patch-2.1.80 linux/include/asm-arm/arch-arc/uncompress.h

• Lines: 105
• Date: Tue Jan 20 16:39:42 1998
• Orig file: v2.1.79/linux/include/asm-arm/arch-arc/uncompress.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.79/linux/include/asm-arm/arch-arc/uncompress.h linux/include/asm-arm/arch-arc/uncompress.h
@@ -0,0 +1,104 @@
+/*
+ * linux/include/asm-arm/arch-a5k/uncompress.h
+ *
+ * Copyright (C) 1996 Russell King
+ */
+#define VIDMEM ((char *)0x02000000)
+ 
+#include "../arch/arm/drivers/char/font.h"
+
+int video_num_columns, video_num_lines, video_size_row;
+int white, bytes_per_char_h;
+extern unsigned long con_charconvtable[256];
+
+struct param_struct {
+	unsigned long page_size;
+	unsigned long nr_pages;
+	unsigned long ramdisk_size;
+	unsigned long mountrootrdonly;
+	unsigned long rootdev;
+	unsigned long video_num_cols;
+	unsigned long video_num_rows;
+	unsigned long video_x;
+	unsigned long video_y;
+	unsigned long memc_control_reg;
+	unsigned char sounddefault;
+	unsigned char adfsdrives;
+	unsigned char bytes_per_char_h;
+	unsigned char bytes_per_char_v;
+	unsigned long unused[256/4-11];
+};
+
+static struct param_struct *params = (struct param_struct *)0x0207c000;
+ 
+/*
+ * This does not append a newline
+ */
+static void puts(const char *s)
+{
+	extern void ll_write_char(char *, unsigned long);
+	int x,y;
+	unsigned char c;
+	char *ptr;
+
+	x = params->video_x;
+	y = params->video_y;
+
+	while ( ( c = *(unsigned char *)s++ ) != '\0' ) {
+		if ( c == '\n' ) {
+			x = 0;
+			if ( ++y >= video_num_lines ) {
+				y--;
+			}
+		} else {
+			ptr = VIDMEM + ((y*video_num_columns*params->bytes_per_char_v+x)*bytes_per_char_h);
+			ll_write_char(ptr, c|(white<<8));
+			if ( ++x >= video_num_columns ) {
+				x = 0;
+				if ( ++y >= video_num_lines ) {
+					y--;
+				}
+			}
+		}
+	}
+
+	params->video_x = x;
+	params->video_y = y;
+}
+
+static void error(char *x);
+
+/*
+ * Setup for decompression
+ */
+static void arch_decomp_setup(void)
+{
+	int i;
+	
+	video_num_lines = params->video_num_rows;
+	video_num_columns = params->video_num_cols;
+	bytes_per_char_h = params->bytes_per_char_h;
+	video_size_row = video_num_columns * bytes_per_char_h;
+	if (bytes_per_char_h == 4)
+		for (i = 0; i < 256; i++)
+			con_charconvtable[i] =
+				(i & 128 ? 1 << 0  : 0) |
+				(i & 64  ? 1 << 4  : 0) |
+				(i & 32  ? 1 << 8  : 0) |
+				(i & 16  ? 1 << 12 : 0) |
+				(i & 8   ? 1 << 16 : 0) |
+				(i & 4   ? 1 << 20 : 0) |
+				(i & 2   ? 1 << 24 : 0) |
+				(i & 1   ? 1 << 28 : 0);
+	else
+		for (i = 0; i < 16; i++)
+			con_charconvtable[i] =
+				(i & 8   ? 1 << 0  : 0) |
+				(i & 4   ? 1 << 8  : 0) |
+				(i & 2   ? 1 << 16 : 0) |
+				(i & 1   ? 1 << 24 : 0);
+
+	white = bytes_per_char_h == 8 ? 0xfc : 7;
+
+	if (params->nr_pages * params->page_size < 4096*1024) error("<4M of mem\n");
+}