libfdt: add acpi table verification support
To generate "acpio" and "acpi" images, it needs verify the
original input acpi tables.
Test: can generate acpio/acpi images
Fixes: 111871613
Change-Id: Iadf53df1efc9f8eba3c66d0e1b29af6ecc340d45
diff --git a/libfdt/acpi.c b/libfdt/acpi.c
new file mode 100644
index 0000000..ba51734
--- /dev/null
+++ b/libfdt/acpi.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2018, Intel Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "libacpi.h"
+
+uint8_t acpi_csum(const void *base, int n) {
+ uint8_t *p;
+ uint8_t sum;
+ int bytesDone;
+
+ p = (uint8_t*)base;
+
+ sum = 0;
+ for (bytesDone = 0; bytesDone < n; bytesDone++) {
+ sum += *p;
+ p++;
+ }
+
+ return sum;
+}
+
