mainboard/lenovo: [1/2] fork X230 to T530

Step 1: copy all files unmodified from Lenovo X230.  This makes it much
easier later to see how the two boards actually and deliberately differ
when porting bugfixes from one to the other.

Change-Id: I3151c7848440ea6c240b959379a8eb369d35f3de
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5390
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)

1 files changed, 175 insertions, 0 deletions

diff --git a/src/mainboard/lenovo/t530/smihandler.c b/src/mainboard/lenovo/t530/smihandler.c
new file mode 100644
index 0000000000..bbe08e2620
--- /dev/null
+++ b/src/mainboard/lenovo/t530/smihandler.c
@@ -0,0 +1,175 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright (C) 2014 Vladimir Serbinenko
+ *
+ * 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 <console/console.h>
+#include <cpu/x86/smm.h>
+#include <ec/acpi/ec.h>
+#include <pc80/mc146818rtc.h>
+#include <ec/lenovo/h8/h8.h>
+#include <delay.h>
+#include "smi.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>
+
+/* The southbridge SMI handler checks whether gnvs has a
+ * valid pointer before calling the trap handler
+ */
+extern global_nvs_t *gnvs;
+
+static void mainboard_smm_init(void)
+{
+	printk(BIOS_DEBUG, "initializing SMI\n");
+	/* Enable 0x1600/0x1600 register pair */
+	ec_set_bit(0x00, 0x05);
+}
+
+int mainboard_io_trap_handler(int smif)
+{
+	static int smm_initialized;
+
+	if (!smm_initialized) {
+		mainboard_smm_init();
+		smm_initialized = 1;
+	}
+
+	switch (smif) {
+	default:
+		return 0;
+	}
+
+	/* On success, the IO Trap Handler returns 1
+	 * On failure, the IO Trap Handler returns a value != 1 */
+	return 1;
+}
+
+static void mainboard_smi_brightness_up(void)
+{
+	u8 value;
+
+	if ((value = pci_read_config8(PCI_DEV(0, 2, 1), 0xf4)) < 0xf0)
+		pci_write_config8(PCI_DEV(0, 2, 1), 0xf4, (value + 0x10) | 0xf);
+}
+
+static void mainboard_smi_brightness_down(void)
+{
+	u8 value;
+
+	if ((value = pci_read_config8(PCI_DEV(0, 2, 1), 0xf4)) > 0x10)
+		pci_write_config8(PCI_DEV(0, 2, 1), 0xf4,
+				  (value - 0x10) & 0xf0);
+}
+
+static void mainboard_smi_handle_ec_sci(void)
+{
+	u8 status = inb(EC_SC);
+	u8 event;
+
+	if (!(status & EC_SCI_EVT))
+		return;
+
+	event = ec_query();
+	printk(BIOS_DEBUG, "EC event %02x\n", event);
+
+	switch (event) {
+	case 0x14:
+		/* brightness up */
+		mainboard_smi_brightness_up();
+		break;
+	case 0x15:
+		/* brightness down */
+		mainboard_smi_brightness_down();
+		break;
+	default:
+		break;
+	}
+}
+
+void mainboard_smi_gpi(u32 gpi_sts)
+{
+	if (gpi_sts & (1 << 12))
+		mainboard_smi_handle_ec_sci();
+}
+
+static int mainboard_finalized = 0;
+
+int mainboard_smi_apmc(u8 data)
+{
+	u16 pmbase = pci_read_config16(PCI_DEV(0, 0x1f, 0), 0x40) & 0xfffc;
+	u8 tmp;
+
+	printk(BIOS_DEBUG, "%s: pmbase %04X, data %02X\n", __func__, pmbase,
+	       data);
+
+	if (!pmbase)
+		return 0;
+
+	switch (data) {
+	case APM_CNT_ACPI_ENABLE:
+		/* use 0x1600/0x1604 to prevent races with userspace */
+		ec_set_ports(0x1604, 0x1600);
+		/* route H8SCI to SCI */
+		outw(inw(ALT_GP_SMI_EN) & ~0x1000, pmbase + ALT_GP_SMI_EN);
+		tmp = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xbb);
+		tmp &= ~0x03;
+		tmp |= 0x02;
+		pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xbb, tmp);
+		/* discard all events, and enable attention */
+		ec_write(0x80, 0x01);
+		break;
+	case APM_CNT_ACPI_DISABLE:
+		/* we have to use port 0x62/0x66, as 0x1600/0x1604 doesn't
+		   provide a EC query function */
+		ec_set_ports(0x66, 0x62);
+		/* route H8SCI# to SMI */
+		outw(inw(pmbase + ALT_GP_SMI_EN) | 0x1000,
+		     pmbase + ALT_GP_SMI_EN);
+		tmp = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xbb);
+		tmp &= ~0x03;
+		tmp |= 0x01;
+		pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xbb, tmp);
+		/* discard all events, and enable attention */
+		ec_write(0x80, 0x01);
+		break;
+	case APM_CNT_FINALIZE:
+		printk(BIOS_DEBUG, "APMC: FINALIZE\n");
+		if (mainboard_finalized) {
+			printk(BIOS_DEBUG, "APMC#: 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;
+
+	default:
+		break;
+	}
+	return 0;
+}