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soc/intel/apollolake: Disable monitor mwait 

The monitor/mwait is broken on Apollolake. So use ACPI legacy
mwait IO redirection as a work around

BUG=chrome-os-partner:55110

Change-Id: I2e1834130d9586b4310466d3549d19bf427ffe24
Signed-off-by: Bora Guvendik <bora.guvendik@intel.com>
Reviewed-on: https://review.coreboot.org/15890
Tested-by: build bot (Jenkins)
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Bora Guvendik 2016-07-25 14:44:51 -07:00 committed by Andrey Petrov
parent 46114517d7
commit 60cc75df83
1 changed files with 3 additions and 0 deletions
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src/soc/intel/apollolake/chip.c
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@ -394,6 +394,9 @@ void platform_fsp_silicon_init_params_cb(struct FSPS_UPD *silupd)
silconfig->LPSS_S0ixEnable = cfg->lpss_s0ix_enable;
/* Disable monitor mwait since it is broken due to a hardware bug without a fix */
silconfig->MonitorMwaitEnable = 0;
/* Disable setting of EISS bit in FSP. */
silconfig->SpiEiss = 0;
}