diff options
Diffstat (limited to 'src/soc/intel/xeon_sp/cpx/acpi.c')
| -rw-r--r-- | src/soc/intel/xeon_sp/cpx/acpi.c | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/src/soc/intel/xeon_sp/cpx/acpi.c b/src/soc/intel/xeon_sp/cpx/acpi.c index 494fa958e9..b9e261e8e4 100644 --- a/src/soc/intel/xeon_sp/cpx/acpi.c +++ b/src/soc/intel/xeon_sp/cpx/acpi.c @@ -25,11 +25,41 @@ #include "chip.h" -#define SCI_INT_NUM 9 +static int acpi_sci_irq(void) +{ + int sci_irq = 9; + uint32_t scis; + + scis = soc_read_sci_irq_select(); + scis &= SCI_IRQ_SEL; + scis >>= SCI_IRQ_ADJUST; + + /* Determine how SCI is routed. */ + switch (scis) { + case SCIS_IRQ9: + case SCIS_IRQ10: + case SCIS_IRQ11: + sci_irq = scis - SCIS_IRQ9 + 9; + break; + case SCIS_IRQ20: + case SCIS_IRQ21: + case SCIS_IRQ22: + case SCIS_IRQ23: + sci_irq = scis - SCIS_IRQ20 + 20; + break; + default: + printk(BIOS_DEBUG, "Invalid SCI route! Defaulting to IRQ9.\n"); + sci_irq = 9; + break; + } + + printk(BIOS_DEBUG, "SCI is IRQ%d\n", sci_irq); + return sci_irq; +} static unsigned long acpi_madt_irq_overrides(unsigned long current) { - int sci = SCI_INT_NUM; + int sci = acpi_sci_irq(); uint16_t flags = MP_IRQ_TRIGGER_LEVEL; /* INT_SRC_OVR */ @@ -103,7 +133,8 @@ void acpi_fill_fadt(acpi_fadt_t *fadt) const uint16_t pmbase = ACPI_BASE_ADDRESS; fadt->header.revision = get_acpi_table_revision(FADT); - fadt->sci_int = SCI_INT_NUM; + + fadt->sci_int = acpi_sci_irq(); fadt->pm1a_evt_blk = pmbase + PM1_STS; fadt->pm1a_cnt_blk = pmbase + PM1_CNT; |