--- /dev/null
+/*
+ * arch/arm/mach-rpc/include/mach/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 <linux/io.h>
+#include <mach/hardware.h>
+#include <asm/setup.h>
+#include <asm/page.h>
+
+int video_size_row;
+unsigned char 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
+unsigned long video_num_cols;
+unsigned long video_num_rows;
+unsigned long video_x;
+unsigned long video_y;
+unsigned char bytes_per_char_v;
+int white;
+
+/*
+ * 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 = video_x;
+ y = video_y;
+
+ if (c == '\n') {
+ if (++y >= video_num_rows)
+ y--;
+ } else if (c == '\r') {
+ x = 0;
+ } else {
+ ptr = VIDMEM + ((y*video_num_cols*bytes_per_char_v+x)*bytes_per_char_h);
+ ll_write_char(ptr, c, white);
+ if (++x >= video_num_cols) {
+ x = 0;
+ if ( ++y >= video_num_rows ) {
+ y--;
+ }
+ }
+ }
+
+ video_x = x;
+ video_y = y;
+}
+
+static inline void flush(void)
+{
+}
+
+/*
+ * Setup for decompression
+ */
+static void arch_decomp_setup(void)
+{
+ int i;
+ struct tag *t = (struct tag *)params;
+ unsigned int nr_pages = 0, page_size = PAGE_SIZE;
+
+ if (t->hdr.tag == ATAG_CORE)
+ {
+ for (; t->hdr.size; t = tag_next(t))
+ {
+ if (t->hdr.tag == ATAG_VIDEOTEXT)
+ {
+ video_num_rows = t->u.videotext.video_lines;
+ video_num_cols = t->u.videotext.video_cols;
+ bytes_per_char_h = t->u.videotext.video_points;
+ bytes_per_char_v = t->u.videotext.video_points;
+ video_x = t->u.videotext.x;
+ video_y = t->u.videotext.y;
+ }
+
+ if (t->hdr.tag == ATAG_MEM)
+ {
+ page_size = PAGE_SIZE;
+ nr_pages += (t->u.mem.size / PAGE_SIZE);
+ }
+ }
+ }
+ else
+ {
+ nr_pages = params->nr_pages;
+ page_size = params->page_size;
+ video_num_rows = params->video_num_rows;
+ video_num_cols = params->video_num_cols;
+ video_x = params->video_x;
+ video_y = params->video_y;
+ bytes_per_char_h = params->bytes_per_char_h;
+ bytes_per_char_v = params->bytes_per_char_v;
+ }
+
+ video_size_row = video_num_cols * 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 (nr_pages * page_size < 4096*1024) error("<4M of mem\n");
+}
+#endif
Code Review / kvmfornfv.git / blobdiff