SeaBIOS

seabios@seabios.org

3783 discussions

Re: [SeaBIOS] Intend to flash a Toshiba PS460C-013PM to secure erase the locked Toshiba MK3018GAS HD
by Paul Dufresne 17 May '15

17 May '15

I managed to make a FreeDOS floppy disk with flashrom.exe version 0.9.6.1-r1705 but flashrom -p internal results in Open DMI pipe failed! error message. Which suggest that it could be harder (too hard) to do.

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Intend to flash a Toshiba PS460C-013PM to secure erase the locked Toshiba MK3018GAS HD
by Paul Dufresne 16 May '15

16 May '15

My friend have acquired a cheap Toshiba Satellite Pro 4600. But the hard drive is locked: https://en.wikipedia.org/wiki/Parallel_ATA#HDD_passwords_and_security Well, I was not aware of internal password in hard drive firmware before that. Anyway, the ACPI BIOS in that, is not collaborating. If you don't know the hard disk password, it won't boot... and close computer after 3 failed tries. I have tried to connect the hard drive, while OS was in grub, but then, neither DOS or Linux seems to see the hard disk... (no /dev/sda ... program to remove the password in DOS does not able to see the Hard disk). Quite like when you disable the hard drive in BIOS (which I never understood how it works. So I thought about flashing the laptop with Coreboot/Seabios... which I never did (was not seeing much benefit for the risk). But this time, the possibility to boot the OS then used hdparm or MHDD to secure erase (low-level format) [I believe the password is not necessary for that] seems to make it worth to try. The hardware seems to be Intel Pentium 3, ICH2, i830 chipset. Do you think Seabios would allowed to boot OS with locked drive if I don't know the password? Does this looks like the hardware would be supported by the Seabios (I can give more info on the hardware... because Laptop works well without the hard disk).

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[PATCH] Make CONFIG_ATA_DMA and CONFIG_ATA_PIO32 default on
by Paul Durrant 11 May '15

11 May '15

Currently running make defconfig will leave the above turned off which, at least for the Xen/QEMU use-case, means VMs will boot very slowly. There seems to have been some concern over non-QEMU use of ATA_DMA about five years ago, but I can find no particular concern over ATA_PIO32. Given the increased use of QEMU and Xen in that period it would seem like a good idea to default both of these on now. This patch does that. Signed-off-by: Paul Durrant <paul.durrant(a)citrix.com> --- src/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/Kconfig b/src/Kconfig index 45ca59c..faf8951 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -144,13 +144,13 @@ menu "Hardware support" config ATA_DMA depends on ATA bool "ATA DMA" - default n + default y help Detect and try to use ATA bus mastering DMA controllers. config ATA_PIO32 depends on ATA bool "ATA 32bit PIO" - default n + default y help Use 32bit PIO accesses on ATA (minor optimization on PCI transfers). config AHCI -- 1.7.10.4

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[PATCH v9 0/6] Add TPM support to SeaBIOS
by Stefan Berger 09 May '15

09 May '15

This is a repost of a series of patches providing TPM support to SeaBIOS. As an addition, this patch series now works on the Acer C720 Chromebook with limitations (S3 not getting invoked; no logging into TCPA table). The patch series cleanly applies to a checkout of a1ac8861. The following set of patches add TPM and Trusted Computing support to SeaBIOS. In particular the patches add: - a TPM driver for the Qemu's TPM TIS emulation - Support for initialzation of the TPM - init of TCPA logging table - Support for the TCG BIOS extensions (1ah handler [ah = 0xbb]) (used by trusted grub; http://trousers.sourceforge.net/grub.html) - Static Root of Trusted for Measurement (SRTM) support - Support for S3 resume (sends command to TPM upon resume) - Support for sending control messages from the OS to the BIOS and have the BIOS control certain life-cycle aspects of the TPM following those messages - TPM-specific menu for controlling aspects of the TPM All implementations necessarily follow specifications. When all patches are applied the following services are available - SSDT ACPI table for TPM support - initialization of the TPM upon VM start and S3 resume - Static root of trust for measurements (SRTM) that measures (some) data of SeaBIOS in TCPA ACPI table - 1ah interrupt handler offering APIs for measuring and sending commands to the TPM (trusted grub uses them) - With an extensions to QEMU's TPM SSDT: The root user in Linux (for example) can send the above mentioned control messages to the BIOS and have the BIOS act upon them - User menu for controlling aspects of the state of the TPM Stefan Berger (6): Add an implementation of a TPM TIS driver Implementation of the TCG BIOS extensions Support for BIOS interrupt handler Add 'measurement' code to the BIOS Support for TPM Physical Presence Interface Add a menu for TPM control Makefile | 5 +- src/Kconfig | 7 + src/boot.c | 28 +- src/cdrom.c | 11 + src/clock.c | 12 + src/config.h | 1 + src/hw/tpm_drivers.c | 291 +++++++ src/hw/tpm_drivers.h | 90 +++ src/optionroms.c | 4 + src/post.c | 12 + src/resume.c | 2 + src/sha1.c | 145 ++++ src/sha1.h | 8 + src/std/acpi.h | 20 + src/tcgbios.c | 2181 ++++++++++++++++++++++++++++++++++++++++++++++++++ src/tcgbios.h | 456 +++++++++++ src/util.h | 2 + src/x86.h | 7 + 18 files changed, 3277 insertions(+), 5 deletions(-) create mode 100644 src/hw/tpm_drivers.c create mode 100644 src/hw/tpm_drivers.h create mode 100644 src/sha1.c create mode 100644 src/sha1.h create mode 100644 src/tcgbios.c create mode 100644 src/tcgbios.h -- 1.9.3

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Re: [SeaBIOS] Sun Ultra 40 M2 - VGA Card Option Rom not detected
by Kevin O'Connor 08 May '15

08 May '15

On Thu, May 07, 2015 at 12:29:47PM -0700, Nick wrote: > Hi Kevin, > > Thanks for taking a look and thanks for your suggestions. > > So, SeaBIOS is not designed to detect and run a VGA option rom from a PCIe > video card? I was hoping that I could get SeaBIOS to act similar to the > vendor BIOS and not have to use a serial based console. SeaBIOS can use VGA on PCIe cards - the problem appears to be that SeaBIOS isn't scanning all the PCI buses on the machine. Try setting extra-pci-roots as described previously. > Any ideas on SeaBIOS not booting from hard disks or USB storage devices? I suspect the problem with USB storage is really just a result of VGA not working and the behavior of third-party bootloaders when a vgabios isn't found. See my previous email. -Kevin

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Re: [SeaBIOS] Sun Ultra 40 M2 - VGA Card Option Rom not detected
by Kevin O'Connor 08 May '15

08 May '15

On Thu, May 07, 2015 at 08:52:17AM -0700, Nick wrote: > Hi guys, > > I just got coreboot with SeaBIOS payload up and running on a previously > unsupported system. The system is a Sun Ultra 40 M2 which is very similar > to the NVIDIA l1_2pvv development board (which already has a coreboot port.) > > Coreboot detects the VGA card and outputs the text "found VGA at PCI: > 43:00.0", however, SeaBIOS does not seem to be able to detect the VGA card > and doesn't seem to enumerate that bus. It would appear that the option rom > is not being ran. It looks like your board has multiple "root" PCI busses (either that or coreboot is doing something peculiar with pci). To support this, seabios needs the CBFS file 'etc/extra-pci-roots' to be set - see: http://www.coreboot.org/SeaBIOS#Other_Configuration_items Ideally, one would set this to the number of extra PCI roots (eg, 1 or 2), but it can also be set to 255 to force a scan of every PCI bus (which takes a little longer on each boot). > Here's a simple diagram showing roughly how devices are connected on the > board: http://ibin.co/20n6DtSrgZSv > > Here's the console output (SeaBIOS log level 8): > http://pastebin.com/jKu21dTV > > SeaBIOS also detects USB mass storage and hard disk drives, but can not > boot from them. There's a HALT statement and a bunch of errors (also seen > in the log file.) The boot device was a USB mass storage device with linux > installed and boots successfully with the vendor bios. I don't see anything wrong in the log - those messages all appear normal. It's not uncommon for bootloaders to get confused when a vgabios isn't present, so I'd track that down first. If you can't get VGA working, consider installing sgabios as described at: http://www.coreboot.org/SeaBIOS#Adding_sgabios_support -Kevin

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Sun Ultra 40 M2 - VGA Card Option Rom not detected
by Nick 08 May '15

08 May '15

Hi guys, I just got coreboot with SeaBIOS payload up and running on a previously unsupported system. The system is a Sun Ultra 40 M2 which is very similar to the NVIDIA l1_2pvv development board (which already has a coreboot port.) Coreboot detects the VGA card and outputs the text "found VGA at PCI: 43:00.0", however, SeaBIOS does not seem to be able to detect the VGA card and doesn't seem to enumerate that bus. It would appear that the option rom is not being ran. Here's a simple diagram showing roughly how devices are connected on the board: http://ibin.co/20n6DtSrgZSv Here's the console output (SeaBIOS log level 8): http://pastebin.com/jKu21dTV SeaBIOS also detects USB mass storage and hard disk drives, but can not boot from them. There's a HALT statement and a bunch of errors (also seen in the log file.) The boot device was a USB mass storage device with linux installed and boots successfully with the vendor bios. Thanks in advance! -Nick

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Problem with USB keyboard and mouse
by Anteja Vuk Macek 07 May '15

07 May '15

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Problem with USB keyboard and mouse
by Anteja Vuk Macek 07 May '15

07 May '15

Hi, I'm begin with coreboot and seaBIOS. I have the problem with USB keyboard and mouse. When I boot the firmware my keyboard and mouse don't work. I use : coreboot, payload seaBios, MinnowMax board Problem: What I need to do for correct a firmware? Best regards, *Anteja Vuk - Maček * *Software Engineer* *Dolotron d.o.o.* *Ziskovec 141* *HR-40000 Cakovec* *Croatia* *Tel: ++385 (40) 865 205* *Fax: ++385 (40) 865 732* mailto: anteja.vm(a)dolotron.com _________________________________

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SeaBIOS not fully working when compiled on FreeBSD
by Roger Pau Monné 02 May '15

02 May '15

Hello, I've compiled SeaBIOS on FreeBSD with gcc48, and although the build process succeeds, the resulting binary doesn't fully work. Most functions seem to work fine but there are some int15h functions that don't work properly (ie: they return invalid values). I've compiled SeaBIOS with CONFIG_DEBUG_LEVEL=10 and got the following output (this is from the Xen console): [...] (d4) enter handle_1a: (d4) a=00000200 b=00000000 c=00001725 d=00003400 ds=4cf0 es=9eb8 ss=dd00 (d4) si=00000004 di=00000000 bp=00000000 sp=0000fe66 cs=0000 ip=9336 f=0242 (d4) enter handle_1a: (d4) a=00000200 b=00000000 c=00001725 d=00003400 ds=4cf0 es=9eb8 ss=dd00 (d4) si=00000004 di=00000000 bp=00000000 sp=0000fe66 cs=0000 ip=9336 f=0242 (d4) enter handle_1a: (d4) a=00000200 b=00000000 c=00001725 d=00003400 ds=4cf0 es=9eb8 (XEN) irq.c:386: Dom4 callback via changed to Direct Vector 0x93 (XEN) irq.c:276: Dom4 PCI link 0 changed 5 -> 0 (XEN) irq.c:276: Dom4 PCI link 1 changed 10 -> 0 (XEN) irq.c:276: Dom4 PCI link 2 changed 11 -> 0 (XEN) irq.c:276: Dom4 PCI link 3 changed 5 -> 0 (d4) enter handle_15: And that's all, there's no line containing the register values. I'm quite lost at figuring what's going on, so any help about how to proceed in order to debug this is highly appreciated. Thanks, Roger.

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