x86, setup: Make the setup code also accept console=uart8250
Make the boot code also accept the console=uart8250,io,0x2f8,115200n
form of early console.
Also add back simple_guess_base(), otherwise those simple_strtoull(,,0)
are not going to work.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4C3CCE05.4090505@kernel.org>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
diff --git a/arch/x86/boot/string.c b/arch/x86/boot/string.c
index aba29df..3cbc405 100644
--- a/arch/x86/boot/string.c
+++ b/arch/x86/boot/string.c
@@ -68,10 +68,32 @@
/* Works only for digits and letters, but small and fast */
#define TOLOWER(x) ((x) | 0x20)
+static unsigned int simple_guess_base(const char *cp)
+{
+ if (cp[0] == '0') {
+ if (TOLOWER(cp[1]) == 'x' && isxdigit(cp[2]))
+ return 16;
+ else
+ return 8;
+ } else {
+ return 10;
+ }
+}
+
+/**
+ * simple_strtoull - convert a string to an unsigned long long
+ * @cp: The start of the string
+ * @endp: A pointer to the end of the parsed string will be placed here
+ * @base: The number base to use
+ */
+
unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base)
{
unsigned long long result = 0;
+ if (!base)
+ base = simple_guess_base(cp);
+
if (base == 16 && cp[0] == '0' && TOLOWER(cp[1]) == 'x')
cp += 2;