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-rw-r--r--arch/powerpc/kernel/setup_64.c2
-rw-r--r--arch/powerpc/mm/init_64.c48
2 files changed, 0 insertions, 50 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index f96c49b03ba0..2f3fdad35594 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -497,8 +497,6 @@ void __init setup_system(void)
497#endif 497#endif
498 printk("-----------------------------------------------------\n"); 498 printk("-----------------------------------------------------\n");
499 499
500 mm_init_ppc64();
501
502 DBG(" <- setup_system()\n"); 500 DBG(" <- setup_system()\n");
503} 501}
504 502
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 81cfb0c2ec58..5d4733d61805 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -84,54 +84,6 @@
84/* max amount of RAM to use */ 84/* max amount of RAM to use */
85unsigned long __max_memory; 85unsigned long __max_memory;
86 86
87/* info on what we think the IO hole is */
88unsigned long io_hole_start;
89unsigned long io_hole_size;
90
91/*
92 * Do very early mm setup.
93 */
94void __init mm_init_ppc64(void)
95{
96#ifndef CONFIG_PPC_ISERIES
97 unsigned long i;
98#endif
99
100 ppc64_boot_msg(0x100, "MM Init");
101
102 /* This is the story of the IO hole... please, keep seated,
103 * unfortunately, we are out of oxygen masks at the moment.
104 * So we need some rough way to tell where your big IO hole
105 * is. On pmac, it's between 2G and 4G, on POWER3, it's around
106 * that area as well, on POWER4 we don't have one, etc...
107 * We need that as a "hint" when sizing the TCE table on POWER3
108 * So far, the simplest way that seem work well enough for us it
109 * to just assume that the first discontinuity in our physical
110 * RAM layout is the IO hole. That may not be correct in the future
111 * (and isn't on iSeries but then we don't care ;)
112 */
113
114#ifndef CONFIG_PPC_ISERIES
115 for (i = 1; i < lmb.memory.cnt; i++) {
116 unsigned long base, prevbase, prevsize;
117
118 prevbase = lmb.memory.region[i-1].base;
119 prevsize = lmb.memory.region[i-1].size;
120 base = lmb.memory.region[i].base;
121 if (base > (prevbase + prevsize)) {
122 io_hole_start = prevbase + prevsize;
123 io_hole_size = base - (prevbase + prevsize);
124 break;
125 }
126 }
127#endif /* CONFIG_PPC_ISERIES */
128 if (io_hole_start)
129 printk("IO Hole assumed to be %lx -> %lx\n",
130 io_hole_start, io_hole_start + io_hole_size - 1);
131
132 ppc64_boot_msg(0x100, "MM Init Done");
133}
134
135void free_initmem(void) 87void free_initmem(void)
136{ 88{
137 unsigned long addr; 89 unsigned long addr;