Re: [flashrom] flashrom: Can't mmap memory

[Pádraig Brady]

On 30/09/10 07:47, Pádraig Brady wrote:
> On 30/09/10 00:50, Carl-Daniel Hailfinger wrote:
> > Mh. Could you please compare the following for both kernels?
> > /proc/iomem
> > The first 100 lines of dmesg
> > I believe there should be a clue somewhere.

Attached is dmesg and iomem from the working kernel
(I just booted a Fedora 14 live key on the same system
 and flashrom works fine).

Nothing obvious from the iomem diff:
(02:00.0 is the ethernet controller BTW)

$ diff broken.iomem working.iomem
11,13c11,13
<   00400000-0079856f : Kernel code
<   00798570-009d970f : Kernel data
<   00a6a000-00b318d7 : Kernel bss
---
> 00400000-007d8801 : Kernel code
>   007d8802-00a6213f : Kernel data
>   00c31000-0130a14b : Kernel bss

19c19
< e0000000-efffffff : PCI MMCONFIG 0 [00-ff]
---
> e0000000-efffffff : PCI MMCONFIG 0000 [bus 00-ff]

27d26
<   fdc00000-fdc1ffff : 0000:02:00.0
30a30
> fddc0000-fdddffff : 0000:02:00.0

42c42
<   fec00000-fec00fff : IOAPIC 0
---
> fec00000-fec003ff : IOAPIC 0

dmesg shows some differences in the memory maps
but I'll need to do further investigation to
be able to interpret these differences:

$ diff broken.dmesg working.dmesg
3,12c3
< Linux version 2.6.32.10-90.fc12.i686 ([e-mail]) (gcc version 4.4.4 20100630 (Red Hat 4.4.4-10) (GCC) ) #1 SMP Fri Aug 13 11:59:33 IST 2010
---
> Linux version 2.6.35.4-28.fc14.i686 ([e-mail]) (gcc version 4.5.1 20100907 (Red Hat 4.5.1-3) (GCC) ) #1 SMP Wed Sep 15 02:03:44 UTC 2010

22a14
> Notice: NX (Execute Disable) protection cannot be enabled: non-PAE kernel!

25a18,19
> e820 update range: 0000000000000000 - 0000000000001000 (usable) ==> (reserved)
> e820 remove range: 00000000000a0000 - 0000000000100000 (usable)

55c49,50
< initial memory mapped : 0 - 01000000
---
> initial memory mapped : 0 - 01800000
> found SMP MP-table at [c00f3860] f3860

57d51
< Using x86 segment limits to approximate NX protection
61,62c55,56
< kernel direct mapping tables up to 1f6e0000 @ 10000-16000
< RAMDISK: 1e6b6000 - 1f6bf3e3
---
> kernel direct mapping tables up to 1f6e0000 @ 15000-1b000
> RAMDISK: 1ef22000 - 1f6df000

79,90c73,87
<   node 0 bootmap 00013000 - 00016edc
< (9 early reservations) ==> bootmem [0000000000 - 001f6e0000]
<   #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]
<   #1 [0000001000 - 0000002000]    EX TRAMPOLINE ==> [0000001000 - 0000002000]
<   #2 [0000006000 - 0000007000]       TRAMPOLINE ==> [0000006000 - 0000007000]
<   #3 [0000400000 - 0000b318d8]    TEXT DATA BSS ==> [0000400000 - 0000b318d8]
<   #4 [001e6b6000 - 001f6bf3e3]          RAMDISK ==> [001e6b6000 - 001f6bf3e3]
<   #5 [000009dc00 - 0000100000]    BIOS reserved ==> [000009dc00 - 0000100000]
<   #6 [0000b32000 - 0000b3606a]              BRK ==> [0000b32000 - 0000b3606a]
<   #7 [0000010000 - 0000013000]          PGTABLE ==> [0000010000 - 0000013000]
<   #8 [0000013000 - 0000017000]          BOOTMAP ==> [0000013000 - 0000017000]
< found SMP MP-table at [c00f3860] f3860
---
> node 0 bootmap 00018000 - 0001bedc
> (13/32 early reservations) ==> bootmem [0000000000 - 001f6e0000]
>   #0 [0000001000 - 0000002000]    EX TRAMPOLINE ==> [0000001000 - 0000002000]
>   #1 [0000400000 - 000130a14c]    TEXT DATA BSS ==> [0000400000 - 000130a14c]
>   #2 [001ef22000 - 001f6df000]          RAMDISK ==> [001ef22000 - 001f6df000]
>   #3 [000130b000 - 000131106a]              BRK ==> [000130b000 - 000131106a]
>   #4 [00000f3870 - 0000100000]    BIOS reserved ==> [00000f3870 - 0000100000]
>   #5 [00000f3860 - 00000f3870]     MP-table mpf ==> [00000f3860 - 00000f3870]
>   #6 [000009f000 - 00000f1e34]    BIOS reserved ==> [000009f000 - 00000f1e34]
>   #7 [00000f1f74 - 00000f3860]    BIOS reserved ==> [00000f1f74 - 00000f3860]
>   #8 [00000f1e34 - 00000f1f74]     MP-table mpc ==> [00000f1e34 - 00000f1f74]
>   #9 [0000010000 - 0000011000]       TRAMPOLINE ==> [0000010000 - 0000011000]
>   #10 [0000011000 - 0000015000]      ACPI WAKEUP ==> [0000011000 - 0000015000]
>   #11 [0000015000 - 0000018000]          PGTABLE ==> [0000015000 - 0000018000]
>   #12 [0000018000 - 000001c000]          BOOTMAP ==> [0000018000 - 000001c000]

94c91
<   HighMem  0x0001f6e0 -> 0x0001f6e0
---
> HighMem  empty

100c97,100
< free_area_init_node: node 0, pgdat c09b9260, node_mem_map c1001200
---
> free_area_init_node: node 0, pgdat c0a42ec0, node_mem_map c1313200
>   DMA zone: 32 pages used for memmap
>   DMA zone: 0 pages reserved
>   DMA zone: 3951 pages, LIFO batch:0

cheers,
Pádraig.