add qemu graphics card initialization driver

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1612 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 90 insertions, 0 deletions

diff --git a/src/drivers/emulation/qemu/init.c b/src/drivers/emulation/qemu/init.c
new file mode 100644
index 0000000000..88fa5aeb75
--- /dev/null
+++ b/src/drivers/emulation/qemu/init.c
@@ -0,0 +1,90 @@
+#include <delay.h>
+#include <stdlib.h>
+#include <string.h>
+#include <arch/io.h>
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+
+#if CONFIG_CONSOLE_BTEXT==1
+
+#define PLL_CRTC_DECODE 0
+#define SUPPORT_8_BPP_ABOVE 0
+
+#include "fb.h"
+#include "fbcon.h"
+
+#include <console/btext.h>
+
+#endif /*CONFIG_CONSOLE_BTEXT*/
+
+
+/* VGA init. We use the Bochs VESA VBE extensions  */
+#define VBE_DISPI_INDEX_ID              0x0
+#define VBE_DISPI_INDEX_XRES            0x1
+#define VBE_DISPI_INDEX_YRES            0x2
+#define VBE_DISPI_INDEX_BPP             0x3
+#define VBE_DISPI_INDEX_ENABLE          0x4
+#define VBE_DISPI_INDEX_BANK            0x5
+#define VBE_DISPI_INDEX_VIRT_WIDTH      0x6
+#define VBE_DISPI_INDEX_VIRT_HEIGHT     0x7
+#define VBE_DISPI_INDEX_X_OFFSET        0x8
+#define VBE_DISPI_INDEX_Y_OFFSET        0x9
+#define VBE_DISPI_INDEX_NB              0xa
+
+#define VBE_DISPI_ID0                   0xB0C0
+#define VBE_DISPI_ID1                   0xB0C1
+#define VBE_DISPI_ID2                   0xB0C2
+
+#define VBE_DISPI_DISABLED              0x00
+#define VBE_DISPI_ENABLED               0x01
+#define VBE_DISPI_LFB_ENABLED           0x40
+#define VBE_DISPI_NOCLEARMEM            0x80
+
+#define VBE_DISPI_LFB_PHYSICAL_ADDRESS  0xE0000000
+
+static void vbe_outw(int index, int val)
+{
+    outw(0x1ce, index);
+    outw(0x1cf, val);
+}
+
+static void qemu_init(void)
+{
+    int width=640, height=480, depth=8;
+
+    printk_debug("Initializing VGA!\n");
+    
+    vbe_outw(VBE_DISPI_INDEX_XRES, width);
+    vbe_outw(VBE_DISPI_INDEX_YRES, height);
+    vbe_outw(VBE_DISPI_INDEX_BPP, depth);
+    vbe_outw(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED);
+    outb(0x3c0, 0x20); /* disable blanking */
+/*
+    vga_fb_phys_addr = VBE_DISPI_LFB_PHYSICAL_ADDRESS;
+    vga_fb_width = width;
+    vga_fb_height = height;
+    vga_fb_depth = depth;
+    vga_fb_bpp = (depth + 7) >> 3;
+    vga_fb_linesize = width * vga_fb_bpp;
+    */
+}
+
+static struct device_operations qemu_graph_ops  = {
+        .read_resources   = pci_dev_read_resources,
+        .set_resources    = pci_dev_set_resources,
+        .enable_resources = pci_dev_enable_resources,
+        .init             = qemu_init,
+        .scan_bus         = 0,
+};
+
+static struct pci_driver qemu_graph_driver __pci_driver = {
+        .ops    = &qemu_graph_ops,
+        .vendor = 0x1234,
+        .device = 0x1111,
+};
+
+