diff options
Diffstat (limited to 'src/soc/intel/common')
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/lpc_lib.h | 6 | ||||
| -rw-r--r-- | src/soc/intel/common/block/lpc/lpc_lib.c | 18 |
2 files changed, 24 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/include/intelblocks/lpc_lib.h b/src/soc/intel/common/block/include/intelblocks/lpc_lib.h index 52b0ff8e72..b04df76844 100644 --- a/src/soc/intel/common/block/include/intelblocks/lpc_lib.h +++ b/src/soc/intel/common/block/include/intelblocks/lpc_lib.h @@ -109,5 +109,11 @@ void pch_lpc_add_new_resource(struct device *dev, uint8_t offset, void pch_enable_ioapic(void); /* Retrieve and setup PCH LPC interrupt routing. */ void pch_pirq_init(void); +/* + * LPC MISC programming + * 1. Setup NMI on errors, disable SERR + * 2. Disable NMI sources + */ +void pch_misc_init(void); #endif /* _SOC_COMMON_BLOCK_LPC_LIB_H_ */ diff --git a/src/soc/intel/common/block/lpc/lpc_lib.c b/src/soc/intel/common/block/lpc/lpc_lib.c index d189a5e398..67dd661460 100644 --- a/src/soc/intel/common/block/lpc/lpc_lib.c +++ b/src/soc/intel/common/block/lpc/lpc_lib.c @@ -386,3 +386,21 @@ void pch_pirq_init(void) pci_write_config8(PCI_BDF(irq_dev), PCI_INTERRUPT_LINE, int_line); } } + +#define PPI_PORT_B 0x61 +#define SERR_DIS (1 << 2) +#define CMOS_NMI 0x70 +#define NMI_DIS (1 << 7) + +/* LPC MISC programming */ +void pch_misc_init(void) +{ + uint8_t reg8; + + /* Setup NMI on errors, disable SERR */ + reg8 = (inb(PPI_PORT_B)) & 0xf0; + outb((reg8 | SERR_DIS), PPI_PORT_B); + + /* Disable NMI sources */ + outb(NMI_DIS, CMOS_NMI); +} |