drivers/aspeed: Add native text mode VGA support for the AST2050

Change-Id: I37763a59d2546cd0c0e57b31fdb7aa77c2c50bee
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/11937
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: build bot (Jenkins)

3 files changed, 98 insertions, 0 deletions

diff --git a/src/drivers/aspeed/ast2050/Kconfig b/src/drivers/aspeed/ast2050/Kconfig
new file mode 100644
index 0000000000..f110d58bf5
--- /dev/null
+++ b/src/drivers/aspeed/ast2050/Kconfig
@@ -0,0 +1,14 @@
+config DRIVERS_ASPEED_AST2050
+	bool
+
+if DRIVERS_ASPEED_AST2050
+
+config DEVICE_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select DRIVERS_ASPEED_AST_COMMON
+
+config NATIVE_VGA_INIT_USE_EDID
+	bool
+	default n
+
+endif # DRIVERS_ASPEED_AST2050
diff --git a/src/drivers/aspeed/ast2050/Makefile.inc b/src/drivers/aspeed/ast2050/Makefile.inc
new file mode 100644
index 0000000000..9e5b5c54ee
--- /dev/null
+++ b/src/drivers/aspeed/ast2050/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_DRIVERS_ASPEED_AST2050) += ast2050.c
diff --git a/src/drivers/aspeed/ast2050/ast2050.c b/src/drivers/aspeed/ast2050/ast2050.c
new file mode 100644
index 0000000000..809e9de768
--- /dev/null
+++ b/src/drivers/aspeed/ast2050/ast2050.c
@@ -0,0 +1,83 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ *
+ * 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 <delay.h>
+#include <stdlib.h>
+#include <string.h>
+#include <arch/io.h>
+#include <edid.h>
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+
+#include <pc80/vga.h>
+
+#include "../common/aspeed_coreboot.h"
+#include "../common/ast_drv.h"
+
+static void aspeed_ast2050_set_resources(device_t dev)
+{
+	/* Reserve VGA regions */
+	mmio_resource(dev, 3, 0xa0000 >> 10, 0x1ffff >> 10);
+
+	/* Run standard resource set routine */
+	pci_dev_set_resources(dev);
+}
+
+static void aspeed_ast2050_init(struct device *dev)
+{
+	u8 ret;
+	struct drm_device drm_dev;
+
+	drm_dev.pdev = dev;
+
+	printk(BIOS_INFO, "ASpeed AST2050: initializing video device\n");
+	ret = ast_driver_load(&drm_dev, 0);
+
+	/* Unlock extended configuration registers */
+	outb(0x80, 0x3d4); outb(0xa8, 0x3d5);
+
+	/* Set CRT Request Threshold */
+	outb(0xa6, 0x3d4); outb(0x2f, 0x3d5);
+	outb(0xa7, 0x3d4); outb(0x3f, 0x3d5);
+
+	/* Initialize standard VGA text mode */
+	vga_io_init();
+	vga_textmode_init();
+	printk(BIOS_INFO, "ASpeed VGA text mode initialized\n");
+
+	/* if we don't have console, at least print something... */
+	vga_line_write(0, "ASpeed VGA text mode initialized");
+}
+
+static struct device_operations aspeed_ast2050_ops  = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = aspeed_ast2050_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init             = aspeed_ast2050_init,
+	.scan_bus         = 0,
+};
+
+static const struct pci_driver aspeed_ast2050_driver __pci_driver = {
+        .ops    = &aspeed_ast2050_ops,
+        .vendor = PCI_VENDOR_ID_ASPEED,
+        .device = PCI_DEVICE_ID_ASPEED_AST2050_VGA,
+};