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Certain chipsets don't have a memory-mapped boot media
so their code execution for stages prior to DRAM initialization
is backed by SRAM or cache-as-ram. The postcar stage/phase
handles the cache-as-ram situation where in order to tear down
cache-as-ram one needs to be executing out of a backing
store that isn't transient. By current definition, cache-as-ram
is volatile and tearing it down leads to its contents disappearing.
Therefore provide a shim layer, postcar, that's loaded into
memory and executed which does 2 things:
1. Tears down cache-as-ram with a chipset helper function.
2. Loads and runs ramstage.
Because those 2 things are executed out of ram there's no issue
of the code's backing store while executing the code that
tears down cache-as-ram. The current implementation makes no
assumption regarding cacheability of the DRAM itself. If the
chipset code wishes to cache DRAM for loading of the postcar
stage/phase then it's also up to the chipset to handle any
coherency issues pertaining to cache-as-ram destruction.
Change-Id: Ia58efdadd0b48f20cfe7de2f49ab462306c3a19b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14140
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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Instead of hard-coding var mtrr numbers in code, use this function to
identify the first available variable mtrr. If no such mtrr is
available, the function will return -1.
Change-Id: I2a1e02cdb45c0ab7e30609641977471eaa2431fd
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/14115
Tested-by: build bot (Jenkins)
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
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In order to make this work earlymtrr.c needed to be removed
from intel/truxton/romstage.c. It's not a ROMCC board so
there's no reason to be including .c files.
Change-Id: If4f5494a53773454b97b90fb856f7e52cadb3f44
Signed-off-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-on: https://review.coreboot.org/14094
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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I see no user of any of this code. Remove it.
Change-Id: I776cd3d9ac6578ecb0fe6d98f15611e4463afb7a
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14098
Tested-by: build bot (Jenkins)
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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The Intel i3100 northbridge code is the only user of
cache_ramstage(). Therefore, place it next to the sole
consumer.
Change-Id: If15fb8d84f98dce7f4de9e089ec33035622d8f74
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14097
Tested-by: build bot (Jenkins)
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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Use UDELAY_IO selected by CPU_VIA_C7, so no manual inclusion
(or secondary UDELAY implementation) is needed
Change-Id: Ib086a1bfe8ffca5757bf553c5a62a45da7a410b6
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/13782
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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Instead of manually including udelay_io.c in each romstage,
select UDELAY_IO for all i440BX boards in the chipset.
Change-Id: I411191927f3fba1d0749edcf79378e8013fb195a
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/13781
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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For all the chipsets which were performing the following sequence:
x86_setup_fixed_mtrrs();
x86_setup_var_mtrrs(cpuid_eax(0x80000008) & 0xff, 2);
Replace that with x86_setup_mtrrs_with_detect() since it is equivalent.
Change-Id: I9f362dbf38942d675f615d22b9e5770ce65e5a08
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13936
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
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UDELAY_IO is defined in src/cpu/x86/Kconfig, so it does
not need to be redefined in the AMD cpu or board Kconfigs.
Change-Id: I6676881c0ba5d1634230fc3d3c37da3afbc6fceb
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/13780
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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The current MTRR API doesn't allow one to detect variable MTRRs
along with handling fixed MTRRs in one function call. Therefore,
add x86_setup_mtrrs_with_detect() to perform the same actions
as x86_setup_mtrrs() but always do the dynamic detection.
Change-Id: I443909691afa28ce11882e2beab12e836e5bcb3d
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13935
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
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Change-Id: I25ea327ed151e18ccb5d13626d44925d2a253d08
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/10012
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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Attempt to better document the symbol usage in car.ld for
cache-as-ram usage. Additionally, add _car_region_[start|end]
that completely covers the entire cache-as-ram region. The
_car_data_[start|end] symbols were renamed to
_car_relocatable_data_[start|end] in the hopes of making it
clearer that objects within there move. Lastly, all these
symbols were added to arch/symbols.h.
Change-Id: I1f1af4983804dc8521d0427f43381bde6d23a060
Signed-off-by: Andrey Petrov <andrey.petrov@intel.com>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13804
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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Instead of keeping track of all the combinations of entry points
depending on the stage and other options just use _start. That way,
there's no need to update the arch/header.ld for complicated cases
as _start is always the entry point for a stage.
Change-Id: I7795a5ee1caba92ab533bdb8c3ad80294901a48b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13882
Tested-by: build bot (Jenkins)
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
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In order to align the entry points for the various stages
on x86 to _start one needs to rename the reset_vector symbol.
The section is the same; it's just a symbol change.
Change-Id: I0e6bbf1da04a6e248781a9c222a146725c34268a
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13881
Tested-by: build bot (Jenkins)
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
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In order to avoid collisions with other _start symbols while
grepping and future ones be explicit about which _start this
one is: the 16-bit one only used by the reset vector in the
bootblock.
Change-Id: I6d7580596c0e6602a87fb158633ce9d45910cec2
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13880
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
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It's helpful to see the reset vector in objdump output. Without
it being marked executable it doesn't get displayed.
Change-Id: I85cb72ea0727d3f3c2186ae20b9c5cfe5d23aeed
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13879
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
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Patrick at least indicated this jump after the reset
vector jump was a remnant from some construct used long
ago in the project. It's not longer used (nor could I find
where it was). Therefore, remove it.
Change-Id: I31512c66a9144267739b08d5f9659c4fcde1b794
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13878
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
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Change-Id: Ib73abb0ada7dfdfab3487c005719e19f51ef1812
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: https://review.coreboot.org/13779
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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Change-Id: I17ba5a85fecf08ab9970a57c7696525287bbc5a8
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/13745
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Change-Id: Ib20d88bb208a605b6bf44e6bf7151c24a08549aa
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/13702
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Tested-by: build bot (Jenkins)
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Change-Id: I397c908867fef7583063c8cad7b83ce53482529b
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: https://review.coreboot.org/13708
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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These license headers were either not compliant with the coreboot
standard or were missing completely.
Change-Id: I0c46ad9ba7f3d950b3eff96ee6e9c36acbf1a3a5
Signed-off-by: Damien Roth <yves.r.roth@gmail.com>
Reviewed-on: https://review.coreboot.org/13288
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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Add missing license headers to files that have no coreboot header.
Change-Id: Iaaa04b5dcbd446a2064ac68d501ae8e860486e36
Signed-off-by: Damien Roth <yves.r.roth@gmail.com>
Reviewed-on: https://review.coreboot.org/13289
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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These licence headers were not compliant with the coreboot standard.
Change-Id: I85bb5f971ab1f8ac3e9589f712370fbf09716b67
Signed-off-by: Damien Roth <yves.r.roth@gmail.com>
Reviewed-on: https://review.coreboot.org/13287
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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Tested by making lenovo x230 configurable despite pretty MRC bugs.
Change-Id: Ia2a123f24334f5cd5f42473b7ce7f3d77c0e65b7
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: https://review.coreboot.org/13658
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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This is needed in a follow-on patch to enable udelay() handling on
apollolake, which is a dependency for the console code.
Change-Id: I7da6a060a91b83f3b32c5c5d269c102ce7ae3b8a
Signed-off-by: Alexandru Gagniuc <alexandrux.gagniuc@intel.com>
Reviewed-on: https://review.coreboot.org/13302
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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The previous usage of the intel microcode support supported using
the library under ROMCC and ramstage. Allow for microcode support
to be used in normal C-based romstage as well by:
1. Only using walkcbfs when ROMCC is defined.
2. Only using spinlocks if !__PRE_RAM__
The header file now unconditionally exposes the declarations
of the supporting functions.
Change-Id: I903578bcb4422b4c050903c53b60372b64b79af1
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13611
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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On certain systems and CPUs Core Performance Boost (CPB) may cause
sporadic system lockups. This issue is also somewhat known on the
various proprietary BIOSes, therefore it seems to be a hardware
incompatibility when present.
Allow the user to disable CBP if needed.
Change-Id: Id6395d067d48963f6c084ad0bf79e23419af24d8
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/13172
Tested-by: build bot (Jenkins)
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
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Multilink Family 15h processors were being configured with an
incorrect PowerStepUp/PowerStepDown value. Set the value
according to the BKDG, and clean up the terrible formatting
of the power_up_down() function that led to the incorrect
values being overlooked until now.
Also change u32 declarations to uint32_t in modified functions.
Change-Id: I16e1f5205d6b5f349a3e7167dea04c9eefda4684
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/13174
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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This fixes some spelling and whitespace issues that I came across
while working on various things in the tree.
There are no functional changes.
Change-Id: I33bc77282f2f94a1fc5f1bc713e44f72db20c1ab
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/13016
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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Add the AMD A8-660K APU.
Change-Id: I210a8ba962529c26a535965689672a46b09e325f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/13510
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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- Add CONFIG_ prefix to two symbols.
- Remove the use of the third symbol as it will never be matched.
Change-Id: Ifa7f6884001cb05fb8397f193c4b08a0161f498c
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/13539
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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Change-Id: Ie175b5b490f77cc380536ebd737da8618d4b448b
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/13170
Tested-by: build bot (Jenkins)
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
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Under certain conditions, such as when microcode updates are
being performed, it is important to make sure all APs have
finished updates and are halted before continuing with the
boot process.
Add a new wait_ap_stopped() function to allow for this
functionality to be added to the appropriate mainboard
romstage source files.
Change-Id: Ib455c937888a58b283bd3f8fda1b486eea41b0a7
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/13168
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
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The existing code did not allow for the second core of the BSP to
reside on an APIC ID other than 1, leading to a boot hang on Family
15h processors when APIC_ID_OFFSET was set to anything other than 0.
Furthermore, insufficient AP stack space was allocated for AP start.
Change-Id: I4ded3cfb3736149e2265848014352d7622d5042a
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/13158
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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The existing code generated an incorrect boot APIC ID from node and
core number for single node packages, leading to a boot failure when
the second node was installed.
Properly generate the boot APIC ID from node and core number.
Change-Id: I7a00e216a6841c527b0a016fa07befb42162414a
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/13149
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
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Instead of tagging object files with .<class>, move them to a <class>
directory below $(obj)/. This way we can keep a 1:1 mapping between
source- and object-file names.
The 1:1 mapping is a prerequisite for Ada, where the compiler refuses
any other object-file name.
Tested by verifying that the resulting coreboot.rom files didn't change
for all of Jenkins' abuild configurations.
Change-Id: Idb7a8abec4ea0a37021d9fc24cc8583c4d3bf67c
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/13181
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
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There were several spots in the tree where the path to a per class
object file was hardcoded. To make use of the src-to-obj macro for
this, it had to be moved before the inclusion of subdirs. Which is
fine, as it doesn't have dependencies beside $(obj).
Tested by verifying that the resulting coreboot.rom files didn't change
for all of Jenkins' abuild configurations.
Change-Id: I2eb1beeb8ae55872edfd95f750d7d5a1cee474c4
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/13180
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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The existing CBMEM TOM calculations did not account for the CC6 save region
(when enabled); this resulted in CBMEM storage being placed on top of the
CC6 save region, which resulted in corrupt CBMEM data and a boot hang.
Change-Id: I32399da0438d7b16e05192449be625f9aa675b18
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/13143
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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The existing code unconditionally cleared the LDT tristate enable bit,
which was incorrect for C32 sockets. Update the code to be in line
with the BKDG recommendations.
Change-Id: I8095931973ea10f1467a6621092e88c6c494565a
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/13142
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
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Replace with the more familiar AT&T syntax.
Tested by sha1sum(1)ing the object files, and checking the objdump that
the code in question was actually compiled.
Change-Id: Ibdc024ad90c178c4846d82c5308a146dd1405165
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/13133
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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These files provide symbols needed by console and uart drivers. This
was not an issue in the past, as we were not setting up a C
environment this early in the boot process.
Change-Id: Ied5106ac30a68971c8330e8f8270ab060994a89d
Signed-off-by: Alexandru Gagniuc <alexandrux.gagniuc@intel.com>
Reviewed-on: https://review.coreboot.org/12869
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Selecting Kconfig symbols that were created inside a 'choice' block
have no effect. Remove these so people aren't confused by them.
Change-Id: I7de9131d8d8afb65f86648afb9728f09cb67e122
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12970
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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The error informing the user that the CPU device cannot be
allocated has a typo incorrectly spelling "allocate" as
"allocte".
TEST=Compiled
Change-Id: I2a6bad56133e375e2fd6a670593791414bf0dc2c
Signed-off-by: Jacob Laska <jlaska91@gmail.com>
Reviewed-on: https://review.coreboot.org/13030
Tested-by: build bot (Jenkins)
Reviewed-by: Ben Frisch <bfrisch@xes-inc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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When microcode updates are enabled, this fixes an issue identical
to that described in GIT hash 7b22d84d:
* drivers/pc80: Add optional spinlock for nvram CBFS access
Change-Id: Ib7e8cb171f44833167053ca98a85cca23021dfba
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/12063
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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The AMD Family 10h/15h processors use a TSC that increments at
the P0 core frequency. Allow coreboot to query the TSC frequency.
Change-Id: I73ead4fd4af18991452d59985b667a54689778cd
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/12834
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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Non-code flow assembly stubs do not have to be included in
bootblock.S, now that we have more freedom in bootblock linking.
Rather than bringing these stubs to the config system, just link them
in the bootblock.
Note that we cannot fully remove CHIPSET_BOOTBLOCK_INCLUDE at this
point, as some intel SOCs use this stub for code flow.
objdump -h build/cbfs/fallback/bootblock.debug on a few random boards
confirms that the appropriate sections are still included in the
final binary.
Change-Id: Id3f9ece14e399c1cc83090f407780c4a05a076f0
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: https://review.coreboot.org/11856
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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Looking at the A10 datasheet, N should go in bits 2:0, but
was being cleared by shifting it left by three bits, then
anding it with 7.
Fixes coverity warning:
CID 1241888 (#1 of 1): Wrong operator used (CONSTANT_EXPRESSION_RESULT)
operator_confusion: (n << 3) & (7U /* 7 << 0 */) is always 0 regardless
of the values of its operands. This occurs as the bitwise second operand
of '|'.
Change-Id: I17e71a73adf37a62607e8e5865b1da749d7278aa
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12779
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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When enabling the IOMMU on certain systems dmesg is spammed with I/O page faults like the following:
AMD-Vi: Event logged [IO_PAGE_FAULT device=00:14.0 domain=0x000a address=0x000000fdf9103300 flags=0x0030]
Decoding the faulting address:
0x000000fdf9103300
fdf91x Hypertransport system management region
33 SysMgtCmd (System Management Command) = 0x33
3 Base Command Type = 0x3: STPCLK (Stop Clock request)
3 SMAF (System Management Action Field) = [3:1] = 0x1
1 Signal State Bit Map = [0] = 0x1
Therefore, the error appears to be triggered by an upstream C1E request.
This was eventually traced to concurrent access to the SP5100's SPI Flash controller by
multiple APs during startup. Calls to the nvram read functions get_option and read_option
call CBFS functions, which in turn make near-simultaneous requests to the SPI Flash
controller, thus placing the SP5100 in an invalid state. This limitation is not documented
in any public AMD errata, and was only discovered through considerable debugging effort.
Change-Id: I4e61b1ab767b1b7958ac7c1cf20eee41d2261bef
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/12061
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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The binary is taken from blobs, so the script should live over
there, too.
Change-Id: I3cc0aabc846c352ccf5cb348132b320a37f273a6
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/12725
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
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