The required power MSRs are mirrored in MCHBAR so
it is possible to configure TDP at runtime via ASL.
This adds the required fields and a set of methods to
configure "TDP down" and "TDP nominal". It explicitly
does not support "TDP up" at the moment.
PSSS: method is added to assist in searching the _PSS
table for the appropriate entry that corresponds to the
desired max non-turbo ratio.
STND: Set TDP Down from Nominal. This will limit CPU to
the TDP down configuration by sequencing the required
changes in the right order.
STDN: Set TDP Nominal from Down. This will set the CPU
back to nominal configuration by sequencing the required
changes in the correct (reverse) order.
This does not introduce any functional changes and must
be paired with additional changes to be useful.
The current configured TDP can be checked to see that
the transition to/from a desired level is successful.
> mmio_read8 0xfed15f50
0x00 # TDP-Nominal
> mmio_read8 0xfed15f50
0x01 # TDP-Down
Change-Id: I31a2f30cc9d134cc5eee980ae9288ae45e71c6e6
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1344
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The default TCC activation offset is 0, which means TCC
activation starts at Tj_max. For devices with limited
cooling ability it may be desired to lower TCC activation.
This adds an option that can be declared in the devicetree
to set the TCC activation to a non-zero value.
Enable tcc_offset=15 in devicetree.cb and build/boot
the BIOS and check that the value is set in the MSR:
> and $(shr $(rdmsr 0 0x1a2) 24) 0xf
0xf
Change-Id: I88f6857b40fd354f70fa9d5d9c1d8ceaea6dfcd1
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1343
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Split this behavior out from PNOT() so the OS can
update _PPC limit without re-reading C-state tables.
Change-Id: I81b9111a4866f6b9916f74ac57a3caefaa77c565
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1342
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The existing NVS variable for PPCM will be used to
select a dynamic max P-state.
By itself this does not change existing behavior because
the NVS PPCM variable is initialized to zero.
PPCM can be tested by building and booting a modified BIOS
that sets gnvs->ppcm to a value greater than 1 and checking
from the OS that the P-state is limited to that value.
Change-Id: Ia7b3bbc6b84c1aa42349bb236abee5cc92486561
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1341
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This will allow various teams to select which thermal sensor
will control the thermal zones.
Also add a method to notify the thermalzones of a change
so these threshold/sensor methods take effect.
Needs a modified BIOS that uses the NVS TMPS value in
the thermalzone to read a different sensor.
Then, use a kernel driver that contains the following:
/* Adjust temperature sensor id to 2 */
union acpi_object param;
struct acpi_object_list input;
param.type = ACPI_TYPE_INTEGER
param.integer.value = 2
input.count = 1;
input.pointer = ¶m;
acpi_evaluate_object(NULL, "\\TMPU", &input, NULL);
And ensure that the temperature sensor that is being
monitored switches to ID 2.
Change-Id: I6319741358ba31eb8a3dc635d64f3f0acf683386
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1340
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The ME device was being sent EOP and the PCI device hidden during
coreboot so it was not available in the SMI finalize step.
This also flips the PCI vendor/device dword around for the match.
Boot on Panther Point with serial and SMI debugging enabled and see
that ME EOP message is sent and the device is hidden at end of
U-boot and before the kernel loads.
Finalizing Coreboot
SMI# #0
ME: mkhi_end_of_post
ME: END OF POST message successful (0)
PM1_STS: TMROF
PM1_EN: 120
Starting kernel ...
Change-Id: I230038c62c50db2a1c94078c0a2a67bdc232440e
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1338
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The LPC bus normally allocates the range for legacy devices,
0-0x1000. Some devices on LPC are above that range and need to
be accounted for. Check the decode range settings for addresses
> 0x1000 and reserve them.
Change-Id: Idba800d7cee3185296f29dd237ba306f3de8de55
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/1337
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Events are logged for SMIs that trigger ACPI sleeps state
entry and when the power button press triggers an SMI such
as at the developer/recovery screens.
Generate ACPI sleep state events and power button
events and verify they show up in the log:
153 | 2012-06-23 17:12:59 | ACPI Enter | S5
184 | 2012-06-23 17:15:50 | ACPI Enter | S3
216 | 2012-06-23 17:28:58 | Power Button
Change-Id: Iba134d619780e459bce189d36d57844997ffb009
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1320
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Unfortunately the drive strength values are very much board
specific and different between mobile and desktop so we don't
try to do any fancy detection here but let it be specified
directly in the devicetree.
Change-Id: I66674bff0de04ecd088fb09afad1cf801a374df2
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/1347
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
In order to support the GSMI interface the SMI handler needs
to find and use the state save area from the same CPU that
initiated the SMI. In this case it is a synchronous SMI
resulting form an IO write to port 0xB2.
To find the right CPU state save area iterate over the region
until the "IO Misc Info" field reports the expected value and
then proceed to use that state save area.
This is needed because the coreboot SMI handler only executes on
one core, and that core is non-deterministic. It is likely that
the core executing the C SMM handler is not the same one that
actually did the IO write to 0xB2 and generated the SMI.
The GSMI parameter buffer is passed as a pointer to EBX in the
tate save area, and the GSMI command is extracted from EAX before
it is used as the return value.
This interface is tested by enabling CONFIG_GOOGLE_GSMI in the
kernel and generating events and verifying that they end up
in the event log.
159 | 2012-06-23 16:22:45 | Kernl Event | Clean Shutdown
184 | 2012-06-23 17:14:05 | Kernl Event | Oops
185 | 2012-06-23 17:14:05 | Kernl Event | Panic
Change-Id: Ic121ea69e9f50c88467c435e095c3e3629989806
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1317
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Read event routine didn't get the correct BIOS callout. So it could not get
the heap address. Then it would creat many warning in serial port.
Change-Id: Ia35601bda1579c7f726ed767d7be78713ac185d2
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1266
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The board has a marvell NIC, but the driver to disable NIC BIOS was adapted
from a Realtek 8168 driver. Rename to reflect the change.
Also hook up as driver, so coreboot can actually find it.
Change-Id: Ibdfd6074eb28ba537d68552a3346b06493cef2a6
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/1355
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
One copy was slightly different, but all the differences were commented out
Change-Id: I3cc7b5621c681a1eb286f9b16ef3ebdce03abb6b
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/1356
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
EHCI debug allows to send message with 8 bytes length, but
we're only sending one byte in each transaction. Buffer up
to 8 bytes to speed up debug output.
Change-Id: I9dbb406833c4966c3afbd610e1b13a8fa3d62f39
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1357
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.huber@secunet.com>
On SandyBridge systems configured to work with Panther Point the CPU
would wrongly be described as IvyBridge. Fix this issue and drop an
unneeded Kconfig variable at the same time.
Change-Id: I501a4fa00613e589cd315cfee61b2f9561dfcb4d
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1335
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
The linux kernel contains an SMI driver that was written by
me (Duncan) and upstreamed a couple years ago called GSMI.
This driver will format a parameter buffer and pass pointers
to this parameter buffer to the SMI handler. It uses this to
generate events for kernel shutdown reasons: Clean, Panic, Oops,
etc.
This function expects to be passed pointers into the SMM state
save area that correspond to the prameter buffer and the return
code, which are typically EAX and EBX.
The format of the parameter buffer is defined in the kernel
driver so we implement the same interface here in order to be
compatible.
GSMI_CMD_HANDSHAKE: this is an early call that it does to try
and detect what kind of BIOS is running.
GSMI_CMD_SET_EVENT_LOG: this contains a parameter buffer that
has event type and data. The kernel-specific events are
translated here and raw events are passed through as well which
allows any run-time event to be added for testing.
GSMI_CMD_CLEAR_EVENT_LOG: this command clears the event log.
First the gsmi driver must be enabled in the kernel with
CONFIG_GOOGLE_GSMI and then events can be added via sysfs
and events are automatically generated for various kernel
shutdown reasons.
These can be seen in the event log as the 'Kernel Event' type:
169 | 2012-06-23 15:03:04 | Kernl Event | Clean Shutdown
181 | 2012-06-23 16:26:32 | Kernl Event | Oops
181 | 2012-06-23 16:26:32 | Kernl Event | Panic
Change-Id: Ic0a3916401f0d9811e4aa8b2c560657dccc920c1
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1316
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
When fixing the SMM state table for SandyBridge/IvyBridge CPUs
the wrong table was used for older 64bit capable CPUs.
Change-Id: Ia7dff21aa3f0e5aa61575634fc839777de6bef10
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1353
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This is a temporary workaround so the SPI bus can be accessed
at runtime in SMM code until the SPI opcode menu is used
properly.
Change-Id: I93d188c55b66d8dce49fa91a1de53ee195944b30
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1318
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This is called from the SMI handler install because those
setup functions clear many of these registers.
Ensure that these events show up in the log as appropriate.
Example log output:
159 | 2012-06-23 14:31:54 | SUS Power Fail
160 | 2012-06-23 14:31:54 | System Reset
161 | 2012-06-23 14:31:54 | ACPI Wake | S5
Change-Id: I48c423c10ee7e6c2829bcc95f6cfabb4979c25a9
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1319
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
If a Chrome OS device is in developer mode log an event.
When the device is in recovery mode also log an event
and provide the recovery reason.
Enable developer mode and trigger recovery mode and
verify that the events are logged:
238 | 2012-06-23 17:31:56 | Chrome OS Developer Mode
239 | 2012-06-23 17:31:56 | Chrome OS Recovery Mode | User Requested from Developer Screen
Change-Id: I14d41f44e04fd91340569617c7314da7e35a154f
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1321
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
On both SandyBridge and IvyBridge BCLK is fixed at 100MHz. Have the
comment reflect that.
Change-Id: Ia81c3501dc3e68cf3143c3bc864dfbf88901f9f9
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1336
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
.. in case the system has pluggable CPUs or might come in different SKUs.
Change-Id: I7a7cd95b4de5dd78370355f448688e8d000434c1
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1333
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This is for GfxInitSview(GnbSview.c). It would create warning message if it
could not get VBIOS image.
Change-Id: I3b2726f612b4b7a237644a4b63b56efad52b7ab5
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1351
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The default return value should be AGESA_SUCCESS, which is zero. If it was set as TRUE,
the AGESA wrapper would think it was AGESA_UNSUPPORTED. That would make no sense. And it
would produce ASSERT warning in AGESA wrapper.
On my parmer board, with Engine sample processor, it can not create the correct DMI table.
Routine initlate will return AGESS_ERROR.
------Serial message---------
ASSERTION FAILED: file 'src/mainboard/amd/parmer/agesawrapper.c', line 427
DmiTable:100123c3, AcpiPstatein: 10010126, AcpiSrat:0,AcpiSlit:0, Mce:100111ba, Cmc:1001127c,Alib:1001ccd4, AcpiIvrs:0 in agesawrapper_amdinitlate
agesawrapper_amdinitlate failed: 5
-----------------------------
I believe the processor with acceptable name string will create the right DMI.
Change-Id: Ie86955cf9affffc964a7c9f4a2c63077ef2030de
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1350
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Remove the warning message from linux dmesg,
mtrr: your BIOS has configured as incorrect mask, fixing it.
Change-Id: I355509db12ab10c33b7c1c23e2c7c4783f30e67e
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1349
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2048 * ONE_MB will cause warning,
src/northbridge/amd/agesa/family15tn/northbridge.c:667:50: warning: integer overflow in expression [-Woverflow]
I guess it will change the data type to signed integer.
I think the bit shifting is better.
Change-Id: I823f7ead1f7d622bf653cb3bf2ae2343f5e76805
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1263
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This function is exported so it can be used in other
places that need similar relocation due to TSEG.
Change-Id: I68b78ca32d58d1a414965404e38d71977c3da347
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1310
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Date and time are mixed up:
microcode: updated to revision 0x12 date=2012-12-04
should be
microcode: updated to revision 0x12 date=2012-04-12
Change-Id: I85f9100f31d88bb831bef07131f361c92c7ef34e
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1334
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
This patch extends the current smbios api to allow changing mainboard
serial and version during coreboot runtime. This is helpful if you
have an EEPROM etc. to access these informations and want to add
some quirks for broken hardware revision for the linux kernel.
This could be done via DMI_MATCH marco.
Change-Id: I1924a56073084e965a23e47873d9f8542070423c
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-on: http://review.coreboot.org/1232
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
coreboot used to pass some information to u-boot in the coreboot table
and other information in a modified flat device tree. Since the FDT code
was never upstreamed and removed from our tree, u-boot was changed to
get the information it needs from the coreboot table alone. However,
in the process of this change only the vboot shared data structure was
passed on by coreboot, so when u-boot tried to update the ChromeOS
specific ACPI entries, it would accidently overwrite the vboot data.
This patch passes on the ChromeOS specific ACPI data structure instead
of the vboot shared data. Another change to u-boot will teach it how
to get to the vboot shared data from there.
Change-Id: Ifbb64eafc0d9967887b4cdeebf97d0c4ce019290
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1282
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
The LAPIC timer is running at BCLK (100MHz) on Sandy Bridge and Ivy
Bridge systems. However, the current timer code assumed that the clock
would run at 200MHz instead. This made all delays twice as long as
needed.
Change-Id: I41b1186daee11cfd9a25b3a9d5ebdeeb271293c7
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1330
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
This maintains a 32bit monotonically increasing boot counter
that is stored in CMOS and logged on every non-S3 boot when
the event log is initialized.
In CMOS the count is prefixed with a 16bit signature and
appended with a 16bit checksum.
This counter is incremented in sandybridge early_init which is
called by romstage. It is incremented early in order notice
when reboots happen after memory init.
The counter is then logged when ELOG is initialized and will
store the boot count as part of a 'System boot; event.
Reboot a few times and look for 'System boot' events in the
event log and check that they are increasing. Also verify
that the counter does NOT increase when resuming from S3.
171 | 2012-06-23 16:02:55 | System boot | 285
176 | 2012-06-23 16:26:00 | System boot | 286
182 | 2012-06-23 16:27:04 | System boot | 287
189 | 2012-06-23 16:31:10 | System boot | 288
Change-Id: I23faeafcf155edfd10aa6882598b3883575f8a33
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1315
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This standared SMBIOS 0able describes the location and format
of the event log to the OS and applications. In this case the
pointer is a 32bit physical address pointer to the log in
memory mapped flash.
Look for SMBIOS type15 entry with 'dmidecode -t 15'
Handle 0x0004, DMI type 15, 23 bytes
System Event Log
Area Length: 4095 bytes
Header Start Offset: 0x0000
Header Length: 8 bytes
Data Start Offset: 0x0008
Access Method: Memory-mapped physical 32-bit address
Access Address: 0xFFB6F000
Status: Valid, Not Full
Change Token: 0x00000000
Header Format: OEM-specific
Supported Log Type Descriptors: 0
Change-Id: I1e7729e604000f197e26e69991a2867e869197a6
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1314
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
MRC returns specific error codes; print the according error
message if we know what it means.
Change-Id: Iaaf1512b9d577d4291fccfb94d879043ab5b11b5
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1289
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This was introduced when porting the SPI driver over from u-boot but it
is not needed. Hence drop the extra typedef and use device_t instead.
Change-Id: I3ab797a8e482d1c9aa1d004e488e99aeaffcdd8b
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1331
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
The count was only incrementing for a wake from S5 and
it was not incrementing in the normal reboot case.
Change-Id: I73bc6db6bd02e6c4677f7e44a5c098c6dcb51747
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/1328
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
MCHBAR 0x5f10[7:0] should be set to 0x30 for ivybridge
and 0x20 for sandybridge. Move this code to ramstage
and set it per-chipset.
Power Aware Interrupt Routing is supported in ivybridge,
enable it and set fixed priority.
Boot on ivybridge device and read MCHBAR 0x5f10:
mmio_read8 0xfed15f10
0x30
And verify PAIR is enabled (bit4=1):
mmio_read8 0xfed15418
0x24
Change-Id: If017d5ce2bd5ab5092c86f657434f2b645ee6613
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1303
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
CPUs with configurable TDP will run the TSC at the max non-turbo
ratio for the maximum TDP value, which can cause issues if another
TDP is desired. To deal with this we set the flex ratio to the
nominal TDP ratio early in the boot and then configure the Soft
Reset Data registers so the PCH can tell the CPU what frequency
to run at after a reset.
This is done very early in the bootblock because it is necessary
to reset the system after setting a flex ratio.
The end result is that the TSC will now increment at the max
non-turbo frequency for the nominal TDP.
On some system with 1.8GHz CPU ensure that the kernel
detects the CPU speed as ~1800mhz rather than ~2300mhz:
> dmesg | grep "MHz processor"
[ 0.004000] Detected 1795.801 MHz processor.
Change-Id: I8436dced9199003b6423186a2b041e3f7b84ab8c
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/1329
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
There are enough differences that it is worth defining the
proper map for the sandybridge/ivybridge CPUs. The state
save map was not being addressed properly for TSEG and
needs to use the right offset instead of pointing in ASEG.
To do this properly add a required southbridge export to
return the TSEG base and use that where appropriate.
Change-Id: Idad153ed6c07d2633cb3d53eddd433a3df490834
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1309
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
- add Kconfig option for CONFIG_SPI_FLASH_SMM
- compile subsystem and chip drivers for smm if enabled
- change mdelay(1) to udelay(500) since mdelay is not defined
in SMM and a 1ms delay is worth avoiding
- make flash chip structure non-const so the probe function
pointers can be relocated for use in TSEG
- Make SMM PCI access possible in southbridge SPI code
Change-Id: Icfcbbe8e4e56658769d46af0b5bf6c79a6432641
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1313
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This is used by the SPI driver and ELOG.
It requires SMM TSEG and a _heap/_eheap region defined in the
linker script. The first time malloc is called in SMM the
start and end pointers to the heap region will be relocated
for the TSEG region.
Enable SPI flash and ELOG in SMM and successfully
allocate memory. The allocated addresses are verified
to be sure they are within the TSEG heap region:
smm.elf:00014000 B _eheap
smm.elf:00010000 B _heap
TSEG base is 0xad000000
Memory allocated in ELOG:
ELOG: MEM @0xad018030
Change-Id: I5cca38e4888d597cbbfcd9983cd6a7ae3600c2a3
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1312
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This is based around the SMBIOS event log specification but
expanded with OEM event types to support more specific and
relevant system events.
It requires flash storage and a minimum 4K block (or flash block
size) that should be allocated in the FMAP.
A copy of the event log is maintained in memory for convenience
and speed and the in-memory copy is written to flash at specific
points.
The log is automatically shunk when it reaches a configurable
full threshold in order to not get stuck with a full log that
needs OS help to clear.
ELOG implements the specification published here:
http://code.google.com/p/firmware-event-log/wiki/FirmwareEventLogDesign
And is similar to what we use in other firmware at Google.
This implementation does not support double-buffered flash
regions. This is done because speed is valued over the log
reliability and it keeps the code simpler for the first version.
This is a large commit and by itself it just provides a new
driver that is made available to coreboot. Without additional
patches it is not very useful, but the end result is an event
log that will contain entries like this:
171 | 2012-06-23 16:02:55 | System boot | 285
172 | 2012-06-23 16:02:55 | EC Event | Power Button
173 | 2012-06-23 16:02:55 | SUS Power Fail
174 | 2012-06-23 16:02:55 | System Reset
175 | 2012-06-23 16:02:55 | ACPI Wake | S5
Change-Id: I985524c67f525c8a268eccbd856c1a4c2a426889
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1311
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
In order to support SPI and ELOG drivers the SMM region
needs to be able to be larger than the previous allocation
below 0x7400. Now that we have support for 4M TSEG we do
not need to live in this region.
This change adds a 16KB heap region abofe the save state area
at TSEG+64KB and moves the C handler above this.
The heap region is then available for malloc and the C handler
can grow to support flash and event log features.
While updating the memory map comment in assembly stub I also
added a pause instruction to the cpu spin lock as this was
added to the C code in latest upstream rebase.
Dump sympbols from smm.elf binary to see the new regions:
00010000 B _heap
00014000 B _eheap
00014000 T _smm_c_handler_start
0001b240 T _smm_c_handler_end
Change-Id: I45f0ab4df1fdef3b626f877094a58587476ac634
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1308
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The BWG says ivybridge current limit for PP1 is 50A.
Verify the PP1 current limit value on link device:
> echo $(( ( $(rdmsr 0 0x602) & 0x1fff ) >> 3 ))
50
Change-Id: I946269d21ef605f2525fe03993f569d69128294b
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1305
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Ivybridge B0+ CPUs are capable of supporting multiple TDP levels.
This complicates the default case because now the registers that
were reporting max non-turbo ratio are reporting that value for
the highest possible TDP level.
For now this change just forces everything to use the Nominal TDP
values instead of the higher (or lower) levels.
- When building P-state tables, determine the P[1] (max non turbo)
ratio based on the Nominal ratio if available.
- Set the turbo activation ratio to the Nominal max ratio.
- Mirror the power level settings in new MCHBAR register after
they are written, which happens after BIOS_RESET_CPL is set.
- Set the current ratio to Nominal ratio at boot.
1) Verify that P-state table is generated properly with
P[0]=1801MHz (ratio 0x1C) and P[1]=1800MHz (ratio 0x12)
PSS: 1801MHz power 17000 control 0x1c00 status 0x1c00
PSS: 1800MHz power 17000 control 0x1200 status 0x1200
2) Verify power limits in MCHBAR match PKG_POWER_LIMIT:
> rdmsr 0 0x610
0x800080aa00dc8088
> mmio_read32 0xfed159a4
0x000080aa
> mmio_read32 0xfed159a0
0x00dc8088
3) Verify turbo activation ratio is set to nominal ratio:
> rdmsr 0 0x64c
0x0000000000000012
4) Check that proper ratio was set at boot on one core only:
> grep 'frequency set to' /sys/firmware/log
model_x06ax: frequency set to 1800
model_x06ax: frequency set to 1800
model_x06ax: frequency set to 1800
model_x06ax: frequency set to 1800
Change-Id: I592e60a7740f31b140986a8269dca91b4adbb270
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1304
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Duncan Laurie