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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | /* * * 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() |