riscv: bring in the configstring parsing functions from UCB

I've tested this with commits to come later.

This is from the lowrisc bbl distribution, 87588c4,
with fixes so it builds.

Change-Id: I87893638872259c94d6972e1971578b633155e7e
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/17255
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/src/commonlib/configstring.c b/src/commonlib/configstring.c
new file mode 100644
index 0000000000..40beb1659c
--- /dev/null
+++ b/src/commonlib/configstring.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2013-2016, The Regents of the University of California
+ *(Regents).
+ * All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name of the Regents nor the
+ *    names of its contributors may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
+ * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
+ * ARISING
+ * OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS
+ * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
+ * HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE
+ * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ */
+
+#include <config.h>
+#include <assert.h>
+#include <string.h>
+#include <commonlib/configstring.h>
+
+void query_mem(const char *config_string, uintptr_t *base, size_t *size)
+{
+	query_result res = query_config_string(config_string, "ram{0{addr");
+	*base = get_uint(res);
+	res = query_config_string(config_string, "ram{0{size");
+	*size = get_uint(res);
+}
+
+/* query_rtc returns the physical address of the rtc. */
+void query_rtc(const char *config_string, uintptr_t *mtime)
+{
+	query_result res = query_config_string(config_string, "rtc{addr");
+	*mtime = (uintptr_t)get_uint(res);
+}
+
+const char *configstring(void)
+{
+	uint32_t addr = *(uint32_t *)CONFIG_ARCH_CONFIGSTRING_RISCV;
+	return (const char *)(uintptr_t)addr;
+}