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authorStefan Reinauer <stepan@openbios.org>2004-06-28 12:04:06 +0000
committerStefan Reinauer <stepan@openbios.org>2004-06-28 12:04:06 +0000
commitf2065a4cf9d8a66f237dfb0f7502b19f89a852c9 (patch)
tree75d88b8591372c99fa351e3f51e65bef63c2f3a7 /src/drivers/emulation/qemu/init.c
parente2b53e14327ea01dff9291815b10709b74b661f2 (diff)
add qemu graphics card initialization driver
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1612 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/drivers/emulation/qemu/init.c')
-rw-r--r--src/drivers/emulation/qemu/init.c90
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,
+};
+
+