coreboot.git - my copy of coreboot

Age	Commit message (Collapse)	Author
2020-12-06	soc/amd: factor out common family 17h&19h TSC and monotonic timer code	Felix Held
	The corresponding MSRs of all AMD family 17h and 19h CPUs/APUs match the code. Change-Id: I29cfef5d8920c29e36c55fc46a90eb579a042b64 Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/48305 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
2020-11-22	soc/amd: move non-CAR linker scripts to common directory	Felix Held
	AMD family 17h and newer don't use cache as RAM, since the RAM is already initialized by the PSP when the x86 cores are released from reset. Therefore they use a different linker script as the rest of the x86 chips in coreboot do. Since there will be support for newer generations than Picasso will be added, move those linker scripts from soc/amd/picasso to soc/amd/common/block/cpu/noncar. TEST=Timeless build of amd/mandolin and amd/gardenia result in identical binaries. Change-Id: Ie60372aa498b6e505708f97213b502c9d0b3534b Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47828 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
2020-11-09	soc/amd/common: add Kconfig help text to pre-family-17h-only blocks	Felix Held
	The cpu/car code only applies to pre-family-17h CPUs that still use cache as RAM (CAR) and the PI code only applies to the pre-FSP vendor code blob binaryPI interface. Change-Id: I5a13d7e202bb745255fabb46110850c36b07de7a Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47274 Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2017-09-27	soc/amd/stoneyridge: Revert CAR teardown wbinvd	Marshall Dawson
	Change the cache-as-ram teardown to use invd instead of wbinvd. Save the return and recover the call's return address in chipset_teardown_car. CAR teardown had been modified to use wbinvd to send CAR contents to DRAM backing prior to teardown. This allowed CAR variables, stack, and local variables to be preserved while running the AMD_DISABLE_STACK macro. Using the wbinvd instruction has the side effect of sending all dirty cache contents to DRAM and not only our CAR data. This would likely cause corruption, e.g. during S3 resume. Stoney Ridge now uses a postcar stage and this is no longer a requirement. BUG=b:64768556 Change-Id: I8e6bcb3947f508b1db1a42fd0714bba70074837a Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-on: https://review.coreboot.org/20967 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2017-07-27	soc/amd/common: Convert to C_ENVIRONMENT_BOOTBLOCK	Marshall Dawson
	Add dedicated CAR setup and teardown functions and Kconfig options to force their inclusion into the build. The .S files are mostly duplicated code from the old cache_as_ram.inc file. The .S files use global proc names in anticipation for use with the Kconfig symbols C_ENVIRONMENT_BOOTBLOCK and POSTCAR_STAGE. Move the mainboard romstage functionality into the soc directory and change the function name to be compatible with the call from assembly_entry.S. Drop the BIST check like other devices. Move InitReset and InitEarly to bootblock. These AGESA entry points set some default settings, and release/recapture the AP cores. There are currently some early dependencies on InitReset. Future work should include: * Pull the necessary functionality from InitReset into bootblock * Move InitReset and InitEarly to car_stage_entry() and out of bootblock - Add a mechanism for the BSP to give the APs an address to call and skip most of bootblock and verstage (when available) (1) - Reunify BiosCallOuts.c and OemCustomize.c (1) During the InitReset call, the BSP enables the APs by setting core enable bits in F18F0x1DC and APs begin fetching/executing from the reset vector. The BSP waits for all APs to also reach InitReset, where they enter an endless loop. The BSP sends a command to them to execute a HLT instruction and the BSP eventually returns from InitReset. The goal would be to preserve this process but prevent APs from rerunning early code. Change-Id: I811c7ef875b980874f3c4b1f234f969ae5618c44 Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-on: https://review.coreboot.org/19755 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Martin Roth <martinroth@google.com>