla, bla
So I think it all points back to the PMBASE + 4 (0x1004) register.
0xf3b0a: shr $0xa,%ax
0xf3b0d: and $0x7,%ax
0xf3b10: cmp $0x5,%ax
I tried to set PMBASE + 4 (0x1004) to 0x0005 in my serialice mainboard
config but when the bios re-enables PMBASE it seems to get wiped out
(reset to 0).
#define PMBASE 0x1000
/* Set ACPI base address (I/O space). */
pci_write_config32(PCI_ADDR(0, 0x1f, 0, 0x40), (PMBASE | 1));
outw(0x0005, PMBASE + 4);
At this point I am not sure what to do or if I am looking at this
correctly, I am not so good at assembly.....Help? Ideas?
--
Thanks,
Joseph Smith
Set-Top-Linux
www.settoplinux.org
