diff options
| author | Joel Sherrill <joel.sherrill@oarcorp.com> | 2014-12-14 16:45:08 -0600 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@oarcorp.com> | 2015-01-04 13:44:56 -0600 |
| commit | 0a36af04bb81afb0e006582cc0751bd4854714b3 (patch) | |
| tree | e53230dd823b8174170dd7c6c05542bbff025749 /c/src/lib/libbsp/i386/pc386/console/printk_support.c | |
| parent | pc386: Add BSP_ENABLE_IDE BSP option (diff) | |
| download | rtems-0a36af04bb81afb0e006582cc0751bd4854714b3.tar.bz2 | |
pc386: Add BSP_ENABLE_COM1_COM4 BSP option
This allows the support for the legacy COM1-COM4 serial ports
to be completely disabled. It is needed to prevent hangs on some
hardware. In particular, the Intel Edison where it is not present.
Diffstat (limited to 'c/src/lib/libbsp/i386/pc386/console/printk_support.c')
| -rw-r--r-- | c/src/lib/libbsp/i386/pc386/console/printk_support.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/c/src/lib/libbsp/i386/pc386/console/printk_support.c b/c/src/lib/libbsp/i386/pc386/console/printk_support.c index b34e3e9f79..c6b0fe5c00 100644 --- a/c/src/lib/libbsp/i386/pc386/console/printk_support.c +++ b/c/src/lib/libbsp/i386/pc386/console/printk_support.c @@ -29,9 +29,9 @@ rtems_device_minor_number BSPPrintkPort = 0; -int ns16550_inbyte_nonblocking_polled( - int minor -); +#if BSP_ENABLE_COM1_COM4 +int ns16550_inbyte_nonblocking_polled( int minor ); +#endif void BSP_outch(char ch); int BSP_inch(void); @@ -52,18 +52,20 @@ void BSP_outch(char ch) int BSP_inch(void) { - int result; + int result = -1; #if BSP_ENABLE_VGA if ( BSPPrintkPort == BSP_CONSOLE_VGA ) { result = BSP_wait_polled_input(); } else #endif + #if BSP_ENABLE_COM1_COM4 { do { result = ns16550_inbyte_nonblocking_polled( BSPPrintkPort ); } while (result == -1); } + #endif return result; } |