Stefan Reinauer ([email protected]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1769
-gerrit commit fc56f2a432a42f33b3b3d33782656cb764bbd02d Author: Duncan Laurie <[email protected]> Date: Wed Oct 3 19:23:11 2012 -0700 ACPI: Zero pstate/cstate control values in FADT If these values are non-zero then the kernel will issue an SMI for each core (cstate) and package (pstate). Since we don't do anything with these SMI callbacks we can avoid taking the extra SMIs at boot time by zeroing these fields. Change-Id: I3bc5fe0a9f45141d46884cb77ecdfaeaa45d2439 Signed-off-by: Duncan Laurie <[email protected]> --- src/mainboard/intel/emeraldlake2/fadt.c | 4 ++-- src/mainboard/samsung/lumpy/fadt.c | 4 ++-- src/mainboard/samsung/stumpy/fadt.c | 4 ++-- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/src/mainboard/intel/emeraldlake2/fadt.c b/src/mainboard/intel/emeraldlake2/fadt.c index ff840c0..315cb58 100644 --- a/src/mainboard/intel/emeraldlake2/fadt.c +++ b/src/mainboard/intel/emeraldlake2/fadt.c @@ -47,7 +47,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt) fadt->acpi_enable = APM_CNT_ACPI_ENABLE; fadt->acpi_disable = APM_CNT_ACPI_DISABLE; fadt->s4bios_req = 0x0; - fadt->pstate_cnt = APM_CNT_PST_CONTROL; + fadt->pstate_cnt = 0; fadt->pm1a_evt_blk = pmbase; fadt->pm1b_evt_blk = 0x0; @@ -65,7 +65,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt) fadt->gpe0_blk_len = 16; fadt->gpe1_blk_len = 0; fadt->gpe1_base = 0; - fadt->cst_cnt = APM_CNT_CST_CONTROL; + fadt->cst_cnt = 0; fadt->p_lvl2_lat = 1; fadt->p_lvl3_lat = 87; fadt->flush_size = 1024; diff --git a/src/mainboard/samsung/lumpy/fadt.c b/src/mainboard/samsung/lumpy/fadt.c index 6d78233..510b765 100644 --- a/src/mainboard/samsung/lumpy/fadt.c +++ b/src/mainboard/samsung/lumpy/fadt.c @@ -47,7 +47,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt) fadt->acpi_enable = APM_CNT_ACPI_ENABLE; fadt->acpi_disable = APM_CNT_ACPI_DISABLE; fadt->s4bios_req = 0x0; - fadt->pstate_cnt = APM_CNT_PST_CONTROL; + fadt->pstate_cnt = 0; fadt->pm1a_evt_blk = pmbase; fadt->pm1b_evt_blk = 0x0; @@ -65,7 +65,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt) fadt->gpe0_blk_len = 16; fadt->gpe1_blk_len = 0; fadt->gpe1_base = 0; - fadt->cst_cnt = APM_CNT_CST_CONTROL; + fadt->cst_cnt = 0; fadt->p_lvl2_lat = 1; fadt->p_lvl3_lat = 87; fadt->flush_size = 1024; diff --git a/src/mainboard/samsung/stumpy/fadt.c b/src/mainboard/samsung/stumpy/fadt.c index ff840c0..315cb58 100644 --- a/src/mainboard/samsung/stumpy/fadt.c +++ b/src/mainboard/samsung/stumpy/fadt.c @@ -47,7 +47,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt) fadt->acpi_enable = APM_CNT_ACPI_ENABLE; fadt->acpi_disable = APM_CNT_ACPI_DISABLE; fadt->s4bios_req = 0x0; - fadt->pstate_cnt = APM_CNT_PST_CONTROL; + fadt->pstate_cnt = 0; fadt->pm1a_evt_blk = pmbase; fadt->pm1b_evt_blk = 0x0; @@ -65,7 +65,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt) fadt->gpe0_blk_len = 16; fadt->gpe1_blk_len = 0; fadt->gpe1_base = 0; - fadt->cst_cnt = APM_CNT_CST_CONTROL; + fadt->cst_cnt = 0; fadt->p_lvl2_lat = 1; fadt->p_lvl3_lat = 87; fadt->flush_size = 1024; -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
