Fixes spurious SMI crashes i've seen, and ACPI/SMM interaction.
For reference, the mail i've sent to ML with the bugreport:
whenever i've docked/undocked the thinkpad from the docking station,
i had to do that twice to get the action actually to happen.
First i thought that would be some error in the ACPI code. Here's a
short explanation how docking/undocking works:
1) ACPI EC Event 0x37 Handler is executed (EC sends event 0x37 on dock)
2) _Q37 does a Trap(SMI_DOCK_CONNECT). Trap is declared as follows:
a) Store(Arg0, SMIF) // SMIF is in the GNVS Memory Range
b) Store(0, 0x808) // Generates I/O Trap to SMM
c) // SMM is executed
d) Return (SMIF) // Return Result in SMIF
I've verified that a) is really executed with ACPI debugging in the
Linux Kernel. It writes the correct value to GNVS Memory. After that,
i've logged the SMIF value in SMM, which contains some random (or
former) value of SMIF.
So i've added the GNVS area to /proc/mtrr which made things work.
I've also tried a wbinvd() in SMM code, with the same result.
After reading the src/cpu/x86/smm/smmhandler.S code, i've recognized
that it starts with:
movw $(smm_gdtptr16 - smm_handler_start +
SMM_HANDLER_OFFSET), %bx
data32 lgdt %cs:(%bx)
movl %cr0, %eax
andl $0x7FFAFFD1, %eax /* PG,AM,WP,NE,TS,EM,MP = 0 */
orl $0x60000001, %eax /* CD, NW, PE = 1 */
movl %eax, %cr0
/* Enable protected mode */
data32 ljmp $0x08, $1f
...which disables caching in SMM code, but doesn't flush the cache.
So the problem is:
- the linux axpi write to the SMIF GNVS Area will be written to Cache,
because GNVS is WB
- the SMM code runs with cache disabled, and fetches SMIF directly from
Memory, which is some other value
Possible Solutions:
- enable cache in SMM (yeah, cache poisoning...)
- flush caches in SMM (really expensive)
- mark GNVS as UC in Memory Map (will only work if OS
really marks that Area as UC. Checked various vendor BIOSes, none
of them are marking NVS as UC. So this seems rather uncommon.)
- flush only the cache line which contains GNVS. Would fix this
particular problem, but users/developers could see other Bugs like
this. And not everyone likes to debug such problems. So i won't like
this solution.
Change-Id: Ie60bf91c5fd1491bc3452d5d9b7fc8eae39fd77a
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/39
Tested-by: build bot (Jenkins)
The docking takes place in romstage to have early serial I/O for debugging.
But to keep romstage small and prevent linking the EC code to romstage, set the
status LED's in ramstage.
Change-Id: I89fadbd61b6bfd9aff8c22370e51c84325f24751
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/42
Tested-by: build bot (Jenkins)
Can be used to disable/enable Power output on USB ports.
Change-Id: I5eb52b33c9e3359b0e5874bda2c0c8d75c196bc2
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/37
Tested-by: build bot (Jenkins)
Overwriting the SMM Area on resume leaves us with
all variables cleared out, i.e., the GNVS pointer
is no longer available, which makes SMIF function
calls impossible.
Change-Id: I08ab4ffd41df0922d63c017822de1f89a3ff254d
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/34
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
it isn't used anywhere, and could be fetched from git/svn history if
needed.
Change-Id: Iaa2ba39af531d0389d7ab1110263ae7ecaa35c70
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/35
Tested-by: build bot (Jenkins)
We're using '0xcafed00d' all over the code as magic for ACPI S3
resume. Let's add a define for that. Also replace 0xcafebabe by
a define.
Change-Id: I5f5dc09561679d19f98771c4f81830a50202c69f
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/33
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
The handler should return 1 if it handled the request. The current
code returns 0, which causes 'Unknown function' logs.
Change-Id: Ic296819a5f8c6f1f97b7d47148182226684882a0
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/29
Tested-by: build bot (Jenkins)
Seabios doesn't have this support included yet,
which causes the generic Persimmon and other CIMx
sb800 platforms to not boot.
Change-Id: If07328b7c62d7fc314647adce8fab983ed327854
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: http://review.coreboot.org/14
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
This option is PMH7 specific, and should be moved there,
so all Notebook utilizing a PMH7 have this option.
For Thinkpads without Touchpad (like the X60), simply
don't add 'touchpad' to cmos.layout.
Change-Id: Icdd0093670d565f1b16e2483aa286f4d63ccc52a
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/6
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
disabling ACPI during S3 wakeup breaks ACPI wakeup, as the
Host OS is assuming that ACPI is enabled.
Change-Id: I8ced72c4b553d41a57f26d64998118e8a77621f8
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/7
Tested-by: build bot (Jenkins)
in the current code, the defines for the APM_CNT (0xb2) register
are duplicated in almost every place where it is used. define those
values in cpu/x86/smm.h, and only include this file.
And while at it, fixup whitespace.
Change-Id: Iae712aff53322acd51e89986c2abf4c794e25484
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/4
Tested-by: build bot (Jenkins)
Code used 'int' as return type, but the cmos option is only one
bit. get_option returned with the value in bit 0-7, but all remaining
bits were left unitialized by get_option(). fix this by using char
as type.
Change-Id: I60e609164277380f936f66c99ef9508fa6a6b67c
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/5
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
motherboards can use this hook to get notified if someone writes
to the APM_CNT port (0xb2). If the hook returns 1, the chipset
specific hook is also skipped.
Change-Id: I05f1a27cebf9d25db8064f2adfd2a0f5759e48b5
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/3
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
Enable rom cache early to reduce boot time.
Signed-off-by: Marshall Buschman <mbuschman@lucidmachines.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6633 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Fix memory allocation problem in amdInitLate. Disabled until further debug.
Signed-off-by: Marshall Buschman <mbuschman@lucidmachines.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6632 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Declare legacy video frame buffer so that Windows generic VGA driver will work.
Signed-off-by: Marshall Buschman <mbuschman@lucidmachines.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6630 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Declare RTC as not PIIX4 compatible to match AMD hardware.
Signed-off-by: Marshall Buschman <mbuschman@lucidmachines.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6629 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Make fadt revision match its length. Solves Windows 7 checked build assert.
Signed-off-by: Marshall Buschman <mbuschman@lucidmachines.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6628 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Remove multiple mmconf settings and just use kconfig setting.
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6624 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
1) Set I/O APIC ID according to BKDG recommendation
2) Correct I/O APIC ID reported by mptable
Signed-off-by: Marshall Buschman <mbuschman@lucidmachines.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6621 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
During the hackathon in Prague we discovered that romcc has a problem
compiling the previous nested if() statements correctly. This patch
makes the code a little simpler, and indeed works around the romcc issue.
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6620 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Signed-off-by: Marc Jones <marcj303@gmail.com>
Acked-by: Scott Duplichan <scott@notabs.org>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6619 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
With the K8T800/M800 patch from r6367 the PCI IDs for the VIA chrome were
moved to pci_ids.h. The PCI ID for K8M890 chrome was copied incorrectly.
(3220 instead of 3230). This patch defines the correct PCI ID for this device.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6618 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
src/southbridge/amd/cimx_wrapper/sb800/late
call clear_ioapic but not include the prototype declare header file.
Signed-off-by: Kerry She <kerry.she@amd.com>
Acked-by: Marc Jones <marcj303@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6613 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
(.align actually takes its argument in bytes)
Signed-off-by: Jonathan Kollasch <jakllsch@kollasch.net>
Acked-by: Jonathan Kollasch <jakllsch@kollasch.net>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6610 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Sven Schnelle