Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

[mirror_ubuntu-zesty-kernel.git] / arch / powerpc / kernel / setup_64.c

diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 81567e931260e951a31083aa2bf2fb3da9c865cf..2f3fdad35594335818fc2842aac001506b26029f 100644 (file)
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -33,6 +33,7 @@
 #include <linux/unistd.h>
 #include <linux/serial.h>
 #include <linux/serial_8250.h>
+#include <linux/bootmem.h>
 #include <asm/io.h>
 #include <asm/kdump.h>
 #include <asm/prom.h>
@@ -70,33 +71,6 @@
 #define DBG(fmt...)
 #endif
 
-/*
- * Here are some early debugging facilities. You can enable one
- * but your kernel will not boot on anything else if you do so
- */
-
-/* This one is for use on LPAR machines that support an HVC console
- * on vterm 0
- */
-extern void udbg_init_debug_lpar(void);
-/* This one is for use on Apple G5 machines
- */
-extern void udbg_init_pmac_realmode(void);
-/* That's RTAS panel debug */
-extern void call_rtas_display_status_delay(unsigned char c);
-/* Here's maple real mode debug */
-extern void udbg_init_maple_realmode(void);
-
-#define EARLY_DEBUG_INIT() do {} while(0)
-
-#if 0
-#define EARLY_DEBUG_INIT() udbg_init_debug_lpar()
-#define EARLY_DEBUG_INIT() udbg_init_maple_realmode()
-#define EARLY_DEBUG_INIT() udbg_init_pmac_realmode()
-#define EARLY_DEBUG_INIT()                                             \
-       do { udbg_putc = call_rtas_display_status_delay; } while(0)
-#endif
-
 int have_of = 1;
 int boot_cpuid = 0;
 int boot_cpuid_phys = 0;
@@ -237,11 +211,8 @@ void __init early_setup(unsigned long dt_ptr)
        struct paca_struct *lpaca = get_paca();
        static struct machdep_calls **mach;
 
-       /*
-        * Enable early debugging if any specified (see top of
-        * this file)
-        */
-       EARLY_DEBUG_INIT();
+       /* Enable early debugging if any specified (see udbg.h) */
+       udbg_early_init();
 
        DBG(" -> early_setup()\n");
 
@@ -340,8 +311,6 @@ void smp_release_cpus(void)
 
        DBG(" <- smp_release_cpus()\n");
 }
-#else
-#define smp_release_cpus()
 #endif /* CONFIG_SMP || CONFIG_KEXEC */
 
 /*
@@ -427,6 +396,9 @@ void __init setup_system(void)
 {
        DBG(" -> setup_system()\n");
 
+#ifdef CONFIG_KEXEC
+       kdump_move_device_tree();
+#endif
        /*
         * Unflatten the device-tree passed by prom_init or kexec
         */
@@ -472,9 +444,7 @@ void __init setup_system(void)
         * hash table management for us, thus ioremap works. We do that early
         * so that further code can be debugged
         */
-#ifdef CONFIG_SERIAL_8250
        find_legacy_serial_ports();
-#endif
 
        /*
         * "Finish" the device-tree, that is do the actual parsing of
@@ -501,10 +471,12 @@ void __init setup_system(void)
        check_smt_enabled();
        smp_setup_cpu_maps();
 
+#ifdef CONFIG_SMP
        /* Release secondary cpus out of their spinloops at 0x60 now that
         * we can map physical -> logical CPU ids
         */
        smp_release_cpus();
+#endif
 
        printk("Starting Linux PPC64 %s\n", system_utsname.version);
 
@@ -525,8 +497,6 @@ void __init setup_system(void)
 #endif
        printk("-----------------------------------------------------\n");
 
-       mm_init_ppc64();
-
        DBG(" <- setup_system()\n");
 }
 
@@ -686,3 +656,28 @@ void cpu_die(void)
        if (ppc_md.cpu_die)
                ppc_md.cpu_die();
 }
+
+#ifdef CONFIG_SMP
+void __init setup_per_cpu_areas(void)
+{
+       int i;
+       unsigned long size;
+       char *ptr;
+
+       /* Copy section for each CPU (we discard the original) */
+       size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
+#ifdef CONFIG_MODULES
+       if (size < PERCPU_ENOUGH_ROOM)
+               size = PERCPU_ENOUGH_ROOM;
+#endif
+
+       for_each_cpu(i) {
+               ptr = alloc_bootmem_node(NODE_DATA(cpu_to_node(i)), size);
+               if (!ptr)
+                       panic("Cannot allocate cpu data for CPU %d\n", i);
+
+               paca[i].data_offset = ptr - __per_cpu_start;
+               memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
+       }
+}
+#endif