/* * linux/include/asm-arm/arch-rpc/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 *)SCREEN_START) #include <asm/hardware.h> #include <asm/io.h> 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 const unsigned long palette_4[16] = { 0x00000000, 0x000000cc, 0x0000cc00, /* Green */ 0x0000cccc, /* Yellow */ 0x00cc0000, /* Blue */ 0x00cc00cc, /* Magenta */ 0x00cccc00, /* Cyan */ 0x00cccccc, /* White */ 0x00000000, 0x000000ff, 0x0000ff00, 0x0000ffff, 0x00ff0000, 0x00ff00ff, 0x00ffff00, 0x00ffffff }; #define palette_setpixel(p) *(unsigned long *)(IO_START+0x00400000) = 0x10000000|((p) & 255) #define palette_write(v) *(unsigned long *)(IO_START+0x00400000) = 0x00000000|((v) & 0x00ffffff) /* * params_phys is a linker defined symbol - see * arch/arm/boot/compressed/Makefile */ extern __attribute__((pure)) struct param_struct *params(void); #define params (params()) #ifndef STANDALONE_DEBUG /* * This does not append a newline */ static void putc(int c) { extern void ll_write_char(char *, char c, char white); int x,y; char *ptr; x = params->video_x; y = params->video_y; if (c == '\n') { if (++y >= video_num_lines) y--; } else if (c == '\r') { x = 0; } else { ptr = VIDMEM + ((y*video_num_columns*params->bytes_per_char_v+x)*bytes_per_char_h); ll_write_char(ptr, c, white); if (++x >= video_num_columns) { x = 0; if ( ++y >= video_num_lines ) { y--; } } } params->video_x = x; params->video_y = y; } static inline void flush(void) { } 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); palette_setpixel(0); if (bytes_per_char_h == 1) { palette_write (0); palette_write (0x00ffffff); for (i = 2; i < 256; i++) palette_write (0); white = 1; } else { for (i = 0; i < 256; i++) palette_write (i < 16 ? palette_4[i] : 0); white = 7; } if (params->nr_pages * params->page_size < 4096*1024) error("<4M of mem\n"); } #endif /* * nothing to do */ #define arch_decomp_wdog()