[POWERPC] Various fixes to pcibios_enable_device()

[linux-2.6-omap-h63xx.git] / arch / powerpc / kernel / prom.c

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 0028fe68e09e8379895a4b32e62686667d15cfa7..6c2d8836f77dcf9b87c80db13b738449ca1bcdeb 100644 (file)
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -430,9 +430,11 @@ static int __init early_parse_mem(char *p)
 }
 early_param("mem", early_parse_mem);
 
-/*
- * The device tree may be allocated below our memory limit, or inside the
- * crash kernel region for kdump. If so, move it out now.
+/**
+ * move_device_tree - move tree to an unused area, if needed.
+ *
+ * The device tree may be allocated beyond our memory limit, or inside the
+ * crash kernel region for kdump. If so, move it out of the way.
  */
 static void move_device_tree(void)
 {
@@ -529,10 +531,7 @@ static struct ibm_pa_feature {
        {CPU_FTR_CTRL, 0,               0, 3, 0},
        {CPU_FTR_NOEXECUTE, 0,          0, 6, 0},
        {CPU_FTR_NODSISRALIGN, 0,       1, 1, 1},
-#if 0
-       /* put this back once we know how to test if firmware does 64k IO */
        {CPU_FTR_CI_LARGE_PAGE, 0,      1, 2, 0},
-#endif
        {CPU_FTR_REAL_LE, PPC_FEATURE_TRUE_LE, 5, 0, 0},
 };
 
@@ -584,6 +583,20 @@ static void __init check_cpu_pa_features(unsigned long node)
                      ibm_pa_features, ARRAY_SIZE(ibm_pa_features));
 }
 
+#ifdef CONFIG_PPC64
+static void __init check_cpu_slb_size(unsigned long node)
+{
+       u32 *slb_size_ptr;
+
+       slb_size_ptr = of_get_flat_dt_prop(node, "ibm,slb-size", NULL);
+       if (slb_size_ptr != NULL) {
+               mmu_slb_size = *slb_size_ptr;
+       }
+}
+#else
+#define check_cpu_slb_size(node) do { } while(0)
+#endif
+
 static struct feature_property {
        const char *name;
        u32 min_value;
@@ -698,10 +711,23 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
                prop = of_get_flat_dt_prop(node, "cpu-version", NULL);
                if (prop && (*prop & 0xff000000) == 0x0f000000)
                        identify_cpu(0, *prop);
+#if defined(CONFIG_44x) && defined(CONFIG_PPC_FPU)
+               /*
+                * Since 440GR(x)/440EP(x) processors have the same pvr,
+                * we check the node path and set bit 28 in the cur_cpu_spec
+                * pvr for EP(x) processor version. This bit is always 0 in
+                * the "real" pvr. Then we call identify_cpu again with
+                * the new logical pvr to enable FPU support.
+                */
+               if (strstr(uname, "440EP")) {
+                       identify_cpu(0, cur_cpu_spec->pvr_value | 0x8);
+               }
+#endif
        }
 
        check_cpu_feature_properties(node);
        check_cpu_pa_features(node);
+       check_cpu_slb_size(node);
 
 #ifdef CONFIG_PPC_PSERIES
        if (nthreads > 1)
@@ -779,13 +805,13 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
 #endif
 
 #ifdef CONFIG_KEXEC
-       lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL);
-       if (lprop)
-               crashk_res.start = *lprop;
+       lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL);
+       if (lprop)
+               crashk_res.start = *lprop;
 
-       lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-size", NULL);
-       if (lprop)
-               crashk_res.end = crashk_res.start + *lprop - 1;
+       lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-size", NULL);
+       if (lprop)
+               crashk_res.end = crashk_res.start + *lprop - 1;
 #endif
 
        early_init_dt_check_for_initrd(node);