On Sat, Nov 5, 2011 at 2:43 AM, Julian Pidancet <julian.pidancet@gmail.com> wrote:

When running on Xen, use Xen debug io port as debug output instead of Bochs one.

Signed-off-by: Julian Pidancet <julian.pidancet@gmail.com> ---  src/output.c |    9 +++++++--  src/xen.h    |    2 ++  2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/output.c b/src/output.c index 462ffb7..78541a4 100644 --- a/src/output.c +++ b/src/output.c @@ -11,6 +11,7 @@  #include "bregs.h" // struct bregs  #include "config.h" // CONFIG_*  #include "biosvar.h" // GET_GLOBAL +#include "xen.h" // PORT_XEN_DEBUG

 struct putcinfo {     void (*func)(struct putcinfo *info, char c); @@ -75,9 +76,13 @@ putc_debug(struct putcinfo *action, char c)  {     if (! CONFIG_DEBUG_LEVEL)         return; -    if (! CONFIG_COREBOOT) +    if (! CONFIG_COREBOOT) {         // Send character to debug port. -        outb(c, PORT_BIOS_DEBUG); +        if (CONFIG_XEN) +            outb(c, PORT_XEN_DEBUG); +        else +            outb(c, PORT_BIOS_DEBUG); +    }     if (c == '\n')         debug_serial('\r');     debug_serial(c); diff --git a/src/xen.h b/src/xen.h index 0ed1e9f..802fee0 100644 --- a/src/xen.h +++ b/src/xen.h @@ -3,6 +3,8 @@

 #include "util.h"

+#define PORT_XEN_DEBUG         0xe9 +  extern u32 xen_cpuid_base;

 void xen_probe(void); -- Julian Pidancet

I posted this simple patch a while ago. Anybody got the time to take a look ? -- Julian