Pull button into test branch

[pandora-kernel.git] / arch / ia64 / sn / kernel / setup.c

diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index 7a2d824..8571e52 100644 (file)
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -388,6 +388,14 @@ void __init sn_setup(char **cmdline_p)
        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);
+       /*
+        * Note: The calls to notify the PROM of ACPI and PCI Segment
+        *       support must be done prior to acpi_load_tables(), as
+        *       an ACPI capable PROM will rebuild the DSDT as result
+        *       of the call.
+        */
+       ia64_sn_set_os_feature(OSF_PCISEGMENT_ENABLE);
+       ia64_sn_set_os_feature(OSF_ACPI_ENABLE);
 
 
 #if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
@@ -413,6 +421,16 @@ void __init sn_setup(char **cmdline_p)
        if (! vga_console_membase)
                sn_scan_pcdp();
 
+       /*
+        *      Setup legacy IO space.
+        *      vga_console_iobase maps to PCI IO Space address 0 on the
+        *      bus containing the VGA console.
+        */
+       if (vga_console_iobase) {
+               io_space[0].mmio_base = vga_console_iobase;
+               io_space[0].sparse = 0;
+       }
+
        if (vga_console_membase) {
                /* usable vga ... make tty0 the preferred default console */
                if (!strstr(*cmdline_p, "console="))
@@ -562,7 +580,7 @@ void __cpuinit sn_cpu_init(void)
        int slice;
        int cnode;
        int i;
-       static int wars_have_been_checked;
+       static int wars_have_been_checked, set_cpu0_number;
 
        cpuid = smp_processor_id();
        if (cpuid == 0 && IS_MEDUSA()) {
@@ -587,8 +605,16 @@ void __cpuinit sn_cpu_init(void)
        /*
         * Don't check status. The SAL call is not supported on all PROMs
         * but a failure is harmless.
+        * Architechtuallly, cpu_init is always called twice on cpu 0. We
+        * should set cpu_number on cpu 0 once.
         */
-       (void) ia64_sn_set_cpu_number(cpuid);
+       if (cpuid == 0) {
+               if (!set_cpu0_number) {
+                       (void) ia64_sn_set_cpu_number(cpuid);
+                       set_cpu0_number = 1;
+               }
+       } else
+               (void) ia64_sn_set_cpu_number(cpuid);
 
        /*
         * The boot cpu makes this call again after platform initialization is
@@ -751,5 +777,13 @@ int sn_prom_feature_available(int id)
                return 0;
        return test_bit(id, sn_prom_features);
 }
+
+void
+sn_kernel_launch_event(void)
+{
+       /* ignore status until we understand possible failure, if any*/
+       if (ia64_sn_kernel_launch_event())
+               printk(KERN_ERR "KEXEC is not supported in this PROM, Please update the PROM.\n");
+}
 EXPORT_SYMBOL(sn_prom_feature_available);