4 files changed, 170 insertions, 0 deletions
diff --git a/platform/endian_big.c b/platform/endian_big.c
new file mode 100644
index 00000000..45655340
--- /dev/null
+++ b/platform/endian_big.c
@@ -0,0 +1,43 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (C) 2022 secunet Security Networks AG
+ * (written by Thomas Heijligen <thomas.heijligen@secunet.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "platform.h"
+#include "platform/swap.h"
+
+/* convert cpu native endian to little endian */
+___return_swapped(cpu_to_le, 8)
+___return_swapped(cpu_to_le, 16)
+___return_swapped(cpu_to_le, 32)
+___return_swapped(cpu_to_le, 64)
+
+/* convert cpu native endian to big endian */
+___return_same(cpu_to_be, 8)
+___return_same(cpu_to_be, 16)
+___return_same(cpu_to_be, 32)
+___return_same(cpu_to_be, 64)
+
+/* convert little endian to cpu native endian */
+___return_swapped(le_to_cpu, 8)
+___return_swapped(le_to_cpu, 16)
+___return_swapped(le_to_cpu, 32)
+___return_swapped(le_to_cpu, 64)
+
+/* convert big endian to cpu native endian */
+___return_same(be_to_cpu, 8)
+___return_same(be_to_cpu, 16)
+___return_same(be_to_cpu, 32)
+___return_same(be_to_cpu, 64)
diff --git a/platform/endian_little.c b/platform/endian_little.c
new file mode 100644
index 00000000..690f3839
--- /dev/null
+++ b/platform/endian_little.c
@@ -0,0 +1,43 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (C) 2022 secunet Security Networks AG
+ * (written by Thomas Heijligen <thomas.heijligen@secunet.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "platform.h"
+#include "platform/swap.h"
+
+/* convert cpu native endian to little endian */
+___return_same(cpu_to_le, 8)
+___return_same(cpu_to_le, 16)
+___return_same(cpu_to_le, 32)
+___return_same(cpu_to_le, 64)
+
+/* convert cpu native endian to big endian */
+___return_swapped(cpu_to_be, 8)
+___return_swapped(cpu_to_be, 16)
+___return_swapped(cpu_to_be, 32)
+___return_swapped(cpu_to_be, 64)
+
+/* convert little endian to cpu native endian */
+___return_same(le_to_cpu, 8)
+___return_same(le_to_cpu, 16)
+___return_same(le_to_cpu, 32)
+___return_same(le_to_cpu, 64)
+
+/* convert big endian to cpu native endian */
+___return_swapped(be_to_cpu, 8)
+___return_swapped(be_to_cpu, 16)
+___return_swapped(be_to_cpu, 32)
+___return_swapped(be_to_cpu, 64)
diff --git a/platform/memaccess.c b/platform/memaccess.c
new file mode 100644
index 00000000..83681212
--- /dev/null
+++ b/platform/memaccess.c
@@ -0,0 +1,42 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (C) 2016 secunet Security Networks AG
+ * (written by Thomas Heijligen <thomas.heijligen@secunet.com>)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "platform.h"
+
+/*
+ * macro to return endian aware read function
+ *
+ * `___read(le, 8)`
+ * 	expands to
+ * `uint8_t read_le8 (const void *const base, const size_t offset)
+ *  { return le_to_cpu8 (*(uint8_t *)((uintptr_t)base + offset)); }`
+ */
+#define ___read(endian, bits) \
+	uint##bits##_t read_##endian##bits (const void *const base, const size_t offset) \
+	{ return endian##_to_cpu##bits (*(uint##bits##_t *)((uintptr_t)base + offset)); }
+
+/* read value from base at offset in little endian */
+___read(le,  8)
+___read(le, 16)
+___read(le, 32)
+___read(le, 64)
+
+/* read value from base at offset in big endian */
+___read(be,  8)
+___read(be, 16)
+___read(be, 32)
+___read(be, 64)
diff --git a/platform/meson.build b/platform/meson.build
new file mode 100644
index 00000000..42e85eea
--- /dev/null
+++ b/platform/meson.build
@@ -0,0 +1,42 @@
+srcs += files(
+  ('endian_' + host_machine.endian() + '.c'),
+  'memaccess.c',
+)
+
+if host_machine.endian() == 'little'
+  add_project_arguments('-D__FLASHROM_LITTLE_ENDIAN__=1', language : 'c')
+endif
+if host_machine.endian() == 'big'
+  add_project_arguments('-D__FLASHROM_BIG_ENDIAN__=1', language : 'c')
+endif
+
+# OpenBSD requires libi386 or libamd64 for I/O port handling
+if host_machine.system() == 'openbsd'
+  if host_machine.cpu_family() == 'x86'
+    libi386 = cc.find_library('i386')
+    deps += libi386
+  elif host_machine.cpu_family() == 'x86_64'
+    libamd64 = cc.find_library('amd64')
+    deps += libamd64
+  endif
+endif
+
+# NetBSD requires libx86 or libx86_64 for I/O port handling
+if host_machine.system() == 'netbsd'
+  if host_machine.cpu_family() == 'x86'
+    libx86 = cc.find_library('x86')
+    deps += libx86
+  elif host_machine.cpu_family() == 'x86_64'
+    libx86_64 = cc.find_library('x86_64')
+    deps += libx86_64
+  endif
+endif
+
+
+# SunOS requires external libraries for network sockets
+# they are used to support serial devices via network
+if host_machine.system() == 'sunos'
+  libsocket = cc.find_library('socket')
+  libnsl = cc.find_library('nsl')
+  deps += [ libsocket, libnsl]
+endif