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-rw-r--r--arch/powerpc/boot/stdlib.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/powerpc/boot/stdlib.c b/arch/powerpc/boot/stdlib.c
new file mode 100644
index 0000000000..868b019d63
--- /dev/null
+++ b/arch/powerpc/boot/stdlib.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * stdlib functions
+ *
+ * Author: Scott Wood <scottwood@freescale.com>
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ */
+
+#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;
+}