Stefan Reinauer ([email protected]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1769
-gerrit commit da84f7216fe833d80b3729874f494b8bd813fbb5 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
