diff options
| author | Michael Ellerman <michael@ellerman.id.au> | 2006-01-11 00:54:08 (GMT) |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-01-11 03:48:13 (GMT) |
| commit | bf6a7112bda99aadd6675526423a96be6b356a3d (patch) | |
| tree | e3a0e144ac933e7f35d6fa5f95bc0e0fb0ba6309 | |
| parent | f481f1edee77b3d623457685add1c6b507c25d6f (diff) | |
| download | linux-fsl-qoriq-bf6a7112bda99aadd6675526423a96be6b356a3d.tar.xz | |
[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>
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 14 | ||||
| -rw-r--r-- | arch/powerpc/platforms/iseries/setup.c | 18 | ||||
| -rw-r--r-- | drivers/char/viocons.c | 4 |
3 files changed, 26 insertions, 10 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index c4b7696..177d824 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -75,22 +75,26 @@ * but your kernel will not boot on anything else if you do so */ -/* This one is for use on LPAR machines that support an HVC console - * on vterm 0 - */ +/* For use on LPAR machines that support an HVC console on vterm 0 */ extern void udbg_init_debug_lpar(void); -/* This one is for use on Apple G5 machines - */ + +/* This one is for use on Apple G5 machines */ extern void udbg_init_pmac_realmode(void); + /* That's RTAS panel debug */ extern void call_rtas_display_status_delay(unsigned char c); + /* Here's maple real mode debug */ extern void udbg_init_maple_realmode(void); +/* For iSeries - hit Ctrl-x Ctrl-x to see the output */ +extern void udbg_init_iseries(void); + #define EARLY_DEBUG_INIT() do {} while(0) #if 0 #define EARLY_DEBUG_INIT() udbg_init_debug_lpar() +#define EARLY_DEBUG_INIT() udbg_init_iseries() #define EARLY_DEBUG_INIT() udbg_init_maple_realmode() #define EARLY_DEBUG_INIT() udbg_init_pmac_realmode() #define EARLY_DEBUG_INIT() \ 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 @@ static int __init early_parsemem(char *p) 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; +} diff --git a/drivers/char/viocons.c b/drivers/char/viocons.c index cb82ebf..bead38a 100644 --- a/drivers/char/viocons.c +++ b/drivers/char/viocons.c @@ -131,7 +131,7 @@ static void initDataEvent(struct viocharlpevent *viochar, HvLpIndex lp); static struct tty_driver *viotty_driver; -void hvlog(char *fmt, ...) +static void hvlog(char *fmt, ...) { int i; unsigned long flags; @@ -147,7 +147,7 @@ void hvlog(char *fmt, ...) spin_unlock_irqrestore(&consoleloglock, flags); } -void hvlogOutput(const char *buf, int count) +static void hvlogOutput(const char *buf, int count) { unsigned long flags; int begin; |