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-rw-r--r--src/arch/x86/Makefile.inc1
-rw-r--r--src/arch/x86/acpi.c20
2 files changed, 21 insertions, 0 deletions
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index 61e7edcfb9..00690ba02e 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -235,6 +235,7 @@ $(CONFIG_CBFS_PREFIX)/postcar-compression := none
ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32)$(CONFIG_ARCH_RAMSTAGE_X86_64),y)
+ramstage-y += acpi.c
ramstage-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.c
ramstage-$(CONFIG_ACPI_BERT) += acpi_bert_storage.c
ramstage-y += boot.c
diff --git a/src/arch/x86/acpi.c b/src/arch/x86/acpi.c
new file mode 100644
index 0000000000..0ff0ded9bf
--- /dev/null
+++ b/src/arch/x86/acpi.c
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi.h>
+#include <cf9_reset.h>
+
+void arch_fill_fadt(acpi_fadt_t *fadt)
+{
+ if (CONFIG(HAVE_CF9_RESET)) {
+ fadt->reset_reg.space_id = ACPI_ADDRESS_SPACE_IO;
+ fadt->reset_reg.bit_width = 8;
+ fadt->reset_reg.bit_offset = 0;
+ fadt->reset_reg.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
+ fadt->reset_reg.addrl = RST_CNT;
+ fadt->reset_reg.addrh = 0;
+
+ fadt->reset_value = RST_CPU | SYS_RST;
+
+ fadt->flags |= ACPI_FADT_RESET_REGISTER;
+ }
+}