soc/intel/fsp_broadwell_de: Add ACPI HPET table

Tested on Mono Lake
TEST=Note the kernel log:
hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0, 0, 0, 0, 0, 0
hpet0: 8 comparators, 64-bit 14.318180 MHz counter

Change-Id: Idae9a7d3d4233037214d6203996bf44fe5f3a845
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35027
Reviewed-by: Johnny Lin
Reviewed-by: Andrey Petrov <anpetrov@fb.com>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/soc/intel/fsp_broadwell_de/acpi.c b/src/soc/intel/fsp_broadwell_de/acpi.c
index fef7773cf9..6b1d3f621b 100644
--- a/src/soc/intel/fsp_broadwell_de/acpi.c
+++ b/src/soc/intel/fsp_broadwell_de/acpi.c
@@ -566,3 +566,14 @@ unsigned long acpi_madt_irq_overrides(unsigned long current)
 
 	return current;
 }
+
+unsigned long southcluster_write_acpi_tables(struct device *device,
+						 unsigned long current,
+						 acpi_rsdp_t *rsdp)
+{
+	current = acpi_write_hpet(device, current, rsdp);
+	current = acpi_align_current(current);
+
+	printk(BIOS_DEBUG, "current = %lx\n", current);
+	return current;
+}