Linuxbios boots an Opteron motherboard with 1GB memory.
Linuxbios directly loads a recent linux kernel.
The memory layout is like this:
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 0000000000000e18 (reserved)
BIOS-e820: 0000000000000e18 - 00000000000a0000 (usable)
BIOS-e820: 00000000000c0000 - 00000000000f0000 (usable)
BIOS-e820: 00000000000f0000 - 00000000000f0400 (reserved)
BIOS-e820: 00000000000f0400 - 0000000040000000 (usable)
The f0000-f0400 region contains IRQ and ACPI tables.
At some point the kernel builds a resource table containing
all physical address ranges and type of hardware the addresses
are mapped to. The table is accessible via /proc/iomem:
# cat /proc/iomem
00000000-00000e17 : reserved
00000e18-0009ffff : System RAM
000a0000-000bffff : Video RAM area
000c0000-000cbfff : Video ROM
000f0000-000fffff : System ROM
e0000000-efffffff : PCI Bus #03
e0000000-efffffff : 0000:03:00.0
f0000000-f3ffffff : GART
f4000000-f60fffff : PCI Bus #03
f4000000-f4ffffff : 0000:03:00.0
f5000000-f5ffffff : 0000:03:00.0
f6000000-f601ffff : 0000:03:00.0
f6100000-f6100fff : 0000:00:01.0
f6101000-f6101fff : 0000:00:02.0
f6101000-f6101fff : ohci_hcd
f6102000-f6102fff : 0000:00:04.0
f6103000-f6103fff : 0000:00:07.0
f6103000-f6103fff : sata_nv
f6104000-f6104fff : 0000:00:08.0
f6104000-f6104fff : sata_nv
f6105000-f6105fff : 0000:00:0a.0
f6106000-f61060ff : 0000:00:02.1
f6200000-f620ffff : 0000:40:01.0
As you can see, the 00000000000f0400-0000000040000000
region is not listed.
It is not listed because the kernel unconditionally adds
"000f0000-000fffff : System ROM" first (look for
"request_resource(&iomem_resource, &system_rom_resource)"),
and then the attempt to add f0400-40000000 range fails
because of overlapping.
The kernel does not care that the range is not listed there.
Kexec does. It uses the /proc/iomem file to instruct the
kexec system call how to place the segments of a new kernel
in the physical memory. Kexec fails to start a new kernel
because it cannot locate enough physical memory.
This must be fixed either in linux or linuxbios.
Assuming that linuxbios is to be fixed, I cooked a patch
which provides this memory layout:
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 0000000000000e18 (reserved)
BIOS-e820: 0000000000000e18 - 00000000000a0000 (usable)
BIOS-e820: 00000000000c0000 - 00000000000f0000 (usable)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 0000000040000000 (usable)
The /proc/iomem contains:
# cat /proc/iomem
00000000-00000e17 : reserved
00000e18-0009ffff : System RAM
000a0000-000bffff : Video RAM area
000c0000-000cbfff : Video ROM
000f0000-000fffff : System ROM
00100000-3fffffff : System RAM
00100000-00203c61 : Kernel code
00203c62-00248c3f : Kernel data
e0000000-efffffff : PCI Bus #03
e0000000-efffffff : 0000:03:00.0
f0000000-f3ffffff : GART
f4000000-f60fffff : PCI Bus #03
f4000000-f4ffffff : 0000:03:00.0
f5000000-f5ffffff : 0000:03:00.0
f6000000-f601ffff : 0000:03:00.0
f6100000-f6100fff : 0000:00:01.0
f6101000-f6101fff : 0000:00:02.0
f6101000-f6101fff : ohci_hcd
f6102000-f6102fff : 0000:00:04.0
f6103000-f6103fff : 0000:00:07.0
f6103000-f6103fff : sata_nv
f6104000-f6104fff : 0000:00:08.0
f6104000-f6104fff : sata_nv
f6105000-f6105fff : 0000:00:0a.0
f6106000-f61060ff : 0000:00:02.1
f6200000-f620ffff : 0000:40:01.0
Kexec is happier with the patch.
Regards,
Signed-off-by: Roman Kononov <kononov195-lbl@yahoo.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2542 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Signed-off-by: Yinghai Lu <yinghai.lu@amd.com>
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Yinghai Lu <yinghai.lu@amd.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2540 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Signed-off-by: Alan Carvalho de Assis <acassis@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2539 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Also add suport for NVIDIA MCP55.
Signed-off-by: Yinghai Lu <yinghai.lu@amd.com>
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2537 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
heavily on the code for i82801dbm and i82801er
Signed-off-by: Jon Dufresne <jon.dufresne@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2534 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
southbridge_intel_i82801dbm_control should be named
southbridge_intel_i82801dbm_ops. Otherwise a compile error occurs if this
device is included in Config.lb of the mainboard.
Closes#62
Signed-off-by: Jon Dufresne <jon.dufresne@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2526 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Serial output on serial port 1 is tested and works, the rest probably not yet.
Closes#59.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2525 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
into /usr/local/bin. Closes#54.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2524 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
space offset 0x1000, and later is the acpi registers also mapped at 0x1000.
This patch fixes this behavior. Closes#44
Signed-off-by: <chn@virtutech.se>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2523 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
For cache to work the x86_setup_mtrrs() must be called.
Closes#61
Signed-off-by: Jon Dufresne <jon.dufresne@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2522 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
on this board for everyone but me. Closes#58
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de> (trivial patch)
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2521 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Adapt some existing license headers to use the common LinuxBIOS
format. Please note that this does not make any qualitative
license changes, merely cosmetic syntax changes (trivial).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2519 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
#include <device/device.h>
from all *_early_serial.c ITE Super I/O files, as arch/romcc_io.h already
#defines device_t, thus adding device/device.h breaks the build (trivial).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2516 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
serial output might not always work correctly (trivial).
Thanks Philipp Degler <pdegler@rumms.uni-mannheim.de> for testing and
reporting this issue.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2513 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Signed-off-by: Jon Dufresne <jon.dufresne@gmail.com>
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2512 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Luis Correia <luis.f.correia@gmail.com>). The code is loosely based on
the Eaglelion 5bcm mainboard.
Warning: this is work in progress!
As of now, it does boot with serial console only (no vga), and two ethernet
cards work sometimes. This has to do with the IRQ assignments, which are a
complete mess. USB is now apparently working, but I can't make any device
to be recognized.
The PCI slot is still unusable due to the IRQ thing.
Audio, other serial ports, irda, floppy and paralell port support is
unknown aka untested yet.
(closes#32)
Signed-off-by: Luis Correia <luis.f.correia@gmail.com>
Acked-by: Acked-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2508 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
* Added information on the relevant datasheet(s) and where to get them.
* Added missing #defines for some other config bytes.
* Documented all config bytes a bit better.
* Renamed some #defines to hopefully make their names clearer.
(closes#38)
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2506 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Fixed write_page_write_jedec() in jedec.c. Added a check-reprogram loop
in the same function, to come around the high page write failure rate on
some boards.
This patch includes the changes suggested by Ron to simplify the control
flow.
It also includes trivial changes by me to make flashrom build on newer
systems (libpci needs libz now). I also made a small type case compile fix
and proper return code handling in one or two places.
Signed-off-by: Giampiero Giancipoli <gianci@email.it>
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2505 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
flash chips to flashrom (closes: #50).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2501 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
pmtools packages of upcoming SUSE 10.2, too, so the problem will
go away. (new package installed on linuxbios.org, too)
See also
http://www.linuxbios.org/pipermail/linuxbios/2006-September/015968.html
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2498 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
and leaving enough room for a real payload (not /dev/null)
This is a wonderful example why "uses" sucks.
* add Config-abuild.lb for those boards that dont build with
the default settings and a real payload:
arima/hdama, amd/quartet, amd/serengeti_cheetah, ibm/e326
* if lzma is installed and a real payload is used, try compressing
it.
* fix a small bug in "abuild --help"
This patch is acked by me because its due to infrastructural changes only.
Flames welcome.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2496 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Intel 440BX northbridge (Closes#39).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Richard Smith <smithbone@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2495 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
will detect any improper erase, closes#31
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2494 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Add detailed instructions on how and where to get the datasheet,
its name, and order number (Closes#34).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2493 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Roman Kononov