[PATCH] powerpc: Early debugging support for iSeries
Connect iSeries up to the standard early debugging infrastructure.
To actually use this you need to enable the iSeries early debugging
in setup_64.c. Then after the messages are logged hit Ctrl-x Ctrl-x on
your console to dump the Hypervisor console buffer.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index ad5ef805..25cdebd 100644
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -52,6 +52,7 @@
#include <asm/iseries/mf.h>
#include <asm/iseries/hv_lp_event.h>
#include <asm/iseries/lpar_map.h>
+#include <asm/udbg.h>
#include "naca.h"
#include "setup.h"
@@ -62,10 +63,8 @@
#include "call_sm.h"
#include "call_hpt.h"
-extern void hvlog(char *fmt, ...);
-
#ifdef DEBUG
-#define DBG(fmt...) hvlog(fmt)
+#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif
@@ -984,3 +983,16 @@
return 0;
}
early_param("mem", early_parsemem);
+
+static void hvputc(char c)
+{
+ if (c == '\n')
+ hvputc('\r');
+
+ HvCall_writeLogBuffer(&c, 1);
+}
+
+void __init udbg_init_iseries(void)
+{
+ udbg_putc = hvputc;
+}