Before setting up the devices U-Boot's printf() function cannot be used for console output. Provide function os_printf() to print to stderr.
Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com --- arch/sandbox/cpu/os.c | 13 +++++++++++++ include/os.h | 7 +++++++ 2 files changed, 20 insertions(+)
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index d83c862182..ec1836f8f6 100644 --- a/arch/sandbox/cpu/os.c +++ b/arch/sandbox/cpu/os.c @@ -11,6 +11,7 @@ #include <getopt.h> #include <setjmp.h> #include <signal.h> +#include <stdarg.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> @@ -51,6 +52,18 @@ ssize_t os_write(int fd, const void *buf, size_t count) return write(fd, buf, count); }
+int os_printf(const char *fmt, ...) +{ + va_list args; + int i; + + va_start(args, fmt); + i = vfprintf(stdout, fmt, args); + va_end(args); + + return i; +} + off_t os_lseek(int fd, off_t offset, int whence) { if (whence == OS_SEEK_SET) diff --git a/include/os.h b/include/os.h index 10e198cf50..148178787b 100644 --- a/include/os.h +++ b/include/os.h @@ -16,6 +16,13 @@ struct rtc_time; struct sandbox_state;
+/** + * os_printf() - print directly to OS console + * + * @format: format string + */ +int os_printf(const char *format, ...); + /** * Access to the OS read() system call *