#95: Run coreboot in VirtualBox
by coreboot
#95: Run coreboot in VirtualBox
---------------------------------+------------------------------------------
Reporter: uwe | Owner: somebody
Type: defect | Status: new
Priority: minor | Milestone:
Component: misc | Version:
Keywords: | Dependencies:
Patchstatus: there is no patch |
---------------------------------+------------------------------------------
It would be nice if we could test coreboot images in VirtualBox, see
http://virtualbox.org/.
VirtualBox does not (yet) provide a simple mechanism to use a different
BIOS in their emulated machines (something like "-L" in qemu). Instead the
BIOS image (a custom bochs BIOS + LGPL'g VGABIOS) is converted to C code
(an array of bytes, or the like) and merged into the VirtualBox
executable.
The relevant files are
{{{
src/VBox/Devices/PC/DevPcBios.cpp
bldprogs/bin2c.c
}}}
if someone want to hack VirtualBox to easily support using coreboot images
instead of their usual BIOS.
--
Ticket URL: <http://tracker.coreboot.org/trac/coreboot/ticket/95>
coreboot <http://www.coreboot.org/>
4 years, 5 months
EHCI debug port finder
by Carl-Daniel Hailfinger
I wanted to know which physical port of my multiple USB controllers have
the debug capability. There was no way to find that easily, so I created
a tool which will do most of the work for the user.
Example output:
The following PCI devices support a USB debug port (says lspci):
0000:00:1d.7
The following PCI devices support a USB debug port (says the kernel):
0000:00:1d.7
PCI device 0000:00:1d.7, USB bus 3, USB physical port 1
Currently connected high-speed devices:
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/6p, 480M
|__ Port 2: Dev 20, If 0, Class=stor., Driver=usb-storage, 480M
The output can be improved, but it's a good start.
Regards,
Carl-Daniel
--
http://www.hailfinger.org/
4 years, 12 months
Dual SPI Flash adapter attempt 2.0
by Oliver Schinagl
Hi list(s),
Here's my second attempt at routing the previously mailed png of my schema.
It was a lot trickier to route then my previous version, but I think it
worked out!
As mentioned, S1 and S2 need to be shorted if U3 is to be omitted. RN1
should be 10k or ideally 100k, as Peter mentioned earlier.
Hopefully there's no obvious mistakes and can start working on
alternative layouts (so it is insert-able in different angles).
DRC Check fails on S1, S2 and U3. It thinks the distance is to shallow.
That said, DRC check passes when I set the copper width/distance to
7mil's instead of the current 8 mils.
I'm planning on having these PCB's manufactured by Seeed studio and
their minimal width is much smaller.
Minimum trace width: 6mil
Minimum trace/vias/pads space : 6mil
Minimum silkscreen width : 4mil
Minimum silkscreen text size : 32mil
I've used a grid size of 10mil and distances of 8 mils, as I didn't want
to rely on the minimum of seed. The silkscreen I positioned using a grid
size of 5 mil's however. Not sure what they mean with a 'minimum
silkscreen text size' however.
Anyhow, feedback greatly appreciated, so I can start working on
alternative layouts :)
5 years, 2 months
fixed AMD SPI speed settings (leading to problems on E350M1/USB3)
by Stefan Tauner
Hi,
andor reported a problem where flashrom does reproducibly not work with
coreboot but does with the vendor BIOS
http://paste.flashrom.org/view.php?id=1614
Apparently it is related to fast reads and/or the frequency.
We have forced the fastReadEnable bit in the SPI_Cntrl0 from 1 to 0 and
also set NormSpeed in SPI_Cntrl1 to 16.5 Mhz (previously was 0 i.e. 66
MHz) in flashrom and the problem vanished.
Coreboot hard codes the fast read setting in
src/southbridge/amd/cimx/sb800/bootblock.c:
static void enable_spi_fast_mode(void)
{
u8 byte;
u32 dword;
device_t dev = PCI_DEV(0, 0x14, 0x03);
// set temp MMIO base
volatile u32 *spi_base = (void *)0xa0000000;
u32 save = pci_io_read_config32(dev, 0xa0);
pci_io_write_config32(dev, 0xa0, (u32) spi_base | 2);
// early enable of SPI 33 MHz fast mode read
byte = spi_base[3];
spi_base[3] = (byte & ~(3 << 14)) | (1 << 14);
spi_base[0] = spi_base[0] | (1 << 18); // fast read enable
pci_io_write_config32(dev, 0xa0, save);
}
Marc suggested that this should be configurable in the devicetree or by
a kconfig setting. Also, the statements using "byte" do not make a lot
of sense to me. Shouldn't that be a u32 instead?
The public documentation of the fastReadEnable is lacking any detail
and I don't have access to the NDAed version of the RRG. Is my theory
correct that the controller uses the 0x0B opcode with a fixed frequency
(33 MHz?) instead of 0x03 with the frequency set by NormSpeed?
--
Kind regards/Mit freundlichen Grüßen, Stefan Tauner
5 years, 3 months
#186: 3com 3c905tx / gpxe boot problem
by coreboot
#186: 3com 3c905tx / gpxe boot problem
-----------------------------------+----------------------------------
Reporter: jeroenkrabbendam@… | Owner: stepan@…
Type: defect | Status: new
Priority: minor | Milestone:
Component: coreboot | Keywords: gpxe
Dependencies: | Patch Status: there is no patch
-----------------------------------+----------------------------------
Although (or: just because) novice in the field, I encountered some
problems with netbooting with coreboot.
Mobo's tried: Asus P2B, VTech with bios id ITE8671-2A69KV3IC-00. All
mobo's boot '''harddisk''' fine with Asus P2B / Gigabyte GA-6BX{CE}
respectively.
NIC ROM is started, and loads the kernel by tftp. This is vvvveeeerrrryyy
slow! Although loading, the kernel is never able to start itself. Same
kernel on HDU is no problem at all (GRUB2)
Note: the gpxe-image is on the nic, coreboot payload is seabios.
--
Ticket URL: <https://tracker.coreboot.org/trac/coreboot/ticket/186>
coreboot <http://www.coreboot.org/>
5 years, 4 months
Super I/O: Nuvoton NCT6779D support (Incomplete and stuck)
by Alec Ari
Hello everyone! Please note I am not subscribed to the coreboot mailing list so if you want to contact me, please do so directly or CC my email address.
I wrote an incomplete port to the Nuvoton NCT6779D Super I/O chip ( http://review.coreboot.org/4589 ) I am not sure if publicly sharing the datasheet is OK or not (if it is alright, let me know so I can post it as I am not under an NDA with Nuvoton by any means) but anyone with Super I/O and general hardware / electrical engineering should be able to easily finish up the port as most of the work is already done and just needs some tidying up (comments in patch indicate possible issues and things I am stuck on.)
The Super I/O is currently used with several ASUS boards such as some of their Intel Z77 chipset motherboards (Sabertooth and Maximus V series) F2A85V-PRO (AMD FM2 A-series CPUs) and possibly a few others. A few other coreboot developers are working on some boards right now that use it, so hopefully my patch will assist their efforts.
Thank you, happy coding, and New Years.
Alec Ari
5 years, 4 months
Asus M2V-MX SE: Resume from S3 broken: `CBFS: ERROR: No file header found at 0x0 - try next aligned address: 0x40.`
by Paul Menzel
Dear coreboot folks,
using coreboot with the attached configuration (with CBMEM) on the Asus
M2V-MX SE [1], resume from S3 does not work for me.
$ more serial.log
[…]
[ 818.013737] PM: Syncing filesystems ... done.
[ 818.021643] (NULL device *): firmware: agent loaded rt2870.bin into memory
[ 818.028721] Freezing user space processes ... (elapsed 0.01 seconds) done.
[ 818.050706] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
[ 818.070691] Suspending console(s) (use no_console_suspend to debug)
coreboot-4.0-5045-g0fd505b Tue Dec 17 00:36:07 CET 2013 starting...
now booting...
Enabling routing table for node 00 done.
Enabling UP settings
Disabling read/write/fill probes for UP... done.
coherent_ht_finalize
done
core0 started:
now booting... All core 0 started
started ap apicid:
SBLink=00
NC node|link=00
00entering optimize_link_incoherent_ht
sysinfo->link_pair_num=0x1
entering ht_optimize_link
pos=0x8a, unfiltered freq_cap=0x8035
pos=0x8a, filtered freq_cap=0x35
Limiting HT to 800/600/400/200 MHz until K8M890 HT1000 is fixed.
pos=0x6e, unfiltered freq_cap=0x75
pos=0x6e, filtered freq_cap=0x75
Limiting HT to 800/600/400/200 MHz until K8M890 HT1000 is fixed.
freq_cap1=0x35, freq_cap2=0x35
dev1 old_freq=0x0, freq=0x5, needs_reset=0x1
dev2 old_freq=0x0, freq=0x5, needs_reset=0x1
width_cap1=0x11, width_cap2=0x11
dev1 input ln_width1=0x4, ln_width2=0x4
dev1 input width=0x1
dev1 output ln_width1=0x4, ln_width2=0x4
dev1 input|output width=0x11
old dev1 input|output width=0x11
dev2 input|output width=0x11
old dev2 input|output width=0x11
after ht_optimize_link for link pair 0, reset_needed=0x1
after optimize_link_read_pointers_chain, reset_needed=0x1
01K8M890 found at LDT 00 Agreed on width: 01 CPU programmed to HT freq: 05 VIA HT caps: 0075
01ht reset -
soft reset
coreboot-4.0-5045-g0fd505b Tue Dec 17 00:36:07 CET 2013 starting...
now booting...
Enabling routing table for node 00 done.
Enabling UP settings
Disabling read/write/fill probes for UP... done.
coherent_ht_finalize
done
core0 started:
now booting... All core 0 started
started ap apicid:
SBLink=00
NC node|link=00
00entering optimize_link_incoherent_ht
sysinfo->link_pair_num=0x1
entering ht_optimize_link
pos=0x8a, unfiltered freq_cap=0x8035
pos=0x8a, filtered freq_cap=0x35
Limiting HT to 800/600/400/200 MHz until K8M890 HT1000 is fixed.
pos=0x6e, unfiltered freq_cap=0x75
pos=0x6e, filtered freq_cap=0x75
Limiting HT to 800/600/400/200 MHz until K8M890 HT1000 is fixed.
freq_cap1=0x35, freq_cap2=0x35
dev1 old_freq=0x5, freq=0x5, needs_reset=0x0
dev2 old_freq=0x5, freq=0x5, needs_reset=0x0
width_cap1=0x11, width_cap2=0x11
dev1 input ln_width1=0x4, ln_width2=0x4
dev1 input width=0x1
dev1 output ln_width1=0x4, ln_width2=0x4
dev1 input|output width=0x11
old dev1 input|output width=0x11
dev2 input|output width=0x11
old dev2 input|output width=0x11
after ht_optimize_link for link pair 0, reset_needed=0x0
after optimize_link_read_pointers_chain, reset_needed=0x0
00K8M890 found at LDT 00 Agreed on width: 01 CPU programmed to HT freq: 05 VIA HT caps: 0075
00after enable_fid_change
toggle LDTSTP#
done
Current fid_cur: 0x2, fid_max: 0xa
Requested fid_new: 0xa
FidVid table step fidvid: 0xa
toggle LDTSTP#
done
toggle LDTSTP#
done
Ram1.00
setting up CPU 00 northbridge registers
done.
Ram2.00
sdram_set_spd_registers: paramx :000cfee0
Device error
Device error
Enabling dual channel memory
Unbuffered
400MHz
400MHz
set_ecc: ECC disabled
Interleaved
RAM end at 0x00200000 kB
Ram3
IN TEST WAKEUP
400Wakeup!
before resume errata #125
before exit errata - timer enabled
before exit errata - after mdelay
pcidev is 8000c290
after exit errata
Exiting memory from self refresh: done
DQS RESTORE FROM NVRAM: c2000
Loading 113222 of size 4 to nvram pos:0
Loading 18181718 of size 4 to nvram pos:4
Loading 17171617 of size 4 to nvram pos:8
Loading 16 of size 1 to nvram pos:12
Loading 202520 of size 4 to nvram pos:13
Loading 14141413 of size 4 to nvram pos:17
Loading 16141415 of size 4 to nvram pos:21
Loading 14 of size 1 to nvram pos:25
Loading 29 of size 1 to nvram pos:26
Loading 0 of size 1 to nvram pos:27
Loading 0 of size 1 to nvram pos:28
Loading 0 of size 1 to nvram pos:29
Loading 113222 of size 4 to nvram pos:30
Loading 18171717 of size 4 to nvram pos:34
Loading 16161717 of size 4 to nvram pos:38
Loading 17 of size 1 to nvram pos:42
Loading 202520 of size 4 to nvram pos:43
Loading 14151514 of size 4 to nvram pos:47
Loading 15151414 of size 4 to nvram pos:51
Loading 14 of size 1 to nvram pos:55
Loading 2c of size 1 to nvram pos:56
Loading 0 of size 1 to nvram pos:57
Loading 0 of size 1 to nvram pos:58
Loading 0 of size 1 to nvram pos:59
Loading 7410809b of size 4 to nvram pos:60
Mem running !
Ram4
v_esp=000cff28
IN TEST WAKEUP
400IN TEST WAKEUP
400CBMEM region 7dec0000-7dffffff (cbmem_reinit)
IN TEST WAKEUP
400Will copy coreboot region to: 7dedc200
Copying data from cache to RAM -- switching to use RAM as stack... Done
Disabling cache as ram now
Clearing initial memory region: Loading image.
CBFS: ERROR: No file header found at 0x0 - try next aligned address: 0x40.
It then just hangs there.
$ sudo ./cbmem -l
CBMEM table of contents:
ID START LENGTH
0. FREE SPACE 7dfe4200 0001be00
1. GDT 7dec0200 00000200
2. CONSOLE 7dec0400 00010000
3. TIME STAMP 7ded0400 00000200
4. ACPI 7ded0600 0000b400
5. SMBIOS 7dedba00 00000800
6. ACPI RESUME 7dedc200 00100000
7. COREBOOT 7dfdc200 00008000
$ sudo cbmem -t # truncated with the error message
10 entries total:
10:start of ramstage
Could not open /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq: No such file or directory
Thanks,
Paul
[1] http://www.coreboot.org/ASUS_M2V-MX_SE
5 years, 4 months
Re: [coreboot] BadBIOS Thoughts
by Alex G.
On 11/20/2013 09:23 AM, ron minnich wrote:
> I've got a student coming in January and he's going to work on
> ChromeOS on AMD CPUs, starting with the Gizmo. If, at that time,
> someone has a suggestion for an AMD laptop which might be suitable,
> let me know.
Would you care to elaborate on that?
As much as I hate HP, they do seem to have some of the best AMD-based
laptops. I would look at the ProBook 655 G1 / 645 G1 or the HP ProBook
6475b.
Alex
P.S. One fornicating annoying downside is that HP's firmware really
sucks. Suspend-and-not-crash-and-overheat (TM) is sometimes working,
while Resume-and-not-defecate (TM) seems to be slightly more reliable.
5 years, 4 months
Re: [coreboot] Coreboot and the NSA's expressed preference for subverting BIOSes
by Sam Kuper
On 31/12/2013, David Hendricks <david.hendricks(a)gmail.com> wrote:
> On Sun, Dec 29, 2013 at 5:06 PM, David Collier-Brown
> <davecb.42(a)gmail.com>wrote:
>> May I request you loudly announce how one checksums one's coreboot,
>> and in principle other BIOSes, so that one can see if anyone has changed
>> firmware critical to one's security.
>
> For Chromebooks, full verification is built into coreboot and also utilizes
> hardware write-protection
Which other Coreboot-supported systems/motherboards have hardware
write-protection (or can be easily modified to at least write-protect
the BIOS)?
Regards,
Sam
5 years, 4 months
