summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMarc Jones <marcjones@sysproconsulting.com>2020-12-02 11:24:00 -0700
committerHung-Te Lin <hungte@chromium.org>2020-12-21 02:35:21 +0000
commit847043c2074e855e48f820fbc193a2c860827e1b (patch)
tree353c530299f491dd16dbb661c5b13480e34f87e7
parentcbe12440713f66d1f05ecc34a0dcc6b6c8c73b4e (diff)
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 <marcjones@sysproconsulting.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/48246 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
-rw-r--r--src/soc/intel/common/block/acpi/acpi.c23
-rw-r--r--src/soc/intel/common/block/include/intelblocks/acpi.h12
2 files changed, 34 insertions, 1 deletions
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_ */