Commit Graph

10893 Commits

Author SHA1 Message Date
Julius Werner fa938c7508 exynos5: Refactor crazy old U-Boot base address macros away
All this samsung_get_base_address_of_device_with_a_really_long_name()
boilerplate makes my eyes bleed... I think there are so much cleaner
ways to do this. Unfortunately changing this ends up touching nearly
every Exynos5 file, but I hope you agree that it's worth it (and the
sooner we get it over with, the better... I can't bring myself to make
another device fit into that ugly scheme).

This also removes the redundant EXYNOS5 base address definitions from
the 5420 directory when there are EXYNOS5420 ones, to avoid complete
confusion. The new scheme tries to use EXYNOS5 for base addresses and
exynos5 for types that are common between the two processors, and
EXYNOS5420/exynos5420 for things that have changes (although I probably
didn't catch all differences).

Change-Id: I87e58434490ed55a9bbe743af1f9bf2520dec13f
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/167579
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: ron minnich <rminnich@chromium.org>
(cherry picked from commit 66c87693352c248eec029c1ce83fb295059e6b5b)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6632
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-08-14 01:43:11 +02:00
Stefan Reinauer 755615a123 exynos5420: Enable relocatable module support
Since we're now supporting ARMv7 relocations, we can enable
rmodule support on Exynos 5420. This does not automatically
enable relocatable ramstage.

Signed-off-by: Stefan Reinauer <reinauer@google.com>

Change-Id: Ic3af1eabb3b816944587a46409224f778d941b8a
Reviewed-on: https://chromium-review.googlesource.com/167403
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: Stefan Reinauer <reinauer@google.com>
Commit-Queue: Stefan Reinauer <reinauer@google.com>
(cherry picked from commit 7b5afef4ee87fc3245ec887dfda873c529d8d04d)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6629
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
2014-08-13 22:30:18 +02:00
Ronald G. Minnich 3eab7ed45e Tegra,Tegra124: proposed layout for file hierarchy with example
This change shows the source structure for nvidia Tegra and Tegra124
SOC.  The problem we are trying to solve is that there is a large
amount of common code in the form of .c and .h files across many
different Tegra SOCs. The solution is to provide common code in a
single directory, but not to compile in the common code directory;
rather, we compile in a directory for a given SOC. Different SOCs
will sometimes need different bits of code from the common directory.

Tegra common code lives in tegra/, but there is no makefile there: if
a Tegra common file is needed in a SOC, it is referenced via a
Makefile in a specific Tegra SOC.

Another issue is includes. Include files in the common directory  might be
accessed by a piece of code in an SOC directory. More problematically,
code in the common directory might require a file in an SOC directory.
We don't want to put the SOC name in an #include path, e.g.
in a C file in tegra/ is very undesirable, since we might be compiling
for a tegra114.

On some systems this is solved by a pre-pass which creates a set of
symbolic links; on others with nested #ifdef in the common code
which include different .h files depending on CPP variables.
In previous years, both LinuxBIOS and coreboot have tried these
solutions and found them inconvenient and error-prone.

We choose to solve it by requiring explicit naming of part of the path
of files that are in the common directory. This requirement, coupled
with two -I directives in the Makefile.inc, allows common and SOC
C code to incorporate both common and SOC .h files.

.c and .h files -- SOC or common -- name include
files in the common directory with the prefix tegra/, e.g.
SOC files will be included from the SOC directory if they have no prefix:
The full patch of clock.h will depend on what SOC is being compiled, which
is desirable.

In this way, a common file can pick up a specific SOC file without
creating symlinks or other such tricky magic.

We show this usage with one file, soc/nvidia/tega124/clock.c. This compiles.

The last question is where to put the prototype for the function
defined in this file -- soc.h?

Change-Id: Iecb635cec70f24a5b3e18caeda09d04a00d29409
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://chromium-review.googlesource.com/171569
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 53e3bed868953f3da588ec90661d316a6482e27e)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6621
Tested-by: build bot (Jenkins)
2014-08-13 19:36:22 +02:00
Furquan Shaikh 5f5b4fdce3 Falco: Patch to setup FUI (coreboot initializations) for falco
For now using the same gma.c and i915io.c files as for slippy

Change-Id: Ieb09d0152d525aa090eeb86ebfa253d450d22820
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/64373
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit 3e119c7e22cb82677754413e56a125f4a372ad54)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6603
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-08-13 19:33:23 +02:00
Furquan Shaikh c1c6dcf0f3 Falco: Patch to enable correct port clock selection for dp
This is required only for haswell since the register configs have changed.
Also, created mainboard specific header file

Original-Change-Id: I61bf8d7cef1f204735a2f72225c48d6e44a99945
Signed-off-by: Furquan Shaikh <furquan@google.com>

Conflicts:
	src/mainboard/google/slippy/gma.c
	src/mainboard/google/slippy/i915io.c

Conflicts:
	src/mainboard/google/slippy/gma.c
Change-Id: I77f2542ca8228358f59aafd99c0d13168ab47fb5
Reviewed-on: https://gerrit.chromium.org/gerrit/66853
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit 77f9d1ddd4376e2a290d466f0669a43997492c8e)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6602
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
2014-08-13 19:32:56 +02:00
Furquan Shaikh 77f48cdead Falco/Slippy: Patch to refactor haswell/gma.c and mainboard/google/slippy/i915io.c
A large portion of documented registers have been initialized using macros. Only a few
undocumented registers are left out. i915io.c looks lot more cleaner by removing redundant
calls. However, some more work is required to correctly identify which calls are not required.

All the io_writes are replaced by gtt_writes.

Change-Id: I077a235652c7d5eb90346cd6e15cc48b5161e969
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/66204
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit 39f3289f68b527575b0a120960ff67f78415815e)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6600
Tested-by: build bot (Jenkins)
2014-08-13 19:32:11 +02:00
Vladimir Serbinenko 61ffb4ca2e lenovo/x200: New mainboard.
Change-Id: I64e59648064d5875907b5057e2f9f72f2c5997b1
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6631
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-13 09:35:36 +02:00
Vladimir Serbinenko 883e7acc65 lenovo/h8: Support uwb radio.
It's the third minipcie slot in x200.

Change-Id: Ibfa8d787698cd23b4abcffe5cff2d62039cf0f86
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6641
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-08-13 09:35:23 +02:00
Vladimir Serbinenko 020dc0e13c gm45: Allow skiping voltage config.
Change-Id: I81b9966212d09d4d2561b3adc20d6d8a8a200f4b
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6630
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-13 09:35:07 +02:00
Stefan Reinauer 951fc26a08 ARMv7: drop dead code from Makefile.inc
This commented out code is a left over from x86.

Change-Id: Ice806000c73d5a068962914d067d4de7b3d75f45
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: https://chromium-review.googlesource.com/168961
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Reviewed-by: David Hendrix <dhendrix@chromium.org>
(cherry picked from commit 9d700cf35d2283a088e704c0ebd34e6f58f54993)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6639
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-08-13 08:05:48 +02:00
Edward O'Callaghan ef3a17bd88 util/inteltool: Typo in dump output for 'GP_IO_SEL3'
The GPIO offset of '0x44 - GP_IO_SEL3' as specified in the pch.h header
is incorrectly reported as 'GPIO_SEL3'.

Change-Id: I56dcdda109d5f57ed45938d60b995807bdfb46b1
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/6459
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-08-13 05:01:58 +02:00
Edward O'Callaghan 691ff08e27 southbridge/amd/cimx/sb800: Uninitialized variables in config func
Both 'SbSpiSpeedSupport' and 'UsbRxMode' are uninitiated upon return from
a 'sb800_cimx_config()' call.

Change-Id: I32237ff97fafc3e69627d427e54268dcb039e12c
Found-by: Coverity Scan
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/6474
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-08-13 04:50:00 +02:00
Stefan Reinauer aaaf689007 chromeos: On ARM platforms VBNV lives in the EC
This patch renames the x86 way of doing things to
explicitly mention CMOS (which is not available on
our ARM platforms) and adds an implementation to
get VBNV through the Chrome EC. We might want to
refine this further in the future to allow VBNV
in the EC even on x86 platforms. Will be fixed when
that appears. Also, not all ARM platforms running
ChromeOS might use the Google EC in the future, in
which case this code will need additional work.

Signed-off-by: Stefan Reinauer <reinauer@google.com>

Change-Id: Ice09d0e277dbb131f9ad763e762e8877007db901
Reviewed-on: https://chromium-review.googlesource.com/167540
Reviewed-by: David Hendrix <dhendrix@chromium.org>
Tested-by: Stefan Reinauer <reinauer@google.com>
Commit-Queue: Stefan Reinauer <reinauer@google.com>
(cherry picked from commit 8df6cdbcacb082af88c069ef8b542b44ff21d97a)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6616
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
2014-08-13 00:15:36 +02:00
Julius Werner b8fad3d029 arm: libpayload: Add cache coherent DMA memory definition and management
This patch adds a mechanism to set aside a region of cache-coherent
(i.e. usually uncached) virtual memory, which can be used to communicate
with DMA devices without automatic cache snooping (common on ARM)
without the need of explicit flush/invalidation instructions in the
driver code.

This works by setting aside said region in the (board-specific) page
table setup, as exemplary done in this patch for the Snow and Pit
boards. It uses a new mechanism for adding board-specific Coreboot table
entries to describe this region in an entry with the LB_DMA tag.

Libpayload's memory allocator is enhanced to be able to operate on
distinct types/regions of memory. It provides dma_malloc() and
dma_memalign() functions for use in drivers, which by default just
operate on the same heap as their traditional counterparts. However, if
the Coreboot table parsing code finds a CB_DMA section, further requests
through the dma_xxx() functions will return memory from the region
described therein instead.

Change-Id: Ia9c249249e936bbc3eb76e7b4822af2230ffb186
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/167155
(cherry picked from commit d142ccdcd902a9d6ab4d495fbe6cbe85c61a5f01)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6622
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-08-13 00:04:14 +02:00
Julius Werner 4498f6a6e5 libpayload: usbhub: Don't clear PSC unless it was set
The current USB hub code always clears the port status change after
checking it, regardless of whether it was set in the first place. Since
this check runs on every poll, it might create a race condition where
the port status changes right between the GET_PORT_STATUS and the
CLEAR_FEATURE(C_PORT_CONNECT), thus clearing the statrus change flag
before it was ever read. Let's add one extra if() to avoid that possible
headache.

Change-Id: Idd46c2199dc6c240bd9ef068fbe70cccc88bac42
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/168098
(cherry picked from commit f7f6f008f701ab3e4a4f785032d8024d676e11cb)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6617
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-12 23:19:42 +02:00
Gabe Black eb623ab204 tegra124: Implement the monotonic timer by reading the 1us timer register.
It turns out there's a register in tegra which automatically counts at 1us
increments. It's primarily intended for hardware to use (I think to drive
other timers) but we can read it ourselves since a 1us timer is exactly what
we need to support the monotonic timer API.

Change-Id: I68e947944acec7b460e61f42dbb325643a9739e8
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/172044
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 161a39c53404ea0125221bbd54e54996967d6855)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6620
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
2014-08-12 23:18:52 +02:00
Gabe Black 59ebc6e919 tegra124: Add stack related config options to the Kconfig.
Otherwise the stack ends up down at 0 and has 0 bytes.

Change-Id: I0e3c80a0c5b0180d95819ab44829c2a0b527a54d
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/171015
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 3e69a477474697bcbc40762ec166e8a515d8b0c2)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6619
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-08-12 23:18:33 +02:00
Gabe Black 7980b08405 tegra124: Add some make rules which will wrap the bootblock in the BCT.
These rules slip into the normal bootblock preperation process and use the
cbootimage utility to wrap it in a BCT.

Change-Id: I8cf2a3fb6e9f1d792d536c533d4813acfb550cea
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/170924
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 cf4a9b0712c21b885bb59310671fb87e38abb665)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6618
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-08-12 23:18:16 +02:00
Vladimir Serbinenko 06667a5247 gm45: Move S3 detection to enable stage.
Also move it to NB to be in line with other.

Change-Id: Ibd961d60dcd686899f34f6a494c14ff9d65e618b
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6625
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-12 22:43:53 +02:00
Vladimir Serbinenko b1f34ab8d5 i82801ix: Make RP04 optionally hotpluggable.
Change-Id: I34a1ae4bff22db6ee55fa511de39bdfd5dd92c7e
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6627
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-12 22:37:35 +02:00
Vladimir Serbinenko 9907be4bbd gm45: Reserve RAM for ME if it's active.
Change-Id: Icd2b075cec9461f9d6028a8c845f6900b6fe04c8
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6628
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-12 22:29:43 +02:00
Vladimir Serbinenko b25a9e9d30 gm45: Allow coexistance with ME firmware.
Change-Id: I08ca5eec94c70b43789122266d68af149772385c
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6626
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-12 22:28:53 +02:00
ChromeOS Developer 32193e1f20 Haswell: Lower TJ_MAX to 100C. Adjust critical temps to match.
Change-Id: I3326b6e3c412b6360af37030cefd13d95b704e70
Signed-off-by: Dave Parker <dparker@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/180750
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 1978b0f91b2e91d2251721c7c6981d51a6930b61)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6615
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-12 22:22:52 +02:00
David Hendricks 5a0fdb4565 exynos5420: minor clean-up memory related stuff
This cleans up a few minor things (mostly #defines) of the memory code
for exynos5420, pit, and kirby. Specifically:

- CONCONTROL.empty is read-only, so don't try to set it and also
  get rid of the unneeded DMC_CONCONTROL_EMPTY_ENABLE #define.
- MEMBASECONFIG* overlaps members of the mem_timings struct and
  are mainboard-dependent anyway, so get rid of 'em.
- DMC_MEMCONTROL_TP_DISABLE corresponds to a reserved bit. It may
  have been deprecated.
- Same with TIMING* #defines.
- Clarify DDR_MODE_* usage and use mem->mem_type when appropriate.

Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: Ideb21efcc97b24f7e115e90051c20daef4480f17
Reviewed-on: https://chromium-review.googlesource.com/167500
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: ron minnich <rminnich@chromium.org>
(cherry picked from commit 650dba32cb217414c422907398f68e784e5720e8)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6614
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
2014-08-12 22:20:23 +02:00
David Hendricks 122b6d6ce6 exynos5420/pit: re-factor membaseconfig0/1 usage
membaseconfig0/1 are utterly dependent on the mainboard's particular
DRAM setup. This defines their values in the mem_timings struct for
pit.

Signed-off-by: David Hendricks <dhendrix@chromium.org>

Old-Change-Id: Ifd782d1229b2418f8ddbf0bcb3f45cc828ac34b0
Reviewed-on: https://chromium-review.googlesource.com/167488
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: ron minnich <rminnich@chromium.org>
(cherry picked from commit 80eebd5bc0dbb9fabf81f46c25dcd5c5d5747579)

exynos5420: necessary updates for DRAM

This updates DRAM usage for Exynos5420 so that we can actually
use 3.5GB:

- Memory chips used with Exynos5420 may have 16 row address lines.

Signed-off-by: David Hendricks <dhendrix@chromium.org>

Old-Change-Id: I86d1a96d0d1a028587f7655f8de5a2e52165e9d2
Reviewed-on: https://chromium-review.googlesource.com/167489
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: ron minnich <rminnich@chromium.org>
(cherry picked from commit 04bbaf5d8e125166dd689f656d5b37776be01fb1)

Squashed two related commits.

Change-Id: I4e45bc8a446715897ec21b0160701152fa6b226b
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6613
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-08-12 22:19:27 +02:00
David Hendricks 72a4288650 exynos5420: ddr3: Switch from 4G setup to 2G setup on exynos5420
This changes the number of chip selects that we configure from 2 to 1.
On current setups with (x16 memory 4Gbit chips) that means that we're
at 2GByte.

Technically we should add a second setting in the ares_ddr3_timings
and select between the two of the based on board strappings.  That
would make the CONFIG_RUN_TIME_BANK_NUMBER work properly.  I've
changed the ddr3_mem_ctrl_init() so it should handle that, but I'm not
actually doing the board strapping read right now.

This change means that accesses to 0xA0000000 - 0xFFFFFFFF on 2G
systems will no longer put the system in a messed up state (leading to
a hang).  It also prevents some of the weird boot behavior that we've
seen that comes and goes depending on U-Boot alignment.  See
<http://crosbug.com/p/20577>.

This patch was ported from: https://gerrit.chromium.org/gerrit/66117
Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: Ib4cfe420aac30bd817438f06d01e8671afc4a27d
Reviewed-on: https://chromium-review.googlesource.com/167210
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: ron minnich <rminnich@chromium.org>
(cherry picked from commit 0ea574243058068702e3f6bc7355098745d16880)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6612
Tested-by: build bot (Jenkins)
2014-08-12 22:18:53 +02:00
Patrick Georgi dd1aab95a6 nvramtool: plug some memory leaks
Change-Id: I8f672b872862d3448ccd2cf28fd3c05b0108ff8b
Found-by: Coverity Scan
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6561
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-08-12 22:15:20 +02:00
David Hendricks 42b1b8069c Exynos5420: ddr3: fine tuning the DDR3 timing values
Fine tuning DDR timings value for better stability

* Changed Data Driver Strength from 34 ohms to 30 ohms, expected to
  enhance signal integrity.
* Changed DQ signal from 0xf to 0x1f000f, to keep default value safe.
* Changed mrs[2] and added new mrs direct command for setting WL/RL
  without resetting DLL.
* Added explicit reset value write in phy_con0 instead of just setting
  a bit, to ensure that reset happens.
* Added DREX automatic control for ctrl_pd in none read memory state.

This is ported from: https://gerrit.chromium.org/gerrit/61405
Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: I59e96e6dede7b49c6572548aca664d82ad110bb1
Reviewed-on: https://chromium-review.googlesource.com/66995
Reviewed-by: ron minnich <rminnich@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit ec34b711c6d270672c56d45c370ca14c0aa27ca3)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6611
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-08-12 22:07:26 +02:00
Julius Werner 4610f0e64f libpayload: ehci: Set explicit terminate bits in dummy_qh next pointers.
The EHCI host controllers in Samsung Exynos SoC seem to be a little more
picky than Intel ones. When they reach the dummy_qh in the periodic
frame list, they try to access the next qTD pointer even though it's
NULL, and run into a HostSystemError. This patch explicitly sets the
Terminate bit on those pointers to mark them invalid.

Change-Id: I50fa79bbf1c5fab306d7885c01efd66b13e279b8
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/66884
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
(cherry picked from commit c575a5c958ce88732d28044352c89418bcd5ea86)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6608
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-12 22:06:55 +02:00
David Hendricks 3ffdafdfa4 Exynos5420: Remove code for enabling read leveling
This patch intends to remove all code which enables hardware read
leveling. We need to disable h/w read leveling because new ASV table
is merged in kernel (which is based on the new characterization
condition) and new characterization environment has h/w read leveling
disabled, so we should also disable this. Also, disabling h/w read
leveling improves the MIF LVcc value (LVcc value is the value at which
DDR will fail to work properly), improve LVcc means we have enough
voltage margin for MIF. When h/w leveling is enabled, we have almost
zero volatge margin.

This was ported from: https://gerrit.chromium.org/gerrit/66070
Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: Id0a2d77e6214325f226d51ae08464b39424cea83
Reviewed-on: https://chromium-review.googlesource.com/66994
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit d29add98f52876aaed4fee2b76edf6b4591e66e8)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6610
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-08-12 22:06:10 +02:00
Julius Werner 79bff70ac8 exynos5: Refactor board-specific parts out of USB PHY code
This patch moves around some of the existing Exynos5 USB 2.0 PHY code
to make it cleaner in preparation of the 3.0 PHYs. It moves the VBUS
GPIOs (which are completely board-specific) into the mainboard code and
makes sure to only initialize PHYs on the boards that actually need
them. It also removes the USB 3.0 PLL hack that was needed on Snow from
the Pit and Kirby boards (which do not have that PLL anymore).

Change-Id: Ia35f47a765acff60481f0907f7448ec4f78e0937
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/66887
Reviewed-by: Stefan Reinauer <reinauer@google.com>
(cherry picked from commit c3b1a8b687b535f4d5ac1b3bd2a4760151698fdb)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6609
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-08-12 22:05:17 +02:00
Julius Werner e9738dbe2b libpayload: Make USB transfer functions return amount of bytes
The USB bulk and control transfer functions in libpayload currently
always return 0 for success and 1 for all errors. This is sufficient for
current use cases (essentially just mass storage), but other classes
(like certain Ethernet adapters) need to be able to tell if a transfer
reached the intended amount of bytes, or if it fell short.

This patch slightly changes that USB API to return -1 on errors, and the
amount of transferred bytes on successes. All drivers in the current
libpayload mainline are modified to conform to the new error detection
model. Any third party users of this API will need to adapt their
if (...<controller>->bulk/control(...)) checks to
if (...<controller>->bulk/control(...) < 0) as well.

The host controller drivers for OHCI and EHCI correctly implement the
new behavior. UHCI and the XHCI stub just comply with the new API by
returning 0 or -1, but do not actually count the returned bytes.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/48308
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>

Updated the patch to support XHCI as well.

Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6
(cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6390
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-12 22:03:28 +02:00
David Hendricks 0f0c720621 exynos5420: ddr3: Cleanup init to use constants for directcmd
The old ddr3_mem_ctrl_init() for exynos5420 had hardcoded constants
for accessing directcmd registers.  Modify to use #defines where
possible.

This is ported from: https://gerrit.chromium.org/gerrit/#/c/65616
Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: I01567fc6941608a570832de97259c55e84942d01
Reviewed-on: https://gerrit.chromium.org/gerrit/66789
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Ronald G. Minnich <rminnich@chromium.org>
(cherry picked from commit d751e019f450172f060ce255ae53e972bc4a19ea)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6605
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-12 22:02:56 +02:00
David Hendricks 2f3daddd28 exynos5420: Alter init sequence as per recommendation
As per hardware recommendation, CKE PAD retention release must
happen just before gate leveling enable and only in case of resume.
Hence, this patch moves pad retention release from dmc_common.c to
dmc_init_ddr3_exynos5420.c. In addition to this we are providing
125 (+3 extra being safe) times auto refresh to DRAM by sending
REFA direct command. This is required because when CKE PAD retention
release happens, self refresh mode of DDR3 is disabled.
Hence, auto refresh 125 times.

This is ported from https://gerrit.chromium.org/gerrit/#/c/65573

Note: Since WAKEUP_DIRECT does not go thru memory init, it should be
safe to move CKE PAD retention out of bootblock.c.

Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: Idec5d6fbbe3c6344d47401ba7203079c52a9b866
Reviewed-on: https://gerrit.chromium.org/gerrit/66788
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Ronald G. Minnich <rminnich@chromium.org>
(cherry picked from commit 96cbcb09245d4df92d3e1998704ab440be42df25)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6604
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-12 22:01:48 +02:00
Julius Werner ad4556f2cb exynos5420: Make USB A-A booting work with early data cache
Apparently the IROM doesn't like data caches... the recently added
dcache-in-bootblock makes A-A booting fail, and flushes/invalidations
alone don't seem to fix it. It's pretty fast anyway, so we just disable
the cache again for the duration of the IROM call.

Also removes a superfluous invalidation line from the bootblock code...
dcache_mmu_enable/disable already take care of that.

Old-Change-Id: I35580d15664c7b4197d4ed14028720147adbf918
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/66602
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit e9c28a6a7a88c8286e62764ee5ad2694da2e822f)

exynos5: Implement booting from SDMMC media

This patch augments the alternative CBFS media source implementation for
Exynos5250 and Exynos5420 to allow booting from SDMMC devices (such as
an SD or uSD card reader, if available). It also moves MMC
initialization for the Snow, Pit and Kirby boards from romstage to
ramstage (mainboard_init) to prevent it from interfering with the IROM
during SDMMC boot.

Old-Change-Id: Ic4adef80c28262d084a53c28ec59aa7ac3af50c8
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/66154
(cherry picked from commit 08de13b72432c076e3327c048df93d89d52b0ecc)

snow and pit: turn on FET4 (for SD card) at bootup

Explictly enable FET4 on Snow and Pit.

Historically we haven't needed to do this because:
* On snow there's a bypass around FET4 which effectively eliminates
  it.  Even if we don't turn on FET4 the SD card is still powered.
  Turning on FET4 doesn't hurt though and is technically correct.
* On pit the EC turns on FET4 on cold bootup.

On pit we run into a problem if the kernel turns off FET4 like in
<https://gerrit.chromium.org/gerrit/#/c/65332/> and then we get a
software reset or warm reset.  In this case the EC won't know to turn
it back on.

This was ported from: https://gerrit.chromium.org/gerrit/#/c/65673

Signed-off-by: David Hendricks <dhendrix@chromium.org>

Old-Change-Id: I57337f12b38889e6afee8577cf8807ec4c41e91c
Reviewed-on: https://gerrit.chromium.org/gerrit/66786
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Ronald G. Minnich <rminnich@chromium.org>
(cherry picked from commit e910117047d898b6b1d0dc965ef2ec0237d17646)

Squashed three commits for alternate cbfs SD support.

Change-Id: Idbd1fd4776cbf8cb20d03e6b691104cd8540a1ec
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6530
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-08-12 22:01:13 +02:00
Patrick Georgi 32eeff4b6e util: replace fseek/ftell/rewind with fstat
It's a more direct approach to get the file size.

Change-Id: If49df26bf4996bd556c675f3a673d0003b4adf89
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6594
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-08-12 11:53:24 +02:00
Patrick Georgi 77b182a31a board-status: be protocol agnostic on upload
Generate the board-status repo URL by replacing the
last occurrence of "/coreboot" by "/board-status",
which works across repo URL schemes (gerrit provides
several).

Change-Id: Iccb53bde994be619c1436815e13741d63738edf7
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6574
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-12 11:52:49 +02:00
Daniele Forsi 8f15f4715a Kconfig: do not set SB_HT_CHAIN_ON_BUS0 twice to the same value
Change-Id: If7286abf91f758cfbac2c85dcad336f38f70d843
Signed-off-by: Daniele Forsi <dforsi@gmail.com>
Reviewed-on: http://review.coreboot.org/6579
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
2014-08-12 09:02:45 +02:00
Daniele Forsi ea70a5068f util/genprof: improve handling of command line arguments
Accept only one command line argument (the input file name); close input
stream both on error and on success; print more informative error messages
when files could not be opened.

Change-Id: Ib2f0622a332317d7a13f33f1e5787381804c43a9
Found-by: missing fclose()'s found by Cppcheck 1.65
Signed-off-by: Daniele Forsi <dforsi@gmail.com>
Reviewed-on: http://review.coreboot.org/6573
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-12 09:02:44 +02:00
Daniele Forsi 21fbc08d4b armv7/Makefile.inc, cpu/Makefile.inc: align output of printf
Fix whitespace.

Change-Id: I9e28b819d685851a84cee6c5a71458e07d0ec808
Signed-off-by: Daniele Forsi <dforsi@gmail.com>
Reviewed-on: http://review.coreboot.org/6577
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-12 09:02:43 +02:00
Martin Roth b40c345947 mainboard/intel/minnowmax: clean up includes & whitespace
Clean up as requested in commit e6df041b.
No functional changes.

Change-Id: Iec3f7ee25fd8351c7e13d660e2df6461f7745478
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/6597
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-08-12 03:35:59 +02:00
Martin Roth 9944b28cc4 cpu/intel/XXX/acpi.c: Fix coding style violation
Clean up a coding style violation as requested in the review of
commit 09670265.

Change-Id: I2815635efbb70a1e5841ca79cf2b4845bc6c23f2
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/6598
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-08-12 03:35:10 +02:00
Vladimir Serbinenko 6481e1052f gm45: Ensure that brightness register in gma contains sane value.
Change-Id: Ia66c71c3adf2ae0d413750b5e59e3eaba3888a0b
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6587
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-12 00:29:53 +02:00
Martin Roth 8845759a02 vendorcode/intel/fsp/baytrail/absf: add Minnow Max absf files
The absf files contain the modifications to the default settings in
the FSP.  They are used as input files for Intel's 'Binary Configuration
Tool' (BCT) along with the FSP.bin file to generate customized FSP
binaries.

The Minnow Max absf files set up the values for the soldered down
memory.  This requirement will go away with the release of the next
Bay Trail FSP, and the memory settings will be configurable at
runtime.

Change-Id: Id72545d78a7e82d9a5090710a9c7a8a9b1e81208
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/6432
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2014-08-11 20:52:12 +02:00
Martin Roth 3ab015cddd bayleybay_fsp: Add bakersport board variant
The Bakersport board is a variant of the Bayley Bay mainboard that uses
one ECC DIMM instead of two non-ECC dimms.

This commit uses the Bayley Bay mainboard directory and modifies the
required pieces to add the Bakersport board variant.  It disables the
second DIMM, points to an ECC version of the FSP, and sets the board
name to be Bakersport instead of Bayley Bay.

All of the code is still contained in the bayleybay_fsp directory.  It
seems like duplicating the whole directory for the one line of code
that's actually different between the two platforms.

Change-Id: Ia31e9ee927a6810a01a1ae143fcb00cfb7d8a7aa
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/5983
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2014-08-11 20:06:44 +02:00
Patrick Georgi 40c845d352 lint: provide better GPL license text test
Still not lint-stable due to too many open issues, but
at least it doesn't try to touch files that aren't part
of the repository anymore.

Change-Id: I654b15480094c7731a7d0d17fa1622a0b41ac34a
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6584
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-11 19:13:25 +02:00
Patrick Georgi 4b65c2ad33 lint: improve whitespace test
The whitespace test only trips on files that are part
of the git index - in particular not temporary editor
files or other cruft that doesn't hurt anyone.

Change-Id: I793fcc773845ee02281d8614b07e9c5958126a5a
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6582
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-11 19:12:22 +02:00
Vladimir Serbinenko f3155d205e gm45: Declare brightness variables for ACPI use.
Change-Id: I23a088919aaac16066e5dd8300a081a8095a93f0
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6589
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-11 19:10:29 +02:00
Martin Roth e6df041b8b mainboard/intel/minnowmax: Add MinnowMax mainboard
MinnowMax board using Intel's Bay Trail FSP

Working:
- Booting from SATA / USB / (USB3 with latest SeaBIOS)

Not working:
- Boot from SD
- S3 Suspend / Resume

***** To configure the FSP *****
Download the Bay Trail FSP and the binary config tool:

Modify the standard Bay Trail FSP:
run the bct tool with the command line options:
bct --bin <Bay Trail FSP Binary> \
	--absf src/vendorcode/intel/fsp/baytrail/absf/minnowmax_Xgb.absf \
	--bout <path to save the updated FSP to>

Here are the required changes for modifying the FSP manually:
	Enable Memory Down: Enabled
	DRAM Speed: 1066 MHz
	DIMM_DWidth: x16
	DIMM_Density: 4 Gbit (2GB Minnow Max) / 2 Gbit (1GB Minnow Max)
	tCL: 7
	tRP_tRCD: 7
	tWR: 8
	tRRD: 6
	tRTP: 4
	tFAW: 27
Other FSP values can remain the same.

***** To configure the vbios *****
The vbios is in the Bay Trail FSP package.
Download Intel's "Binary Modification Program" (BMP)
Use it to disable all ports except HDMI on port B.

Change-Id: I00d90e0d838d70c9d25c69f5115d0c9d6d19855c
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/6429
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-11 19:01:25 +02:00
Julius Werner 83da50173c libpayload: xhci: Use Event Data TRBs for transfer event generation
The current XHCI code only sets IOC on the last TRB of a TD, and
doesn't set ISP anywhere. On my Synopsys DesignWare3 controller, this
won't generate an event at all when we have a short transfer that is not
on the last TRB of a TD, resulting in event ring desync and everyone
having a bad time. However, just setting ISP on other TRBs doesn't
really make for a nice solution: we then need to do ugly special casing
to fish out the spurious second transfer event you get for short
packets, and we still need a way to figure out how many bytes were
transferred. Since the Short Packet transfer event only reports
untransferred bytes for the current TRB, we would have to manually walk
the rest of the unprocessed TRB chain and add up the bytes. Check out
U-Boot and the Linux kernel to see how complicated this looks in
practice.

Now what if we had a way to just tell the HC "I want an event at exactly
*this* point in the TD, I want it to have the right completion code for
the whole TD, and to contain the exact number of bytes written"? Enter
the Event Data TRB: this little gizmo really does pretty much exactly
what any sane XHCI driver would want, and I have no idea why it isn't
used more often. It solves both the short packet event generation and
counting the transferred bytes without requiring any special magic in
software.

Change-Id: Idab412d61edf30655ec69c80066bfffd80290403
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170980
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
(cherry picked from commit e512c8bcaa5b8e05cae3b9d04cd4947298de999d)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6516
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-08-11 18:26:00 +02:00