Initial untested board code for the VIA EPIA-M700 Mini-ITX board.

The patch has been submitted by bari <bari@onelabs.com> and written
by OLPC.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4342 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 227 insertions, 0 deletions

diff --git a/src/mainboard/via/epia-m700/acpi_tables.c b/src/mainboard/via/epia-m700/acpi_tables.c
new file mode 100644
index 0000000000..cb85be2805
--- /dev/null
+++ b/src/mainboard/via/epia-m700/acpi_tables.c
@@ -0,0 +1,227 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * 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
+ * (C) Copyright 2009 One Laptop per Child, Association, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+/*
+ * most parts of this file copied from src\mainboard\asus\a8v-e_se\acpi_tables.c,
+ * acpi_is_wakeup() is from Rudolf's S3 patch and SSDT was added
+ */
+
+#include <console/console.h>
+#include <string.h>
+#include <arch/acpi.h>
+#include <device/device.h>
+#include <device/pci_ids.h>
+#include <../../../northbridge/via/vx800/vx800.h>
+
+extern unsigned char AmlCode_dsdt[];
+extern unsigned char AmlCode_ssdt[];
+
+/*
+These four macro copied from  #include <arch/smp/mpspec.h>, I have to do this since    "default HAVE_MP_TABLE = 0" in option.lb,
+and also since mainboard/via/*.* have no Mptable.c(so that I can not set HAVE_MP_TABLE = 1) as many other mainboard.
+So I have to copy these four to here. acpi_fill_madt() need this.
+*/
+#define MP_IRQ_POLARITY_HIGH	0x1
+#define MP_IRQ_POLARITY_LOW	0x3
+#define MP_IRQ_TRIGGER_EDGE	0x4
+#define MP_IRQ_TRIGGER_LEVEL	0xc
+
+
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+       /*	NO MCFG in VX855, no pci-e*/
+	return current;
+}
+
+unsigned long acpi_create_madt_lapics(unsigned long current)
+{
+	device_t cpu;
+	int cpu_index = 0;
+
+	for(cpu = all_devices; cpu; cpu = cpu->next) {
+		if ((cpu->path.type != DEVICE_PATH_APIC) ||
+		   (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) {
+			continue;
+		}
+		if (!cpu->enabled) {
+			continue;
+		}
+		current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, cpu_index, cpu->path.apic.apic_id);
+		cpu_index++;
+	}
+	return current;
+}
+
+unsigned long acpi_create_madt_lapic_nmis(unsigned long current, u16 flags, u8 lint)
+{
+	device_t cpu;
+	int cpu_index = 0;
+
+	for(cpu = all_devices; cpu; cpu = cpu->next) {
+		if ((cpu->path.type != DEVICE_PATH_APIC) ||
+		   (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) {
+			continue;
+		}
+		if (!cpu->enabled) {
+			continue;
+		}
+		current += acpi_create_madt_lapic_nmi((acpi_madt_lapic_nmi_t *)current, cpu_index, flags, lint);
+		cpu_index++;
+	}
+	return current;
+}
+
+unsigned long acpi_fill_madt(unsigned long current)
+{
+	unsigned int gsi_base = 0x18;
+
+	/* Create all subtables for processors. */
+	current = acpi_create_madt_lapics(current);
+
+	/* Write SB IOAPIC. */
+	current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current,
+				VX800SB_APIC_ID, VX800SB_APIC_BASE, 0);
+
+	/* IRQ0 -> APIC IRQ2. */
+	current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
+						current, 0, 0, 2, 0x0);	
+
+	/* IRQ9 ACPI active low. */
+	current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
+		current, 0, 9, 9, MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_LOW);
+
+	/* Create all subtables for processors. */
+	current = acpi_create_madt_lapic_nmis(current,
+			MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH, 1);
+
+	return current;
+}
+
+unsigned long acpi_fill_slit(unsigned long current) 
+{ 
+        // Not implemented 
+        return current; 
+}
+ 
+unsigned long acpi_fill_srat(unsigned long current)
+{
+	/* No NUMA, no SRAT */
+}
+
+#define ALIGN(x,a)              __ALIGN_MASK(x,(typeof(x))(a)-1)
+#define __ALIGN_MASK(x,mask)    (((x)+(mask))&~(mask))
+
+unsigned long write_acpi_tables(unsigned long start)
+{
+	unsigned long current;
+	acpi_rsdp_t *rsdp;
+	acpi_srat_t *srat;
+	acpi_rsdt_t *rsdt;
+	acpi_mcfg_t *mcfg;
+	acpi_hpet_t *hpet;
+	acpi_madt_t *madt;
+	acpi_fadt_t *fadt;
+	acpi_facs_t *facs;
+	acpi_header_t *dsdt;
+	acpi_header_t *ssdt;
+	
+	/* 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");
+	current = ALIGN(current, 64);
+	facs = (acpi_facs_t *) current;
+	current += sizeof(acpi_facs_t);
+	acpi_create_facs(facs);
+
+	printk_debug("ACPI:     * DSDT\n");
+	dsdt = (acpi_header_t *) current;
+	current += ((acpi_header_t *)AmlCode_dsdt)->length;
+	memcpy((void *)dsdt,(void *)AmlCode_dsdt, ((acpi_header_t *)AmlCode_dsdt)->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);
+
+	/* If we want to use HPET timers Linux wants it in MADT. */
+	printk_debug("ACPI:    * MADT\n");
+	madt = (acpi_madt_t *) current;
+	acpi_create_madt(madt);
+	current += madt->header.length;
+	acpi_add_table(rsdt, madt);
+	
+       /*	NO MCFG in VX855, no pci-e*/
+
+	printk_debug("ACPI:    * HPET\n");
+	hpet = (acpi_mcfg_t *) current;
+	acpi_create_hpet(hpet);
+	current += hpet->header.length;
+	acpi_add_table(rsdt, hpet);
+/*
+	printk_debug("ACPI:     * SSDT\n");
+	ssdt = (acpi_header_t *) current;
+	current += ((acpi_header_t *)AmlCode_ssdt)->length;
+	memcpy((void *)ssdt,(void *)AmlCode_ssdt, ((acpi_header_t *)AmlCode_ssdt)->length);
+	ssdt->checksum = 0; // don't trust intel iasl compiler to get this right
+	ssdt->checksum = acpi_checksum(ssdt, ssdt->length);
+	acpi_add_table(rsdt, ssdt);
+	printk_debug("ACPI:     * SSDT @ %08x Length %x\n", ssdt, ssdt->length);
+*/
+
+	printk_info("ACPI: done.\n");
+	return current;
+}
+
+extern u32 wake_vec;
+extern u8 acpi_sleep_type;
+
+int acpi_is_wakeup(void) {
+	return (acpi_sleep_type == 3);
+}
+