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authorPeter Chubb <peterc@chubb.wattle.id.au>2007-08-21 13:51:45 +1000
committerTony Luck <tony.luck@intel.com>2007-09-01 02:50:39 -0700
commit8b713c67bccef7cabb0ee915f47eb33d82636af9 (patch)
tree73a0577c8dd70825eaa41dc4527ab09432418166
parent99a19cf1c0eb22bad83fff060f08330ee9e029e2 (diff)
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[IA64] Enable early console for Ski simulator
This patch cleans up the `enable early console for SKI' patch (471e7a44848f467c9b83adc3463d019d2fa8817f), and 1. potentially allows the gensparse_defconfig to work again. (there are other problems running a generic kernel on Ski) 2. fixes the `console registered twice' problem. 3. Cleans up the code by moving the `extern hpsim_cons' declaration to a new asm/hpsim.h file. Thanks to Jes for comments. Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au> Signed-off-by: Tony Luck <tony.luck@intel.com>
-rw-r--r--arch/ia64/hp/sim/hpsim_console.c15
-rw-r--r--arch/ia64/hp/sim/hpsim_setup.c9
-rw-r--r--arch/ia64/kernel/setup.c8
-rw-r--r--include/asm-ia64/hpsim.h10
4 files changed, 28 insertions, 14 deletions
diff --git a/arch/ia64/hp/sim/hpsim_console.c b/arch/ia64/hp/sim/hpsim_console.c
index 6e149c8..0475a545 100644
--- a/arch/ia64/hp/sim/hpsim_console.c
+++ b/arch/ia64/hp/sim/hpsim_console.c
@@ -21,6 +21,7 @@
#include <asm/machvec.h>
#include <asm/pgtable.h>
#include <asm/sal.h>
+#include <asm/hpsim.h>
#include "hpsim_ssc.h"
@@ -28,7 +29,7 @@ static int simcons_init (struct console *, char *);
static void simcons_write (struct console *, const char *, unsigned);
static struct tty_driver *simcons_console_device (struct console *, int *);
-struct console hpsim_cons = {
+static struct console hpsim_cons = {
.name = "simcons",
.write = simcons_write,
.device = simcons_console_device,
@@ -62,3 +63,15 @@ static struct tty_driver *simcons_console_device (struct console *c, int *index)
*index = c->index;
return hp_simserial_driver;
}
+
+int simcons_register(void)
+{
+ if (!ia64_platform_is("hpsim"))
+ return 1;
+
+ if (hpsim_cons.flags & CON_ENABLED)
+ return 1;
+
+ register_console(&hpsim_cons);
+ return 0;
+}
diff --git a/arch/ia64/hp/sim/hpsim_setup.c b/arch/ia64/hp/sim/hpsim_setup.c
index f229719..f629e90 100644
--- a/arch/ia64/hp/sim/hpsim_setup.c
+++ b/arch/ia64/hp/sim/hpsim_setup.c
@@ -21,6 +21,7 @@
#include <asm/machvec.h>
#include <asm/pgtable.h>
#include <asm/sal.h>
+#include <asm/hpsim.h>
#include "hpsim_ssc.h"
@@ -41,11 +42,5 @@ hpsim_setup (char **cmdline_p)
{
ROOT_DEV = Root_SDA1; /* default to first SCSI drive */
-#ifdef CONFIG_HP_SIMSERIAL_CONSOLE
- {
- extern struct console hpsim_cons;
- if (ia64_platform_is("hpsim"))
- register_console(&hpsim_cons);
- }
-#endif
+ simcons_register();
}
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 1f9b1d8..9e392a3 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -60,6 +60,7 @@
#include <asm/smp.h>
#include <asm/system.h>
#include <asm/unistd.h>
+#include <asm/hpsim.h>
#if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE)
# error "struct cpuinfo_ia64 too big!"
@@ -389,13 +390,8 @@ early_console_setup (char *cmdline)
if (!efi_setup_pcdp_console(cmdline))
earlycons++;
#endif
-#ifdef CONFIG_HP_SIMSERIAL_CONSOLE
- {
- extern struct console hpsim_cons;
- register_console(&hpsim_cons);
+ if (!simcons_register())
earlycons++;
- }
-#endif
return (earlycons) ? 0 : -1;
}
diff --git a/include/asm-ia64/hpsim.h b/include/asm-ia64/hpsim.h
new file mode 100644
index 0000000..d6be3fd
--- /dev/null
+++ b/include/asm-ia64/hpsim.h
@@ -0,0 +1,10 @@
+#ifndef _ASMIA64_HPSIM_H
+#define _ASMIA64_HPSIM_H
+
+#ifndef CONFIG_HP_SIMSERIAL_CONSOLE
+static inline int simcons_register(void) { return 1; }
+#else
+int simcons_register(void);
+#endif
+
+#endif