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-rw-r--r--include/linux/decompress/bunzip2.h10
-rw-r--r--include/linux/decompress/generic.h33
-rw-r--r--include/linux/decompress/inflate.h13
-rw-r--r--include/linux/decompress/mm.h87
-rw-r--r--include/linux/decompress/unlzma.h12
5 files changed, 155 insertions, 0 deletions
diff --git a/include/linux/decompress/bunzip2.h b/include/linux/decompress/bunzip2.h
new file mode 100644
index 00000000000..115272137a9
--- /dev/null
+++ b/include/linux/decompress/bunzip2.h
@@ -0,0 +1,10 @@
+#ifndef DECOMPRESS_BUNZIP2_H
+#define DECOMPRESS_BUNZIP2_H
+
+int bunzip2(unsigned char *inbuf, int len,
+ int(*fill)(void*, unsigned int),
+ int(*flush)(void*, unsigned int),
+ unsigned char *output,
+ int *pos,
+ void(*error)(char *x));
+#endif
diff --git a/include/linux/decompress/generic.h b/include/linux/decompress/generic.h
new file mode 100644
index 00000000000..6dfb856327b
--- /dev/null
+++ b/include/linux/decompress/generic.h
@@ -0,0 +1,33 @@
+#ifndef DECOMPRESS_GENERIC_H
+#define DECOMPRESS_GENERIC_H
+
+/* Minimal chunksize to be read.
+ *Bzip2 prefers at least 4096
+ *Lzma prefers 0x10000 */
+#define COMPR_IOBUF_SIZE 4096
+
+typedef int (*decompress_fn) (unsigned char *inbuf, int len,
+ int(*fill)(void*, unsigned int),
+ int(*writebb)(void*, unsigned int),
+ unsigned char *output,
+ int *posp,
+ void(*error)(char *x));
+
+/* inbuf - input buffer
+ *len - len of pre-read data in inbuf
+ *fill - function to fill inbuf if empty
+ *writebb - function to write out outbug
+ *posp - if non-null, input position (number of bytes read) will be
+ * returned here
+ *
+ *If len != 0, the inbuf is initialized (with as much data), and fill
+ *should not be called
+ *If len = 0, the inbuf is allocated, but empty. Its size is IOBUF_SIZE
+ *fill should be called (repeatedly...) to read data, at most IOBUF_SIZE
+ */
+
+/* Utility routine to detect the decompression method */
+decompress_fn decompress_method(const unsigned char *inbuf, int len,
+ const char **name);
+
+#endif
diff --git a/include/linux/decompress/inflate.h b/include/linux/decompress/inflate.h
new file mode 100644
index 00000000000..f9b06ccc3e5
--- /dev/null
+++ b/include/linux/decompress/inflate.h
@@ -0,0 +1,13 @@
+#ifndef INFLATE_H
+#define INFLATE_H
+
+/* Other housekeeping constants */
+#define INBUFSIZ 4096
+
+int gunzip(unsigned char *inbuf, int len,
+ int(*fill)(void*, unsigned int),
+ int(*flush)(void*, unsigned int),
+ unsigned char *output,
+ int *pos,
+ void(*error_fn)(char *x));
+#endif
diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h
new file mode 100644
index 00000000000..12ff8c3f1d0
--- /dev/null
+++ b/include/linux/decompress/mm.h
@@ -0,0 +1,87 @@
+/*
+ * linux/compr_mm.h
+ *
+ * Memory management for pre-boot and ramdisk uncompressors
+ *
+ * Authors: Alain Knaff <alain@knaff.lu>
+ *
+ */
+
+#ifndef DECOMPR_MM_H
+#define DECOMPR_MM_H
+
+#ifdef STATIC
+
+/* Code active when included from pre-boot environment: */
+
+/* A trivial malloc implementation, adapted from
+ * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
+ */
+static unsigned long malloc_ptr;
+static int malloc_count;
+
+static void *malloc(int size)
+{
+ void *p;
+
+ if (size < 0)
+ error("Malloc error");
+ if (!malloc_ptr)
+ malloc_ptr = free_mem_ptr;
+
+ malloc_ptr = (malloc_ptr + 3) & ~3; /* Align */
+
+ p = (void *)malloc_ptr;
+ malloc_ptr += size;
+
+ if (free_mem_end_ptr && malloc_ptr >= free_mem_end_ptr)
+ error("Out of memory");
+
+ malloc_count++;
+ return p;
+}
+
+static void free(void *where)
+{
+ malloc_count--;
+ if (!malloc_count)
+ malloc_ptr = free_mem_ptr;
+}
+
+#define large_malloc(a) malloc(a)
+#define large_free(a) free(a)
+
+#define set_error_fn(x)
+
+#define INIT
+
+#else /* STATIC */
+
+/* Code active when compiled standalone for use when loading ramdisk: */
+
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/vmalloc.h>
+
+/* Use defines rather than static inline in order to avoid spurious
+ * warnings when not needed (indeed large_malloc / large_free are not
+ * needed by inflate */
+
+#define malloc(a) kmalloc(a, GFP_KERNEL)
+#define free(a) kfree(a)
+
+#define large_malloc(a) vmalloc(a)
+#define large_free(a) vfree(a)
+
+static void(*error)(char *m);
+#define set_error_fn(x) error = x;
+
+#define INIT __init
+#define STATIC
+
+#include <linux/init.h>
+
+#endif /* STATIC */
+
+#endif /* DECOMPR_MM_H */
diff --git a/include/linux/decompress/unlzma.h b/include/linux/decompress/unlzma.h
new file mode 100644
index 00000000000..7796538f1bf
--- /dev/null
+++ b/include/linux/decompress/unlzma.h
@@ -0,0 +1,12 @@
+#ifndef DECOMPRESS_UNLZMA_H
+#define DECOMPRESS_UNLZMA_H
+
+int unlzma(unsigned char *, int,
+ int(*fill)(void*, unsigned int),
+ int(*flush)(void*, unsigned int),
+ unsigned char *output,
+ int *posp,
+ void(*error)(char *x)
+ );
+
+#endif