1/*
2 *  linux/include/asm-arm/arch-arc/uncompress.h
3 *
4 *  Copyright (C) 1996 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#define VIDMEM ((char *)0x02000000)
11
12int video_num_columns, video_num_lines, video_size_row;
13int white, bytes_per_char_h;
14extern unsigned long con_charconvtable[256];
15
16struct param_struct {
17	unsigned long page_size;
18	unsigned long nr_pages;
19	unsigned long ramdisk_size;
20	unsigned long mountrootrdonly;
21	unsigned long rootdev;
22	unsigned long video_num_cols;
23	unsigned long video_num_rows;
24	unsigned long video_x;
25	unsigned long video_y;
26	unsigned long memc_control_reg;
27	unsigned char sounddefault;
28	unsigned char adfsdrives;
29	unsigned char bytes_per_char_h;
30	unsigned char bytes_per_char_v;
31	unsigned long unused[256/4-11];
32};
33
34static struct param_struct *params = (struct param_struct *)0x0207c000;
35
36/*
37 * This does not append a newline
38 */
39static void puts(const char *s)
40{
41	extern void ll_write_char(char *, unsigned long);
42	int x,y;
43	unsigned char c;
44	char *ptr;
45
46	x = params->video_x;
47	y = params->video_y;
48
49	while ( ( c = *(unsigned char *)s++ ) != '\0' ) {
50		if ( c == '\n' ) {
51			x = 0;
52			if ( ++y >= video_num_lines ) {
53				y--;
54			}
55		} else {
56			ptr = VIDMEM + ((y*video_num_columns*params->bytes_per_char_v+x)*bytes_per_char_h);
57			ll_write_char(ptr, c|(white<<16));
58			if ( ++x >= video_num_columns ) {
59				x = 0;
60				if ( ++y >= video_num_lines ) {
61					y--;
62				}
63			}
64		}
65	}
66
67	params->video_x = x;
68	params->video_y = y;
69}
70
71static void error(char *x);
72
73/*
74 * Setup for decompression
75 */
76static void arch_decomp_setup(void)
77{
78	int i;
79
80	video_num_lines = params->video_num_rows;
81	video_num_columns = params->video_num_cols;
82	bytes_per_char_h = params->bytes_per_char_h;
83	video_size_row = video_num_columns * bytes_per_char_h;
84	if (bytes_per_char_h == 4)
85		for (i = 0; i < 256; i++)
86			con_charconvtable[i] =
87				(i & 128 ? 1 << 0  : 0) |
88				(i & 64  ? 1 << 4  : 0) |
89				(i & 32  ? 1 << 8  : 0) |
90				(i & 16  ? 1 << 12 : 0) |
91				(i & 8   ? 1 << 16 : 0) |
92				(i & 4   ? 1 << 20 : 0) |
93				(i & 2   ? 1 << 24 : 0) |
94				(i & 1   ? 1 << 28 : 0);
95	else
96		for (i = 0; i < 16; i++)
97			con_charconvtable[i] =
98				(i & 8   ? 1 << 0  : 0) |
99				(i & 4   ? 1 << 8  : 0) |
100				(i & 2   ? 1 << 16 : 0) |
101				(i & 1   ? 1 << 24 : 0);
102
103	white = bytes_per_char_h == 8 ? 0xfc : 7;
104
105	if (params->nr_pages * params->page_size < 4096*1024) error("<4M of mem\n");
106}
107
108/*
109 * nothing to do
110 */
111#define arch_decomp_wdog()
112