1 files changed, 91 insertions, 0 deletions
diff --git a/arch/m32r/boot/compressed/misc.c b/arch/m32r/boot/compressed/misc.c
new file mode 100644
index 000000000..28a09529f
--- /dev/null
+++ b/arch/m32r/boot/compressed/misc.c
@@ -0,0 +1,91 @@
+/*
+ * arch/m32r/boot/compressed/misc.c
+ *
+ * This is a collection of several routines from gzip-1.0.3
+ * adapted for Linux.
+ *
+ * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
+ *
+ * Adapted for SH by Stuart Menefy, Aug 1999
+ *
+ * 2003-02-12:	Support M32R by Takeo Takahashi
+ */
+
+/*
+ * gzip declarations
+ */
+#define STATIC static
+
+#undef memset
+#undef memcpy
+#define memzero(s, n)     memset ((s), 0, (n))
+
+static void error(char *m);
+
+#include "m32r_sio.c"
+
+static unsigned long free_mem_ptr;
+static unsigned long free_mem_end_ptr;
+
+#ifdef CONFIG_KERNEL_BZIP2
+void *memset(void *s, int c, size_t n)
+{
+	char *ss = s;
+
+	while (n--)
+	       	*ss++ = c;
+	return s;
+}
+#endif
+
+#ifdef CONFIG_KERNEL_GZIP
+void *memcpy(void *dest, const void *src, size_t n)
+{
+	char *d = dest;
+	const char *s = src;
+	while (n--)
+		*d++ = *s++;
+
+	return dest;
+}
+
+#define BOOT_HEAP_SIZE             0x10000
+#include "../../../../lib/decompress_inflate.c"
+#endif
+
+#ifdef CONFIG_KERNEL_BZIP2
+#define BOOT_HEAP_SIZE             0x400000
+#include "../../../../lib/decompress_bunzip2.c"
+#endif
+
+#ifdef CONFIG_KERNEL_LZMA
+#define BOOT_HEAP_SIZE             0x10000
+#include "../../../../lib/decompress_unlzma.c"
+#endif
+
+static void error(char *x)
+{
+	puts("\n\n");
+	puts(x);
+	puts("\n\n -- System halted");
+
+	while(1);	/* Halt */
+}
+
+void
+decompress_kernel(int mmu_on, unsigned char *zimage_data,
+		  unsigned int zimage_len, unsigned long heap)
+{
+	unsigned char *input_data = zimage_data;
+	int input_len = zimage_len;
+	unsigned char *output_data;
+
+	output_data = (unsigned char *)CONFIG_MEMORY_START + 0x2000
+		+ (mmu_on ? 0x80000000 : 0);
+	free_mem_ptr = heap;
+	free_mem_end_ptr = free_mem_ptr + BOOT_HEAP_SIZE;
+
+	puts("\nDecompressing Linux... ");
+	decompress(input_data, input_len, NULL, NULL, output_data, NULL, error);
+	puts("done.\nBooting the kernel.\n");
+}