The pattrs structure is intended for the supporting coreboot
code to reference instead of going back to the source of
the values (msrs, cpuid, etc). It essentially serves as a global
structure for collecting attributes about the platform/processor.
Additionally, the implementation provides a point during boot to
hoook work before device enumeration/initialization by providing
a init() function to soc_intel_baytrail_ops that is called before
device work in the boot state machine.
BUG=chrome-os-partner:22862
BUG=chrome-os-partner:22863
BRANCH=None
TEST=Built and booted. Noted pattrs output.
Change-Id: I073da8aca29635146fb0d4a2625b2b7564fd8414
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170403
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: http://review.coreboot.org/4854
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The dunit on baytrail is the dram unit. Provide a means
to access the configuration registers there using the
proper IOSF mechanisms.
BUG=chrome-os-partner:22875
BRANCH=none
TEST=Built and booted. Able to read dram registers.
Change-Id: I4d5c019720a7883fe93f3e1860bcd57ce2ea6542
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170490
Reviewed-on: http://review.coreboot.org/4853
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Prior to this commit the coreboot resource allocator
was not using proper addresses. That's not surprising there
wasn't any code to initialize the resources properly. This
commit initializes the memory map accoring to the BUNIT
registers.
BUG=chrome-os-partner:22860
BUG=chrome-os-partner:22862
BRANCH=None
TEST=Built and booted. Noted output for resource assignments
is sane.
Change-Id: Ice8d067d8b993736de5c5b273a0f642fa034a024
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170429
Reviewed-on: http://review.coreboot.org/4852
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The coreboot device modeling for pci devices wants
a pci_operations structure for all devices. This structure
just sets the subsystem vendor and device id. Add a common
one that all the other pci drivers can use for Bay Trail.
BUG=chrome-os-partner:22860
BRANCH=None
TEST=Built and booted while utilizing this new structure.
Change-Id: I39949cbdb83b3acb93fe4034eb4278d45369e321
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170428
Reviewed-on: http://review.coreboot.org/4851
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The graphics device needs to have its resource contraints
initialized before running the reference code. Right now just
use a 256MiB aperture, 32MiB of stolen memory data, and 2MiB
GTT memory.
BUG=chrome-os-partner:22869
BRANCH=None
TEST=Built and booted. Noted amount of stolen memory matches
configuration as well as BAR size within the graphics
device.
Change-Id: I328bf858f288363187cf705d6340947393b5ff10
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170427
Reviewed-on: http://review.coreboot.org/4850
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Take advantage of the cache early in bootblock. The
intent is to speed up cbfs walking when trying to locate
romstage.
BUG=chrome-os-partner:22857
BRANCH=None
TEST=Built and booted.
Change-Id: If03210103c9782390230915db3b4a9759d172dce
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170426
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/4849
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The initial Bay Trail code is intended to support
the mobile and desktop version of Bay Trail. This support
can train memory and execute through ramstage. However,
the resource allocation is not curently handled correctly.
The MRC cache parameters are successfully saved and reused
after the initial cold boot.
BUG=chrome-os-partner:22292
BRANCH=None
TEST=Built and booted on a reference board through ramstage.
Change-Id: I238ede326802aad272c6cca39d7ad4f161d813f5
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/168387
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/4847
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
In the past the turbo disable setting (bit 38) of the
IA32_MISC_ENABLES msr has been package scoped. That means
knocking the turbo disable bit down enabled turbo for the
entire package. Sadly, that's no longer true on all Intel
processors. Therefore, allow non-packaged scoped turbo
setting by introducing the CPU_INTEL_TURBO_NOT_PACKAGE_SCOPED
Kconfig option. It defaults to false which was the original
assumption.
BUG=chrome-os-partner:25014
BRANCH=baytrail
TEST=Built and ran both ways successfully.
Change-Id: I71a31e76ff47878023081fc47da643187517b597
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/182405
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/5047
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
In order for the cpu code to start SMM relocation 2 new
functions are added to be shared:
- void smm_initiate_relocation_parallel()
- void smm_initiate_relocation()
The both initiate an SMI on the currently running cpu.
The 2 variants allow for parallel relocation or serialized
relocation.
BUG=chrome-os-partner:22862
BRANCH=None
TEST=Built and booted rambi using these functions.
Change-Id: I325777bac27e9a0efc3f54f7223c38310604c5a2
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/173982
Reviewed-on: http://review.coreboot.org/4891
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
The Bay Trail SMM save state revision is 0x0100.
Add support for this save state area using the
type named em64t100_smm_state_save_area_t.
BUG=chrome-os-partner:22862
BRANCH=None
TEST=Built and booted using this structure with forthcoming CLs.
Change-Id: Iddd9498ab9fffcd865dae062526bda2ffcdccbce
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/173981
Reviewed-on: http://review.coreboot.org/4890
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Provide a common entry point for bringing up the APs
in parallel. This work is based off of the Haswell one
which can be moved over to this in the future. The APs
are brought up and have the BSP's MTRRs duplicated in
their own MTRRs. Additionally, Microcode is loaded before
enabling caching. However, the current microcode loading
support assumes Intel's mechanism.
The infrastructure provides a notion of a flight plan
for the BSP and APs. This allows for flexibility in the
order of operations for a given architecture/chip without
providing any specific policy. Therefore, the chipset
caller can provide the order that is required.
BUG=chrome-os-partner:22862
BRANCH=None
TEST=Built and booted on rambi with baytrail specific patches.
Change-Id: I0539047a1b24c13ef278695737cdba3b9344c820
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/173703
Reviewed-on: http://review.coreboot.org/4888
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Haswell was the original chipset to store the cache
in another area besides CBMEM. However, it was specific
to the implementation. Instead, provide a generic way
to obtain the location of the ramstage cache. This option
is selected using the CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM
Kconfig option.
BUG=chrome-os-partner:23249
BRANCH=None
TEST=Built and booted with baytrail support. Also built for
falco successfully.
Change-Id: I70d0940f7a8f73640c92a75fd22588c2c234241b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/172602
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/4876
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
In order to incorporate external blobs into
CBFS besides MRC have a notion of a reference code
blob. By selecting HAVE_REFCODE_BLOB and providing
the file name the refcode blob will be added to
cbfs as a stage file.
BUG=chrome-os-partner:22866
BRANCH=None
TEST=Using this option and other patches able to build,
boot, and run blob code.
Change-Id: I472604d77f4cb48f286b5a76b25d8b5bfb0c7780
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/174423
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/4895
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Some boards need to override which IRQ the i8042 keyboard
controller has its interrupt on instead of the default
IRQ#1. The SIO_EC_PS2K_IRQ macro provides the mainboard
an ability to override the interrupt location.
BUG=chrome-os-partner:23965
BRANCH=None
TEST=Built and booted rambi using this option. New IRQ is correctly
picked up by kernel allowing keyboard support.
Change-Id: Ic2b222018dfc3aa30e24a31009e832ae0fb7e9cf
Reviewed-on: https://chromium-review.googlesource.com/177222
Tested-by: Bernie Thompson <bhthompson@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: Aaron Durbin <adurbin@chromium.org>
Commit-Queue: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/4978
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
FixedIO seems like a nice short version of IO but in reality
it is limited to 10-bit ISA addresses and so should not really
be used in most situations.
Change all the references to use IO() directly instead.
BUG=chromium:311294
BRANCH=none
TEST=emerge-samus chromeos-coreboot-samus and check for iasl
warnings using updated iasl compiler revision 20130117.
Boot the imge and ensure that EC regions are still exported
in /proc/ioports.
Change-Id: I54de65892bed9e43dbba916990cf2b70c370843c
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/174810
Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/4910
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
This will make it possible for payloads to find the ACPI
NVS region which is needed to get base addresses for devices
that are in ACPI mode.
BUG=chrome-os-partner:24380
BRANCH=none
TEST=build and boot rambi with emmc in ACPI mode
Change-Id: Ia67b66ee8bd45ab8270444bbb2802080d31d14eb
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/179849
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/5015
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
In the case of CONFIG_VBOOT_VERIFY_FIRMWARE not being
selected allow for calling vboot_verify_firmware()
with an empty implementation. This allows for one not to
clutter the source with ifdefs.
BUG=chrome-os-partner:23249
BRANCH=None
TEST=Built with a !CONFIG_VBOOT_VERIFY_FIRMWARE and non-guarded
call to vboot_verify_firmware().
Change-Id: I72af717ede3c5d1db2a1f8e586fefcca82b191d5
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/172711
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: http://review.coreboot.org/4879
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
The Virtual Recovery switch flag needs to be set in coreboot since
it is passed through directly to VBOOT layer by depthcharge.
Rather than add a new config option we can assume that devices with
EC Software Sync also have a virtual recovery switch and set the
flag appropriately.
BUG=chrome-os-partner:25250
BRANCH=all
TEST=build and boot on rambi, successfully enter developer mode
Change-Id: Id067eacbc48bc25a86887bce8395fa3a9b85e9f2
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/183672
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/5061
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Clean up vendor code from hard coded #define if-def chain with a
pre-processor shift and subtract.
Change-Id: Ibce34ab576d7db8586a6ec8f9b2460268e0e1878
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/4811
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
The access to control registers were scattered about.
Provide a single header file to provide the correct
access function and definitions.
BUG=chrome-os-partner:22991
BRANCH=None
TEST=Built and booted using this infrastructure. Also objdump'd the
assembly to ensure consistency (objdump -d -r -S | grep xmm).
Change-Id: Iff7a043e4e5ba930a6a77f968f1fcc14784214e9
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/172641
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/4873
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
There are 3 places rmodule stages are loaded in the
existing code: cbfs and 2 in vboot_wrapper. Much of the
code is the same except for a few different cbmem entry
ids. Instead provide a common implementation in the
rmodule library itself.
A structure named rmod_stage_load is introduced to manage
the inputs and outputs from the new API.
BUG=chrome-os-partner:22866
BRANCH=None
TEST=Built and booted successfully.
Change-Id: I146055005557e04164e95de4aae8a2bde8713131
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/174425
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/4897
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
The W25Q64DW spi part is programatically equivalent
to the other W25Q64 parts except it operates at 1.8V.
Just add a new entry with the appropriate ID.
BUG=chrome-os-partner:22292
BRANCH=None
TEST=SPI controller can program the part.
Change-Id: I65b0261223a9fefcb07477a43b6a3edb8228dd03
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170011
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/5077
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
In order to identify the ram used in cbmem for
reference code blobs add common ids to be consumed
by downstream users.
BUG=chrome-os-partner:22866
BRANCH=None
TEST=Built and booted with ref code support. Noted reference
code entries in cbmem.
Change-Id: Iae3f0c2c1ffdb2eb0e82a52ee459d25db44c1904
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/174424
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/4896
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Romstage and ramstage can use 2 different values for the
amount of ROM to cache just under 4GiB in the address
space. Don't assume a cpu's romstage caching policy
for the ROM.
Change-Id: I689fdf4d1f78e9556b0bc258e05c7b9bb99c48e1
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/4846
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
When not building with CONFIG_SSE there are not enough
registers for ROMCC to use for spilling. The previous
changes to this file had too many local variables that
needed to be tracked -- thus causing romcc compilation
issues.
Change-Id: I3dd4b48be707f41ce273285e98ebd397c32a6a25
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/4845
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
In current cmos.layout baud_rate overlaps with hardcoded reboot byte.
Fix the layout and provide the default for upgrade.
Change-Id: I979b8743c4aab6f17b3acf61b92a74a333203379
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4804
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
As some of the standard definitions were shuffled around
chromeos started failing to build. Correct this.
Change-Id: I9927441ccb2d646e8b3395e6e9f8e8166de74ab0
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/4844
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
The tsc header is using u32 w/o including the file
with defines it.
Change-Id: I9fcad882d25e93b4c0032b32abd2432b0169a068
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/4843
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Checksum is already in cmos_layout.bin. No need to add it twice
Change-Id: I6d12f35fd8ff12eee9a17365bbfab38845c09574
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4829
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Unlike other additions this doesn't require versionning first since
the bootblock reads it anyway from this hardcoded offset.
Change-Id: I3e3f65602bb1b92b91097692ee13e6948a748061
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4832
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Current code just prints warning, defaults match the behaviour of
current code when checksum is incorrect and look sane.
Change-Id: Icda0d3cb3517fc15e6a0ee787b00276d2d435776
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4827
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
The code for handling the invalid CMOS space in mainboard.c
is now useless and so it was removed.
Change-Id: I86ec6a7f73e32948adff9087d4af5372a49a46a5
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: http://review.coreboot.org/3520
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
On Asus A8N-E this test fails but if failure is ignored keyboard works.
Change-Id: Ifeeff2f41537b35bc90a679f956fea830b94292c
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4816
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Allocator can't currently handle both PnP and PCI resources together.
Only 2 resources in PnP are not fixed. So fix them.
Change-Id: Iad695d1d991d110b726ec429fff87c616af5ac8b
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4815
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This small change greatly reduces CBFS fragmentation. There is now a
small gap of only 728 bytes between mrc.bin and mrc.cache, with the
64 KiB alignment maintained for mrc.cache -- assuming systemagent-r6
is used. The gap was just under 64 KiB before.
With this change, it is easier to accommodate fallback and normal
boot stages without having to manually place the stages in the highly
fragmented CBFS.
Change-Id: Ia2340c1928ed6e232949e053d1943c2f5737f741
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/4763
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@gmail.com>
Based on info by Kevin O'Connor.
Change-Id: I21d447fec976e0ee967ba64b0f506c97c22917a3
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4765
Tested-by: build bot (Jenkins)
Reviewed-by: Kevin O'Connor <kevin@koconnor.net>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Not used anymore since microcode was moved.
Change-Id: Id666c80cb20e90e3664c4dcfcc0c41a4aeb4864c
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4788
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
When 2 chips are present to get to the second one you have to use hardware
sequencing. Also use it as the fallback if chip is unknown.
Based on code in flashrom by Stefan Tauner and Carl-Daniel Hailfinger
distributed under compatible license.
Tested on Lenovo X230 which has EN25QH64 (8M) + N25Q032..3E (4M)
Change-Id: I56f3cf0406b5f09fa327ed052c8e8b1df1d8a11f
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4613
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
