1 files changed, 126 insertions, 0 deletions
diff --git a/arch/unicore32/boot/compressed/misc.c b/arch/unicore32/boot/compressed/misc.c
new file mode 100644
index 00000000000..176d5bda355
--- /dev/null
+++ b/arch/unicore32/boot/compressed/misc.c
@@ -0,0 +1,126 @@
+/*
+ * linux/arch/unicore32/boot/compressed/misc.c
+ *
+ * Code specific to PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * 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.
+ */
+
+#include <asm/unaligned.h>
+#include <mach/uncompress.h>
+
+/*
+ * gzip delarations
+ */
+unsigned char *output_data;
+unsigned long output_ptr;
+
+unsigned int free_mem_ptr;
+unsigned int free_mem_end_ptr;
+
+#define STATIC static
+#define STATIC_RW_DATA	/* non-static please */
+
+/*
+ * arch-dependent implementations
+ */
+#ifndef ARCH_HAVE_DECOMP_ERROR
+#define arch_decomp_error(x)
+#endif
+
+#ifndef ARCH_HAVE_DECOMP_SETUP
+#define arch_decomp_setup()
+#endif
+
+#ifndef ARCH_HAVE_DECOMP_PUTS
+#define arch_decomp_puts(p)
+#endif
+
+void *memcpy(void *dest, const void *src, size_t n)
+{
+	int i = 0;
+	unsigned char *d = (unsigned char *)dest, *s = (unsigned char *)src;
+
+	for (i = n >> 3; i > 0; i--) {
+		*d++ = *s++;
+		*d++ = *s++;
+		*d++ = *s++;
+		*d++ = *s++;
+		*d++ = *s++;
+		*d++ = *s++;
+		*d++ = *s++;
+		*d++ = *s++;
+	}
+
+	if (n & 1 << 2) {
+		*d++ = *s++;
+		*d++ = *s++;
+		*d++ = *s++;
+		*d++ = *s++;
+	}
+
+	if (n & 1 << 1) {
+		*d++ = *s++;
+		*d++ = *s++;
+	}
+
+	if (n & 1)
+		*d++ = *s++;
+
+	return dest;
+}
+
+void error(char *x)
+{
+	arch_decomp_puts("\n\n");
+	arch_decomp_puts(x);
+	arch_decomp_puts("\n\n -- System halted");
+
+	arch_decomp_error(x);
+
+	for (;;)
+		; /* Halt */
+}
+
+/* Heap size should be adjusted for different decompress method */
+#ifdef CONFIG_KERNEL_GZIP
+#include "../../../../lib/decompress_inflate.c"
+#endif
+
+#ifdef CONFIG_KERNEL_BZIP2
+#include "../../../../lib/decompress_bunzip2.c"
+#endif
+
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
+
+#ifdef CONFIG_KERNEL_LZMA
+#include "../../../../lib/decompress_unlzma.c"
+#endif
+
+unsigned long decompress_kernel(unsigned long output_start,
+		unsigned long free_mem_ptr_p,
+		unsigned long free_mem_ptr_end_p)
+{
+	unsigned char *tmp;
+
+	output_data		= (unsigned char *)output_start;
+	free_mem_ptr		= free_mem_ptr_p;
+	free_mem_end_ptr	= free_mem_ptr_end_p;
+
+	arch_decomp_setup();
+
+	tmp = (unsigned char *) (((unsigned long)input_data_end) - 4);
+	output_ptr = get_unaligned_le32(tmp);
+
+	arch_decomp_puts("Uncompressing Linux...");
+	decompress(input_data, input_data_end - input_data, NULL, NULL,
+			output_data, NULL, error);
+	arch_decomp_puts(" done, booting the kernel.\n");
+	return output_ptr;
+}