7 files changed, 70 insertions, 28 deletions

diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index c485a3b32ba8..9990320b6f9a 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -410,24 +410,16 @@ efi_init (void)
         efi_config_table_t *config_tables;
         efi_char16_t *c16;
         u64 efi_desc_size;
-        char *cp, *end, vendor[100] = "unknown";
+        char *cp, vendor[100] = "unknown";
         extern char saved_command_line[];
         int i;
 
         /* it's too early to be able to use the standard kernel command line support... */
         for (cp = saved_command_line; *cp; ) {
                 if (memcmp(cp, "mem=", 4) == 0) {
-                        cp += 4;
-                        mem_limit = memparse(cp, &end);
-                        if (end != cp)
-                                break;
-                        cp = end;
+                        mem_limit = memparse(cp + 4, &cp);
                 } else if (memcmp(cp, "max_addr=", 9) == 0) {
-                        cp += 9;
-                        max_addr = GRANULEROUNDDOWN(memparse(cp, &end));
-                        if (end != cp)
-                                break;
-                        cp = end;
+                        max_addr = GRANULEROUNDDOWN(memparse(cp + 9, &cp));
                 } else {
                         while (*cp != ' ' && *cp)
                                 ++cp;
@@ -458,7 +450,7 @@ efi_init (void)
         /* Show what we know for posterity */
         c16 = __va(efi.systab->fw_vendor);
         if (c16) {
-                for (i = 0;i < (int) sizeof(vendor) && *c16; ++i)
+                for (i = 0;i < (int) sizeof(vendor) - 1 && *c16; ++i)
                         vendor[i] = *c16++;
                 vendor[i] = '\0';
         }
diff --git a/arch/ia64/kernel/head.S b/arch/ia64/kernel/head.S
index fbc7ea35dd57..f1778a84ea61 100644
--- a/arch/ia64/kernel/head.S
+++ b/arch/ia64/kernel/head.S
@@ -352,6 +352,7 @@ start_ap:
         mov ar.rsc=0            // place RSE in enforced lazy mode
         ;;
         loadrs                  // clear the dirty partition
+        mov IA64_KR(PER_CPU_DATA)=r0    // clear physical per-CPU base
         ;;
         mov ar.bspstore=r2      // establish the new RSE stack
         ;;
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index c0766575a3a2..35f7835294a3 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -71,6 +71,8 @@ unsigned long __per_cpu_offset[NR_CPUS];
 EXPORT_SYMBOL(__per_cpu_offset);
 #endif
 
+extern void ia64_setup_printk_clock(void);
+
 DEFINE_PER_CPU(struct cpuinfo_ia64, cpu_info);
 DEFINE_PER_CPU(unsigned long, local_per_cpu_offset);
 DEFINE_PER_CPU(unsigned long, ia64_phys_stacked_size_p8);
@@ -445,6 +447,8 @@ setup_arch (char **cmdline_p)
         /* process SAL system table: */
         ia64_sal_init(efi.sal_systab);
 
+        ia64_setup_printk_clock();
+
 #ifdef CONFIG_SMP
         cpu_physical_id(0) = hard_smp_processor_id();
 
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index 028a2b95936c..a094ec49ccfa 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -278,3 +278,30 @@ udelay (unsigned long usecs)
         }
 }
 EXPORT_SYMBOL(udelay);
+
+static unsigned long long ia64_itc_printk_clock(void)
+{
+        if (ia64_get_kr(IA64_KR_PER_CPU_DATA))
+                return sched_clock();
+        return 0;
+}
+
+static unsigned long long ia64_default_printk_clock(void)
+{
+        return (unsigned long long)(jiffies_64 - INITIAL_JIFFIES) *
+                (1000000000/HZ);
+}
+
+unsigned long long (*ia64_printk_clock)(void) = &ia64_default_printk_clock;
+
+unsigned long long printk_clock(void)
+{
+        return ia64_printk_clock();
+}
+
+void __init
+ia64_setup_printk_clock(void)
+{
+        if (!(sal_platform_features & IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT))
+                ia64_printk_clock = ia64_itc_printk_clock;
+}
diff --git a/arch/ia64/sn/kernel/mca.c b/arch/ia64/sn/kernel/mca.c
index 9ab684d1bb55..3db62f24596c 100644
--- a/arch/ia64/sn/kernel/mca.c
+++ b/arch/ia64/sn/kernel/mca.c
@@ -3,7 +3,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2006 Silicon Graphics, Inc.  All Rights Reserved.
  */
 
 #include <linux/types.h>
@@ -137,7 +137,8 @@ int sn_salinfo_platform_oemdata(const u8 *sect_header, u8 **oemdata, u64 *oemdat
 
 static int __init sn_salinfo_init(void)
 {
-        salinfo_platform_oemdata = &sn_salinfo_platform_oemdata;
+        if (ia64_platform_is("sn2"))
+                salinfo_platform_oemdata = &sn_salinfo_platform_oemdata;
         return 0;
 }
 
diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index aac1ba32c5e5..48645ac120fc 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -67,6 +67,7 @@ extern unsigned long last_time_offset;
 extern void (*ia64_mark_idle) (int);
 extern void snidle(int);
 extern unsigned char acpi_kbd_controller_present;
+extern unsigned long long (*ia64_printk_clock)(void);
 
 unsigned long sn_rtc_cycles_per_second;
 EXPORT_SYMBOL(sn_rtc_cycles_per_second);
@@ -358,6 +359,16 @@ sn_scan_pcdp(void)
         }
 }
 
+static unsigned long sn2_rtc_initial;
+
+static unsigned long long ia64_sn2_printk_clock(void)
+{
+        unsigned long rtc_now = rtc_time();
+
+        return (rtc_now - sn2_rtc_initial) *
+                (1000000000 / sn_rtc_cycles_per_second);
+}
+
 /**
  * sn_setup - SN platform setup routine
  * @cmdline_p: kernel command line
@@ -372,6 +383,7 @@ void __init sn_setup(char **cmdline_p)
         u32 version = sn_sal_rev();
         extern void sn_cpu_init(void);
 
+        sn2_rtc_initial = rtc_time();
         ia64_sn_plat_set_error_handling_features();     // obsolete
         ia64_sn_set_os_feature(OSF_MCA_SLV_TO_OS_INIT_SLV);
         ia64_sn_set_os_feature(OSF_FEAT_LOG_SBES);
@@ -423,19 +435,6 @@ void __init sn_setup(char **cmdline_p)
          */
         build_cnode_tables();
 
-        /*
-         * Old PROMs do not provide an ACPI FADT. Disable legacy keyboard
-         * support here so we don't have to listen to failed keyboard probe
-         * messages.
-         */
-        if (version <= 0x0209 && acpi_kbd_controller_present) {
-                printk(KERN_INFO "Disabling legacy keyboard support as prom "
-                       "is too old and doesn't provide FADT\n");
-                acpi_kbd_controller_present = 0;
-        }
-
-        printk("SGI SAL version %x.%02x\n", version >> 8, version & 0x00FF);
-
         status =
             ia64_sal_freq_base(SAL_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec,
                                &drift);
@@ -449,6 +448,21 @@ void __init sn_setup(char **cmdline_p)
 
         platform_intr_list[ACPI_INTERRUPT_CPEI] = IA64_CPE_VECTOR;
 
+        ia64_printk_clock = ia64_sn2_printk_clock;
+
+        /*
+         * Old PROMs do not provide an ACPI FADT. Disable legacy keyboard
+         * support here so we don't have to listen to failed keyboard probe
+         * messages.
+         */
+        if (version <= 0x0209 && acpi_kbd_controller_present) {
+                printk(KERN_INFO "Disabling legacy keyboard support as prom "
+                       "is too old and doesn't provide FADT\n");
+                acpi_kbd_controller_present = 0;
+        }
+
+        printk("SGI SAL version %x.%02x\n", version >> 8, version & 0x00FF);
+
         /*
          * we set the default root device to /dev/hda
          * to make simulation easy
diff --git a/arch/ia64/sn/kernel/sn2/sn_hwperf.c b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
index 19b54fbcd7ea..70db21f3df21 100644
--- a/arch/ia64/sn/kernel/sn2/sn_hwperf.c
+++ b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
@@ -3,7 +3,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2004-2005 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
  *
  * SGI Altix topology and hardware performance monitoring API.
  * Mark Goodwin <markgw@sgi.com>. 
@@ -973,6 +973,9 @@ static int __devinit sn_hwperf_misc_register_init(void)
 {
         int e;
 
+        if (!ia64_platform_is("sn2"))
+                return 0;
+
         sn_hwperf_init();
 
         /*