1 files changed, 33 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 19e8fcb9cea8..4efebe88e64a 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -101,6 +101,10 @@ notrace unsigned long __init early_init(unsigned long dt_ptr)
                           PTRRELOC(&__start___ftr_fixup),
                           PTRRELOC(&__stop___ftr_fixup));
 
+        do_lwsync_fixups(spec->cpu_features,
+                         PTRRELOC(&__start___lwsync_fixup),
+                         PTRRELOC(&__stop___lwsync_fixup));
+
         return KERNELBASE + offset;
 }
 
@@ -127,6 +131,11 @@ notrace void __init machine_init(unsigned long dt_ptr, unsigned long phys)
                 ppc_md.power_save = ppc6xx_idle;
 #endif
 
+#ifdef CONFIG_E500
+        if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
+            cpu_has_feature(CPU_FTR_CAN_NAP))
+                ppc_md.power_save = e500_idle;
+#endif
         if (ppc_md.progress)
                 ppc_md.progress("id mach(): done", 0x200);
 }
@@ -248,6 +257,28 @@ static void __init irqstack_early_init(void)
 #define irqstack_early_init()
 #endif
 
+#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
+static void __init exc_lvl_early_init(void)
+{
+        unsigned int i;
+
+        /* interrupt stacks must be in lowmem, we get that for free on ppc32
+         * as the lmb is limited to lowmem by LMB_REAL_LIMIT */
+        for_each_possible_cpu(i) {
+                critirq_ctx[i] = (struct thread_info *)
+                        __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+#ifdef CONFIG_BOOKE
+                dbgirq_ctx[i] = (struct thread_info *)
+                        __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+                mcheckirq_ctx[i] = (struct thread_info *)
+                        __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+#endif
+        }
+}
+#else
+#define exc_lvl_early_init()
+#endif
+
 /* Warning, IO base is not yet inited */
 void __init setup_arch(char **cmdline_p)
 {
@@ -305,6 +336,8 @@ void __init setup_arch(char **cmdline_p)
         init_mm.end_data = (unsigned long) _edata;
         init_mm.brk = klimit;
 
+        exc_lvl_early_init();
+
         irqstack_early_init();
 
         /* set up the bootmem stuff with available memory */