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gerrit-public.fairphone.software / kernel / msm-4.9 / 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 / . / include / asm-arm / arch-rpc / uncompress.h
blob: 43035fec64d21eef7ad94f0ba821db99e342468f [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame^]1/*
2 * linux/include/asm-arm/arch-rpc/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 *)SCREEN_START)
11
12#include <asm/hardware.h>
13#include <asm/io.h>
14
15int video_num_columns, video_num_lines, video_size_row;
16int white, bytes_per_char_h;
17extern unsigned long con_charconvtable[256];
18
19struct param_struct {
20 unsigned long page_size;
21 unsigned long nr_pages;
22 unsigned long ramdisk_size;
23 unsigned long mountrootrdonly;
24 unsigned long rootdev;
25 unsigned long video_num_cols;
26 unsigned long video_num_rows;
27 unsigned long video_x;
28 unsigned long video_y;
29 unsigned long memc_control_reg;
30 unsigned char sounddefault;
31 unsigned char adfsdrives;
32 unsigned char bytes_per_char_h;
33 unsigned char bytes_per_char_v;
34 unsigned long unused[256/4-11];
35};
36
37static const unsigned long palette_4[16] = {
38 0x00000000,
39 0x000000cc,
40 0x0000cc00, /* Green */
41 0x0000cccc, /* Yellow */
42 0x00cc0000, /* Blue */
43 0x00cc00cc, /* Magenta */
44 0x00cccc00, /* Cyan */
45 0x00cccccc, /* White */
46 0x00000000,
47 0x000000ff,
48 0x0000ff00,
49 0x0000ffff,
50 0x00ff0000,
51 0x00ff00ff,
52 0x00ffff00,
53 0x00ffffff
54};
55
56#define palette_setpixel(p) *(unsigned long *)(IO_START+0x00400000) = 0x10000000|((p) & 255)
57#define palette_write(v) *(unsigned long *)(IO_START+0x00400000) = 0x00000000|((v) & 0x00ffffff)
58
59/*
60 * params_phys is a linker defined symbol - see
61 * arch/arm/boot/compressed/Makefile
62 */
63extern __attribute__((pure)) struct param_struct *params(void);
64#define params (params())
65
66#ifndef STANDALONE_DEBUG
67/*
68 * This does not append a newline
69 */
70static void putstr(const char *s)
71{
72 extern void ll_write_char(char *, char c, char white);
73 int x,y;
74 unsigned char c;
75 char *ptr;
76
77 x = params->video_x;
78 y = params->video_y;
79
80 while ( ( c = *(unsigned char *)s++ ) != '\0' ) {
81 if ( c == '\n' ) {
82 x = 0;
83 if ( ++y >= video_num_lines ) {
84 y--;
85 }
86 } else {
87 ptr = VIDMEM + ((y*video_num_columns*params->bytes_per_char_v+x)*bytes_per_char_h);
88 ll_write_char(ptr, c, white);
89 if ( ++x >= video_num_columns ) {
90 x = 0;
91 if ( ++y >= video_num_lines ) {
92 y--;
93 }
94 }
95 }
96 }
97
98 params->video_x = x;
99 params->video_y = y;
100}
101
102static void error(char *x);
103
104/*
105 * Setup for decompression
106 */
107static void arch_decomp_setup(void)
108{
109 int i;
110
111 video_num_lines = params->video_num_rows;
112 video_num_columns = params->video_num_cols;
113 bytes_per_char_h = params->bytes_per_char_h;
114 video_size_row = video_num_columns * bytes_per_char_h;
115 if (bytes_per_char_h == 4)
116 for (i = 0; i < 256; i++)
117 con_charconvtable[i] =
118 (i & 128 ? 1 << 0 : 0) |
119 (i & 64 ? 1 << 4 : 0) |
120 (i & 32 ? 1 << 8 : 0) |
121 (i & 16 ? 1 << 12 : 0) |
122 (i & 8 ? 1 << 16 : 0) |
123 (i & 4 ? 1 << 20 : 0) |
124 (i & 2 ? 1 << 24 : 0) |
125 (i & 1 ? 1 << 28 : 0);
126 else
127 for (i = 0; i < 16; i++)
128 con_charconvtable[i] =
129 (i & 8 ? 1 << 0 : 0) |
130 (i & 4 ? 1 << 8 : 0) |
131 (i & 2 ? 1 << 16 : 0) |
132 (i & 1 ? 1 << 24 : 0);
133
134
135 palette_setpixel(0);
136 if (bytes_per_char_h == 1) {
137 palette_write (0);
138 palette_write (0x00ffffff);
139 for (i = 2; i < 256; i++)
140 palette_write (0);
141 white = 1;
142 } else {
143 for (i = 0; i < 256; i++)
144 palette_write (i < 16 ? palette_4[i] : 0);
145 white = 7;
146 }
147
148 if (params->nr_pages * params->page_size < 4096*1024) error("<4M of mem\n");
149}
150#endif
151
152/*
153 * nothing to do
154 */
155#define arch_decomp_wdog()