core/flash: Move subpartition locating logic out into own file, add tests

A unit test for parsing sub-partition info is useful for a number
of reasons, one of which showed its head during development of
secure/trusted boot.

This patch just moves things around, there's no functional changes.

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

2 files changed, 56 insertions, 0 deletions

diff --git a/core/test/Makefile.check b/core/test/Makefile.check
index fa1b806d..d3dd2600 100644
--- a/core/test/Makefile.check
+++ b/core/test/Makefile.check
@@ -1,5 +1,6 @@
 # -*-Makefile-*-
 CORE_TEST := core/test/run-device \
+	core/test/run-flash-subpartition \
 	core/test/run-mem_region \
 	core/test/run-malloc \
 	core/test/run-malloc-speed \
diff --git a/core/test/run-flash-subpartition.c b/core/test/run-flash-subpartition.c
new file mode 100644
index 00000000..169362ef
--- /dev/null
+++ b/core/test/run-flash-subpartition.c
@@ -0,0 +1,55 @@
+/* Copyright 2013-2016 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * 	http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <skiboot.h>
+#include <opal-api.h>
+#include <stdlib.h>
+
+#include "../flash-subpartition.c"
+#include <assert.h>
+
+/* This is a straight dump of the CAPP ucode partition header */
+char capp[4096] = {0x43, 0x41, 0x50, 0x50, 0x00, 0x00, 0x00, 0x01,
+		   0x00, 0x01, 0x00, 0xea, 0x00, 0x00, 0x10, 0x00,
+		   0x00, 0x00, 0x8e, 0x50, 0x00, 0x02, 0x00, 0xea,
+		   0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x8e, 0x50,
+		   0x00, 0x02, 0x00, 0xef, 0x00, 0x00, 0x10, 0x00,
+		   0x00, 0x00, 0x8e, 0x50, 0x00, 0x02, 0x01, 0xef,
+		   0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x8e, 0x50,
+		   0x00, 0x01, 0x00, 0xd3, 0x00, 0x00, 0x10, 0x00,
+		   0x00, 0x00, 0x8e, 0x50, 0x00, 0x00, 0x00, 0x00 };
+
+int main(void)
+{
+	int rc;
+	uint32_t offset;
+	uint32_t size;
+	uint32_t subids[] = { 0x100ea, 0x200ea, 0x200ef, 0x201ef, 0x100d3 };
+
+	for (int i = 0; i < sizeof(subids)/sizeof(uint32_t); i++) {
+		offset = 0;
+		rc = flash_subpart_info(capp, 0x24000, subids[i],
+					&offset, &size);
+		printf("\nsubid %x\n", subids[i]);
+		printf("offset %u\n", offset);
+		printf("size %u\n", size);
+		assert (rc == 0);
+		assert (size == 36432);
+		assert (offset == 4096);
+	}
+
+	return 0;
+}