X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=init%2Fmain.c;h=9def935ab13a27c829e28bb2830cdbe2c6fd900d;hb=0e75182cf34ab7f7f1d88c1231fcc04780a7dc7d;hp=0eb1c7463fe4d08c3012ee66cb486c72122a26d5;hpb=71d441ddb51941d9d8279bdc858f965711b85c14;p=mv-sheeva.git

diff --git a/init/main.c b/init/main.c
index 0eb1c7463fe..9def935ab13 100644
--- a/init/main.c
+++ b/init/main.c
@@ -132,20 +132,9 @@ static char *static_command_line;
 static char *execute_command;
 static char *ramdisk_execute_command;
 
+#ifdef CONFIG_SMP
 /* Setup configured maximum number of CPUs to activate */
-static unsigned int max_cpus = NR_CPUS;
-
-/*
- * If set, this is an indication to the drivers that reset the underlying
- * device before going ahead with the initialization otherwise driver might
- * rely on the BIOS and skip the reset operation.
- *
- * This is useful if kernel is booting in an unreliable environment.
- * For ex. kdump situaiton where previous kernel has crashed, BIOS has been
- * skipped and devices will be in unknown state.
- */
-unsigned int reset_devices;
-EXPORT_SYMBOL(reset_devices);
+static unsigned int __initdata max_cpus = NR_CPUS;
 
 /*
  * Setup routine for controlling SMP activation
@@ -157,21 +146,44 @@ EXPORT_SYMBOL(reset_devices);
  * greater than 0, limits the maximum number of CPUs activated in
  * SMP mode to <NUM>.
  */
+#ifndef CONFIG_X86_IO_APIC
+static inline void disable_ioapic_setup(void) {};
+#endif
+
 static int __init nosmp(char *str)
 {
 	max_cpus = 0;
-	return 1;
+	disable_ioapic_setup();
+	return 0;
 }
 
-__setup("nosmp", nosmp);
+early_param("nosmp", nosmp);
 
 static int __init maxcpus(char *str)
 {
 	get_option(&str, &max_cpus);
-	return 1;
+	if (max_cpus == 0)
+		disable_ioapic_setup();
+
+	return 0;
 }
 
-__setup("maxcpus=", maxcpus);
+early_param("maxcpus", maxcpus);
+#else
+#define max_cpus NR_CPUS
+#endif
+
+/*
+ * If set, this is an indication to the drivers that reset the underlying
+ * device before going ahead with the initialization otherwise driver might
+ * rely on the BIOS and skip the reset operation.
+ *
+ * This is useful if kernel is booting in an unreliable environment.
+ * For ex. kdump situaiton where previous kernel has crashed, BIOS has been
+ * skipped and devices will be in unknown state.
+ */
+unsigned int reset_devices;
+EXPORT_SYMBOL(reset_devices);
 
 static int __init set_reset_devices(char *str)
 {
@@ -453,7 +465,10 @@ static int __init do_early_param(char *param, char *val)
 	struct obs_kernel_param *p;
 
 	for (p = __setup_start; p < __setup_end; p++) {
-		if (p->early && strcmp(param, p->str) == 0) {
+		if ((p->early && strcmp(param, p->str) == 0) ||
+		    (strcmp(param, "console") == 0 &&
+		     strcmp(p->str, "earlycon") == 0)
+		) {
 			if (p->setup_func(val) != 0)
 				printk(KERN_WARNING
 				       "Malformed early option '%s'\n", param);
@@ -725,6 +740,15 @@ static void __init do_basic_setup(void)
 	do_initcalls();
 }
 
+static int __initdata nosoftlockup;
+
+static int __init nosoftlockup_setup(char *str)
+{
+	nosoftlockup = 1;
+	return 1;
+}
+__setup("nosoftlockup", nosoftlockup_setup);
+
 static void __init do_pre_smp_initcalls(void)
 {
 	extern int spawn_ksoftirqd(void);
@@ -734,7 +758,8 @@ static void __init do_pre_smp_initcalls(void)
 	migration_init();
 #endif
 	spawn_ksoftirqd();
-	spawn_softlockup_task();
+	if (!nosoftlockup)
+		spawn_softlockup_task();
 }
 
 static void run_init_process(char *init_filename)