[PATCH 13/15] RFC: lib: Support a binary prefix 0y

[Simon Glass]

In some cases it is useful to be able to supply a binary value to a
command. Use the '0y' prefix for this (binarY).

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 doc/usage/cmdline.rst | 6 ++++++
 lib/strto.c           | 3 +++
 test/str_ut.c         | 8 ++++++++
 3 files changed, 17 insertions(+)

diff --git a/doc/usage/cmdline.rst b/doc/usage/cmdline.rst
index 7f2cfad2a0f..05ce65958c4 100644
--- a/doc/usage/cmdline.rst
+++ b/doc/usage/cmdline.rst
@@ -96,3 +96,9 @@ convenient::
 
   => i2c speed 0x30000
   Setting bus speed to 196608 Hz
+
+U-Boot also supports a `0y` for binary base 2 ("binarY")::
+
+  => mw 100 0y11010011
+  => md 100 1
+  00000100: 000000d3                             ....
diff --git a/lib/strto.c b/lib/strto.c
index 120214d83f8..a7531e877f5 100644
--- a/lib/strto.c
+++ b/lib/strto.c
@@ -26,6 +26,9 @@ static const char *_parse_integer_fixup_radix(const char *s, uint *basep)
 		} else if (ch == 'm') {
 			*basep = 10;
 			s += 2;
+		} else if (ch == 'y') {
+			*basep = 2;
+			s += 2;
 		} else if (!*basep) {
 			/* Only select octal if we don't have a base */
 			*basep = 8;
diff --git a/test/str_ut.c b/test/str_ut.c
index 716f7c45c38..731ef0c49ae 100644
--- a/test/str_ut.c
+++ b/test/str_ut.c
@@ -117,6 +117,10 @@ static int str_simple_strtoul(struct unit_test_state *uts)
 	ut_assertok(run_strtoul(uts, "0x123fg", 0, 0x123f, 6, false));
 	ut_assertok(run_strtoul(uts, "0m123a", 16, 123, 5, false));
 
+	/* check binary */
+	ut_assertok(run_strtoul(uts, "1011b", 2, 0xb, 4, false));
+	ut_assertok(run_strtoul(uts, "0y111more", 0, 7, 5, false));
+
 	return 0;
 }
 STR_TEST(str_simple_strtoul, 0);
@@ -186,6 +190,10 @@ static int str_simple_strtoull(struct unit_test_state *uts)
 	ut_assertok(run_strtoull(uts, "0x123fg", 0, 0x123f, 6, false));
 	ut_assertok(run_strtoull(uts, "0m123a", 16, 123, 5, false));
 
+	/* check binary */
+	ut_assertok(run_strtoull(uts, "1011b", 2, 0xb, 4, false));
+	ut_assertok(run_strtoull(uts, "0y111more", 0, 7, 5, false));
+
 	return 0;
 }
 STR_TEST(str_simple_strtoull, 0);
-- 
2.32.0.402.g57bb445576-goog