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-rw-r--r--src/mainboard/samsung/lumpy/smihandler.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/src/mainboard/samsung/lumpy/smihandler.c b/src/mainboard/samsung/lumpy/smihandler.c
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+++ b/src/mainboard/samsung/lumpy/smihandler.c
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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * 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
+ */
+
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+#include <console/console.h>
+#include <cpu/x86/smm.h>
+#include <southbridge/intel/bd82x6x/nvs.h>
+#include <southbridge/intel/bd82x6x/pch.h>
+#include <southbridge/intel/bd82x6x/me.h>
+#include <northbridge/intel/sandybridge/sandybridge.h>
+#include <cpu/intel/model_206ax/model_206ax.h>
+#include <ec/smsc/mec1308/ec.h>
+#include "ec.h"
+
+int mainboard_io_trap_handler(int smif)
+{
+ switch (smif) {
+ case 0x99:
+ printk(BIOS_DEBUG, "Sample\n");
+ smm_get_gnvs()->smif = 0;
+ break;
+ default:
+ return 0;
+ }
+
+ /* On success, the IO Trap Handler returns 0
+ * On failure, the IO Trap Handler returns a value != 0
+ *
+ * For now, we force the return value to 0 and log all traps to
+ * see what's going on.
+ */
+ //gnvs->smif = 0;
+ return 1;
+}
+
+static u8 mainboard_smi_ec(void)
+{
+ u8 cmd;
+ u32 pm1_cnt;
+
+ cmd = read_ec_command_byte(EC_GET_SMI_CAUSE);
+
+ switch (cmd) {
+ case EC_LID_CLOSE:
+ printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
+
+ /* Go to S5 */
+ pm1_cnt = inl(smm_get_pmbase() + PM1_CNT);
+ pm1_cnt |= (0xf << 10);
+ outl(pm1_cnt, smm_get_pmbase() + PM1_CNT);
+ break;
+ }
+
+ return cmd;
+}
+
+void mainboard_smi_gpi(u16 gpi_sts)
+{
+ if (gpi_sts & (1 << EC_SMI_GPI)) {
+ /* Process all pending EC requests */
+ ec_set_ports(EC_MAILBOX_PORT, EC_MAILBOX_PORT+1);
+ while (mainboard_smi_ec() != 0xff);
+
+ /* The EC may keep asserting SMI# for some
+ * period unless we kick it here.
+ */
+ send_ec_command(EC_SMI_DISABLE);
+ send_ec_command(EC_SMI_ENABLE);
+ }
+}
+
+#define APMC_FINALIZE 0xcb
+
+static int mainboard_finalized = 0;
+
+int mainboard_smi_apmc(u8 apmc)
+{
+ ec_set_ports(EC_MAILBOX_PORT, EC_MAILBOX_PORT+1);
+
+ switch (apmc) {
+ case 0xe1: /* ACPI ENABLE */
+ send_ec_command(EC_SMI_DISABLE);
+ send_ec_command(EC_ACPI_ENABLE);
+ break;
+
+ case 0x1e: /* ACPI DISABLE */
+ send_ec_command(EC_SMI_ENABLE);
+ send_ec_command(EC_ACPI_DISABLE);
+ break;
+
+ case APMC_FINALIZE:
+ if (mainboard_finalized) {
+ printk(BIOS_DEBUG, "SMI#: Already finalized\n");
+ return 0;
+ }
+
+ intel_me_finalize_smm();
+ intel_pch_finalize_smm();
+ intel_sandybridge_finalize_smm();
+ intel_model_206ax_finalize_smm();
+
+ mainboard_finalized = 1;
+ break;
+ }
+ return 0;
+}