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- /*
- * linux/include/asm-arm/arch-arc/uncompress.h
- *
- * Copyright (C) 1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #define VIDMEM ((char *)0x02000000)
- 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++ ) != '' ) {
- 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<<16));
- 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 memn");
- }
- /*
- * nothing to do
- */
- #define arch_decomp_wdog()