import the U-Boot code and make it compile

10 files changed, 1282 insertions, 0 deletions

diff --git a/include/u-boot/crc.h b/include/u-boot/crc.h
new file mode 100644
index 0000000..788ef29
--- /dev/null
+++ b/include/u-boot/crc.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2009
+ * Marvell Semiconductor <www.marvell.com>
+ * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
+ */
+
+#ifndef _UBOOT_CRC_H
+#define _UBOOT_CRC_H
+
+/* lib/crc8.c */
+unsigned int crc8(unsigned int crc_start, const unsigned char *vptr, int len);
+
+/* lib/crc16.c - 16 bit CRC with polynomial x^16+x^12+x^5+1 (CRC-CCITT) */
+uint16_t crc16_ccitt(uint16_t crc_start, const unsigned char *s, int len);
+/**
+ * crc16_ccitt_wd_buf - Perform CRC16-CCIT on an input buffer and return the
+ *                      16-bit result (network byte-order) in an output buffer
+ *
+ * @in:	input buffer
+ * @len: input buffer length
+ * @out: output buffer (at least 2 bytes)
+ * @chunk_sz: ignored
+ */
+void crc16_ccitt_wd_buf(const uint8_t *in, uint len,
+			uint8_t *out, uint chunk_sz);
+
+/* lib/crc32.c */
+uint32_t crc32 (uint32_t, const unsigned char *, uint);
+uint32_t crc32_wd (uint32_t, const unsigned char *, uint, uint);
+uint32_t crc32_no_comp (uint32_t, const unsigned char *, uint);
+
+/**
+ * crc32_wd_buf - Perform CRC32 on a buffer and return result in buffer
+ *
+ * @input:	Input buffer
+ * @ilen:	Input buffer length
+ * @output:	Place to put checksum result (4 bytes)
+ * @chunk_sz:	Trigger watchdog after processing this many bytes
+ */
+void crc32_wd_buf(const unsigned char *input, uint ilen,
+		    unsigned char *output, uint chunk_sz);
+
+/* lib/crc32c.c */
+void crc32c_init(uint32_t *, uint32_t);
+uint32_t crc32c_cal(uint32_t, const char *, int, uint32_t *);
+
+#endif /* _UBOOT_CRC_H */
diff --git a/include/u-boot/md5.h b/include/u-boot/md5.h
new file mode 100644
index 0000000..e09c16a
--- /dev/null
+++ b/include/u-boot/md5.h
@@ -0,0 +1,34 @@
+/*
+ * This file was transplanted with slight modifications from Linux sources
+ * (fs/cifs/md5.h) into U-Boot by Bartlomiej Sieka <tur@semihalf.com>.
+ */
+
+#ifndef _MD5_H
+#define _MD5_H
+
+#include "compiler.h"
+
+struct MD5Context {
+	__u32 buf[4];
+	__u32 bits[2];
+	union {
+		unsigned char in[64];
+		__u32 in32[16];
+	};
+};
+
+/*
+ * Calculate and store in 'output' the MD5 digest of 'len' bytes at
+ * 'input'. 'output' must have enough space to hold 16 bytes.
+ */
+void md5 (unsigned char *input, int len, unsigned char output[16]);
+
+/*
+ * Calculate and store in 'output' the MD5 digest of 'len' bytes at 'input'.
+ * 'output' must have enough space to hold 16 bytes. If 'chunk' Trigger the
+ * watchdog every 'chunk_sz' bytes of input processed.
+ */
+void md5_wd (unsigned char *input, int len, unsigned char output[16],
+		unsigned int chunk_sz);
+
+#endif /* _MD5_H */
diff --git a/include/u-boot/rsa-checksum.h b/include/u-boot/rsa-checksum.h
new file mode 100644
index 0000000..02b814d
--- /dev/null
+++ b/include/u-boot/rsa-checksum.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2013, Andreas Oetken.
+ */
+
+#ifndef _RSA_CHECKSUM_H
+#define _RSA_CHECKSUM_H
+
+#include <errno.h>
+#include <image.h>
+#include <u-boot/sha1.h>
+#include <u-boot/sha256.h>
+
+/**
+ * hash_calculate() - Calculate hash over the data
+ *
+ * @name:  Name of algorithm to be used for hash calculation
+ * @region: Array having info of regions over which hash needs to be calculated
+ * @region_count: Number of regions in the region array
+ * @checksum: Buffer contanining the output hash
+ *
+ * @return 0 if OK, < 0 if error
+ */
+int hash_calculate(const char *name,
+		   const struct image_region region[], int region_count,
+		   uint8_t *checksum);
+
+#endif
diff --git a/include/u-boot/rsa-mod-exp.h b/include/u-boot/rsa-mod-exp.h
new file mode 100644
index 0000000..8a428c4
--- /dev/null
+++ b/include/u-boot/rsa-mod-exp.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ */
+
+#ifndef _RSA_MOD_EXP_H
+#define _RSA_MOD_EXP_H
+
+#include <errno.h>
+#include <image.h>
+
+/**
+ * struct key_prop - holder for a public key properties
+ *
+ * The struct has pointers to modulus (Typically called N),
+ * The inverse, R^2, exponent. These can be typecasted and
+ * used as byte arrays or converted to the required format
+ * as per requirement of RSA implementation.
+ */
+struct key_prop {
+	const void *rr;		/* R^2 can be treated as byte array */
+	const void *modulus;	/* modulus as byte array */
+	const void *public_exponent; /* public exponent as byte array */
+	uint32_t n0inv;		/* -1 / modulus[0] mod 2^32 */
+	int num_bits;		/* Key length in bits */
+	uint32_t exp_len;	/* Exponent length in number of uint8_t */
+};
+
+/**
+ * rsa_mod_exp_sw() - Perform RSA Modular Exponentiation in sw
+ *
+ * Operation: out[] = sig ^ exponent % modulus
+ *
+ * @sig:	RSA PKCS1.5 signature
+ * @sig_len:	Length of signature in number of bytes
+ * @node:	Node with RSA key elements like modulus, exponent, R^2, n0inv
+ * @out:	Result in form of byte array of len equal to sig_len
+ */
+int rsa_mod_exp_sw(const uint8_t *sig, uint32_t sig_len,
+		struct key_prop *node, uint8_t *out);
+
+int rsa_mod_exp(struct udevice *dev, const uint8_t *sig, uint32_t sig_len,
+		struct key_prop *node, uint8_t *out);
+
+#if defined(CONFIG_CMD_ZYNQ_RSA)
+int zynq_pow_mod(u32 *keyptr, u32 *inout);
+#endif
+
+/**
+ * struct struct mod_exp_ops - Driver model for RSA Modular Exponentiation
+ *				operations
+ *
+ * The uclass interface is implemented by all crypto devices which use
+ * driver model.
+ */
+struct mod_exp_ops {
+	/**
+	 * Perform Modular Exponentiation
+	 *
+	 * Operation: out[] = sig ^ exponent % modulus
+	 *
+	 * @dev:	RSA Device
+	 * @sig:	RSA PKCS1.5 signature
+	 * @sig_len:	Length of signature in number of bytes
+	 * @node:	Node with RSA key elements like modulus, exponent,
+	 *		R^2, n0inv
+	 * @out:	Result in form of byte array of len equal to sig_len
+	 *
+	 * This function computes exponentiation over the signature.
+	 * Returns: 0 if exponentiation is successful, or a negative value
+	 * if it wasn't.
+	 */
+	int (*mod_exp)(struct udevice *dev, const uint8_t *sig,
+			   uint32_t sig_len, struct key_prop *node,
+			   uint8_t *outp);
+};
+
+#endif
diff --git a/include/u-boot/rsa.h b/include/u-boot/rsa.h
new file mode 100644
index 0000000..2d3024d
--- /dev/null
+++ b/include/u-boot/rsa.h
@@ -0,0 +1,147 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2013, Google Inc.
+ *
+ * (C) Copyright 2008 Semihalf
+ *
+ * (C) Copyright 2000-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ */
+
+#ifndef _RSA_H
+#define _RSA_H
+
+#include <errno.h>
+#include <image.h>
+
+/**
+ * struct rsa_public_key - holder for a public key
+ *
+ * An RSA public key consists of a modulus (typically called N), the inverse
+ * and R^2, where R is 2^(# key bits).
+ */
+
+struct rsa_public_key {
+	uint len;		/* len of modulus[] in number of uint32_t */
+	uint32_t n0inv;		/* -1 / modulus[0] mod 2^32 */
+	uint32_t *modulus;	/* modulus as little endian array */
+	uint32_t *rr;		/* R^2 as little endian array */
+	uint64_t exponent;	/* public exponent */
+};
+
+struct image_sign_info;
+
+#if IMAGE_ENABLE_SIGN
+/**
+ * sign() - calculate and return signature for given input data
+ *
+ * @info:	Specifies key and FIT information
+ * @data:	Pointer to the input data
+ * @data_len:	Data length
+ * @sigp:	Set to an allocated buffer holding the signature
+ * @sig_len:	Set to length of the calculated hash
+ *
+ * This computes input data signature according to selected algorithm.
+ * Resulting signature value is placed in an allocated buffer, the
+ * pointer is returned as *sigp. The length of the calculated
+ * signature is returned via the sig_len pointer argument. The caller
+ * should free *sigp.
+ *
+ * @return: 0, on success, -ve on error
+ */
+int rsa_sign(struct image_sign_info *info,
+	     const struct image_region region[],
+	     int region_count, uint8_t **sigp, uint *sig_len);
+
+/**
+ * add_verify_data() - Add verification information to FDT
+ *
+ * Add public key information to the FDT node, suitable for
+ * verification at run-time. The information added depends on the
+ * algorithm being used.
+ *
+ * @info:	Specifies key and FIT information
+ * @keydest:	Destination FDT blob for public key data
+ * @return: 0, on success, -ENOSPC if the keydest FDT blob ran out of space,
+		other -ve value on error
+*/
+int rsa_add_verify_data(struct image_sign_info *info, void *keydest);
+#else
+static inline int rsa_sign(struct image_sign_info *info,
+		const struct image_region region[], int region_count,
+		uint8_t **sigp, uint *sig_len)
+{
+	return -ENXIO;
+}
+
+static inline int rsa_add_verify_data(struct image_sign_info *info,
+				      void *keydest)
+{
+	return -ENXIO;
+}
+#endif
+
+#if IMAGE_ENABLE_VERIFY
+/**
+ * rsa_verify() - Verify a signature against some data
+ *
+ * Verify a RSA PKCS1.5 signature against an expected hash.
+ *
+ * @info:	Specifies key and FIT information
+ * @data:	Pointer to the input data
+ * @data_len:	Data length
+ * @sig:	Signature
+ * @sig_len:	Number of bytes in signature
+ * @return 0 if verified, -ve on error
+ */
+int rsa_verify(struct image_sign_info *info,
+	       const struct image_region region[], int region_count,
+	       uint8_t *sig, uint sig_len);
+
+int padding_pkcs_15_verify(struct image_sign_info *info,
+			   uint8_t *msg, int msg_len,
+			   const uint8_t *hash, int hash_len);
+
+#ifdef CONFIG_FIT_ENABLE_RSASSA_PSS_SUPPORT
+int padding_pss_verify(struct image_sign_info *info,
+		       uint8_t *msg, int msg_len,
+		       const uint8_t *hash, int hash_len);
+#endif /* CONFIG_FIT_ENABLE_RSASSA_PSS_SUPPORT */
+#else
+static inline int rsa_verify(struct image_sign_info *info,
+		const struct image_region region[], int region_count,
+		uint8_t *sig, uint sig_len)
+{
+	return -ENXIO;
+}
+
+static inline int padding_pkcs_15_verify(struct image_sign_info *info,
+					 uint8_t *msg, int msg_len,
+					 const uint8_t *hash, int hash_len)
+{
+	return -ENXIO;
+}
+
+#ifdef CONFIG_FIT_ENABLE_RSASSA_PSS_SUPPORT
+static inline int padding_pss_verify(struct image_sign_info *info,
+				     uint8_t *msg, int msg_len,
+				     const uint8_t *hash, int hash_len)
+{
+	return -ENXIO;
+}
+#endif /* CONFIG_FIT_ENABLE_RSASSA_PSS_SUPPORT */
+#endif
+
+#define RSA_DEFAULT_PADDING_NAME		"pkcs-1.5"
+
+#define RSA2048_BYTES	(2048 / 8)
+#define RSA4096_BYTES	(4096 / 8)
+
+/* This is the minimum/maximum key size we support, in bits */
+#define RSA_MIN_KEY_BITS	2048
+#define RSA_MAX_KEY_BITS	4096
+
+/* This is the maximum signature length that we support, in bits */
+#define RSA_MAX_SIG_BITS	4096
+
+#endif
diff --git a/include/u-boot/sha1.h b/include/u-boot/sha1.h
new file mode 100644
index 0000000..283f103
--- /dev/null
+++ b/include/u-boot/sha1.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/**
+ * \file sha1.h
+ * based from http://xyssl.org/code/source/sha1/
+ *  FIPS-180-1 compliant SHA-1 implementation
+ *
+ *  Copyright (C) 2003-2006  Christophe Devine
+ */
+/*
+ *  The SHA-1 standard was published by NIST in 1993.
+ *
+ *  http://www.itl.nist.gov/fipspubs/fip180-1.htm
+ */
+#ifndef _SHA1_H
+#define _SHA1_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SHA1_SUM_POS	-0x20
+#define SHA1_SUM_LEN	20
+#define SHA1_DER_LEN	15
+
+extern const uint8_t sha1_der_prefix[];
+
+/**
+ * \brief	   SHA-1 context structure
+ */
+typedef struct
+{
+    unsigned long total[2];	/*!< number of bytes processed	*/
+    unsigned long state[5];	/*!< intermediate digest state	*/
+    unsigned char buffer[64];	/*!< data block being processed */
+}
+sha1_context;
+
+/**
+ * \brief	   SHA-1 context setup
+ *
+ * \param ctx	   SHA-1 context to be initialized
+ */
+void sha1_starts( sha1_context *ctx );
+
+/**
+ * \brief	   SHA-1 process buffer
+ *
+ * \param ctx	   SHA-1 context
+ * \param input    buffer holding the  data
+ * \param ilen	   length of the input data
+ */
+void sha1_update(sha1_context *ctx, const unsigned char *input,
+		 unsigned int ilen);
+
+/**
+ * \brief	   SHA-1 final digest
+ *
+ * \param ctx	   SHA-1 context
+ * \param output   SHA-1 checksum result
+ */
+void sha1_finish( sha1_context *ctx, unsigned char output[20] );
+
+/**
+ * \brief	   Output = SHA-1( input buffer )
+ *
+ * \param input    buffer holding the  data
+ * \param ilen	   length of the input data
+ * \param output   SHA-1 checksum result
+ */
+void sha1_csum(const unsigned char *input, unsigned int ilen,
+		unsigned char *output);
+
+/**
+ * \brief	   Output = SHA-1( input buffer ), with watchdog triggering
+ *
+ * \param input    buffer holding the  data
+ * \param ilen	   length of the input data
+ * \param output   SHA-1 checksum result
+ * \param chunk_sz watchdog triggering period (in bytes of input processed)
+ */
+void sha1_csum_wd(const unsigned char *input, unsigned int ilen,
+		unsigned char *output, unsigned int chunk_sz);
+
+/**
+ * \brief	   Output = HMAC-SHA-1( input buffer, hmac key )
+ *
+ * \param key	   HMAC secret key
+ * \param keylen   length of the HMAC key
+ * \param input    buffer holding the  data
+ * \param ilen	   length of the input data
+ * \param output   HMAC-SHA-1 result
+ */
+void sha1_hmac(const unsigned char *key, int keylen,
+		const unsigned char *input, unsigned int ilen,
+		unsigned char *output);
+
+/**
+ * \brief	   Checkup routine
+ *
+ * \return	   0 if successful, or 1 if the test failed
+ */
+int sha1_self_test( void );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* sha1.h */
diff --git a/include/u-boot/sha256.h b/include/u-boot/sha256.h
new file mode 100644
index 0000000..9aa1251
--- /dev/null
+++ b/include/u-boot/sha256.h
@@ -0,0 +1,25 @@
+#ifndef _SHA256_H
+#define _SHA256_H
+
+#define SHA256_SUM_LEN	32
+#define SHA256_DER_LEN	19
+
+extern const uint8_t sha256_der_prefix[];
+
+/* Reset watchdog each time we process this many bytes */
+#define CHUNKSZ_SHA256	(64 * 1024)
+
+typedef struct {
+	uint32_t total[2];
+	uint32_t state[8];
+	uint8_t buffer[64];
+} sha256_context;
+
+void sha256_starts(sha256_context * ctx);
+void sha256_update(sha256_context *ctx, const uint8_t *input, uint32_t length);
+void sha256_finish(sha256_context * ctx, uint8_t digest[SHA256_SUM_LEN]);
+
+void sha256_csum_wd(const unsigned char *input, unsigned int ilen,
+		unsigned char *output, unsigned int chunk_sz);
+
+#endif /* _SHA256_H */
diff --git a/include/u-boot/u-boot.lds.h b/include/u-boot/u-boot.lds.h
new file mode 100644
index 0000000..ead37d0
--- /dev/null
+++ b/include/u-boot/u-boot.lds.h
@@ -0,0 +1,25 @@
+/*
+ * Linker script helper macros
+ *
+ * Copyright (c) 2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __U_BOOT_LDS__
+#define __U_BOOT_LDS__
+
+/* See if the linker version is at least the specified version */
+#define LD_AT_LEAST(major, minor) \
+	((major > LD_MAJOR) || (major == LD_MAJOR && minor <= LD_MINOR))
+
+/*
+ * Linker versions prior to 2.16 don't understand the builtin
+ * functions SORT_BY_ALIGNMENT() and SORT_BY_NAME(), so disable these
+ */
+#if !LD_AT_LEAST(2, 16)
+# define SORT_BY_ALIGNMENT(x) x
+# define SORT_BY_NAME(x) x
+#endif
+
+#endif
diff --git a/include/u-boot/variadic-macro.h b/include/u-boot/variadic-macro.h
new file mode 100644
index 0000000..cb815d0
--- /dev/null
+++ b/include/u-boot/variadic-macro.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Helper for work with variadic macros
+ *
+ * 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz
+ */
+
+#ifndef __VARIADIC_MACRO_H__
+#define __VARIADIC_MACRO_H__
+
+#define _VM_GET_NTH_ARG(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, \
+	_14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, \
+	_28, _29, _30, _31, _32, N, ...) N
+
+#define _VM_HELP_0(_call, ...)
+#define _VM_HELP_1(_call, x, ...) _call(x)
+#define _VM_HELP_2(_call, x, ...) _call(x) _VM_HELP_1(_call, __VA_ARGS__)
+#define _VM_HELP_3(_call, x, ...) _call(x) _VM_HELP_2(_call, __VA_ARGS__)
+#define _VM_HELP_4(_call, x, ...) _call(x) _VM_HELP_3(_call, __VA_ARGS__)
+#define _VM_HELP_5(_call, x, ...) _call(x) _VM_HELP_4(_call, __VA_ARGS__)
+#define _VM_HELP_6(_call, x, ...) _call(x) _VM_HELP_5(_call, __VA_ARGS__)
+#define _VM_HELP_7(_call, x, ...) _call(x) _VM_HELP_6(_call, __VA_ARGS__)
+#define _VM_HELP_8(_call, x, ...) _call(x) _VM_HELP_7(_call, __VA_ARGS__)
+#define _VM_HELP_9(_call, x, ...) _call(x) _VM_HELP_8(_call, __VA_ARGS__)
+#define _VM_HELP_10(_call, x, ...) _call(x) _VM_HELP_9(_call, __VA_ARGS__)
+#define _VM_HELP_11(_call, x, ...) _call(x) _VM_HELP_10(_call, __VA_ARGS__)
+#define _VM_HELP_12(_call, x, ...) _call(x) _VM_HELP_11(_call, __VA_ARGS__)
+#define _VM_HELP_13(_call, x, ...) _call(x) _VM_HELP_12(_call, __VA_ARGS__)
+#define _VM_HELP_14(_call, x, ...) _call(x) _VM_HELP_13(_call, __VA_ARGS__)
+#define _VM_HELP_15(_call, x, ...) _call(x) _VM_HELP_14(_call, __VA_ARGS__)
+#define _VM_HELP_16(_call, x, ...) _call(x) _VM_HELP_15(_call, __VA_ARGS__)
+#define _VM_HELP_17(_call, x, ...) _call(x) _VM_HELP_16(_call, __VA_ARGS__)
+#define _VM_HELP_18(_call, x, ...) _call(x) _VM_HELP_17(_call, __VA_ARGS__)
+#define _VM_HELP_19(_call, x, ...) _call(x) _VM_HELP_18(_call, __VA_ARGS__)
+#define _VM_HELP_20(_call, x, ...) _call(x) _VM_HELP_19(_call, __VA_ARGS__)
+#define _VM_HELP_21(_call, x, ...) _call(x) _VM_HELP_20(_call, __VA_ARGS__)
+#define _VM_HELP_22(_call, x, ...) _call(x) _VM_HELP_21(_call, __VA_ARGS__)
+#define _VM_HELP_23(_call, x, ...) _call(x) _VM_HELP_22(_call, __VA_ARGS__)
+#define _VM_HELP_24(_call, x, ...) _call(x) _VM_HELP_23(_call, __VA_ARGS__)
+#define _VM_HELP_25(_call, x, ...) _call(x) _VM_HELP_24(_call, __VA_ARGS__)
+#define _VM_HELP_26(_call, x, ...) _call(x) _VM_HELP_25(_call, __VA_ARGS__)
+#define _VM_HELP_27(_call, x, ...) _call(x) _VM_HELP_26(_call, __VA_ARGS__)
+#define _VM_HELP_28(_call, x, ...) _call(x) _VM_HELP_27(_call, __VA_ARGS__)
+#define _VM_HELP_29(_call, x, ...) _call(x) _VM_HELP_28(_call, __VA_ARGS__)
+#define _VM_HELP_30(_call, x, ...) _call(x) _VM_HELP_29(_call, __VA_ARGS__)
+#define _VM_HELP_31(_call, x, ...) _call(x) _VM_HELP_30(_call, __VA_ARGS__)
+
+#define CALL_MACRO_FOR_EACH(x, ...)					 \
+	_VM_GET_NTH_ARG("", ##__VA_ARGS__, _VM_HELP_31, _VM_HELP_30,	 \
+	_VM_HELP_29, _VM_HELP_28, _VM_HELP_27, _VM_HELP_26, _VM_HELP_25, \
+	_VM_HELP_24, _VM_HELP_23, _VM_HELP_22, _VM_HELP_21, _VM_HELP_20, \
+	_VM_HELP_19, _VM_HELP_18, _VM_HELP_17, _VM_HELP_16, _VM_HELP_15, \
+	_VM_HELP_14, _VM_HELP_13, _VM_HELP_12, _VM_HELP_11, _VM_HELP_10, \
+	_VM_HELP_9, _VM_HELP_8, _VM_HELP_7, _VM_HELP_6, _VM_HELP_5,	 \
+	_VM_HELP_4, _VM_HELP_3, _VM_HELP_2, _VM_HELP_1,			 \
+	_VM_HELP_0)(x, __VA_ARGS__)
+
+#endif /* __VARIADIC_MACRO_H__ */
diff --git a/include/u-boot/zlib.h b/include/u-boot/zlib.h
new file mode 100644
index 0000000..e23ceb5
--- /dev/null
+++ b/include/u-boot/zlib.h
@@ -0,0 +1,731 @@
+/*
+ * This file is derived from zlib.h and zconf.h from the zlib-1.2.3
+ * distribution by Jean-loup Gailly and Mark Adler, with some additions
+ * by Paul Mackerras to aid in implementing Deflate compression and
+ * decompression for PPP packets.
+ */
+
+ /*
+  * ==FILEVERSION 960122==
+  *
+  * This marker is used by the Linux installation script to determine
+  * whether an up-to-date version of this file is already installed.
+  */
+
+/* zlib.h -- interface of the 'zlib' general purpose compression library
+  version 1.2.3, July 18th, 2005
+
+  Copyright (C) 1995-2005 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
+
+
+  The data format used by the zlib library is described by RFCs (Request for
+  Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt
+  (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
+*/
+
+#ifndef ZLIB_H
+#define ZLIB_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ZLIB_VERSION "1.2.3"
+#define ZLIB_VERNUM 0x1230
+
+/* #include "zconf.h" */        /* included directly here */
+/* zconf.h -- configuration of the zlib compression library
+ * Copyright (C) 1995-2005 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* Begin of new zconf.h */
+/*
+ * If you *really* need a unique prefix for all types and library functions,
+ * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
+ */
+#ifdef Z_PREFIX
+#  define deflateInit_          z_deflateInit_
+#  define deflate               z_deflate
+#  define deflateEnd            z_deflateEnd
+#  define inflateInit_          z_inflateInit_
+#  define inflate               z_inflate
+#  define inflateEnd            z_inflateEnd
+#  define deflateInit2_         z_deflateInit2_
+#  define deflateSetDictionary  z_deflateSetDictionary
+#  define deflateCopy           z_deflateCopy
+#  define deflateReset          z_deflateReset
+#  define deflateParams         z_deflateParams
+#  define deflateBound          z_deflateBound
+#  define deflatePrime          z_deflatePrime
+#  define inflateInit2_         z_inflateInit2_
+#  define inflateSetDictionary  z_inflateSetDictionary
+#  define inflateSync           z_inflateSync
+#  define inflateSyncPoint      z_inflateSyncPoint
+#  define inflateCopy           z_inflateCopy
+#  define inflateReset          z_inflateReset
+#  define inflateBack           z_inflateBack
+#  define inflateBackEnd        z_inflateBackEnd
+#  define compress              z_compress
+#  define compress2             z_compress2
+#  define compressBound         z_compressBound
+#  define uncompress            z_uncompress
+#  define adler32               z_adler32
+#  define crc32                 z_crc32
+#  define get_crc_table         z_get_crc_table
+#  define zError                z_zError
+
+#  define alloc_func            z_alloc_func
+#  define free_func             z_free_func
+#  define in_func               z_in_func
+#  define out_func              z_out_func
+#  define Byte                  z_Byte
+#  define uInt                  z_uInt
+#  define uLong                 z_uLong
+#  define Bytef                 z_Bytef
+#  define charf                 z_charf
+#  define intf                  z_intf
+#  define uIntf                 z_uIntf
+#  define uLongf                z_uLongf
+#  define voidpf                z_voidpf
+#  define voidp                 z_voidp
+#endif
+
+#if defined(__MSDOS__) && !defined(MSDOS)
+#  define MSDOS
+#endif
+#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
+#  define OS2
+#endif
+#if defined(_WINDOWS) && !defined(WINDOWS)
+#  define WINDOWS
+#endif
+#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
+#  ifndef WIN32
+#    define WIN32
+#  endif
+#endif
+#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
+#  if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
+#    ifndef SYS16BIT
+#      define SYS16BIT
+#    endif
+#  endif
+#endif
+
+/*
+ * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
+ * than 64k bytes at a time (needed on systems with 16-bit int).
+ */
+#ifdef SYS16BIT
+#  define MAXSEG_64K
+#endif
+#ifdef MSDOS
+#  define UNALIGNED_OK
+#endif
+
+#ifdef __STDC_VERSION__
+#  ifndef STDC
+#    define STDC
+#  endif
+#  if __STDC_VERSION__ >= 199901L
+#    ifndef STDC99
+#      define STDC99
+#    endif
+#  endif
+#endif
+#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
+#  define STDC
+#endif
+#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
+#  define STDC
+#endif
+#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
+#  define STDC
+#endif
+#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
+#  define STDC
+#endif
+
+#if defined(__OS400__) && !defined(STDC)    /* iSeries (formerly AS/400). */
+#  define STDC
+#endif
+
+#ifndef STDC
+#  ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
+#    define const       /* note: need a more gentle solution here */
+#  endif
+#endif
+
+/* Some Mac compilers merge all .h files incorrectly: */
+#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
+#  define NO_DUMMY_DECL
+#endif
+
+/* Maximum value for memLevel in deflateInit2 */
+#ifndef MAX_MEM_LEVEL
+#  ifdef MAXSEG_64K
+#    define MAX_MEM_LEVEL 8
+#  else
+#    define MAX_MEM_LEVEL 9
+#  endif
+#endif
+
+/* Maximum value for windowBits in deflateInit2 and inflateInit2.
+ * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
+ * created by gzip. (Files created by minigzip can still be extracted by
+ * gzip.)
+ */
+#ifndef MAX_WBITS
+#  define MAX_WBITS   15 /* 32K LZ77 window */
+#endif
+
+/* The memory requirements for deflate are (in bytes):
+            (1 << (windowBits+2)) +  (1 << (memLevel+9))
+ that is: 128K for windowBits=15  +  128K for memLevel = 8  (default values)
+ plus a few kilobytes for small objects. For example, if you want to reduce
+ the default memory requirements from 256K to 128K, compile with
+     make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
+ Of course this will generally degrade compression (there's no free lunch).
+
+   The memory requirements for inflate are (in bytes) 1 << windowBits
+ that is, 32K for windowBits=15 (default value) plus a few kilobytes
+ for small objects.
+*/
+
+                        /* Type declarations */
+
+#ifndef OF /* function prototypes */
+#  ifdef STDC
+#    define OF(args)  args
+#  else
+#    define OF(args)  ()
+#  endif
+#endif
+
+/* The following definitions for FAR are needed only for MSDOS mixed
+ * model programming (small or medium model with some far allocations).
+ * This was tested only with MSC; for other MSDOS compilers you may have
+ * to define NO_MEMCPY in zutil.h.  If you don't need the mixed model,
+ * just define FAR to be empty.
+ */
+#ifdef SYS16BIT
+#  if defined(M_I86SM) || defined(M_I86MM)
+     /* MSC small or medium model */
+#    define SMALL_MEDIUM
+#    ifdef _MSC_VER
+#      define FAR _far
+#    else
+#      define FAR far
+#    endif
+#  endif
+#  if (defined(__SMALL__) || defined(__MEDIUM__))
+     /* Turbo C small or medium model */
+#    define SMALL_MEDIUM
+#    ifdef __BORLANDC__
+#      define FAR _far
+#    else
+#      define FAR far
+#    endif
+#  endif
+#endif
+
+#if defined(WINDOWS) || defined(WIN32)
+   /* If building or using zlib as a DLL, define ZLIB_DLL.
+    * This is not mandatory, but it offers a little performance increase.
+    */
+#  ifdef ZLIB_DLL
+#    if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
+#      ifdef ZLIB_INTERNAL
+#        define ZEXTERN extern __declspec(dllexport)
+#      else
+#        define ZEXTERN extern __declspec(dllimport)
+#      endif
+#    endif
+#  endif  /* ZLIB_DLL */
+   /* If building or using zlib with the WINAPI/WINAPIV calling convention,
+    * define ZLIB_WINAPI.
+    * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
+    */
+#  ifdef ZLIB_WINAPI
+#    ifdef FAR
+#      undef FAR
+#    endif
+#    include <windows.h>
+     /* No need for _export, use ZLIB.DEF instead. */
+     /* For complete Windows compatibility, use WINAPI, not __stdcall. */
+#    define ZEXPORT WINAPI
+#    ifdef WIN32
+#      define ZEXPORTVA WINAPIV
+#    else
+#      define ZEXPORTVA FAR CDECL
+#    endif
+#  endif
+#endif
+
+#if defined (__BEOS__)
+#  ifdef ZLIB_DLL
+#    ifdef ZLIB_INTERNAL
+#      define ZEXPORT   __declspec(dllexport)
+#      define ZEXPORTVA __declspec(dllexport)
+#    else
+#      define ZEXPORT   __declspec(dllimport)
+#      define ZEXPORTVA __declspec(dllimport)
+#    endif
+#  endif
+#endif
+
+#ifndef ZEXTERN
+#  define ZEXTERN extern
+#endif
+#ifndef ZEXPORT
+#  define ZEXPORT
+#endif
+#ifndef ZEXPORTVA
+#  define ZEXPORTVA
+#endif
+
+#ifndef FAR
+#  define FAR
+#endif
+
+#if !defined(__MACTYPES__)
+typedef unsigned char  Byte;  /* 8 bits */
+#endif
+typedef unsigned int   uInt;  /* 16 bits or more */
+typedef unsigned long  uLong; /* 32 bits or more */
+
+#ifdef SMALL_MEDIUM
+   /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
+#  define Bytef Byte FAR
+#else
+   typedef Byte  FAR Bytef;
+#endif
+typedef char  FAR charf;
+typedef int   FAR intf;
+typedef uInt  FAR uIntf;
+typedef uLong FAR uLongf;
+
+#ifdef STDC
+   typedef void const *voidpc;
+   typedef void FAR   *voidpf;
+   typedef void       *voidp;
+#else
+   typedef Byte const *voidpc;
+   typedef Byte FAR   *voidpf;
+   typedef Byte       *voidp;
+#endif
+
+#  ifdef VMS
+#    include <unixio.h>   /* for off_t */
+#  endif
+#  define z_off_t off_t
+#ifndef SEEK_SET
+#  define SEEK_SET        0       /* Seek from beginning of file.  */
+#  define SEEK_CUR        1       /* Seek from current position.  */
+#  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
+#endif
+#ifndef z_off_t
+#  define z_off_t long
+#endif
+
+#if defined(__OS400__)
+#  define NO_vsnprintf
+#endif
+
+#if defined(__MVS__)
+#  define NO_vsnprintf
+#  ifdef FAR
+#    undef FAR
+#  endif
+#endif
+
+/* MVS linker does not support external names larger than 8 bytes */
+#if defined(__MVS__)
+#   pragma map(deflateInit_,"DEIN")
+#   pragma map(deflateInit2_,"DEIN2")
+#   pragma map(deflateEnd,"DEEND")
+#   pragma map(deflateBound,"DEBND")
+#   pragma map(inflateInit_,"ININ")
+#   pragma map(inflateInit2_,"ININ2")
+#   pragma map(inflateEnd,"INEND")
+#   pragma map(inflateSync,"INSY")
+#   pragma map(inflateSetDictionary,"INSEDI")
+#   pragma map(compressBound,"CMBND")
+#   pragma map(inflate_table,"INTABL")
+#   pragma map(inflate_fast,"INFA")
+#   pragma map(inflate_copyright,"INCOPY")
+#endif
+/* End of new zconf.h */
+
+/*
+     The 'zlib' compression library provides in-memory compression and
+  decompression functions, including integrity checks of the uncompressed
+  data.  This version of the library supports only one compression method
+  (deflation) but other algorithms will be added later and will have the same
+  stream interface.
+
+     Compression can be done in a single step if the buffers are large
+  enough (for example if an input file is mmap'ed), or can be done by
+  repeated calls of the compression function.  In the latter case, the
+  application must provide more input and/or consume the output
+  (providing more output space) before each call.
+
+     The compressed data format used by default by the in-memory functions is
+  the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
+  around a deflate stream, which is itself documented in RFC 1951.
+
+     The library also supports reading and writing files in gzip (.gz) format
+  with an interface similar to that of stdio using the functions that start
+  with "gz".  The gzip format is different from the zlib format.  gzip is a
+  gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.
+
+     This library can optionally read and write gzip streams in memory as well.
+
+     The zlib format was designed to be compact and fast for use in memory
+  and on communications channels.  The gzip format was designed for single-
+  file compression on file systems, has a larger header than zlib to maintain
+  directory information, and uses a different, slower check method than zlib.
+
+     The library does not install any signal handler. The decoder checks
+  the consistency of the compressed data, so the library should never
+  crash even in case of corrupted input.
+*/
+
+typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
+typedef void   (*free_func)  OF((voidpf opaque, voidpf address, uInt size));
+typedef void   (*cb_func)    OF((Bytef *buf, uInt len));
+
+struct internal_state;
+
+typedef struct z_stream_s {
+	Bytef	*next_in; /* next input byte */
+	uInt	avail_in; /* number of bytes available at next_in */
+	uLong	total_in; /* total nb of input bytes read so far */
+	Bytef	*next_out; /* next output byte should be put there */
+	uInt	avail_out; /* remaining free space at next_out */
+	uLong	total_out; /* total nb of bytes output so far */
+	char	*msg;	/* last error message, NULL if no error */
+	struct	internal_state FAR *state; /* not visible by applications */
+	alloc_func	zalloc;	/* used to allocate the internal state */
+	free_func	zfree;	/* used to free the internal state */
+	voidpf	opaque;	/* private data object passed to zalloc and zfree */
+	int	data_type;	/* best guess about the data type:
+					binary or text */
+	cb_func	outcb;	/* called regularly just before blocks of output */
+	uLong	adler;	/* adler32 value of the uncompressed data */
+	uLong	reserved;	/* reserved for future use */
+} z_stream;
+
+typedef z_stream FAR *z_streamp;
+
+/*
+     gzip header information passed to and from zlib routines.  See RFC 1952
+  for more details on the meanings of these fields.
+*/
+typedef struct gz_header_s {
+	int	text;	/* true if compressed data believed to be text */
+	uLong	time;	/* modification time */
+	int	xflags;	/* extra flags (not used when writing a gzip file) */
+	int	os;	/* operating system */
+	Bytef	*extra;	/* pointer to extra field or Z_NULL if none */
+	uInt	extra_len; /* extra field length (valid if extra != Z_NULL) */
+	uInt	extra_max; /* space at extra (only when reading header) */
+	Bytef	*name; /* pointer to zero-terminated file name or Z_NULL */
+	uInt	name_max; /* space at name (only when reading header) */
+	Bytef	*comment; /* pointer to zero-terminated comment or Z_NULL */
+	uInt	comm_max; /* space at comment (only when reading header) */
+	int	hcrc; /* true if there was or will be a header crc */
+	int	done; /* true when done reading gzip header (not used
+			when writing a gzip file) */
+} gz_header;
+
+typedef gz_header FAR *gz_headerp;
+
+                        /* constants */
+#define Z_NO_FLUSH      0
+#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */
+#define Z_SYNC_FLUSH    2
+#define Z_FULL_FLUSH    3
+#define Z_FINISH        4
+#define Z_BLOCK         5
+/* Allowed flush values; see deflate() and inflate() below for details */
+
+#define Z_OK            0
+#define Z_STREAM_END    1
+#define Z_NEED_DICT     2
+#define Z_ERRNO        (-1)
+#define Z_STREAM_ERROR (-2)
+#define Z_DATA_ERROR   (-3)
+#define Z_MEM_ERROR    (-4)
+#define Z_BUF_ERROR    (-5)
+#define Z_VERSION_ERROR (-6)
+/* Return codes for the compression/decompression functions. Negative
+ * values are errors, positive values are used for special but normal events.
+ */
+
+#define Z_NO_COMPRESSION         0
+#define Z_BEST_SPEED             1
+#define Z_BEST_COMPRESSION       9
+#define Z_DEFAULT_COMPRESSION  (-1)
+/* compression levels */
+
+#define Z_FILTERED            1
+#define Z_HUFFMAN_ONLY        2
+#define Z_RLE                 3
+#define Z_FIXED               4
+#define Z_DEFAULT_STRATEGY    0
+/* compression strategy; see deflateInit2() below for details */
+
+#define Z_BINARY   0
+#define Z_TEXT     1
+#define Z_ASCII    Z_TEXT   /* for compatibility with 1.2.2 and earlier */
+#define Z_UNKNOWN  2
+/* Possible values of the data_type field (though see inflate()) */
+
+#define Z_DEFLATED   8
+/* The deflate compression method (the only one supported in this version) */
+
+#define Z_NULL  (void *)0  /* for initializing zalloc, zfree, opaque */
+
+                        /* basic functions */
+
+/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
+   If the first character differs, the library code actually used is
+   not compatible with the zlib.h header file used by the application.
+   This check is automatically made by deflateInit and inflateInit.
+   */
+
+ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
+ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
+			const char *version, int stream_size));
+ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
+ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int  level, int  method,
+			int windowBits, int memLevel,
+			int strategy, const char *version,
+			int stream_size));
+ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
+ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
+			const Bytef *dictionary,
+			uInt  dictLength));
+ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
+			gz_headerp head));
+ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
+			int bits,
+			int value));
+ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
+			int level,
+			int strategy));
+ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
+			int good_length,
+			int max_lazy,
+			int nice_length,
+			int max_chain));
+ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
+			uLong sourceLen));
+ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
+			z_streamp source));
+
+
+ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
+			const char *version, int stream_size));
+ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
+/*
+    inflate decompresses as much data as possible, and stops when the input
+  buffer becomes empty or the output buffer becomes full. It may introduce
+  some output latency (reading input without producing any output) except when
+  forced to flush.
+
+  The detailed semantics are as follows. inflate performs one or both of the
+  following actions:
+
+  - Decompress more input starting at next_in and update next_in and avail_in
+    accordingly. If not all input can be processed (because there is not
+    enough room in the output buffer), next_in is updated and processing
+    will resume at this point for the next call of inflate().
+
+  - Provide more output starting at next_out and update next_out and avail_out
+    accordingly.  inflate() provides as much output as possible, until there
+    is no more input data or no more space in the output buffer (see below
+    about the flush parameter).
+
+  Before the call of inflate(), the application should ensure that at least
+  one of the actions is possible, by providing more input and/or consuming
+  more output, and updating the next_* and avail_* values accordingly.
+  The application can consume the uncompressed output when it wants, for
+  example when the output buffer is full (avail_out == 0), or after each
+  call of inflate(). If inflate returns Z_OK and with zero avail_out, it
+  must be called again after making room in the output buffer because there
+  might be more output pending.
+
+    The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH,
+  Z_FINISH, or Z_BLOCK. Z_SYNC_FLUSH requests that inflate() flush as much
+  output as possible to the output buffer. Z_BLOCK requests that inflate() stop
+  if and when it gets to the next deflate block boundary. When decoding the
+  zlib or gzip format, this will cause inflate() to return immediately after
+  the header and before the first block. When doing a raw inflate, inflate()
+  will go ahead and process the first block, and will return when it gets to
+  the end of that block, or when it runs out of data.
+
+    The Z_BLOCK option assists in appending to or combining deflate streams.
+  Also to assist in this, on return inflate() will set strm->data_type to the
+  number of unused bits in the last byte taken from strm->next_in, plus 64
+  if inflate() is currently decoding the last block in the deflate stream,
+  plus 128 if inflate() returned immediately after decoding an end-of-block
+  code or decoding the complete header up to just before the first byte of the
+  deflate stream. The end-of-block will not be indicated until all of the
+  uncompressed data from that block has been written to strm->next_out.  The
+  number of unused bits may in general be greater than seven, except when
+  bit 7 of data_type is set, in which case the number of unused bits will be
+  less than eight.
+
+    inflate() should normally be called until it returns Z_STREAM_END or an
+  error. However if all decompression is to be performed in a single step
+  (a single call of inflate), the parameter flush should be set to
+  Z_FINISH. In this case all pending input is processed and all pending
+  output is flushed; avail_out must be large enough to hold all the
+  uncompressed data. (The size of the uncompressed data may have been saved
+  by the compressor for this purpose.) The next operation on this stream must
+  be inflateEnd to deallocate the decompression state. The use of Z_FINISH
+  is never required, but can be used to inform inflate that a faster approach
+  may be used for the single inflate() call.
+
+     In this implementation, inflate() always flushes as much output as
+  possible to the output buffer, and always uses the faster approach on the
+  first call. So the only effect of the flush parameter in this implementation
+  is on the return value of inflate(), as noted below, or when it returns early
+  because Z_BLOCK is used.
+
+     If a preset dictionary is needed after this call (see inflateSetDictionary
+  below), inflate sets strm->adler to the adler32 checksum of the dictionary
+  chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
+  strm->adler to the adler32 checksum of all output produced so far (that is,
+  total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
+  below. At the end of the stream, inflate() checks that its computed adler32
+  checksum is equal to that saved by the compressor and returns Z_STREAM_END
+  only if the checksum is correct.
+
+    inflate() will decompress and check either zlib-wrapped or gzip-wrapped
+  deflate data.  The header type is detected automatically.  Any information
+  contained in the gzip header is not retained, so applications that need that
+  information should instead use raw inflate, see inflateInit2() below, or
+  inflateBack() and perform their own processing of the gzip header and
+  trailer.
+
+    inflate() returns Z_OK if some progress has been made (more input processed
+  or more output produced), Z_STREAM_END if the end of the compressed data has
+  been reached and all uncompressed output has been produced, Z_NEED_DICT if a
+  preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
+  corrupted (input stream not conforming to the zlib format or incorrect check
+  value), Z_STREAM_ERROR if the stream structure was inconsistent (for example
+  if next_in or next_out was NULL), Z_MEM_ERROR if there was not enough memory,
+  Z_BUF_ERROR if no progress is possible or if there was not enough room in the
+  output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and
+  inflate() can be called again with more input and more output space to
+  continue decompressing. If Z_DATA_ERROR is returned, the application may then
+  call inflateSync() to look for a good compression block if a partial recovery
+  of the data is desired.
+*/
+
+ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
+/*
+     All dynamically allocated data structures for this stream are freed.
+   This function discards any unprocessed input and does not flush any
+   pending output.
+
+     inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
+   was inconsistent. In the error case, msg may be set but then points to a
+   static string (which must not be deallocated).
+*/
+
+                        /* Advanced functions */
+
+ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
+
+                        /* utility functions */
+
+/*
+     The following utility functions are implemented on top of the
+   basic stream-oriented functions. To simplify the interface, some
+   default options are assumed (compression level and memory usage,
+   standard memory allocation functions). The source code of these
+   utility functions can easily be modified if you need special options.
+*/
+
+ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
+/*
+     Update a running Adler-32 checksum with the bytes buf[0..len-1] and
+   return the updated checksum. If buf is NULL, this function returns
+   the required initial value for the checksum.
+   An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
+   much faster. Usage example:
+
+     uLong adler = adler32(0L, Z_NULL, 0);
+
+     while (read_buffer(buffer, length) != EOF) {
+       adler = adler32(adler, buffer, length);
+     }
+     if (adler != original_adler) error();
+*/
+
+/*
+     Combine two Adler-32 checksums into one.  For two sequences of bytes, seq1
+   and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
+   each, adler1 and adler2.  adler32_combine() returns the Adler-32 checksum of
+   seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.
+*/
+
+ZEXTERN  uInt ZEXPORT crc32  OF((uInt crc, const Bytef *buf, uInt len));
+/*
+     Update a running CRC-32 with the bytes buf[0..len-1] and return the
+   updated CRC-32. If buf is NULL, this function returns the required initial
+   value for the for the crc. Pre- and post-conditioning (one's complement) is
+   performed within this function so it shouldn't be done by the application.
+   Usage example:
+
+     uLong crc = crc32(0L, Z_NULL, 0);
+
+     while (read_buffer(buffer, length) != EOF) {
+       crc = crc32(crc, buffer, length);
+     }
+     if (crc != original_crc) error();
+*/
+
+ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int  windowBits,
+                                      const char *version, int stream_size));
+#define inflateInit(strm) \
+	inflateInit_((strm), ZLIB_VERSION, sizeof(z_stream))
+#define inflateInit2(strm, windowBits) \
+	inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))
+
+#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)
+	struct internal_state {int dummy;}; /* hack for buggy compilers */
+#endif
+
+extern void *gzalloc(void *, unsigned, unsigned);
+extern void gzfree(void *, void *, unsigned);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ZLIB_H */