mirror of https://gitee.com/openkylin/linux.git
112 lines
2.5 KiB
C
112 lines
2.5 KiB
C
|
/*
|
||
|
|
* 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++ ) != '\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<<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 mem\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* nothing to do
|
||
|
|
*/
|
||
|
|
#define arch_decomp_wdog()
|