Commit Graph

62 Commits

Author SHA1 Message Date
Daisuke Nojiri 7ab46f8085 libpayload: add timer driver for cygnus
BUG=chrome-os-partner:36011
BRANCH=broadcom-firmware
TEST=measured 10 seconds in depthcharge:

Starting depthcharge on purin...
dpch: time 10
 9 8 7 6 5 4 3 2 1 0

Change-Id: I0bcb01c255b19518bb8440111ac81f056c07ed69
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: f5993bd400dd5d38e62d07bc8ce3513175e0d518
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Reviewed-on: https://chrome-internal-review.googlesource.com/200569
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Queue: Daisuke Nojiri <dnojiri@google.com>
Original-Tested-by: Daisuke Nojiri <dnojiri@google.com>
Original-Change-Id: Id83aae29cec6320d897e0b231d023a9ee885903e
Original-Reviewed-on: https://chromium-review.googlesource.com/256415
Reviewed-on: http://review.coreboot.org/9850
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-21 08:29:10 +02:00
Daisuke Nojiri 1e935bf4e2 cygnus: enable serial driver for depthcharge
BUG=chrome-os-partner:35807
BRANCH=broadcom-firmware
TEST=tested input and output by the cli in depthcharge

Change-Id: Icd517a366a3fe5bdcf9e9aeb4284d7e4378ee3f2
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 02c3b6c82d9d71beb19a0879591c754fa7685362
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Reviewed-on: https://chrome-internal-review.googlesource.com/200568
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-by: Scott Branden <sbranden@broadcom.com>
Original-Commit-Queue: Daisuke Nojiri <dnojiri@google.com>
Original-Tested-by: Daisuke Nojiri <dnojiri@google.com>
Original-Change-Id: I97144fc6f19969b8cf3872939c9c74efaef3604b
Original-Reviewed-on: https://chromium-review.googlesource.com/256413
Reviewed-on: http://review.coreboot.org/9844
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-21 08:25:54 +02:00
Patrick Georgi 1bd3050c27 libpayload: Add USB device mode driver
Add a framework for USB device mode controllers
and a driver for the ChipIdea controller which
is part of the tegra platform.

TODO:
- fix USB detach/attach
- implement zero length packet handling properly

BUG=chrome-os-partner:35861
TEST=none
BRANCH=none

Change-Id: I8defeea78b5a3bdbf9c1b1222c2702eaf3256b81
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 542332291880c4026a05a960ceb91d37891ee018
Original-Change-Id: Ib4068d201dd63ebeda80157bd3130f3059919cdd
Original-Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/243272
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8756
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-18 08:40:19 +02:00
Daisuke Nojiri e18c38e3ba purin: add basic set of files for libpayload
BUG=none
BRANCH=tot
TEST=emerge-purin libpayload depthcharge coreboot chromeos-bootimage

Change-Id: I6a46067a288ecea352a2724c62c62066e3f4a383
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 355371317dde0546fbab2cd109bc17463f77c4fd
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Change-Id: I8c43acc4d270c3b2d7c18af07c077a553e3c6f6f
Original-Reviewed-on: https://chromium-review.googlesource.com/245492
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9753
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-17 09:58:25 +02:00
huang lin 365250e61e libpayload: Add dwc2 usb driver
BUG=chrome-os-partner:29778
TEST=emerge-veyron libpayload

Change-Id: I33f312a939e600b8f4e50a092bb61c5d6bc6d741
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 39ffe53336a2a3b2baa067cdd3dccca5ae93f68e
Original-Change-Id: Idad1ad165fd44df635a0cb13bfec6fada1378bc8
Original-Signed-off-by: huang lin <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/211053
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/9453
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-04-14 10:42:54 +02:00
Julius Werner 120aec0902 serial: Combine Tegra and Rockchip UARTs to generic 8250_mmio32
We have two drivers for a 100%-identical peripheral right now, mostly
because we couldn't come up with a good common name for it back when we
checked it in. That seems like a pretty silly reason in the long run.

Both Tegra and Rockchip SoCs contain UARTs that use the common 8250
register interface (at least for the very basic byte-per-byte transmit
and receive parts we care about), memory-mapped with a 32-bit register
stride. This patch combines them to a single 8250_mmio32 driver (which
also fixes a problem when booting Rockchip without serial enabled, since
that driver forgot to check for serial initialization when registering
its console drivers). The register accesses are done using readl/writel
(as Rockchip did before), since the registers are documented as 32-bit
length (with top 24 bits RAZ/WI), although the Tegra SoC doesn't enforce
APB accesses to have the full word length. Also fixed checkpatch stuff.

A day may come when we can also merge this driver into the (completely
different, with more complicated features and #ifdefs) 8250 driver for
x86 (which has MMIO support for 8-bit register stride only), both here
and in coreboot. But it is not this day. This day I just want to get rid
of a 99% identical file without expending too much effort.

BUG=None
TEST=Booted on Veyron_Pinky and Nyan_Blaze with and without serial
enabled, both worked fine (although Veyron has another kernel issue).

Change-Id: I85c004a75cc5aa7cb40098002d3e00a62c1c5f2d
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: e7959c19356d2922aa414866016540ad9ee2ffa8
Original-Change-Id: Ib84d00f52ff2c48398c75f77f6a245e658ffdeb9
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/225102
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9387
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-10 07:50:21 +02:00
Daisuke Nojiri f8c8703be0 libpayload: Add drivers for bg4cd
BUG=chrome-os-partner:32772
BRANCH=none
TEST=Built chromeos-bootimage
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>

Change-Id: I15cb40532855c89f6fb959652a7e874897eb45bb
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 8f8419fe22cf39d827e566b8f4dbe0680e4106a1
Original-Change-Id: I97f2ac8ffc7232c7a6c6d40deb8a35630d3d62a7
Original-Reviewed-on: https://chromium-review.googlesource.com/222662
Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org>
Original-Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: http://review.coreboot.org/9360
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-08 09:32:21 +02:00
Jim Lin 654cf9c2d8 libpayload: EHCI: Support root-hub TT feature
If EHCI controller has TT (Transaction Translator) support in
root-hub, then we need to keep control over this controller when
USB keyboard (low-speed device) is connected to root-hub port.

Need to add "CONFIG_LP_USB_EHCI_HOSTPC_ROOT_HUB_TT=y" to config file
(e.g. payloads/libpayload/configs/config.nyan_big) to support this
feature.

BUG=chrome-os-partner:32355
TEST=Tested on nyan_big platform.
Press ESC+REFRESH+POWER keys on internal keyboard to power up.
Press Left Arrow or Right Arrow on USB keyboard to switch between
"English" and "Default Locale" in coreboot UI. Or unplug and plug
in device and try again.
Root hub <- low-speed USB keyboard
Root hub <- full-speed hub <- low-speed USB keyboard
Root hub <- high-speed hub <- low-speed USB keyboard

Change-Id: Iaa2823f64c8769fc808ee7a316c378f18f004e63
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 4ad57fd673d6dc8814fe99a4ac420566bb17e77b
Original-Change-Id: Id86a289bc587653b85227c1d50f7a4f476f37983
Original-Signed-off-by: Jim Lin <jilin@nvidia.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/220125
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/8737
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-03-23 17:57:40 +01:00
Ionela Voinescu ce22c02387 libpayload: arch/mips: Add basic MIPS architecture support
Add the basic build infrastructure and architectural support
required to build for targets using the MIPS architecture.
This will require the addition of cache maintenance.

BUG=chrome-os-partner:31438
TEST=tested on Pistachio FPGA with Depthcharge as payload;
     successfully executed payload.
BRANCH=none

Change-Id: I75cfd0536860b6d84b53a567940fe6668d9b2cbb
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 758c8cb9a6846e6ca32be409ec5f7a888ac9c888
Original-Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
Original-Change-Id: I0b9af983bf5032335a519ce2510a0b3aca082edf
Original-Reviewed-on: https://chromium-review.googlesource.com/219740
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8741
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-03-21 11:07:50 +01:00
huang lin ab69984601 libpayload: Add Rock Chip drivers
Add support:
1)Support driver rktimer
2)Support driver rkserial

BUG=chrome-os-partner:29778
TEST=emerge-veyron libpayload

Original-Change-Id: I2cccedf3b62883dd372842a7972e93f2ebbfb282
Original-Signed-off-by: huang lin <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/206184
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Tested-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Queue: Julius Werner <jwerner@chromium.org>
(cherry picked from commit 387450d7c36b201bd177d46eb9f1d280fc043aab)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: Ia6b7a8ee2439a6f2bf7577df822d3f4f3a1e441c
Reviewed-on: http://review.coreboot.org/8127
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
2015-01-12 05:55:30 +01:00
Julius Werner 50a81748fd libpayload: Add remote GDB support
This patch adds the ability to attach a GDB host through the UART to a
running payload. Libpayload implements a small stub that can parse and
respond to the GDB remote protocol and provide the required primitives
(reading/writing registers/memory, etc.) to allow GDB to control
execution.

The goal of this implementation is to be as small and uninvasive as
possible. It implements only the minimum amount of primitives required,
and relies on GDB's impressive workaround capabilities (such as
emulating breakpoints by temporarily replacing instructions) for the
more complicated features. This way, a relatively tiny amount of code on
the firmware side opens a vast range of capabilities to the user, not
just in debugging but also in remote-controlling the firmware to change
its behavior (e.g. through GDBs ability to modify variables and call
functions).

By default, a system with the REMOTEGDB Kconfig will only trap into GDB
when executing halt() (including the calls from die_if(), assert(), and
exception handlers). In addition, payloads can manually call gdb_enter()
if desired. It will print a final "Ready for GDB connection." on the
serial, detach the normal serial output driver and wait for the commands
that GDB starts sending on attach.

Based on original implementation by Gabe Black <gabeblack@chromium.org>.

BUG=chrome-os-partner:18390
TEST=Boot a GDB enabled image in recovery mode (or get it to hit a
halt()), close your terminal, execute '<toolchain>-gdb --symbols
/build/<board>/firmware/depthcharge_gdb/depthcharge.elf --directory
~/trunk/src/third_party/coreboot/payloads/libpayload --directory
~/trunk/src/platform/depthcharge --directory
~/trunk/src/platform/vboot_reference --ex "target remote
<cpu_uart_pty>"' and behold the magic.
(You can also SIGSTOP your terminal's parent shell and the terminal
itself, and SIGCONT them in reverse order after GDB exits. More
convenient wrapper tools to do all this automatically coming soon.)

Original-Change-Id: Ib440d1804126cdfdac4a8801f5015b4487e25269
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/202563
Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
(cherry picked from commit 9c4a642c7be2faf122fef39bdfaddd64aec68b77)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I9238b4eb19d3ab2c98e4e1c5946cd7d252ca3c3b
Reviewed-on: http://review.coreboot.org/8119
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-01-09 07:06:51 +01:00
Julius Werner 22adcd67a2 libpayload: Introduce new Kconfig to explicitly allow GPL code
There have been leaks of GPL code into libpayload for a while now, for
new features or improvements that require third party code with no
adequate alternative among BSD-licensed software. It seems silly and
counter-productive to keep holding back features and performance
improvements from libpayload for a use-case (proprietary payloads) that
doesn't even seem to be implemented anywhere to date. Open-source
payloads should not need to suffer to appease commercial ones.

Instead, this patch introduces a new Kconfig option to explicitly allow
inclusion of GPL code. It will use Kconfig dependencies and/or Makefile
rules to ensure that no GPL code can end up in the final payload if that
option is unset, allowing proprietary payloads to keep working with the
existing BSD-licensed feature set. New features and patches (that are
sufficiently separate and self-contained to allow guarding through this
config option) can choose whether to import GPL code, and need to depend
on this option if they do.

Also clean up all (known) existing uses of GPL code to depend on the new
option, add some recent third-party imports to the LICENSES file, and
relicense the selfboot.c files to BSD with permission of the author.

BUG=chrome-os-partner:24957
TEST=Compiled Falco and Nyan_Big both with and without the new option,
disassembled output binaries to ensure that memcpy() looks as expected.

Original-Change-Id: I6e3a75b1a8e46291c75a876844c7a01f7d3f2a0e
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/203513
Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
(cherry picked from commit d8e5a9fdf583b5ac861f34baea6a16c4d8536512)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I446fef028264c793b946dd9f765e446bf708b4db
Reviewed-on: http://review.coreboot.org/8118
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2015-01-09 07:06:27 +01:00
Furquan Shaikh 8c8c377584 libpayload: Add support for arm64 in libpayload
Basic support for arm64 is enabled in libpayload.
Features added:
1) mem* operations in assembly.
2) Basic exception handling and support for testing exceptions.
3) Caching support.

Tested with arm64-generic board compilation.

BUG=None
BRANCH=None
TEST=Compilation successful

Original-Change-Id: I4e86301f9c6383abc078e2b70071fb84bd6e4741
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/187067
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit a70d13f3d225535843ab352290eab2e1ec7a9b4b)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: Ie3affe6a2bdd4fed3058de739d4c6aa573e5b251
Reviewed-on: http://review.coreboot.org/8063
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
2015-01-09 07:04:28 +01:00
Vadim Bendebury 897123ab2f libpayload: ipq808x: introduce uart driver
This adds a UART driver for the ipq8064 controller. It still does not
quite work in the receive direction - the receive FIFO returns read
data in 32 bit chunks, which means that 4 keys need to be pressed
before a character pops out of the driver (and it reports it as a
single character).

This issue is being addressed separately, the driver is being checked
in to facilitate concurrent development.

BUG=chrome-os-partner:27784, chrome-os-partner:29313

TEST=with deptcharge modifications in place, the AP148 board comes up
     to the depthcharge prompt:

Starting depthcharge on storm...

Original-Change-Id: Ief2cfcca73494be5c4147881144470078adcefb8
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/202045
Original-Reviewed-by: Deepa Dinamani <deepad@codeaurora.org>
Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
(cherry picked from commit 4499318fb9a4e663c504d7c41380ccf2aa89da29)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I3e07d7568c20c0e570222971ff219de3a6d9b7cc
Reviewed-on: http://review.coreboot.org/8061
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-01-06 16:57:30 +01:00
Vadim Bendebury 8ec74a39fa libpayload: ipq8064: Add rudimentary timer driver
This is still using the 32kHz timer coreboot uses. A finer granularity
timer implementation for 806x is in the works.

BUG=chrome-os-partner:27784,chrome-os-partner:28880
TEST=none yet.

Original-Change-Id: Iae206749000d45040090df48199c8d86d76bbae5
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/198021
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit 8f49f752ab8f84b7c5dc189238732360e8d2aae2)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: Ia150c974e5b66939de0b007cf7c1308c187f3289
Reviewed-on: http://review.coreboot.org/8002
Tested-by: build bot (Jenkins)
Reviewed-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2015-01-04 00:07:38 +01:00
Marc Jones 019bacb41a libpayload: Remove PC Keyboard from ARM build
The keyboard.c uses IO cycles to access the legacy PC keyboard device.
ARM can't do IO cycles, so remove the option for ARM configs.

Change-Id: Ifc6c2368563f27867f4babad5afdde0e78f4cf78
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/7922
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-12-30 19:08:37 +01:00
Marcelo Povoa 558e9b55c8 libpayload: Add minimal support for PL011 UART
This creates a new PL011 config variable which avoids the
infinite busy wait on serial_putchar() because the register
mapping is not compatible with current implementation.

BUG=None
BRANCH=none
TEST=printf() works on the PL011 based ARMv8 foundation model

Original-Change-Id: I9feda35a50a3488fc504d1561444161e0889deda
Original-Signed-off-by: Marcelo Povoa <marcelogp@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/187020
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit 85779a34a161c324cc8af995ada4393137275f20)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Conflicts:
	payloads/libpayload/Config.in
	payloads/libpayload/drivers/serial.c

Change-Id: I23c8b3728cd7d2d7692b3e86a679e061e88f7bb5
Reviewed-on: http://review.coreboot.org/7422
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
2014-11-13 06:23:17 +01:00
Gabe Black d4d29a1a7e libpayload: timer: Move the timer drivers from depthcharge to libpayload.
These drivers are needed right away and never really fit into depthcharge's
driver model anyway.

CQ-DEPEND=CL:194064
BUG=None
TEST=Built and booted nyan, link, and peach_pit and verified that timer values
in cbmem were reasonable. Built for nyan_big, nyan_blaze and daisy.
BRANCH=None

Original-Change-Id: Ia7953cfece57524262a6c7d6537082af7a00f4d6
Original-Signed-off-by: Gabe Black <gabeblack@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/194058
Original-Reviewed-by: Gabe Black <gabeblack@chromium.org>
Original-Commit-Queue: Gabe Black <gabeblack@chromium.org>
Original-Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit f30a410f0a248c93bc34f5868af1596bf8ce3cdd)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I782d20f3cd63210a87c712643c7a53753f5ef301
Reviewed-on: http://review.coreboot.org/7225
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
2014-11-13 06:23:07 +01:00
Gabe Black a6aecc41ef libpayload: serial: Move the depthcharge serial drivers into libpayload.
These drivers need to be ready right away and never really fit into the
depthcharge driver model anyway.

CQ-DEPEND=CL:194063
BUG=None
TEST=Built and booted on nyan and peach_pit. Built for nyan_big, nyan_blaze,
and daisy.
BRANCH=None

Original-Change-Id: I9570dee53c57d42ef4cd956f66a878ce39a2dc20
Original-Signed-off-by: Gabe Black <gabeblack@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/194057
Original-Reviewed-by: Gabe Black <gabeblack@chromium.org>
Original-Commit-Queue: Gabe Black <gabeblack@chromium.org>
Original-Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 26e18f680c93fc990a3d1057c164f19859634a9f)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: Ia2233e2bd821d8de8d2d57a9423aeb74be7efd93
Reviewed-on: http://review.coreboot.org/7224
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
2014-11-09 13:39:11 +01:00
Gabe Black 51edd54738 ARM: Generalize armv7 as arm.
There are ARM systems which are essentially heterogeneous multicores where
some cores implement a different ARM architecture version than other cores. A
specific example is the tegra124 which boots on an ARMv4 coprocessor while
most code, including most of the firmware, runs on the main ARMv7 core. To
support SOCs like this, the plan is to generalize the ARM architecture so that
all versions are available, and an SOC/CPU can then select what architecture
variant should be used for each component of the firmware; bootblock,
romstage, and ramstage.

Old-Change-Id: I22e048c3bc72bd56371e14200942e436c1e312c2
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/171338
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 8423a41529da0ff67fb9873be1e2beb30b09ae2d)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>

ARM: Split out ARMv7 code and make it possible to have other arch versions.

We don't always want to use ARMv7 code when building for ARM, so we should
separate out the ARMv7 code so it can be excluded, and also make it possible
to include code for some other version of the architecture instead, all per
build component for cases where we need more than one architecture version
at a time.

The tegra124 bootblock will ultimately need to be ARMv4, but until we have
some ARMv4 code to switch over to we can leave it set to ARMv7.

Old-Change-Id: Ia982c91057fac9c252397b7c866224f103761cc7
Reviewed-on: https://chromium-review.googlesource.com/171400
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 799514e6060aa97acdcf081b5c48f965be134483)

Squashed two related patches for splitting ARM support into general
ARM support and ARMv7 specific pieces.

Change-Id: Ic6511507953a2223c87c55f90252c4a4e1dd6010
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6782
Tested-by: build bot (Jenkins)
2014-09-08 18:59:23 +02:00
Gabe Black 9135cb4542 libpayload: Change CONFIG_X86_SERIAL_CONSOLE to CONFIG_8250_SERIAL_CONSOLE
While the 8250 compatible serial port driver is primarily useful on x86
systems because it works with the legacy x86 com ports, some devices which
aren't x86 based have 8250 compatible UARTs as well. This change renames the
CONFIG_X86_SERIAL_CONSOLE option to the more general and direct
CONFIG_8250_SERIAL_CONSOLE and fixes up the dependencies so that non-x86
systems can enable the driver, although it will default to on on x86 and off
otherwise.

Also, the default IO port address that's added to the sysinfo structure on x86
and which is intended to be overwritten by a value in the coreboot tables is
not used on ARM. That variable is adjusted so that it's more clear it's a
default value, and made dependent on x86 since that's the only place its value
is actually used.

Change-Id: Ifeaade0e7bd76d382426e947275a9c933da4930e
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/170834
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 9a10e39a2da3cb0bfb316c0869cf5025078e287f)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6655
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-08-28 01:40:48 +02:00
Julius Werner d7c25b357f libpayload: usb: Allow direct instantiation of MMIO host controllers
The existing USB_MEMORY mechanism to instantiate non-PCI host
controllers is clunky and inflexible... most importantly, it doesn't
allow multiple host controllers of the same kind. This patch replaces it
with a function that allows payloads to directly instantiate as many
host controllers of whatever type they need.

Change-Id: Ic21d2016a4ef92c67fa420bdc0f0d8a6508b69e5
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/169454
Reviewed-by: Stefan Reinauer <reinauer@google.com>
(cherry picked from commit b6e95c39dd91f654f0a345f17b3196f56adf4891)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6644
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-08-28 00:09:32 +02:00
Stefan Reinauer b82a74c7ff libpayload: Drop PowerPC architecture
This was never completed / working and we have the working
ARMv7 port for an architecture template, so get rid of this
dead code.

Change-Id: Ic2c1267ee5546dd6e1b63220c263b2fa86c8ae33
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/56065
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-by: Ronald G. Minnich <rminnich@chromium.org>
Commit-Queue: Stefan Reinauer <reinauer@chromium.org>
Reviewed-on: http://review.coreboot.org/4235
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-11-26 00:08:39 +01:00
Stefan Reinauer 8992e53c23 libpayload: Add USB support for non-PCI controllers
Restructure USB stack to not depend on PCI, and
make PCI stub available on x86, but provide fixed
BARs for ARM (Exynos 5)

Change-Id: Iee7c8b134c22b661a9a515e24943470c9dbadd1f
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/49970
Reviewed-on: http://review.coreboot.org/4175
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-11-25 23:31:52 +01:00
Nico Huber 9029265cf5 libpayload: Fill gaps in the xHCI driver
Well, it turned out to be more as some gaps ;)
but we finally have xHCI running. It's well tested against a QM77 Ivy
Bridge board.

We have no SuperSpeed support (yet). On Ivy Bridge, SuperSpeed is not
advertised and USB 3 devices will just work at HighSpeed.

There are still some bit fields in xhci_private.h, so this might need
little more work to run on ARM.

Change-Id: I7a2cb3f226d24573659142565db38b13acdc218c
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/3452
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-06-13 22:21:20 +02:00
Nico Huber 5736fab4be libpayload: Port usb hub driver to use the generic code
This is mostly a rewrite, don't even try to read a diff.

Tested with an internal rate matching hub on a QM77 board and three hubs
integrated into DELL monitors.

Change-Id: Ib12fa2aa90af4e0f37143d2ed92c4a1705b6d774
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/3451
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-06-13 22:18:49 +02:00
Nico Huber 0b78de2ee9 libpayload: Add a generic driver for usb hubs
The current drivers for external usb hubs and root hubs all follow
the same pattern. Before adding another one with 90% of the same code,
extract the common parts and rewrite them with a simple interface.

This also adds debouncing of new attachments. Current drivers just
waited 100ms before they reset the device. However, we should check
if the device becomes disconnected and reconnected during this period.

Porting of the current hub drivers will take place in separate
commits (when I have time to test the older HCIs).

Change-Id: I0c0ce0ac1b1cc51fb4cd009b3f9fcd1b9d2ba8fe
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/3450
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-06-13 22:17:42 +02:00
Stefan Reinauer 04d352db41 libpayload: Fix Config.in warning
PDcurses is already default. Hence drop the additional attempt
that is not supported by Kconfig.

Config.in:123:warning: defaults for choice values not supported

Change-Id: I12cb5ea0bef2f146cf237c7a3cc9293a600d736b
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2902
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2013-03-25 23:06:34 +01:00
Gabe Black d267987083 libpayload: Make whether or not there's an IO address space configurable
Default it to no to be consistent with the other architecture wide options
(endianness), and turn it on explicitly for x86 and PowerPC.

Change-Id: Idda26d580156bbbf08ea11b28abe75cfa6b594b2
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/2658
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-03-13 23:02:05 +01:00
Ronald G. Minnich 7b6945405a libpayload: only compile drivers/serial.c on machines that use it.
Create a new serial console variable, X86_SERIAL_CONSOLE
which is only enabled when SERIAL_CONSOLE and ARCH_X86 are defined.

Builds for x86 and ARM.

Change-Id: I607253c418de015975a839e3c33577842885ec0c
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2412
Tested-by: build bot (Jenkins)
Reviewed-by: Gabe Black <gabeblack@chromium.org>
2013-02-16 04:48:51 +01:00
Stefan Reinauer 8af0d03fd4 libpayload: Initial ARMv7 port
This compiles, but it's not tested yet.

Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2035
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:29:48 +01:00
David Hendricks 4b6be985aa Change TARGET_I386 to ARCH_X86
This renames TARGET_I386 to ARCH_X86 to make it more uniform with
other parts of the codebase, e.g. cbfs_core.h from cbfstool.

Change-Id: I1babcc941245ed1dde0478a21828766759373a42
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/1961
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Dave Frodin <dave.frodin@se-eng.com>
2012-11-30 23:20:54 +01:00
Gabe Black 4bb0731a7b libpayload: Add an option to skip console initialization on startup.
A payload may want to decide whether it uses certain input/output consoles,
or that it wants support for outputing to a particular device but not to use
that device as a console. This change adds a config option which skips the
call to console_init in start_main.

Change-Id: I32b224d4d0bd3a239b402ecb09ee907d53225735
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1732
Tested-by: build bot (Jenkins)
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
2012-11-09 22:55:38 +01:00
Gabe Black a54b6a6143 libpayload: Add support for the CBMEM in memory console.
Change-Id: I1489b5306ef1ca078686fed4dba2d242f70ad941
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1727
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-09 19:01:15 +01:00
Gabe Black 0af03d24f8 Refactor the endianness conversion functions and header files.
The endianness of an architecture is now set up automatically using Kconfig
and some common code. The available conversion functions were also expanded
to go to or from a particular endianness. Those use the abbreviation le or be
for little or big endian.

Built for Stumpy and saw coreinfo cbfs support work which uses network
byte order. Used the functions which convert to little endian to implement an
AHCI driver. The source arch is also little endian, so they were effectively
(and successfully) inert.

Change-Id: I3a2d2403855b3e0e93fa34f45e8e542b3e5afeac
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1719
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-08 19:49:51 +01:00
Gabe Black d3890cc16d Update libpayloads understanding of the coreboot tables.
Give it somewhere to put the new info in sysinfo, and tell it how to parse
the new tables which it doesn't yet understand.

Change-Id: I01d3318138696e6407553c27c1814f79e3fbc4f8
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1718
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-08 19:49:46 +01:00
Nico Huber 1f6bd94fa8 libpayload: New AHCI, ATA and ATAPI drivers
This adds a new interface for storage devices. A driver for ATA and
ATAPI drives on AHCI host controllers comes along.

The interface is very simple and was designed to match FILO's needs.
It consists of three functions:

  void storage_initialize(void);
  Initializes controllers. Should be called once at startup.

  storage_poll_t storage_probe(size_t dev_num);
     with typedef enum {
            POLL_NO_DEVICE      = -2,
            POLL_ERROR          = -1,
            POLL_NO_MEDIUM      =  0,
            POLL_MEDIUM_PRESENT =  1,
          } storage_poll_t;
  Looks for a drive with number dev_num (drives are counted from
  zero) and polls for a medium in the drive if appropriate.

  int storage_read_blocks512(size_t dev_num,
                             u64 start, size_t count,
                             unsigned char *buf);
  Reads count blocks of 512 bytes from block start of drive dev_num
  into buf.

Change-Id: I1c85796b7f8e379ff3817a61b1837636b57e182b
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1622
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Peter Stuge <peter@stuge.se>
2012-10-27 02:52:58 +02:00
Patrick Georgi 6de1ee4a30 libpayload: Add liblzma, libcbfs
Add cbfs core from coreboot into libpayload, and to support lzma decode,
add coreboot's lzma code, too. Carl-Daniel agreed to relicense the
lzmadecode wrapper as BSD-l, solving licensing problems.

Change-Id: Id28990fe7e951d99447e265a4880d70a8f208dd2
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/115
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Marc Jones <marcj303@gmail.com>
2011-08-04 08:11:21 +02:00
Patrick Georgi 3b77b723ca libpayload: Add PDCurses and ncurses' libform/libmenu
PDCurses provides an alternative implementation of the curses library
standard in addition to tinycurses.
Where tinycurses is really tiny, PDCurses is more complete and provides
virtually unlimited windows and the full API.
The PDCurses code is brought in "vanilla", with all local changes
residing in curses/pdcurses-backend/

In addition to a curses library, this change also provides libpanel (as
part of the PDCurses code), and libform and libmenu which were derived
from ncurses-5.9.
As they rely on ncurses internals (and PDCurses is not ncurses), more
changes were required for these libraries to work.

The build system is extended to install the right set of header files
depending on the selected curses implementation.

Change-Id: I9e5b920f94b6510da01da2f656196a993170d1c5
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/106
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
2011-08-04 08:10:41 +02:00
Patrick Georgi 7f96583f0f Reduce warnings/errors in libpayload when using picky compiler options
The new build system uses quite a few more -W flags for the compiler by
default than the old one. And that's for the better.

Change-Id: Ia8e3d28fb35c56760c2bd0983046c7067e8c5dd6
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/72
Tested-by: build bot (Jenkins)
Reviewed-by: Uwe Hermann <uwe@hermann-uwe.de>
2011-06-30 20:41:23 +02:00
Patrick Georgi 7f43dc1060 Add an EHCI driver to libpayload's USB stack.
Interrupt transfer support is missing (ie. no keyboard),
bulk and control transfers work (ie. mass storage).

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Peter Stuge <peter@stuge.se>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5845 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-09-25 17:01:13 +00:00
Patrick Georgi 6615ef3bfc Add support for OHCI controllers and prelimiary support for xHCI (USB3) controllers.
Improve scanning for USB controllers.

Limitations:
- OHCI doesn't support interrupt transfers yet (ie. no keyboards)
- xHCI just does initialization and device attach/detach so far

Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Acked-by: Peter Stuge <peter@stuge.se>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5691 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-08-13 09:18:58 +00:00
Stefan Reinauer 14e2277962 Since some people disapprove of white space cleanups mixed in regular commits
while others dislike them being extra commits, let's clean them up once and
for all for the existing code. If it's ugly, let it only be ugly once :-)

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5507 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-04-27 06:56:47 +00:00
Stefan Reinauer e5d30b78b7 libpayload update
* rework Config.in
* add string_to_args function to actually make getopt usable.
* add strchr
* add strlcat
* some malloc fixes (exposed by the USB stack)
* add malloc debugging (thanks to Matthias Krause from Secunet!)
* make LAR support optional, it's not really used anymore
* (define htoX macros for ppc)

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Joseph Smith <joe@settoplinux.org>




git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5298 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-03-25 22:15:19 +00:00
Stefan Reinauer b700254aa5 Add coreboot framebuffer support to libpayload
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de> 



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5295 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-03-25 18:56:26 +00:00
Patrick Georgi d385ed29b9 This change adds PPC support to libpayload, and hooks it up in the build
process.
The PPC support is still stubbed, with commented out x86 code as guide
line for an implementor.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4293 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2009-05-21 10:02:52 +00:00
Jordan Crouse 20c9cf12a4 [PATCH] libpayload: Add multiboot support
Make libpayload applications multiboot compatible.  Add the
multiboot OS table and grok the loader table, especially the
memory map and the command line.  This makes libpayload 
applications loadable by GRUB.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Peter Stuge <peter@stuge.se>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3673 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2008-10-20 16:51:43 +00:00
Peter Stuge 4b1971cc62 libpayload: Rename Geode video driver to Geode LX video driver.
This is simply wrong, the "Geode" video driver is only good for LX and one of
our users got bit by this just now.

Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3642 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2008-10-08 14:47:41 +00:00
Stefan Reinauer d84ef1e6dc * add keyboard layout support to libpayload
* add a reset handler mechanism (CTRL-ALT-DEL)

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3605 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2008-09-26 18:37:26 +00:00
Patrick Georgi d21f68bbd5 This patch adds USB capabilities to libpayload. It requires some
memalign implementation (eg. the one I sent yesterday).
Features:
 - UHCI controller driver
 - UHCI root hub driver
 - USB MSC (Mass Storage Class) driver
 - skeleton of a USB HID driver
   (requires better interrupt transfer handling, which is TODO)
 - skeleton of a USB hub driver
   (needs several blank spots filled in, eg. power management.
    Again: TODO)

OHCI and EHCI are not supported, though OHCI support should be rather
easy as the stack provides reasonable abstractions (or so I hope). EHCI
will probably be more complicated.

Isochronous transfers (eg. webcams, audio stuff, ...) are not supported.
They can be, but I doubt we'll have a reason for that in the boot
environment.

The MSC driver was tested against a couple of USB flash drives, and
should be reasonably tolerant by now. But I probably underestimate
the amount of bugs present in USB flash drives, so feedback is welcome.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3560 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2008-09-02 16:06:22 +00:00