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Diffstat (limited to 'arch/arm26/boot/compressed/uncompress.h')
-rw-r--r--arch/arm26/boot/compressed/uncompress.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/arch/arm26/boot/compressed/uncompress.h b/arch/arm26/boot/compressed/uncompress.h
new file mode 100644
index 000000000000..66d9b938a7a4
--- /dev/null
+++ b/arch/arm26/boot/compressed/uncompress.h
@@ -0,0 +1,110 @@
+/*
+ *
+ * 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()