diff options
| author | Marshall Dawson <marshalldawson3rd@gmail.com> | 2019-06-19 12:29:23 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2019-09-09 22:20:08 +0000 |
| commit | 80d0b01b38049775750c14cb0e0d978afb780ca1 (patch) | |
| tree | 5290bc63262096e92359fc2319077ab748f8120f /src/soc/amd/picasso/Kconfig | |
| parent | ba2533f0ee952a2bbe90ed60d5ab3d4c19513aa0 (diff) | |
soc/amd/picasso: Update TSC and monotonic timer
Picasso's TimeStamp Counter is a new design and different than
Stoney Ridge. Although advertised as invariant, the ST TSC did
not become so until midway through POST making it an unreliable
source for measuring time. This is not the case for Picasso.
Remove the Stoney Ridge monotonic timer code and rely on the TSC.
Modify the calculation used in Family 15h of finding the number
of boost states first, and get the frequency directly out of the
Pstate0 register.
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Change-Id: I909743483309279eb8c3bf68852d6082381f0dff
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33765
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Diffstat (limited to 'src/soc/amd/picasso/Kconfig')
| -rw-r--r-- | src/soc/amd/picasso/Kconfig | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/src/soc/amd/picasso/Kconfig b/src/soc/amd/picasso/Kconfig index 26b2ec4302..b3ee50c97d 100644 --- a/src/soc/amd/picasso/Kconfig +++ b/src/soc/amd/picasso/Kconfig @@ -29,14 +29,15 @@ config CPU_SPECIFIC_OPTIONS select X86_AMD_FIXED_MTRRS select X86_AMD_INIT_SIPI select ACPI_AMD_HARDWARE_SLEEP_VALUES - select COLLECT_TIMESTAMPS_NO_TSC select DRIVERS_I2C_DESIGNWARE select GENERIC_GPIO_LIB - select GENERIC_UDELAY select IOAPIC select HAVE_USBDEBUG_OPTIONS select SPI_FLASH if HAVE_ACPI_RESUME + select TSC_CONSTANT_RATE + select TSC_MONOTONIC_TIMER select TSC_SYNC_LFENCE + select UDELAY_TSC select COLLECT_TIMESTAMPS select SOC_AMD_PI select SOC_AMD_COMMON @@ -66,10 +67,6 @@ config VBOOT select VBOOT_VBNV_CMOS select VBOOT_VBNV_CMOS_BACKUP_TO_FLASH -config UDELAY_LAPIC_FIXED_FSB - int - default 200 - config HAVE_BOOTBLOCK bool default n |