Add %pm as format string to print a MAC address.
This is helpful when analyzing network problems.
Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
v2
no change
---
lib/efi_selftest/efi_selftest_console.c | 41 ++++++++++++++++++++++++++++++++-
1 file changed, 40 insertions(+), 1 deletion(-)
diff --git a/lib/efi_selftest/efi_selftest_console.c
b/lib/efi_selftest/efi_selftest_console.c
index 7b5b724a61..840e2290c6 100644
--- a/lib/efi_selftest/efi_selftest_console.c
+++ b/lib/efi_selftest/efi_selftest_console.c
@@ -12,6 +12,37 @@
struct efi_simple_text_output_protocol *con_out;
struct efi_simple_input_interface *con_in;
+/*
+ * Print a MAC address to an u16 string
+ *
+ * @pointer: mac address
+ * @buf: pointer to buffer address
+ * on return position of terminating zero word
+ */
+static void mac(void *pointer, u16 **buf)
+{
+ int i, j;
+ u16 c;
+ u8 *p = (u8 *)pointer;
+ u8 byte;
+ u16 *pos = *buf;
+
+ for (i = 0; i < ARP_HLEN; ++i) {
+ if (i)
+ *pos++ = ':';
+ byte = p[i];
+ for (j = 4; j >= 0; j -= 4) {
+ c = (byte >> j) & 0x0f;
+ c += '0';
+ if (c > '9')
+ c += 'a' - '9' - 1;
+ *pos++ = c;
+ }
+ }
+ *pos = 0;
+ *buf = pos;
+}
+
/*
* Print a pointer to an u16 string
*
@@ -146,7 +177,15 @@ void efi_st_printf(const char *fmt, ...)
int2dec(va_arg(args, s32), &pos);
break;
case 'p':
- pointer(va_arg(args, void*), &pos);
+ ++c;
+ switch (*c) {
+ case 'm':
+ mac(va_arg(args, void*), &pos);
+ break;
+ default:
+ --c;
+ pointer(va_arg(args, void*), &pos);
+ }
break;
case 's':
s = va_arg(args, const char *);
--
2.14.1
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