1 files changed, 17 insertions, 66 deletions

diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index f96c49b03ba0..59aa92cd6fa4 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -73,7 +73,6 @@
 
 int have_of = 1;
 int boot_cpuid = 0;
-int boot_cpuid_phys = 0;
 dev_t boot_dev;
 u64 ppc64_pft_size;
 
@@ -96,11 +95,6 @@ int dcache_bsize;
 int icache_bsize;
 int ucache_bsize;
 
-/* The main machine-dep calls structure
- */
-struct machdep_calls ppc_md;
-EXPORT_SYMBOL(ppc_md);
-
 #ifdef CONFIG_MAGIC_SYSRQ
 unsigned long SYSRQ_KEY;
 #endif /* CONFIG_MAGIC_SYSRQ */
@@ -161,32 +155,6 @@ early_param("smt-enabled", early_smt_enabled);
 #define check_smt_enabled()
 #endif /* CONFIG_SMP */
 
-extern struct machdep_calls pSeries_md;
-extern struct machdep_calls pmac_md;
-extern struct machdep_calls maple_md;
-extern struct machdep_calls cell_md;
-extern struct machdep_calls iseries_md;
-
-/* Ultimately, stuff them in an elf section like initcalls... */
-static struct machdep_calls __initdata *machines[] = {
-#ifdef CONFIG_PPC_PSERIES
-        &pSeries_md,
-#endif /* CONFIG_PPC_PSERIES */
-#ifdef CONFIG_PPC_PMAC
-        &pmac_md,
-#endif /* CONFIG_PPC_PMAC */
-#ifdef CONFIG_PPC_MAPLE
-        &maple_md,
-#endif /* CONFIG_PPC_MAPLE */
-#ifdef CONFIG_PPC_CELL
-        &cell_md,
-#endif
-#ifdef CONFIG_PPC_ISERIES
-        &iseries_md,
-#endif
-        NULL
-};
-
 /*
  * Early initialization entry point. This is called by head.S
  * with MMU translation disabled. We rely on the "feature" of
@@ -208,13 +176,10 @@ static struct machdep_calls __initdata *machines[] = {
 
 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 udbg.h) */
         udbg_early_init();
 
-        DBG(" -> early_setup()\n");
+        DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr);
 
         /*
          * Do early initializations using the flattened device
@@ -223,22 +188,16 @@ void __init early_setup(unsigned long dt_ptr)
          */
         early_init_devtree(__va(dt_ptr));
 
-        /*
-         * Iterate all ppc_md structures until we find the proper
-         * one for the current machine type
-         */
-        DBG("Probing machine type for platform %x...\n", _machine);
+        /* Now we know the logical id of our boot cpu, setup the paca. */
+        setup_boot_paca();
 
-        for (mach = machines; *mach; mach++) {
-                if ((*mach)->probe(_machine))
-                        break;
-        }
-        /* What can we do if we didn't find ? */
-        if (*mach == NULL) {
-                DBG("No suitable machine found !\n");
-                for (;;);
-        }
-        ppc_md = **mach;
+        /* Fix up paca fields required for the boot cpu */
+        get_paca()->cpu_start = 1;
+        get_paca()->stab_real = __pa((u64)&initial_stab);
+        get_paca()->stab_addr = (u64)&initial_stab;
+
+        /* Probe the machine type */
+        probe_machine();
 
 #ifdef CONFIG_CRASH_DUMP
         kdump_setup();
@@ -260,7 +219,7 @@ void __init early_setup(unsigned long dt_ptr)
                 if (cpu_has_feature(CPU_FTR_SLB))
                         slb_initialize();
                 else
-                        stab_initialize(lpaca->stab_real);
+                        stab_initialize(get_paca()->stab_real);
         }
 
         DBG(" <- early_setup()\n");
@@ -340,7 +299,7 @@ static void __init initialize_cache_info(void)
                         const char *dc, *ic;
 
                         /* Then read cache informations */
-                        if (_machine == PLATFORM_POWERMAC) {
+                        if (machine_is(powermac)) {
                                 dc = "d-cache-block-size";
                                 ic = "i-cache-block-size";
                         } else {
@@ -484,7 +443,6 @@ void __init setup_system(void)
         printk("ppc64_pft_size                = 0x%lx\n", ppc64_pft_size);
         printk("ppc64_interrupt_controller    = 0x%ld\n",
                ppc64_interrupt_controller);
-        printk("platform                      = 0x%x\n", _machine);
         printk("physicalMemorySize            = 0x%lx\n", lmb_phys_mem_size());
         printk("ppc64_caches.dcache_line_size = 0x%x\n",
                ppc64_caches.dline_size);
@@ -497,8 +455,6 @@ void __init setup_system(void)
 #endif
         printk("-----------------------------------------------------\n");
 
-        mm_init_ppc64();
-
         DBG(" <- setup_system()\n");
 }
 
@@ -518,7 +474,7 @@ static void __init irqstack_early_init(void)
          * interrupt stacks must be under 256MB, we cannot afford to take
          * SLB misses on them.
          */
-        for_each_cpu(i) {
+        for_each_possible_cpu(i) {
                 softirq_ctx[i] = (struct thread_info *)
                         __va(lmb_alloc_base(THREAD_SIZE,
                                             THREAD_SIZE, 0x10000000));
@@ -551,7 +507,7 @@ static void __init emergency_stack_init(void)
          */
         limit = min(0x10000000UL, lmb.rmo_size);
 
-        for_each_cpu(i)
+        for_each_possible_cpu(i)
                 paca[i].emergency_sp =
                 __va(lmb_alloc_base(HW_PAGE_SIZE, 128, limit)) + HW_PAGE_SIZE;
 }
@@ -581,7 +537,8 @@ void __init setup_arch(char **cmdline_p)
         panic_timeout = 180;
 
         if (ppc_md.panic)
-                notifier_chain_register(&panic_notifier_list, &ppc64_panic_block);
+                atomic_notifier_chain_register(&panic_notifier_list,
+                                &ppc64_panic_block);
 
         init_mm.start_code = PAGE_OFFSET;
         init_mm.end_code = (unsigned long) _etext;
@@ -603,12 +560,6 @@ void __init setup_arch(char **cmdline_p)
 
         ppc_md.setup_arch();
 
-        /* Use the default idle loop if the platform hasn't provided one. */
-        if (NULL == ppc_md.idle_loop) {
-                ppc_md.idle_loop = default_idle;
-                printk(KERN_INFO "Using default idle loop\n");
-        }
-
         paging_init();
         ppc64_boot_msg(0x15, "Setup Done");
 }
@@ -673,7 +624,7 @@ void __init setup_per_cpu_areas(void)
                 size = PERCPU_ENOUGH_ROOM;
 #endif
 
-        for_each_cpu(i) {
+        for_each_possible_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);