1 files changed, 94 insertions, 0 deletions
diff --git a/src/mainboard/via/epia-n/acpi_tables.c b/src/mainboard/via/epia-n/acpi_tables.c
new file mode 100644
index 0000000000..9ca946de59
--- /dev/null
+++ b/src/mainboard/via/epia-n/acpi_tables.c
@@ -0,0 +1,94 @@
+/*
+ * coreboot 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_fill_mcfg(unsigned long current)
+{
+	/* Nothing to do */
+	return current;
+}
+
+unsigned long acpi_fill_slit(unsigned long current)
+{
+	// Not implemented
+	return current;
+}
+
+unsigned long acpi_fill_madt(unsigned long current)
+{
+	/* Nothing to do */
+	return current;
+}
+
+unsigned long acpi_fill_srat(unsigned long current)
+{
+	/* No NUMA, no SRAT */
+	return current;
+}
+
+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;
+}
+