[POWERPC] bootwrapper: Add strtoull()

This will be needed by PlanetCore firmware support.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/arch/powerpc/boot/stdlib.c b/arch/powerpc/boot/stdlib.c
new file mode 100644
index 000000000000..e00d58c29eea
--- /dev/null
+++ b/arch/powerpc/boot/stdlib.c
@@ -0,0 +1,45 @@
+/*
+ * stdlib functions
+ *
+ * Author: Scott Wood <scottwood@freescale.com>
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "stdlib.h"
+
+/* Not currently supported: leading whitespace, sign, 0x prefix, zero base */
+unsigned long long int strtoull(const char *ptr, char **end, int base)
+{
+        unsigned long long ret = 0;
+
+        if (base > 36)
+                goto out;
+
+        while (*ptr) {
+                int digit;
+
+                if (*ptr >= '0' && *ptr <= '9' && *ptr < '0' + base)
+                        digit = *ptr - '0';
+                else if (*ptr >= 'A' && *ptr < 'A' + base - 10)
+                        digit = *ptr - 'A' + 10;
+                else if (*ptr >= 'a' && *ptr < 'a' + base - 10)
+                        digit = *ptr - 'a' + 10;
+                else
+                        break;
+
+                ret *= base;
+                ret += digit;
+                ptr++;
+        }
+
+out:
+        if (end)
+                *end = (char *)ptr;
+
+        return ret;
+}