From: Jacob Potter <jdpotter@andrew.cmu.edu>
Date: Fri, 19 Sep 2008 19:52:22 +0000 (-0400)
Subject: split vga and logging code out into vga-overlay.[ch]
X-Git-Url: http://git.joshuawise.com/netwatch.git/commitdiff_plain/91a6abf7a700b750c4a9ba1f4c801a41f0bdd4b1?hp=-c

split vga and logging code out into vga-overlay.[ch]
---

91a6abf7a700b750c4a9ba1f4c801a41f0bdd4b1
diff --git a/aseg/Makefile b/aseg/Makefile
index 1c2867d..6d22af1 100644
--- a/aseg/Makefile
+++ b/aseg/Makefile
@@ -1,6 +1,6 @@
 CC=gcc
 CFLAGS=-I../include -I../include/raw -nostdlib -nostdinc -fno-builtin -D__RAW__ -Wall -Werror -pedantic -ansi -std=gnu99
-OBJS=counter.o firstrun.o ../pci/pci-raw.o ../lib/minilib.o ../lib/console.o ../ich2/smram-ich2.o
+OBJS=counter.o firstrun.o ../pci/pci-raw.o ../lib/minilib.o ../lib/console.o ../ich2/smram-ich2.o vga-overlay.o
 
 all: aseg.elf
 
diff --git a/aseg/counter.c b/aseg/counter.c
index ccfff72..2b1d6ea 100644
--- a/aseg/counter.c
+++ b/aseg/counter.c
@@ -3,77 +3,13 @@
 #include <video_defines.h>
 #include <minilib.h>
 
-unsigned int counter = 0;
-unsigned long pcisave;
-unsigned char vgasave;
 char thestr[512];
-char logents[4][41] = {{0}};
-
-#define VRAM_BASE		0xA0000UL
-#define TEXT_CONSOLE_OFFSET	0x18000UL 
-
-#define TEXT_CONSOLE_BASE	(VRAM_BASE + TEXT_CONSOLE_OFFSET)
-
-#define COLOR			0x1F
-
-unsigned char vga_read(unsigned char idx)
-{
-	outb(CRTC_IDX_REG, idx);
-	return inb(CRTC_DATA_REG);
-}
-
-char * vga_base()
-{
-	return (char *) (
-		TEXT_CONSOLE_BASE
-		| (((unsigned int) vga_read(CRTC_START_ADDR_LSB_IDX)) << 9)
-		| (((unsigned int) vga_read(CRTC_START_ADDR_MSB_IDX)) << 1)
-	);
-}
-
-void strblit(char *src, int row, int col)
-{
-	char *destp = vga_base() + row * 80 * 2 + col * 2;
-	smram_state_t old_state = smram_save_state();
-
-	smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
-	
-	while (*src)
-	{
-		*(destp++) = *(src++);
-		*(destp++) = COLOR;
-	}
-
-	smram_restore_state(old_state);
-}
-
-void outlog()
-{
-	int y, x;
-	char *basep = vga_base();
 
-	smram_state_t old_state = smram_save_state();
-
-	smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
-
-	for (y = 0; y < 4; y++)
-		for (x = 40; x < 80; x++)
-		{
-			basep[y*80*2+x*2] = ' ';
-			basep[y*80*2+x*2+1] = 0x1F;
-		}
+#include "vga-overlay.h"
 
-	smram_restore_state(old_state);
-
-	for (y = 0; y < 4; y++)
-		strblit(logents[y], y, 40);
-}
-
-void dolog(char *s)
-{
-	memmove(logents[0], logents[1], sizeof(logents[0])*3);
-	strcpy(logents[3], s);
-}
+unsigned int counter = 0;
+unsigned long pcisave;
+unsigned char vgasave;
 
 void pci_dump() {
 	char s[40];
diff --git a/aseg/vga-overlay.c b/aseg/vga-overlay.c
new file mode 100644
index 0000000..e5414ca
--- /dev/null
+++ b/aseg/vga-overlay.c
@@ -0,0 +1,72 @@
+#include <io.h>
+#include <smram.h>
+#include <video_defines.h>
+#include <minilib.h>
+
+static char logents[4][41] = {{0}};
+
+#define VRAM_BASE		0xA0000UL
+#define TEXT_CONSOLE_OFFSET	0x18000UL 
+
+#define TEXT_CONSOLE_BASE	(VRAM_BASE + TEXT_CONSOLE_OFFSET)
+
+#define COLOR			0x1F
+
+static unsigned char vga_read(unsigned char idx)
+{
+	outb(CRTC_IDX_REG, idx);
+	return inb(CRTC_DATA_REG);
+}
+
+static char * vga_base()
+{
+	return (char *) (
+		TEXT_CONSOLE_BASE
+		| (((unsigned int) vga_read(CRTC_START_ADDR_LSB_IDX)) << 9)
+		| (((unsigned int) vga_read(CRTC_START_ADDR_MSB_IDX)) << 1)
+	);
+}
+
+void strblit(char *src, int row, int col)
+{
+	char *destp = vga_base() + row * 80 * 2 + col * 2;
+	smram_state_t old_state = smram_save_state();
+
+	smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
+	
+	while (*src)
+	{
+		*(destp++) = *(src++);
+		*(destp++) = COLOR;
+	}
+
+	smram_restore_state(old_state);
+}
+
+void outlog()
+{
+	int y, x;
+	char *basep = vga_base();
+
+	smram_state_t old_state = smram_save_state();
+
+	smram_aseg_set_state(SMRAM_ASEG_SMMCODE);
+
+	for (y = 0; y < 4; y++)
+		for (x = 40; x < 80; x++)
+		{
+			basep[y*80*2+x*2] = ' ';
+			basep[y*80*2+x*2+1] = 0x1F;
+		}
+
+	smram_restore_state(old_state);
+
+	for (y = 0; y < 4; y++)
+		strblit(logents[y], y, 40);
+}
+
+void dolog(char *s)
+{
+	memmove(logents[0], logents[1], sizeof(logents[0])*3);
+	strcpy(logents[3], s);
+}
diff --git a/aseg/vga-overlay.h b/aseg/vga-overlay.h
new file mode 100644
index 0000000..f79e6da
--- /dev/null
+++ b/aseg/vga-overlay.h
@@ -0,0 +1,9 @@
+#ifndef VGA_OVERLAY_H
+#define VGA_OVERLAY_H
+
+void strblit(char *src, int row, int col);
+
+void dolog(char *s);
+void outlog();
+
+#endif