The new broadcast code doesn't support serial init - if a CPU
needs serial init, this should be handled in the model specific CPU
init code.
Change-Id: I7cafb0af10d712366819ad0849f9b93558e9d46a
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1140
Tested-by: build bot (Jenkins)
The current code for initializing AP cpus has several shortcomings:
- it assumes APIC IDs are sequential
- it uses only the BSP for determining the AP count, which is bad if
there's more than one physical CPU, and CPUs are of different type
Note that the new code call cpu->ops->init() in parallel, and therefore
some CPU code needs to be changed to address that. One example are old
Intel HT enabled CPUs which can't do microcode update in parallel.
Change-Id: Ic48a1ebab6a7c52aa76765f497268af09fa38c25
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1139
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Early HT-enabled CPUs do not serialize microcode updates within a core.
Solve this by running microcode updates on the thread with the smallest
lapic ID of a core only.
Also set MTRRs once per core only.
Change-Id: I6a3cc9ecec2d8e0caed29605a9b19ec35a817620
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/1142
Tested-by: build bot (Jenkins)
Reviewed-by: Sven Schnelle <svens@stackframe.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Those CPUs support the PECI (Platform Environment Control
Interface), so enable it. This interface is commonly used
for tasks like fan control.
Change-Id: Id2dadc4821de8cc0b579e77235aa36892e57fd02
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1104
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: build bot (Jenkins)
commit 5b6404e419 ("Fix timer frequency
detection on Sandybridge") reworked the udelay code, but didn't add
the 333MHz FSB entry used on Model 15 Xeons.
Change-Id: Ie34f9ae3703b64672625e7bf1b943654a7a5eaa6
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1099
Tested-by: build bot (Jenkins)
Without that fix the debugging is harder because the person debugging
coreboot will see the following twice(note the repeated MTRR number):
Setting variable MTRR 0, base: 0MB, range: 4096MB, type WB
[...]
Setting variable MTRR 1, base: 4096MB, range: 512MB, type WB
Setting variable MTRR 1, base: 4608MB, range: 256MB, type WB
Setting variable MTRR 1, base: 3072MB, range: 1024MB, type UC
instead of the following twice:
Setting variable MTRR 0, base: 0MB, range: 4096MB, type WB
[...]
Setting variable MTRR 1, base: 3072MB, range: 1024MB, type UC
Thanks to kmalkki on #coreboot's Freenode IRC channel for the idea:
May 25 23:57:17 <kmalkki> I would add (move) that "Setting variable MTRR..." debug at the end of set_var_mtrrs()
Change-Id: I9f4b7110ba34d017a58d8cc5fb06a7b1c3d0c8aa
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: http://review.coreboot.org/1058
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
It's only used in the ACPI generator for Sandybridge/Ivybridge CPUs
and the code can easily be changed to not rely on any Kconfig magic.
Change-Id: Ie2f92edfe8908f7eb2fda3088f77ad22f491ddcf
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1047
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Replace #elif (CONFIG_FOO==1) with #elif CONFIG_FOO
find src -type f -exec sed -i "s,\(#.*\)(\(CONFIG_[A-Z0-9_]*\)[[:space:]]*==[[:space:]]1),\1\2,g" {} +
(manual tweak since it hit a false positive)
Replace #elif (CONFIG_FOO==0) with #elif !CONFIG_FOO
find src -type f -exec sed -i "s,\(#.*\)(\(CONFIG_[A-Z0-9_]*\)[[:space:]]*==[[:space:]]0),\1\!\2,g" {} +
Change-Id: I8f4ebf609740dfc53e79d5f1e60f9446364bb07d
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/1006
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Martin Roth <martin@se-eng.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Another bug in the Intel microcode update code that existed since we switched
to LinuxBIOSv2 in 2004:
The inline assembly code that reads the CPU revision from an MSR after running
cpuid(1) trashes registers EBX and ECX. Only ECX was mentioned in the clobber
list. C code running after this function could silently access completely wrong
data, which resulted in the wrong date being printed on microcode updates (and
potentially other issues happening until the C code writes to EBX again)
Change-Id: Ida733fa1747565ec9824d3a37d08b1a73cd8355f
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/996
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
If microcode.c is built by romcc, this indicates that we are running
microcode updates in the bootblock (e.g. before enabling cache as ram).
In this case we did not enable any consoles yet, so we don't output
anything.
This patch removes inclusion of the unnecessary console/console.h for
that case, which was breaking with certain configurations.
Change-Id: Iebb57794d7b1e84cac253d249d47b88de4dd28a3
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/988
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
CONFIG_MAX_PHYSICAL_CPUS is defined by quite a number of
mainboards whithout any code actually using the variable.
Hence, drop MAX_PHYSICAL_CPUS from Kconfig for those boards.
In the long run we should drop CONFIG_MAX_PHYSICAL_CPUS use
completely and make the code dynamic or depend on CONFIG_MAX_CPUS
instead.
Change-Id: I37dcc74d245ddba5186b96bd82220dacb6f4d323
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/984
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Instead of the special case in the generic Makefile.inc,
use cbfs-files in the CPU directories.
Change-Id: I71d9c8dff906c9a516ac0dd09a315f8956075592
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/962
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
... or fail if repository is not enabled.
Change-Id: I0a1e6d6fed852ec7edf96ace8346ae6b23838a56
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/959
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
This code fixes the sandybridge C state generation code to work with
the current version of the ACPI code generator.
Change-Id: I56ae1185dc0694c06976236523fdcbe5c1795b01
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/950
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
... in order to unify the Sandybridge and Lenovo implementations
currently used in the tree.
- use acpi_addr_t in acpigen_write_register()
- use acpi_cstate_t for cstate tables (and fix up
the x60 and t60)
- drop cst_entry from acpigen.h
Change-Id: Icb87418d44d355f607c4a67300107b40f40b3b3f
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/943
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
There is no reason for this to be a top level directory.
Some stuff from lib/ should also be moved to drivers/
Change-Id: I3c2d2e127f7215eadead029cfc7442c22b26814a
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/939
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Most subsystems print their name with a colon, and then the
message. Do the same thing for the microcode update code.
Also, each microcode update has a date header. Print the
date from that header to make it easier to determine whether
you're running the latest microcode.
Change-Id: Ic22947c4b9f0502d4091d975e1f1ab42f70aa1aa
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/929
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: build bot (Jenkins)
- add GPLv2 + copyright header after talking to Ron
- "bits" in struct microcode served no real purpose but
getting its address taken. Hence drop it
- use asm volatile instead of __asm__ volatile
- drop superfluous wrmsr (that seems to be harmless but
is still wrong) in read_microcode_rev
- use u32 instead of unsigned int where appropriate
- make code usable both in bootblock and in ramstage
- drop ROMCC style print_debug statements
- drop microcode update copy in Sandybridge bootblock
Change-Id: Iec4d5c7bfac210194caf577e8d72446e6dfb4b86
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/928
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Instead of opaque numbers like (1<<29), use
symbols like CR0_NoWriteThrough.
Change-Id: Id845e087fb472cfaf5f71beaf37fbf0d407880b5
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/833
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Comment out the id variable which is used in a commented code
block.
Change-Id: Ib002d57e5314971f0589d04b7e451ab7d7079f53
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>
Reviewed-on: http://review.coreboot.org/913
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This change reverts :
Change Id I4fdb281b2b684ab5fea999aae28ca08dce24da4d
The wbinvd (or invd) should not be needed at the reset vector. It
causes problems with some CPUs AP init. If there is a problem with
a specific CPU and it must be done at this location, it should be
added conditionally.
Change-Id: I85b71b0a07f039359a4fb889aaa05c75fff619be
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/908
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
1. Move the Stack to high memory.
2. Restore the MTRR before Coreboot jump to the wakeup vector.
Change-Id: I9872e02fcd7eed98e7f630aa29ece810ac32d55a
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/623
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
Change the ExecuteFinalHltInstruction to assembly code. so we can make
sure the code can run stackless.
Change-Id: I783ced6cf7c5bc29c12a37aef29077e610d8957d
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/622
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
In the early days of v2 the (e.g.) #ifdef SMP style was frowned upon in
some quarters.
Hence, empty definitions of functions were created. This
particular function, possibly the last remaining example,
was no longer even being used anywhere.
Signed-off-by: Ron Minnich <rminnich@gmail.com>
- preprocessor macros should not use defined(CONFIG_*) but
just CONFIG_*
- drop AMD CPU model 14XXX config variable use. Those do not exist.
- skip some delays on Sandybridge systems
- Count how long we're waiting for each AP to stop
- Skip speedstep specific CPU entries
Change-Id: I13db384ba4e28acbe7f0f8c9cd169954b39f167d
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/871
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Fix regression after commit:
7dfe32c540
Only align 16-bit entry on platforms that really require it,
indicated by selecting SIPI_VECTOR_IN_ROM in CPU Kconfig.
Disable assertion test of AP_SIPI_VECTOR for platforms not
depending on this feature.
Build of romstage should be fixed to get the vector address from
bootblock build automatically.
Change-Id: Ide470833c0254df1a9ff708369ab1c095ccfb98d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/875
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Previously this part of smmrelocate.S had to be omitted because
the CONFIG_ options for those components did not exist yet. Add
them back.
Change-Id: I6ac94ca804e03062724401a08d1d174adac5e830
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/874
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Tested-by: build bot (Jenkins)
Also fix the MTRR check to use the total_mtrrs
variable instead of a hardcoded 8.
Change-Id: I2c5ceb3910cd949f43ecf5b8aff857d6ffe0b1a5
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/873
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Some CPUs (Sandybridge) seem to require this, and it does not hurt
on other CPUs.
Change-Id: I4fdb281b2b684ab5fea999aae28ca08dce24da4d
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/869
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
Traditionally coreboot's SMM handler runs in ASEG (0xa0000),
"behind" the graphics memory. This approach has two issues:
- It limits the possible size of the SMM handler (and the
number of CPUs supported in a system)
- It's not considered a supported path anymore in newer CPUs.
Change-Id: I9f2877e46873ab2ea8f1157ead4bc644a50be19e
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Acked-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/842
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: build bot (Jenkins)
From wikipedia:
Intel Turbo Boost is a technology implemented by Intel in certain
versions of their Nehalem- and Sandy Bridge-based CPUs, including Core
i5 and Core i7 that enables the processor to run above its base
operating frequency via dynamic control of the CPU's "clock rate".
It is activated when the operating system requests the highest
performance state of the processor.
Change-Id: I166ead7c219083006c2b05859eb18749c6fbe832
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/844
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The socket mPGA604 is for P4 Xeon which to my knowledge is always
HT-enabled. I assume the existing usage of car/cache_as_ram.inc
on socket_mPGA604, namely the Tyan S2735, as broken.
Existing car/cache_as_ram.inc has invalid SIPI vector and it does
not initialise AP CPU's to activate L2 cache.
Other mPGA604 boards are not affected, as they have not been
converted to CAR.
Change-Id: I7320589695c7f6a695b313a8d0b01b6b1cafbb04
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/607
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
some blank changing is integrated into the previous patches, which hold
the unsplitted diff hunk.
Change-Id: If9e5066927c5e27fee7ac8422dbfbf2cbeac7df5
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/625
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
Use CPUID to get MAXPHYADDR and set MTRR masks correctly.
Also only BSP CPU clears MTRRs and initializes its Local APIC.
Change-Id: I89ee765a17ec7c041284ed402f21d9a969d699bd
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/686
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This improvement of CAR code starts the sibling CPU processors and
clears their cache disable bits (CR0.CD) in case a hyper-threading
CPU is detected.
Change-Id: Ieabb86a7c47afb3e178cc75bb89dee3efe0c3d18
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/604
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Most or many Xeons have no MSR 0x11e.
I have previously tested that a HT-enabled P4 (model f25) can
execute this but will not have cache-as-ram enabled. Should work
for non-HT P4.
Change-Id: I28cbfa68858df45a69aa0d5b050cd829d070ad66
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/644
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
For a hyper-threading processor, enabling cache requires that both the
BSP and AP CPU clear CR0.CD (Cache Disable) bit. For a Cache-As-Ram
implementation, partial multi-processor initialisation precedes
raminit and AP CPUs' 16bit entry must be run from ROM.
The AP CPU can only start execute real-mode code at a 4kB aligned
address below 1MB. The protected mode entry code for AP is identical
with the BSP code, which is already located at the top of bootblock.
This patch takes the simplest approach and aligns the bootblock
16 bit entry at highest possible 4kB boundary below 1MB.
The symbol ap_sipi_vector is tested to match CONFIG_AP_SIPI_VECTOR
used by the CAR code in romstage. Adress is not expected to ever
change, but if it does, link will fail.
Change-Id: I82e4edbf208c9ba863f51a64e50cd92871c528ef
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/454
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Delete dead CAR code and whitespace fixes.
Replace cryptic 32bit hex values with existing LAPIC definitions.
Do not assume state of direction flag before "rep" instruction.
Do not load immediate values on temporary registers when not needed.
Parameter pushed on stack was not popped (or flushed) after returning
from call. This is a sort-of memory leak if multiple call's are
implemented the same way.
Change-Id: Ibb93e889b3a0af87b89345c462e331881e78686a
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/643
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Cache was enabled for the last 4 MB below 4 GB when ramstage is
loaded. This does not cover the case of a 8 MB Flash and could
overlap with some system device placed at high memory.
Use the actual device size for the cache region. Mainboard
may override this with Kconfig CACHE_ROM_SIZE if necessary.
Change-Id: I622223b1e2af0b3c1831f3570b74eacfde7189dc
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/641
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Copy model_6ex CAR as car/cache_as_ram_ht.inc to be extended
with hyper-threading CPU support.
Change-Id: I09619363e714b1ebf813932b0b22123c1d89010e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/606
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This affects the algorithm when determining when to
transform a range into a larger range with a hole.
It is needed when for when I switch on an 8MB TSEG
and cause the memory maps to go crazy.
Also add header defines for the SMRR.
Change-Id: I1a06ccc28ef139cc79f655a8b19fd3533aca0401
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/765
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
With >= 4GB memory installed we get a memory map split in the middle
due to remap that has boundaries that are inconveniently aligned for
MTRRs due to the various UMA regions.
0000MB-2780MB 2780MB RAM (writeback)
2780MB-2782MB 2MB TSEG (uncached/SMRR)
2782MB-2784MB 2MB GFX GTT (uncached)
2784MB-2816MB 32MB GFX UMA (uncached)
2816MB-4096MB 1280MB EMPTY (N/A)
4096MB-5368MB 1272MB RAM (writeback)
5368MB-5376MB 8MB ME UMA (uncached)
The default MTRR allocation method of trying to cover everything
with one MTRR and then carve out a single uncached region does
not work for the GPU aperture which needs write-combining type,
and it also has issues trying to cover the uneven boundaries
in the avaiable variable MTRRs.
My goal was to make a minimal set of changes and avoid modifying
behavior on existing systems with an algorithm that is not always
optimal for a typical memory layout. So the flag 'above4gb=2'
will change these allocation behaviors:
1) Detect the number of available variable MTRRs rather than
limiting to hardcoded value. We need every last MTRR.
2) Don't try to cover all RAM with one MTRR, instead let each
RAM region get covered independently.
3) Don't assume uma_memory_base is part of the last region
and increase the size of that region. In this case the UMA
region is carved out from the lower memory region and it is
already declared as part of the ram region.
4) If a memory region can't be covered with MTRRs >= 16MB then
instead make a larger region and trim it with uncached MTRRs.
Change-Id: I5a60a44ab6d3ae2f46ea6ffa9e3677aaad2485eb
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/761
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Future CPUs will require TSEG use for SMM
Change-Id: I1432569ece4371d6e12c997e90d66c175fa54c5c
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/766
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
