From ce0aa5dd20e44372f9617dd67c984f41fcdbed88 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Tue, 13 Jul 2010 13:35:17 -0700 Subject: 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 LKML-Reference: <4C3CCE05.4090505@kernel.org> Acked-by: Pekka Enberg Signed-off-by: H. Peter Anvin --- arch/x86/boot/string.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'arch/x86/boot/string.c') diff --git a/arch/x86/boot/string.c b/arch/x86/boot/string.c index aba29df4a7bb..3cbc4058dd26 100644 --- a/arch/x86/boot/string.c +++ b/arch/x86/boot/string.c @@ -68,10 +68,32 @@ unsigned int atou(const char *s) /* 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; -- cgit