X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Farch%2Fx86%2Flib%2Fvideo.c;fp=qemu%2Froms%2Fu-boot%2Farch%2Fx86%2Flib%2Fvideo.c;h=dfd2a8496e72e10fcec3fcbad750babac54aea8e;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/roms/u-boot/arch/x86/lib/video.c b/qemu/roms/u-boot/arch/x86/lib/video.c
new file mode 100644
index 000000000..dfd2a8496
--- /dev/null
+++ b/qemu/roms/u-boot/arch/x86/lib/video.c
@@ -0,0 +1,209 @@
+/*
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <stdio_dev.h>
+#include <i8042.h>
+#include <asm/ptrace.h>
+#include <asm/io.h>
+#include <asm/pci.h>
+
+/* basic textmode I/O from linux kernel */
+static char *vidmem = (char *)0xb8000;
+static int vidport;
+static int lines, cols;
+static int orig_x, orig_y;
+
+static void beep(int dur)
+{
+	int i;
+
+	outb_p(3, 0x61);
+	for (i = 0; i < 10*dur; i++)
+		udelay(1000);
+
+	outb_p(0, 0x61);
+}
+
+static void scroll(void)
+{
+	int i;
+
+	memcpy(vidmem, vidmem + cols * 2, (lines - 1) * cols * 2);
+	for (i = (lines - 1) * cols * 2; i < lines * cols * 2; i += 2)
+		vidmem[i] = ' ';
+}
+
+static void __video_putc(const char c, int *x, int *y)
+{
+	if (c == '\n') {
+		(*x) = 0;
+		if (++(*y) >= lines) {
+			scroll();
+			(*y)--;
+		}
+	} else if (c == '\b') {
+		if ((*x) != 0) {
+			--(*x);
+			vidmem[((*x) + cols * (*y)) * 2] = ' ';
+		}
+	} else if (c == '\r') {
+		(*x) = 0;
+
+	} else if (c == '\a') {
+		beep(3);
+
+	} else if (c == '\t') {
+		__video_putc(' ', x, y);
+		__video_putc(' ', x, y);
+		__video_putc(' ', x, y);
+		__video_putc(' ', x, y);
+		__video_putc(' ', x, y);
+		__video_putc(' ', x, y);
+		__video_putc(' ', x, y);
+		__video_putc(' ', x, y);
+	} else if (c == '\v') {
+		switch ((*x) % 8) {
+		case 0:
+			__video_putc(' ', x, y);
+		case 7:
+			__video_putc(' ', x, y);
+		case 6:
+			__video_putc(' ', x, y);
+		case 5:
+			__video_putc(' ', x, y);
+		case 4:
+			__video_putc(' ', x, y);
+		case 3:
+			__video_putc(' ', x, y);
+		case 2:
+			__video_putc(' ', x, y);
+		case 1:
+			__video_putc(' ', x, y);
+		}
+	} else if (c == '\f') {
+		int i;
+		for (i = 0; i < lines * cols * 2; i += 2)
+			vidmem[i] = 0;
+		(*x) = 0;
+		(*y) = 0;
+	} else {
+		vidmem[((*x) + cols * (*y)) * 2] = c;
+		if (++(*x) >= cols) {
+			(*x) = 0;
+			if (++(*y) >= lines) {
+				scroll();
+				(*y)--;
+			}
+		}
+	}
+}
+
+static void video_putc(const char c)
+{
+	int x, y, pos;
+
+	x = orig_x;
+	y = orig_y;
+
+	__video_putc(c, &x, &y);
+
+	orig_x = x;
+	orig_y = y;
+
+	pos = (x + cols * y) * 2;	/* Update cursor position */
+	outb_p(14, vidport);
+	outb_p(0xff & (pos >> 9), vidport+1);
+	outb_p(15, vidport);
+	outb_p(0xff & (pos >> 1), vidport+1);
+}
+
+static void video_puts(const char *s)
+{
+	int x, y, pos;
+	char c;
+
+	x = orig_x;
+	y = orig_y;
+
+	while ((c = *s++) != '\0')
+		__video_putc(c, &x, &y);
+
+	orig_x = x;
+	orig_y = y;
+
+	pos = (x + cols * y) * 2;	/* Update cursor position */
+	outb_p(14, vidport);
+	outb_p(0xff & (pos >> 9), vidport+1);
+	outb_p(15, vidport);
+	outb_p(0xff & (pos >> 1), vidport+1);
+}
+
+int video_init(void)
+{
+	u16 pos;
+
+	static struct stdio_dev vga_dev;
+	static struct stdio_dev kbd_dev;
+
+	vidmem = (char *) 0xb8000;
+	vidport = 0x3d4;
+
+	lines = 25;
+	cols = 80;
+
+	outb_p(14, vidport);
+	pos = inb_p(vidport+1);
+	pos <<= 8;
+	outb_p(15, vidport);
+	pos |= inb_p(vidport+1);
+
+	orig_x = pos%cols;
+	orig_y = pos/cols;
+
+#if 0
+	printf("pos %x %d %d\n", pos, orig_x, orig_y);
+#endif
+	if (orig_y > lines)
+		orig_x = orig_y = 0;
+
+	memset(&vga_dev, 0, sizeof(vga_dev));
+	strcpy(vga_dev.name, "vga");
+	vga_dev.ext   = 0;
+	vga_dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_SYSTEM;
+	vga_dev.putc  = video_putc;        /* 'putc' function */
+	vga_dev.puts  = video_puts;        /* 'puts' function */
+	vga_dev.tstc  = NULL;              /* 'tstc' function */
+	vga_dev.getc  = NULL;              /* 'getc' function */
+
+	if (stdio_register(&vga_dev) == 0)
+		return 1;
+
+	if (i8042_kbd_init())
+		return 1;
+
+	memset(&kbd_dev, 0, sizeof(kbd_dev));
+	strcpy(kbd_dev.name, "kbd");
+	kbd_dev.ext   = 0;
+	kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
+	kbd_dev.putc  = NULL;        /* 'putc' function */
+	kbd_dev.puts  = NULL;        /* 'puts' function */
+	kbd_dev.tstc  = i8042_tstc;  /* 'tstc' function */
+	kbd_dev.getc  = i8042_getc;  /* 'getc' function */
+
+	if (stdio_register(&kbd_dev) == 0)
+		return 1;
+
+	return 0;
+}
+
+
+int drv_video_init(void)
+{
+	return video_init();
+}