Kevin O'Connor [Wed, 12 Aug 2015 16:58:23 +0000 (12:58 -0400)]
sdcard: Implement timeout on every block read in sdcard_pio_transfer()
The sdcard specs don't specify a maximum time for arbitrary transfers.
Instead, each block has a maximum timeout. So, change the code to
check for a timeout on each block transferred.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Mon, 10 Aug 2015 19:37:13 +0000 (15:37 -0400)]
optionroms: Don't run option rom on PCI bar if CBFS/fw_cfg version exists
If there exists a "pci%04x,%04x.rom" file in CBFS/fw_cfg then the code
should not attempt to run a rom found on the PCI device itself - even
if the one in CBFS/fw_cfg is not a valid rom. This makes the code
match the documentation.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Julius Werner [Sat, 8 Aug 2015 03:07:12 +0000 (20:07 -0700)]
xhci: Count new Max Scratchpad Bufs bits from XHCI 1.1
The 1.1 revision of the XHCI specification added an extra 5 bits to the
Max Scratchpad Bufs field of HCSPARAMS2 that newer controllers make use
of. Not honoring these bits means we're not allocating as many
scratchpad buffers as the controller expects, which means it will
interpret some uninitialized values from the end of the pointer array as
scratchpad buffer pointers.
We just fixed this in libpayload and it seems to apply the same way to
SeaBIOS (I only compile-tested this, though... sorry).
Signed-off-by: Julius Werner <jwerner@chromium.org>
Kevin O'Connor [Mon, 3 Aug 2015 14:16:39 +0000 (10:16 -0400)]
mptable: Don't create mptable if it is very large
Very large mptable structures can fill up the space in the f-segment
and cause other important f-segment allocations to fail. Limit the
maximum size of the mptable to prevent this.
On QEMU, with the current maximum size of 600 bytes, the mptable will
not be created in configurations of ~20 cpus or more. The mptable is
rarely used in modern OSes so this should not be a problem.
Reported-by: Huaitong Han <huaitong.han@intel.com> Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Thu, 23 Jul 2015 13:19:23 +0000 (09:19 -0400)]
ramdisk: Allow ramdisk support (CONFIG_FLASH_FLOPPY) under QEMU
Don't require coreboot to use CONFIG_FLASH_FLOPPY - with the latest
QEMU, it's possible to place a floppy image into fw_cfg using the qemu
command line (eg, "-fw_cfg name=floppyimg/MyFloppy,file=file.img").
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Thu, 23 Jul 2015 12:36:01 +0000 (08:36 -0400)]
timer: Add CONFIG_TSC_TIMER build option to disable the CPU TSC timer
Allow users to remove the CPU timestamp counter support at compile
time. The PMTIMER is frequently used instead of the TSC and this
compile time option allows one to strip a few bytes from the final
binary. This change also defaults the internal timer to use the PIT
based timer until the PMTIMER or TSC is detected.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Wed, 22 Jul 2015 20:06:27 +0000 (16:06 -0400)]
timer: Delay timestamp counter init until after pmtimer is probed
Delay call to timer_setup() until after the xxx_platform_setup() calls
so that the pmtimer can be detected first. Most modern machines will
have a pmtimer and calibrating the timestamp counter is frequently
unnecessary.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Wed, 22 Jul 2015 18:32:28 +0000 (14:32 -0400)]
ps2: Don't wait 100ms to discard possible extra reset receive byte
The existing PS2 port code waits 100ms to see if the device attached
to the keyboard port responds to a reset command with two bytes
(instead of the normal one byte). If an extra byte is received, it is
discarded.
Receiving two bytes would be unusual and waiting to check for that
event is unnecessary because the next command in the keyboard init
sequence already seamlessly discards any extra bytes in the command
queue.
This patch eliminates the 100ms wait, which notably reduces the
SeaBIOS boot time on QEMU. This patch also forces PS2 mice to always
respond with two bytes during a reset sequence (instead of just one
byte), which is a good sanity check.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Tue, 14 Jul 2015 19:44:26 +0000 (15:44 -0400)]
Don't enable interrupts prior to IVT and PIC setup
The machine may crash if an interrupt occurs prior to the setup of the
interrupt vector table (IVT) and programmable interrupt controller
(PIC). This patch makes sure that interrupts remain disabled until
these components are setup.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Tue, 14 Jul 2015 19:12:25 +0000 (15:12 -0400)]
ata: Make sure "chanid" is relative to PCI device for bootorder file
When specifying drives in the bootorder file, the "drive@x" parameter
should be relative to the given PCI device and not relative to the
total number of ATA controllers in the machine. This patch separates
the tracking of "chanid" (channel number relative to a given PCI
devices) from the "ataid" (channel number relative to the total number
of ATA channels).
Reported-by: Jonathan A. Kollasch <jakllsch@kollasch.net> Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Wed, 12 Nov 2014 17:15:34 +0000 (12:15 -0500)]
ps2: Support mode for polling the PS2 port instead of using irqs
Some recent hardware has trouble with routing PS2 port interrupts
while the interrupt controller is in legacy routing mode. This patch
adds a config mechanism (via "etc/ps2-poll-only") to force the PS2
code into a polling only mode so that interrupts are not required.
It is not recommended to use this polling mode on hardware that does
properly support PS2 irqs, because some very old (DOS-era) programs
depend on the BIOS PS2 irq behavior.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Wed, 8 Jul 2015 23:05:54 +0000 (19:05 -0400)]
coreboot: Try to auto-detect if the CBFS anchor pointer is a relative pointer
If CONFIG_CBFS_LOCATION is set to a non-zero value then it means the
CBFS flash is not at the very end of memory. In this case, it's
unclear if the anchor pointer is an absolute pointer or if it is
relative to CONFIG_CBFS_LOCATION. Some devices have been using
absolute pointers, but it appears some devices are now using relative
pointers there. Since the anchor pointer almost always points to a
structure in the last 64K of the rom, it should be possible to
auto-detect if the pointer is relative or not.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Tue, 7 Jul 2015 13:53:54 +0000 (09:53 -0400)]
block: Route scsi style commands through 'struct disk_op_s'
Support sending scsi style "command data block" commands (cdbcmd)
through the 'struct disk_op_s' command request structure. And change
the blockcmd.c and cdrom.c code to route these commands through the
process_op() code.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Tue, 7 Jul 2015 13:01:52 +0000 (09:01 -0400)]
block: Introduce default_process_op() with common command handling codes
Most disk drivers only implement a couple of the available bios
commands. Unify the common fallback handling code into a new function
default_process_op() to reduce boiler-plate code.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor [Tue, 7 Jul 2015 12:35:51 +0000 (08:35 -0400)]
block: Split process_op() command dispatch up into multiple functions
Introduce process_op_32(), process_op_16(), and process_op_both() and
split the disk driver command dispatch by its runtime mode
requirements. This makes it more clear which modes each driver runs
in. It also reduces the call32() boiler-plate code.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Gerd Hoffmann [Thu, 25 Jun 2015 07:36:16 +0000 (09:36 +0200)]
virtio: add struct vp_device
For virtio 1.0 support we will need more state than just the (legacy
mode) ioaddr for each virtio-pci device. Prepare for that by adding
a new struct for it. For now it carries the ioaddr only.
Gerd Hoffmann [Fri, 26 Jun 2015 07:44:00 +0000 (09:44 +0200)]
virtio: run drivers in 32bit mode
virtio version 1.0 registers can (and actually do in the qemu
implementation) live in mmio space. So we must run the blk and
scsi virtio drivers in 32bit mode, otherwise we can't access them.
This also allows to drop a bunch of GET_LOWFLAT calls from the virtio
code in the following patches.
Gerd Hoffmann [Thu, 25 Jun 2015 08:49:10 +0000 (10:49 +0200)]
pci: allow to loop over capabilities
Add a parameter to pci_find_capability, to specify the start point.
This allows to find multiple capabilities of the same type, by calling
pci_find_capability again with the offset of the last capability found.
Unlike planned earlier virtio-vga will be compatible with
the qemu stdvga, with the framebuffer in bar 0. Drop the
virtio-vga chunk, update comment accordingly.
Kevin O'Connor [Wed, 3 Jun 2015 23:17:12 +0000 (19:17 -0400)]
build: Support "make VERSION=xyz" to override the default build version
Add a build option to explicitly set the version information compiled
into the seabios and seavgabios binaries. This may assist in
reproducible builds or to better link builds to distribution packages.
If the new "VERSION=" parameter is not provided then the default build
version remains unchanged.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Stefan Berger [Tue, 26 May 2015 19:48:33 +0000 (15:48 -0400)]
Add 'measurement' code to the BIOS
This patch adds invocations of functions that measure various parts of the
code and data through various parts of the BIOS code. It follows TCG
specifications on what needs to be measured. It also adds the implementation
of the called functions.
Reference for what needs to be measured can be found in specs found here:
The first measurements are done once the ACPI tables have been initialized.
Once booted into Linux, the current measurements produce the following logs
which can be found in /sys/kernel/security/tpm0/ascii_bios_measurements.
The below log also shows measurements from trusted grub.
I've been successfully using SeaBIOS as secondary bootloader. In more details
I have GRUB2-as-payload in flash together with coreboot. SeaBIOS binary is on
the HDD and loaded by GRUB when needed. This has an unfortunate consequence
that I have to keep vga oprom in flash even if usually I boot without it. This
patches makes bios.bin.elf multiboot executable with files passed as modules.
Example:
Stefan Berger [Mon, 23 Mar 2015 18:22:17 +0000 (14:22 -0400)]
Support for BIOS interrupt handler
This patch implements the TCG BIOS interrupt handler 1ah. It is for
example used by trusted grub.
This patch adds an implementation of SHA1 (following NIST specs., IETF RFC 3147
and Wikipedia) for speeding up measurements of code. Trusted Grub for example
makes use of this interface and measures (calculates SHA1) of the Linux kernel
and initrd. Those files can be rather large and hunting their bytes through
the TIS interface as part of the int handler commands invoked by trusted grub
does take quite some time due to the many vmexits the interface is creating
(one per byte).
There is also a threshold for the size of data to hash (100k) below which
the TPM is used and above the internal faster SHA1 algorithm is used.
This patch for example enables trusted grub to interact with the TPM
and take additional measurements.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Stefan Berger [Mon, 23 Mar 2015 18:22:16 +0000 (14:22 -0400)]
Implementation of the TCG BIOS extensions
This patch implements the main part of the TCG BIOS extensions. It provides
the following functionality:
- initialization of the TCPA ACPI table used for logging of measurements
- initialization of the TPM by sending a sequence of commands to it
- proper setup of the TPM before the BIOS hands over control to the bootloader
- support for S3 resume; BIOS sends TPM_Startup(ST_STATE) to TPM
- enable configuration of SeaBIOS to be built with TCGBIOS extensions
All TCG BIOS extensions are activated with CONFIG_TCGBIOS.
Structures that are needed in subsequent patches are also included in
tcgbios.h at this point.
The effect of this patch is that it initialized the TPM upon VM start
and S3 resume.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Stefan Berger [Mon, 23 Mar 2015 18:22:15 +0000 (14:22 -0400)]
Add an implementation of a TPM TIS driver
This patch adds an implementation of a TPM TIS driver for the TPM TIS
emulation supported by QEMU. The driver is broken up into several
small functions that have to be called in proper sequence. The driver is
cleanly separated from the rest of the code through an interface holding
pointers to the driver's functions.
A client using this driver first probes whether the TPM TIS
interface is available (probe function) and then invokes the interface
function to initialze the interface and send requests and receive responses.
Possible future extensions *could* include a virtio interface for the TPM
with a corresponding driver here.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
projects / seabios.git / log