The error message from romstage is annoying and misleading:
"Do not use global variables in romstage"
Because it can occur even when global variables are not used
in some circumstances, but also because it gives you only a rough
idea where to look. This change sucks but sucks less. We still don't
know which file the problem is in but at least we know if it is data
or bss.
Replace the error message with something that provides more information
and less guessing on the part of the script:
".bss is non-zero size in romstage which is not allowed -- global variable?"
or
".data is non-zero size in romstage which is not allowed -- global variable?"
To test: build coreboot as normal. It builds.
Add
char d[32];
to romstage.c and get the first error message; add
int x = 32;
to romstage.c and get the second.
Change-Id: I300ec05bdb4b30d7ef3f5112e6cc09b1fafe8263
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/1160
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
The wrapper for Trinity. Support S3. Parme is a example board.
Change-Id: Ib4f653b7562694177683e1e1ffdb27ea176aeaab
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1156
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
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>
They used MP_IRQ_TRIGGER_LEVEL, but it should be MP_IRQ_TRIGGER_EDGE.
While at it, uses mptable_lintsrc() instead.
Change-Id: Ie71311b8bf865889cf0d8808467df98af4b0132d
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1136
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This adds basic supported for the Supermicro X7DB8. Basic means that
almost all onboard peripherals are working. Known problems are:
- mptable needs to be written dynamically. If you plan to use Add on
cards, modify mptable.c according to your needs. A patch to add generic
mptable autogeneration based on devicetree is coming up.
Change-Id: I5eaac32a8bafa69a05929cf08d869127b9464661
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/493
Tested-by: build bot (Jenkins)
Required for Supermicro X7DB8, which needs the FBDIMM clock generator
setup during romstage.
Change-Id: I30ca8354087e851487aee0614595782131d4d9bc
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1116
Tested-by: build bot (Jenkins)
Here's a quick demonstration on how to use it(tested on M4A785T-M).
(gdb) file ./build/cbfs/fallback/coreboot_ram.debug
Reading symbols from [...]/build/cbfs/fallback/coreboot_ram.debug...done.
(gdb) set remotebaud 115200
(gdb) target remote /dev/ttyUSB0
Remote debugging using /dev/ttyUSB0
_text () at src/arch/x86/lib/c_start.S:85
85 call hardwaremain
Change-Id: Ia49cbecc41deb061433bc39f5b81715da49edc98
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: http://review.coreboot.org/1134
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
i3100/i5000 have a second IOAPIC which handles IRQs for PCI-X.
Add code to enable it.
Change-Id: Ib447628f501b152c8adc9c7c89bd09b5615b9e5a
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1118
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The constant value 0x100000000 is used in linker scripts to calculate
offsets from the end of 32-bit-addressed memory. There is nothing
wrong with it, but 32-bit versions of ld do the calculation wrong.
Change-Id: I4e27c6fd0c864b4d98f686588bf78c7aa48bcba8
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1129
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
As Mathias Krause pointed out, using movw/outw on %al is clearly invalid.
Let's do another typo fix...
Change-Id: Ib95832a11097f599a236ab30c64c26ef429a1699
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1119
Tested-by: build bot (Jenkins)
Reviewed-by: Mathias Krause <minipli@googlemail.com>
Peter and Ron pointed out two typos. They have no side effects, but
it's still worth to fix them.
Change-Id: I9aecccdbc72beb2623fbe558a06e4f1b050f6e74
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1117
Tested-by: build bot (Jenkins)
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)
Not doing a hard reset leaves the BOFL0 register cleared, which
prevents the BSP selection from working. To make sure we start
with known values, use the SPAD0 register for soft reset detection.
If there's a value other than 0, do a hard reset.
Change-Id: I390e3208084cfd32d73cce439ddf2bc9d4436a62
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1103
Tested-by: build bot (Jenkins)
Without that fix we have:
LINK cbfs/fallback/romstage_null.debug
build/generated/crt0.romstage.o: In function `ramtest':
romstage.c:(.rom.text+0x53f): undefined reference to `.Lhlt'
collect2: ld returned 1 exit status
make: *** [build/cbfs/"fallback"/romstage_null.debug] Error 1
On the M4A785T-M which doesn't have CONFIG_ROMCC.
Change-Id: I49eded1d18e996afe9441b85dae04ae30c760dd6
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: http://review.coreboot.org/1101
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
- Add #define to allow the FADT PM Profile to be overridden.
- Change the location of the PMA_CNT_BLOCK_ADDRESS to match
current documentation.
- cst_cnt should be 0 if smi_cmd == 0
- add a couple of default access sizes.
- Add a couple of #define values for unsupported C2 & C3 entries.
- Add PM Profile override value into amd/persimmon platform.
This does not use the #defines in acpi.h so that the files that
include this don't all need to start including acpi.h.
Change-Id: Ib11ef8f9346d42fcf653fae6e2752d62a40a3094
Signed-off-by: Martin L Roth <martin@se-eng.com>
Reviewed-on: http://review.coreboot.org/1055
Tested-by: build bot (Jenkins)
Reviewed-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-by: Marc Jones <marcj303@gmail.com>
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)
It is just me or does anybody have the same build error without
this patch?
------
src/arch/x86/boot/acpigen.c: In function 'acpigen_write_empty_PTC':
src/arch/x86/boot/acpigen.c:347:3: error: unknown field 'resv'
specified in initializer
src/arch/x86/boot/acpigen.c:347:3: warning: missing braces around
initializer
src/arch/x86/boot/acpigen.c:347:3⚠️ (near initialization
for 'addr.<anonymous>')
-------
Anyway, I believe at least this will cause warnings.
"resv" is a member of a union, not of acpi_addr_t. So it should be
wrapped by a brace in the initializer.
Change-Id: I72624386816c987d5bb2d3a3a64c7c58eb9af389
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1056
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Marc Jones <marcj303@gmail.com>
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>
This change adds utility functions which allow to read any GPIO pin,
as well as a vector of GPIO pin values.
As presented, these functions will be available to Sandy Bridge and
Ivy Bridge systems only.
There is no error checking: trying to read GPIO pin number which
exceeds actual number of pins will return zero, trying to read GPIO
which is not actually configured as such will return unpredictable
value.
When reading a GPIO pin vector, the pin numbers are passed in an
array, terminated by -1. For instance, to read GPIO pins 4, 2, 15 as a
three bit number GPIO4 * 4 + GPIO2 * 2 + GPIO15 * 1, one should pass
pointer to array of {4, 2, 15, -1}.
Change-Id: I042c12dbcb3c46d14ed864a48fc37d54355ced7d
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: http://review.coreboot.org/1049
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
clang does its own linking, incompatible to our
binutils-centric linker magic.
Change-Id: I243597adcb6bc3f7343c3431d7473610c327353d
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/785
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.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>
Right now coreboot compilation fails when SPI flash debugging is
enabled. Fix it by using the right set of memory functions.
Change-Id: I5e372c4a5df53b4d46aaed9e251e5205ff68cb5b
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1044
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Experiments have shown that writing plain value of 6 at byte io
address of 0xcf9 causes the systems to reset and reboot reliably.
Change-Id: Ie900e4b4014cded868647372b027918b7ff72578
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: http://review.coreboot.org/1050
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Originally, on ChromeBooks, coreboot would provide a modified
u-boot device tree (FDT) to u-boot in CBMEM. However, u-boot
can now create all the information it needs from the coreboot
table and add it to its device tree itself. This means we can
drop this (anyways unused) code.
Change-Id: I4ab20bbb8525e7349b18764aa202bbe81958d06a
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1052
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Originally, ChromeBooks would get the offset of the MRC cache
from an entry in the u-boot device tree. Not everyone wants to
use u-boot on Sandybridge systems, however.
Since the new code (based on Kconfig) is now fully working, we
can drop the u-boot device tree remnants.
Change-Id: I4e012ea981f16dce9a4d155254facd29874b28ef
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1051
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
The MRC region is described by Kconfig variables, no further math
or parsing is required at this point.
Change-Id: I290d8788b69ef007e9ea2317ce55aefa2d791883
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1046
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Without this option bluetooth configuration value in nvram is not
consulted properly.
It also enables built-in volume control (read-only).
Tested on: ThinkPad X60s, 1702.
Change-Id: I2fc6bb527c6e086a083e63922d1253eda7d4a36d
Signed-off-by: Motiejus Jakštys <desired.mta@gmail.com>
Reviewed-on: http://review.coreboot.org/985
Tested-by: build bot (Jenkins)
Reviewed-by: Sven Schnelle <svens@stackframe.org>
The SPI drivers from u-boot make heavy use of %zu/%zd (size_t/ssize_t).
Implement this in our printk implementation so we get useful output.
Change-Id: I91798ff4f28b9c3cd4db204c7ec503596d247dcd
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1043
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
A while back coreboot was changed to read the subsystem IDs from
devicetree.cb to allow each onboard PCI device to have its own
subsystem id. When we originally branched, this was not the case,
and the sandybridge/ivybridge mainboards have not been updated yet.
Also, drop the subsystem ID from Emerald Lake 2, since it's not a
Google device.
Change-Id: Ie96fd67cd2ff65ad6ff725914e3bad843e78712e
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1042
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Only print PP: lines if CONFIG_DEBUG_SPI_FLASH is enabled.
Change-Id: If25e916ecb585f37c90d42980e933a6cd1a3d956
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1045
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
- use %zu instead of %zd for size_t (%zd is for ssize_t)
- use %x instead of %lx for u32
- break some long lines to avoid commit hook trouble
Change-Id: Idfad716523dbcd2a595d26317240e972b5253e8b
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1041
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Stupid typo: APCI instead of ACPI in Persimmon.
Change-Id: I6fd7f091cf1f5c4c0e1b57c21553dab93b545eab
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/1054
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
When compiling coreboot with the latest ChromeOS toolchain, GCC
complains that some printk calls use %zu in connection with size_t
types since it resolves the typedefs to long unsigned int.
The problem is solved by using the GCC built-in __SIZE_TYPE__ if it
exists and define __SIZE_TYPE__ to long unsigned int otherwise.
Change-Id: I449c3d385b5633a05e57204704e981de6e017b86
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1040
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Being a diligent soul, I changed the "enter a numeric value for the
mode you want" option to a choice of common modes. New modes can be
added quite easily.
Change-Id: I8cf4572c2d36ced6549541ec173c0c02d8eaca4a
Signed-off-by: Steve Goodrich <steve.goodrich@se-eng.com>
Reviewed-on: http://review.coreboot.org/1036
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
Remove all the repeated sections of code in cbtypes.h and place it
in a common location. Add include dir in vendor code's Makefile.
Change-Id: Ida92c2a7a88e9520b84b0dcbbf37cd5c9f63f798
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>
Reviewed-on: http://review.coreboot.org/912
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
In the heap function, only check for S3 check when it is built in
with CONFIG_HAVE_ACPI_RESUME.
Change-Id: I439275a4e1b7b446b499bcf90c925785a14b980d
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/1034
Tested-by: build bot (Jenkins)
Reviewed-by: Steve Goodrich <steve.goodrich@se-eng.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The fadt legacy free logic was backwards.
Change-Id: Ieb21ef335f7514ced70248d0bf8668ddb73cf59f
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/1030
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: build bot (Jenkins)
The bootblock.ld linkerscript is used by romstage. Name it
accordingly to avoid confusion.
Change-Id: I7ca9147bb821fe6f83224d170f5fe25654ef250f
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/1031
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: build bot (Jenkins)
Cygwin is case insensitive, so bootblock.s and bootblock.S in the
same directory cause a build failure. This changes bootblock.S
to bootblock_inc.S, as it is generated from bootblock_inc.
crt0.S and crt0.S also had this problem. This changes crt0.S to
crt0.romstage.S.
Change-Id: I29d230a93b0743e34f11228f9034880ceaf7ab7b
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/1032
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: build bot (Jenkins)
Use the coreboot IASL for building SeaBIOS.
Change-Id: Ia6c802b090d53b7fbbc8ddb6edad3de6b822ff41
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/1033
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
lint tests for labels to start at BOL, no spaces before them.
Change-Id: Icf6ce533f26998a81b4be46d17e2d0b6b868904d
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/1029
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The FADT iapc_boot_arch indicates the available information
for accessing legacy devices. By default, the setting supports
legacy. LEGACY_FREE and/or the iapc_boot_arch field may be
customized.
Change-Id: I5679741e1f8db923d3c00b57f6a5d813550f3a5e
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/1024
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Peter Stuge <peter@stuge.se>
The South Station recieved updates that fix a number of fadt problems.
South Station now uses the southbridge fadt.
Change-Id: Ib990a69a359a4b7eae3431bb4323acd537acda1d
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/1021
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Peter Stuge <peter@stuge.se>
Requirements:
- must be in ramstage (locking flash while executing code from there
might not work)
- must be after cbmem is reinitialized (so the mrc cache copy of the
current run can be found)
Change-Id: I8028fb073349ce2b027ef5f8397dc1a1b8b31c02
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/1002
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
- Separate Sandybridge from ChromeOS a bit
The Sandybridge code depends on chromeos features a whole lot.
As a first step, provide a code path to look up the MRC cache
without depending on u-boot.
- Move mrc cache handling to separate file
This enables us to handle the MRC cache from ramstage,
where we can write the flash safely (eg. to update the
cache).
Also teach it to lookup the current MRC cache from CBMEM,
as the original data block isn't available anymore.
After all the preparations, finally write to the SPI
as necessary. It's a simple round robin wear levelling
that erases the entire MRC cache region when it's full
and starts from the beginning.
Change-Id: I4751385574cf709b03d5c9d153b7481ffc90ce12
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/1001
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
