From 847043c2074e855e48f820fbc193a2c860827e1b Mon Sep 17 00:00:00 2001 From: Marc Jones Date: Wed, 2 Dec 2020 11:24:00 -0700 Subject: soc/intel/common/block/acpi: Add soc MADT IOAPIC hook Add a hook for SOCs to provide an IOAPIC MADT table. If the SOC doesn't provide a table then a standard setting is used. Change-Id: Ic818a634e4912d88ef93971deb4da5ab708c9020 Signed-off-by: Marc Jones Reviewed-on: https://review.coreboot.org/c/coreboot/+/48246 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber Reviewed-by: Jay Talbott Reviewed-by: Furquan Shaikh --- src/soc/intel/common/block/acpi/acpi.c | 23 +++++++++++++++++++++- .../intel/common/block/include/intelblocks/acpi.h | 12 +++++++++++ 2 files changed, 34 insertions(+), 1 deletion(-) (limited to 'src/soc/intel') diff --git a/src/soc/intel/common/block/acpi/acpi.c b/src/soc/intel/common/block/acpi/acpi.c index a6c626f682..934a92f7c5 100644 --- a/src/soc/intel/common/block/acpi/acpi.c +++ b/src/soc/intel/common/block/acpi/acpi.c @@ -86,13 +86,34 @@ static unsigned long acpi_madt_irq_overrides(unsigned long current) return current; } +__weak const struct madt_ioapic_info *soc_get_ioapic_info(size_t *entries) +{ + *entries = 0; + return NULL; +} + unsigned long acpi_fill_madt(unsigned long current) { + const struct madt_ioapic_info *ioapic_table; + size_t ioapic_entries; + /* Local APICs */ current = acpi_create_madt_lapics(current); /* IOAPIC */ - current += acpi_create_madt_ioapic((void *)current, 2, IO_APIC_ADDR, 0); + ioapic_table = soc_get_ioapic_info(&ioapic_entries); + if (ioapic_entries) { + for (int i = 0; i < ioapic_entries; i++) { + current += acpi_create_madt_ioapic( + (void *)current, + ioapic_table[i].id, + ioapic_table[i].addr, + ioapic_table[i].gsi_base); + } + } else { + /* Default SOC IOAPIC entry */ + current += acpi_create_madt_ioapic((void *)current, 2, IO_APIC_ADDR, 0); + } return acpi_madt_irq_overrides(current); } diff --git a/src/soc/intel/common/block/include/intelblocks/acpi.h b/src/soc/intel/common/block/include/intelblocks/acpi.h index cd3a309c21..d76d95ab11 100644 --- a/src/soc/intel/common/block/include/intelblocks/acpi.h +++ b/src/soc/intel/common/block/include/intelblocks/acpi.h @@ -68,4 +68,16 @@ void soc_power_states_generation(int core_id, int cores_per_package); */ int common_calculate_power_ratio(int tdp, int p1_ratio, int ratio); +struct madt_ioapic_info { + u8 id; + u32 addr; + u32 gsi_base; +}; + +/* + * Returns a table of MADT ioapic_info entries and the number of entries + * If the SOC doesn't implement this hook a default ioapic setting is used. + */ +const struct madt_ioapic_info *soc_get_ioapic_info(size_t *entries); + #endif /* _SOC_INTEL_COMMON_BLOCK_ACPI_H_ */ -- cgit v1.2.3