12 files changed, 157 insertions, 259 deletions

diff --git a/arch/x86_64/kernel/apic.c b/arch/x86_64/kernel/apic.c
index 496cd1bd2ae5..660602c51f51 100644
--- a/arch/x86_64/kernel/apic.c
+++ b/arch/x86_64/kernel/apic.c
@@ -36,6 +36,7 @@
 #include <asm/idle.h>
 #include <asm/proto.h>
 #include <asm/timex.h>
+#include <asm/apic.h>
 
 int apic_verbosity;
 int apic_runs_main_timer;
@@ -546,18 +547,24 @@ static void apic_pm_activate(void) { }
 
 static int __init apic_set_verbosity(char *str)
 {
+        if (str == NULL)  {
+                skip_ioapic_setup = 0;
+                ioapic_force = 1;
+                return 0;
+        }
         if (strcmp("debug", str) == 0)
                 apic_verbosity = APIC_DEBUG;
         else if (strcmp("verbose", str) == 0)
                 apic_verbosity = APIC_VERBOSE;
-        else
+        else {
                 printk(KERN_WARNING "APIC Verbosity level %s not recognised"
-                                " use apic=verbose or apic=debug", str);
+                                " use apic=verbose or apic=debug\n", str);
+                return -EINVAL;
+        }
 
-        return 1;
+        return 0;
 }
-
-__setup("apic=", apic_set_verbosity);
+early_param("apic", apic_set_verbosity);
 
 /*
  * Detect and enable local APICs on non-SMP boards.
@@ -1078,14 +1085,17 @@ int __init APIC_init_uniprocessor (void)
 static __init int setup_disableapic(char *str) 
 { 
         disable_apic = 1;
-        return 1;
-} 
+        clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
+        return 0;
+}
+early_param("disableapic", setup_disableapic);
 
+/* same as disableapic, for compatibility */
 static __init int setup_nolapic(char *str) 
 { 
-        disable_apic = 1;
-        return 1;
+        return setup_disableapic(str);
 } 
+early_param("nolapic", setup_nolapic);
 
 static __init int setup_noapictimer(char *str) 
 { 
@@ -1118,11 +1128,5 @@ static __init int setup_apicpmtimer(char *s)
 }
 __setup("apicpmtimer", setup_apicpmtimer);
 
-/* dummy parsing: see setup.c */
-
-__setup("disableapic", setup_disableapic); 
-__setup("nolapic", setup_nolapic);  /* same as disableapic, for compatibility */
-
 __setup("noapictimer", setup_noapictimer); 
 
-/* no "lapic" flag - we only use the lapic when the BIOS tells us so. */
diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c
index 1362aad4f3aa..a4739dc82937 100644
--- a/arch/x86_64/kernel/e820.c
+++ b/arch/x86_64/kernel/e820.c
@@ -596,31 +596,64 @@ void __init setup_memory_region(void)
         e820_print_map(who);
 }
 
-void __init parse_memopt(char *p, char **from) 
-{ 
-        end_user_pfn = memparse(p, from);
+static int __init parse_memopt(char *p)
+{
+        if (!p)
+                return -EINVAL;
+        end_user_pfn = memparse(p, &p);
         end_user_pfn >>= PAGE_SHIFT;    
+        return 0;
 } 
+early_param("mem", parse_memopt);
+
+static int userdef __initdata;
 
-void __init parse_memmapopt(char *p, char **from)
+static int __init parse_memmap_opt(char *p)
 {
+        char *oldp;
         unsigned long long start_at, mem_size;
 
-        mem_size = memparse(p, from);
-        p = *from;
+        if (!strcmp(p, "exactmap")) {
+#ifdef CONFIG_CRASH_DUMP
+                /* If we are doing a crash dump, we
+                 * still need to know the real mem
+                 * size before original memory map is
+                 * reset.
+                 */
+                saved_max_pfn = e820_end_of_ram();
+#endif
+                end_pfn_map = 0;
+                e820.nr_map = 0;
+                userdef = 1;
+                return 0;
+        }
+
+        oldp = p;
+        mem_size = memparse(p, &p);
+        if (p == oldp)
+                return -EINVAL;
         if (*p == '@') {
-                start_at = memparse(p+1, from);
+                start_at = memparse(p+1, &p);
                 add_memory_region(start_at, mem_size, E820_RAM);
         } else if (*p == '#') {
-                start_at = memparse(p+1, from);
+                start_at = memparse(p+1, &p);
                 add_memory_region(start_at, mem_size, E820_ACPI);
         } else if (*p == '$') {
-                start_at = memparse(p+1, from);
+                start_at = memparse(p+1, &p);
                 add_memory_region(start_at, mem_size, E820_RESERVED);
         } else {
                 end_user_pfn = (mem_size >> PAGE_SHIFT);
         }
-        p = *from;
+        return *p == '\0' ? 0 : -EINVAL;
+}
+early_param("memmap", parse_memmap_opt);
+
+void finish_e820_parsing(void)
+{
+        if (userdef) {
+                printk(KERN_INFO "user-defined physical RAM map:\n");
+                e820_print_map("user");
+        }
 }
 
 unsigned long pci_mem_start = 0xaeedbabe;
diff --git a/arch/x86_64/kernel/early_printk.c b/arch/x86_64/kernel/early_printk.c
index 140051e07fa6..e22ecd54870d 100644
--- a/arch/x86_64/kernel/early_printk.c
+++ b/arch/x86_64/kernel/early_printk.c
@@ -215,20 +215,16 @@ void early_printk(const char *fmt, ...)
 
 static int __initdata keep_early;
 
-int __init setup_early_printk(char *opt)
+static int __init setup_early_printk(char *buf)
 {
-        char *space;
-        char buf[256];
+        if (!buf)
+                return 0;
 
         if (early_console_initialized)
-                return 1;
-
-        strlcpy(buf,opt,sizeof(buf));
-        space = strchr(buf, ' ');
-        if (space)
-                *space = 0;
+                return 0;
+        early_console_initialized = 1;
 
-        if (strstr(buf,"keep"))
+        if (!strcmp(buf,"keep"))
                 keep_early = 1;
 
         if (!strncmp(buf, "serial", 6)) {
@@ -248,11 +244,12 @@ int __init setup_early_printk(char *opt)
                 early_console = &simnow_console;
                 keep_early = 1;
         }
-        early_console_initialized = 1;
         register_console(early_console);
         return 0;
 }
 
+early_param("earlyprintk", setup_early_printk);
+
 void __init disable_early_printk(void)
 {
         if (!early_console_initialized || !early_console)
@@ -266,4 +263,3 @@ void __init disable_early_printk(void)
         }
 }
 
-__setup("earlyprintk=", setup_early_printk);
diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c
index f2461fde9f8f..6716cbfc34ac 100644
--- a/arch/x86_64/kernel/head64.c
+++ b/arch/x86_64/kernel/head64.c
@@ -58,7 +58,6 @@ static void __init copy_bootdata(char *real_mode_data)
 
 void __init x86_64_start_kernel(char * real_mode_data)
 {
-        char *s;
         int i;
 
         for (i = 0; i < 256; i++)
@@ -85,19 +84,5 @@ void __init x86_64_start_kernel(char * real_mode_data)
 #ifdef CONFIG_SMP
         cpu_set(0, cpu_online_map);
 #endif
-        s = strstr(saved_command_line, "earlyprintk=");
-        if (s != NULL)
-                setup_early_printk(strchr(s, '=') + 1);
-#ifdef CONFIG_NUMA
-        s = strstr(saved_command_line, "numa=");
-        if (s != NULL)
-                numa_setup(s+5);
-#endif
-        if (strstr(saved_command_line, "disableapic"))
-                disable_apic = 1;
-        /* You need early console to see that */
-        if (__pa_symbol(&_end) >= KERNEL_TEXT_SIZE)
-                panic("Kernel too big for kernel mapping\n");
-
         start_kernel();
 }
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index a1412042b918..afac3dbb3729 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -48,7 +48,7 @@ int sis_apic_bug; /* not actually supported, dummy for compile */
 
 static int no_timer_check;
 
-int disable_timer_pin_1 __initdata;
+static int disable_timer_pin_1 __initdata;
 
 int timer_over_8254 __initdata = 0;
 
@@ -253,18 +253,17 @@ int ioapic_force;
 static int __init disable_ioapic_setup(char *str)
 {
         skip_ioapic_setup = 1;
-        return 1;
+        return 0;
 }
+early_param("noapic", disable_ioapic_setup);
 
-static int __init enable_ioapic_setup(char *str)
+/* Actually the next is obsolete, but keep it for paranoid reasons -AK */
+static int __init disable_timer_pin_setup(char *arg)
 {
-        ioapic_force = 1;
-        skip_ioapic_setup = 0;
+        disable_timer_pin_1 = 1;
         return 1;
 }
-
-__setup("noapic", disable_ioapic_setup);
-__setup("apic", enable_ioapic_setup);
+__setup("disable_timer_pin_1", disable_timer_pin_setup);
 
 static int __init setup_disable_8254_timer(char *s)
 {
diff --git a/arch/x86_64/kernel/machine_kexec.c b/arch/x86_64/kernel/machine_kexec.c
index 106076b370fc..2e94c072d84a 100644
--- a/arch/x86_64/kernel/machine_kexec.c
+++ b/arch/x86_64/kernel/machine_kexec.c
@@ -226,3 +226,31 @@ NORET_TYPE void machine_kexec(struct kimage *image)
         rnk = (relocate_new_kernel_t) control_code_buffer;
         (*rnk)(page_list, control_code_buffer, image->start, start_pgtable);
 }
+
+/* crashkernel=size@addr specifies the location to reserve for
+ * a crash kernel.  By reserving this memory we guarantee
+ * that linux never set's it up as a DMA target.
+ * Useful for holding code to do something appropriate
+ * after a kernel panic.
+ */
+static int __init setup_crashkernel(char *arg)
+{
+        unsigned long size, base;
+        char *p;
+        if (!arg)
+                return -EINVAL;
+        size = memparse(arg, &p);
+        if (arg == p)
+                return -EINVAL;
+        if (*p == '@') {
+                base = memparse(p+1, &p);
+                /* FIXME: Do I want a sanity check to validate the
+                 * memory range?  Yes you do, but it's too early for
+                 * e820 -AK */
+                crashk_res.start = base;
+                crashk_res.end   = base + size - 1;
+        }
+        return 0;
+}
+early_param("crashkernel", setup_crashkernel);
+
diff --git a/arch/x86_64/kernel/pci-dma.c b/arch/x86_64/kernel/pci-dma.c
index 9c44f4f2433d..4dcb671bd19f 100644
--- a/arch/x86_64/kernel/pci-dma.c
+++ b/arch/x86_64/kernel/pci-dma.c
@@ -236,6 +236,9 @@ __init int iommu_setup(char *p)
 {
     iommu_merge = 1;
 
+        if (!p)
+                return -EINVAL;
+
     while (*p) {
             if (!strncmp(p,"off",3))
                     no_iommu = 1;
@@ -278,9 +281,9 @@ __init int iommu_setup(char *p)
             if (*p == ',')
                     ++p;
     }
-    return 1;
+    return 0;
 }
-__setup("iommu=", iommu_setup);
+early_param("iommu", iommu_setup);
 
 void __init pci_iommu_alloc(void)
 {
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index 73f1cdd140fe..f55540a6084e 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -76,11 +76,6 @@ unsigned long mmu_cr4_features;
 
 int acpi_disabled;
 EXPORT_SYMBOL(acpi_disabled);
-#ifdef  CONFIG_ACPI
-extern int __initdata acpi_ht;
-extern acpi_interrupt_flags     acpi_sci_flags;
-int __initdata acpi_force = 0;
-#endif
 
 int acpi_numa __initdata;
 
@@ -276,183 +271,22 @@ static void __init probe_roms(void)
         }
 }
 
-/* Check for full argument with no trailing characters */
-static int fullarg(char *p, char *arg)
+#ifdef CONFIG_PROC_VMCORE
+/* elfcorehdr= specifies the location of elf core header
+ * stored by the crashed kernel. This option will be passed
+ * by kexec loader to the capture kernel.
+ */
+static int __init setup_elfcorehdr(char *arg)
 {
-        int l = strlen(arg);
-        return !memcmp(p, arg, l) && (p[l] == 0 || isspace(p[l]));
+        char *end;
+        if (!arg)
+                return -EINVAL;
+        elfcorehdr_addr = memparse(arg, &end);
+        return end > arg ? 0 : -EINVAL;
 }
-
-static __init void parse_cmdline_early (char ** cmdline_p)
-{
-        char c = ' ', *to = command_line, *from = COMMAND_LINE;
-        int len = 0;
-        int userdef = 0;
-
-        for (;;) {
-                if (c != ' ') 
-                        goto next_char; 
-
-#ifdef  CONFIG_SMP
-                /*
-                 * If the BIOS enumerates physical processors before logical,
-                 * maxcpus=N at enumeration-time can be used to disable HT.
-                 */
-                else if (!memcmp(from, "maxcpus=", 8)) {
-                        extern unsigned int maxcpus;
-
-                        maxcpus = simple_strtoul(from + 8, NULL, 0);
-                }
-#endif
-#ifdef CONFIG_ACPI
-                /* "acpi=off" disables both ACPI table parsing and interpreter init */
-                if (fullarg(from,"acpi=off"))
-                        disable_acpi();
-
-                if (fullarg(from, "acpi=force")) { 
-                        /* add later when we do DMI horrors: */
-                        acpi_force = 1;
-                        acpi_disabled = 0;
-                }
-
-                /* acpi=ht just means: do ACPI MADT parsing 
-                   at bootup, but don't enable the full ACPI interpreter */
-                if (fullarg(from, "acpi=ht")) { 
-                        if (!acpi_force)
-                                disable_acpi();
-                        acpi_ht = 1; 
-                }
-                else if (fullarg(from, "pci=noacpi")) 
-                        acpi_disable_pci();
-                else if (fullarg(from, "acpi=noirq"))
-                        acpi_noirq_set();
-
-                else if (fullarg(from, "acpi_sci=edge"))
-                        acpi_sci_flags.trigger =  1;
-                else if (fullarg(from, "acpi_sci=level"))
-                        acpi_sci_flags.trigger = 3;
-                else if (fullarg(from, "acpi_sci=high"))
-                        acpi_sci_flags.polarity = 1;
-                else if (fullarg(from, "acpi_sci=low"))
-                        acpi_sci_flags.polarity = 3;
-
-                /* acpi=strict disables out-of-spec workarounds */
-                else if (fullarg(from, "acpi=strict")) {
-                        acpi_strict = 1;
-                }
-                else if (fullarg(from, "acpi_skip_timer_override"))
-                        acpi_skip_timer_override = 1;
+early_param("elfcorehdr", setup_elfcorehdr);
 #endif
 
-                if (fullarg(from, "disable_timer_pin_1"))
-                        disable_timer_pin_1 = 1;
-                if (fullarg(from, "enable_timer_pin_1"))
-                        disable_timer_pin_1 = -1;
-
-                if (fullarg(from, "nolapic") || fullarg(from, "disableapic")) {
-                        clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
-                        disable_apic = 1;
-                }
-
-                if (fullarg(from, "noapic"))
-                        skip_ioapic_setup = 1;
-
-                if (fullarg(from,"apic")) {
-                        skip_ioapic_setup = 0;
-                        ioapic_force = 1;
-                }
-                        
-                if (!memcmp(from, "mem=", 4))
-                        parse_memopt(from+4, &from); 
-
-                if (!memcmp(from, "memmap=", 7)) {
-                        /* exactmap option is for used defined memory */
-                        if (!memcmp(from+7, "exactmap", 8)) {
-#ifdef CONFIG_CRASH_DUMP
-                                /* If we are doing a crash dump, we
-                                 * still need to know the real mem
-                                 * size before original memory map is
-                                 * reset.
-                                 */
-                                saved_max_pfn = e820_end_of_ram();
-#endif
-                                from += 8+7;
-                                end_pfn_map = 0;
-                                e820.nr_map = 0;
-                                userdef = 1;
-                        }
-                        else {
-                                parse_memmapopt(from+7, &from);
-                                userdef = 1;
-                        }
-                }
-
-#ifdef CONFIG_NUMA
-                if (!memcmp(from, "numa=", 5))
-                        numa_setup(from+5); 
-#endif
-
-                if (!memcmp(from,"iommu=",6)) { 
-                        iommu_setup(from+6); 
-                }
-
-                if (fullarg(from,"oops=panic"))
-                        panic_on_oops = 1;
-
-                if (!memcmp(from, "noexec=", 7))
-                        nonx_setup(from + 7);
-
-#ifdef CONFIG_KEXEC
-                /* crashkernel=size@addr specifies the location to reserve for
-                 * a crash kernel.  By reserving this memory we guarantee
-                 * that linux never set's it up as a DMA target.
-                 * Useful for holding code to do something appropriate
-                 * after a kernel panic.
-                 */
-                else if (!memcmp(from, "crashkernel=", 12)) {
-                        unsigned long size, base;
-                        size = memparse(from+12, &from);
-                        if (*from == '@') {
-                                base = memparse(from+1, &from);
-                                /* FIXME: Do I want a sanity check
-                                 * to validate the memory range?
-                                 */
-                                crashk_res.start = base;
-                                crashk_res.end   = base + size - 1;
-                        }
-                }
-#endif
-
-#ifdef CONFIG_PROC_VMCORE
-                /* elfcorehdr= specifies the location of elf core header
-                 * stored by the crashed kernel. This option will be passed
-                 * by kexec loader to the capture kernel.
-                 */
-                else if(!memcmp(from, "elfcorehdr=", 11))
-                        elfcorehdr_addr = memparse(from+11, &from);
-#endif
-
-#ifdef CONFIG_HOTPLUG_CPU
-                else if (!memcmp(from, "additional_cpus=", 16))
-                        setup_additional_cpus(from+16);
-#endif
-
-        next_char:
-                c = *(from++);
-                if (!c)
-                        break;
-                if (COMMAND_LINE_SIZE <= ++len)
-                        break;
-                *(to++) = c;
-        }
-        if (userdef) {
-                printk(KERN_INFO "user-defined physical RAM map:\n");
-                e820_print_map("user");
-        }
-        *to = '\0';
-        *cmdline_p = command_line;
-}
-
 #ifndef CONFIG_NUMA
 static void __init
 contig_initmem_init(unsigned long start_pfn, unsigned long end_pfn)
@@ -547,7 +381,12 @@ void __init setup_arch(char **cmdline_p)
 
         early_identify_cpu(&boot_cpu_data);
 
-        parse_cmdline_early(cmdline_p);
+        strlcpy(command_line, saved_command_line, COMMAND_LINE_SIZE);
+        *cmdline_p = command_line;
+
+        parse_early_param();
+
+        finish_e820_parsing();
 
         /*
          * partially used pages are not usable - thus
diff --git a/arch/x86_64/kernel/setup64.c b/arch/x86_64/kernel/setup64.c
index 417de564456e..646caa0a20bb 100644
--- a/arch/x86_64/kernel/setup64.c
+++ b/arch/x86_64/kernel/setup64.c
@@ -46,8 +46,10 @@ Control non executable mappings for 64bit processes.
 on      Enable(default)
 off     Disable
 */ 
-int __init nonx_setup(char *str)
+static int __init nonx_setup(char *str)
 {
+        if (!str)
+                return -EINVAL;
         if (!strncmp(str, "on", 2)) {
                 __supported_pte_mask |= _PAGE_NX; 
                 do_not_nx = 0; 
@@ -55,9 +57,9 @@ int __init nonx_setup(char *str)
                 do_not_nx = 1;
                 __supported_pte_mask &= ~_PAGE_NX;
         }
-        return 1;
+        return 0;
 } 
-__setup("noexec=", nonx_setup); /* parsed early actually */
+early_param("noexec", nonx_setup);
 
 int force_personality32 = 0; 
 
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index ae7d6d84e352..0b9f28b05e7d 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -1270,11 +1270,11 @@ void __cpu_die(unsigned int cpu)
         printk(KERN_ERR "CPU %u didn't die...\n", cpu);
 }
 
-__init int setup_additional_cpus(char *s)
+static __init int setup_additional_cpus(char *s)
 {
-        return get_option(&s, &additional_cpus);
+        return s && get_option(&s, &additional_cpus) ? 0 : -EINVAL;
 }
-__setup("additional_cpus=", setup_additional_cpus);
+early_param("additional_cpus", setup_additional_cpus);
 
 #else /* ... !CONFIG_HOTPLUG_CPU */
 
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index 56d7ff0c894c..9ec2b1d5893d 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -1119,24 +1119,30 @@ void __init trap_init(void)
 }
 
 
-/* Actual parsing is done early in setup.c. */
-static int __init oops_dummy(char *s)
+static int __init oops_setup(char *s)
 { 
-        panic_on_oops = 1;
-        return 1;
+        if (!s)
+                return -EINVAL;
+        if (!strcmp(s, "panic"))
+                panic_on_oops = 1;
+        return 0;
 } 
-__setup("oops=", oops_dummy); 
+early_param("oops", oops_setup);
 
 static int __init kstack_setup(char *s)
 {
+        if (!s)
+                return -EINVAL;
         kstack_depth_to_print = simple_strtoul(s,NULL,0);
-        return 1;
+        return 0;
 }
-__setup("kstack=", kstack_setup);
+early_param("kstack", kstack_setup);
 
 #ifdef CONFIG_STACK_UNWIND
 static int __init call_trace_setup(char *s)
 {
+        if (!s)
+                return -EINVAL;
         if (strcmp(s, "old") == 0)
                 call_trace = -1;
         else if (strcmp(s, "both") == 0)
@@ -1145,7 +1151,7 @@ static int __init call_trace_setup(char *s)
                 call_trace = 1;
         else if (strcmp(s, "new") == 0)
                 call_trace = 2;
-        return 1;
+        return 0;
 }
-__setup("call_trace=", call_trace_setup);
+early_param("call_trace", call_trace_setup);
 #endif
diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c
index b2fac14baac0..d64d6d93d04b 100644
--- a/arch/x86_64/mm/numa.c
+++ b/arch/x86_64/mm/numa.c
@@ -348,9 +348,10 @@ void __init paging_init(void)
         }
 } 
 
-/* [numa=off] */
-__init int numa_setup(char *opt) 
+static __init int numa_setup(char *opt)
 { 
+        if (!opt)
+                return -EINVAL;
         if (!strncmp(opt,"off",3))
                 numa_off = 1;
 #ifdef CONFIG_NUMA_EMU
@@ -366,9 +367,11 @@ __init int numa_setup(char *opt)
         if (!strncmp(opt,"hotadd=", 7))
                 hotadd_percent = simple_strtoul(opt+7, NULL, 10);
 #endif
-        return 1;
+        return 0;
 } 
 
+early_param("numa", numa_setup);
+
 /*
  * Setup early cpu_to_node.
  *