Use autotools as build system

Change the build system from simple Makefile to autotools.

This will provide the missing install and uninstall targets.
Furthermore passing CPPFLAGS will be supported.

Signed-off-by: Heinrich Schuchardt <[email protected]>

AUTHORS

@@ -0,0 +1 @@
+Andreas Färber <[email protected]>

ChangeLog

@@ -0,0 +1,4 @@
+Version 0.2, 2017-xx-yy
+	Use autotools as build system
+Version 0.1, 2017-05-01
+	Initial release

Makefile.am

@@ -0,0 +1,3 @@
+SUBDIRS = src
+
+ACLOCAL_AMFLAGS = -I m4

NEWS

@@ -0,0 +1,2 @@
+Version 0.1, 2017-05-01
+	Initial Release

README

@@ -0,0 +1,76 @@
+# meson-tools
+
+meson-tools is a collection of tools for use with the Amlogic Meson family of ARM based SoCs.
+
+Name-wise it was inspired by [sunxi-tools](https://github.com/linux-sunxi/sunxi-tools/).
+
+## amlbootsig
+
+Usage:
+```
+ amlbootsig boot_new.bin u-boot.img
+```
+
+This tool is supposed to provide equivalent output to:
+```
+ aml_encrypt_gxb --bootsig --input boot_new.bin --output u-boot.img
+```
+with the tool version distributed by Hardkernel for their Odroid-C2 board (S905 / Meson GXBaby).
+
+### How to compare output
+
+```
+ hexdump -C a/u-boot.img > a/u-boot.img.hex
+ hexdump -C b/u-boot.img > b/u-boot.img.hex
+ diff -u a/u-boot.img.hex b/u-boot.img.hex | less
+```
+
+This should result in a diff with only the following differences:
+
+* First 16 bytes will be random in original.
+* The header for each FIP TOC entry will contain 4 bytes of random data.
+* Due to FIP TOC entry headers differing, the SHA256 hash in the header will differ as well.
+
+For testing identity of output files, modify the code to use the random bytes from the file you are testing against.
+
+### Known limitations
+
+* Correctness: Since amlbootsig was designed to binary-match previously created output files, it may still have some numbers hard-coded or may do calculations in a way that happened to match tested input/output but may break for other input files. Please report such cases as GitHub issues.
+* Endianness: Only Little Endian byte order has been considered. Running it on Big Endian hosts may misinterpret file input and/or result in wrong output and/or other misbehavior. The solution would be byte swaps, but those depend on the field width, which is guessed only and thus may change as the format is being better understood.
+* Security: The tool was not designed to defend against invalid or evil file input.
+
+## unamlbootsig
+
+Usage:
+```
+unamlbootsig u-boot.img boot_new.bin
+```
+
+This tool is supposed to do the reverse of `amlbootsig`, i.e. drop the boot signature.
+
+The output may differ from the original `aml_encrypt_gxb --bootsig`/`amlbootsig` input from 0xb000 to 0xbfff as well as in FIP TOC entry size 16-byte alignment.
+
+### Known limitations
+
+See `amlbootsig`.
+
+## amlinfo
+
+Usage:
+```
+ amlinfo u-boot.img
+```
+
+This tool dumps info about an existing image file.
+
+It supports the following inputs:
+* `amlbootsig` output
+* `aml_encrypt_gxb --bootsig` output, except when using `--amluserkey` or `--efuse`
+* `dd if=u-boot.img bs=512 skip=96` output for either of them (FIP TOC with headered entries)
+* `dd if=u-boot.img bs=1 skip=16` output, i.e. raw `@AML` header, of at least 64 bytes
+
+### Known limitations
+
+* Correctness: Since there seems to be no public documentation for the @AML headers, any field names printed are guesses and may need to be revised once their meaning becauses clearer.
+* Endianness: Only Little Endian byte order has been considered, see above.
+* Security: See above.

autogen.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+test -f configure.ac || {
+  echo "Please, run this script in the top level project directory."
+  exit
+}
+
+libtoolize --force --copy
+aclocal -I m4
+autoconf
+automake --add-missing --copy
+

configure.ac

@@ -0,0 +1,26 @@
+dnl meson-tools
+
+dnl Initialization
+AC_INIT([meson-tools], [0.2], [Andreas Färber <[email protected]>])
+AM_INIT_AUTOMAKE
+LT_INIT
+
+dnl Configure macros
+AC_CONFIG_MACRO_DIR([m4])
+
+LDFLAGS+=" -lcrypto"
+
+AC_CHECK_HEADER([openssl/sha.h],
+  [],
+  [AC_MSG_ERROR([openssl/sha.h not found. Please, install libssl-dev.])]
+  )
+
+dnl Makefiles
+AC_CONFIG_FILES([
+  Makefile
+  src/Makefile
+  ])  
+
+dnl Generate files
+AC_OUTPUT
+

src/Makefile.am

@@ -0,0 +1,5 @@
+bin_PROGRAMS = amlbootsig unamlbootsig amlinfo
+
+amlbootsig_SOURCES = amlbootsig.c fip.h meson.h
+unamlbootsig_SOURCES = unamlbootsig.c fip.h meson.h
+amlinfo_SOURCES = amlinfo.c fip.h meson.h