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-rw-r--r--src/mainboard/via/epia-m/Config.lb1
-rw-r--r--src/mainboard/via/epia-m/acpi_tables.c75
2 files changed, 76 insertions, 0 deletions
diff --git a/src/mainboard/via/epia-m/Config.lb b/src/mainboard/via/epia-m/Config.lb
index 03277abaaf..1785850a27 100644
--- a/src/mainboard/via/epia-m/Config.lb
+++ b/src/mainboard/via/epia-m/Config.lb
@@ -49,6 +49,7 @@ if HAVE_PIRQ_TABLE object irq_tables.o end
if HAVE_ACPI_TABLES
object fadt.o
object dsdt.o
+ object acpi_tables.o
end
##
diff --git a/src/mainboard/via/epia-m/acpi_tables.c b/src/mainboard/via/epia-m/acpi_tables.c
new file mode 100644
index 0000000000..180b46bf34
--- /dev/null
+++ b/src/mainboard/via/epia-m/acpi_tables.c
@@ -0,0 +1,75 @@
+/*
+ * LinuxBIOS ACPI Table support
+ * written by Stefan Reinauer <stepan@openbios.org>
+ * ACPI FADT, FACS, and DSDT table support added by
+ * Nick Barker <nick.barker9@btinternet.com>, and those portions
+ * (C) Copyright 2004 Nick Barker
+ * (C) Copyright 2005 Stefan Reinauer
+ */
+
+#include <console/console.h>
+#include <string.h>
+#include <arch/acpi.h>
+
+extern unsigned char AmlCode[];
+
+unsigned long acpi_dump_apics(unsigned long current)
+{
+ /* Nothing to do */
+}
+
+unsigned long write_acpi_tables(unsigned long start)
+{
+ unsigned long current;
+ acpi_rsdp_t *rsdp;
+ acpi_rsdt_t *rsdt;
+ acpi_hpet_t *hpet;
+ acpi_madt_t *madt;
+ acpi_fadt_t *fadt;
+ acpi_facs_t *facs;
+ acpi_header_t *dsdt;
+
+ /* Align ACPI tables to 16byte */
+ start = ( start + 0x0f ) & -0x10;
+ current = start;
+
+ printk_info("ACPI: Writing ACPI tables at %lx...\n", start);
+
+ /* We need at least an RSDP and an RSDT Table */
+ rsdp = (acpi_rsdp_t *) current;
+ current += sizeof(acpi_rsdp_t);
+ rsdt = (acpi_rsdt_t *) current;
+ current += sizeof(acpi_rsdt_t);
+
+ /* clear all table memory */
+ memset((void *)start, 0, current - start);
+
+ acpi_write_rsdp(rsdp, rsdt);
+ acpi_write_rsdt(rsdt);
+
+ /*
+ * We explicitly add these tables later on:
+ */
+ printk_debug("ACPI: * FACS\n");
+ facs = (acpi_facs_t *) current;
+ current += sizeof(acpi_facs_t);
+ acpi_create_facs(facs);
+
+ dsdt = (acpi_header_t *)current;
+ current += ((acpi_header_t *)AmlCode)->length;
+ memcpy((void *)dsdt,(void *)AmlCode, ((acpi_header_t *)AmlCode)->length);
+ dsdt->checksum = 0; // don't trust intel iasl compiler to get this right
+ dsdt->checksum = acpi_checksum(dsdt,dsdt->length);
+ printk_debug("ACPI: * DSDT @ %08x Length %x\n",dsdt,dsdt->length);
+ printk_debug("ACPI: * FADT\n");
+
+ fadt = (acpi_fadt_t *) current;
+ current += sizeof(acpi_fadt_t);
+
+ acpi_create_fadt(fadt,facs,dsdt);
+ acpi_add_table(rsdt,fadt);
+
+ printk_info("ACPI: done.\n");
+ return current;
+}
+