+unsigned long wii_hole_start;
+unsigned long wii_hole_size;
+
+
+static int __init page_aligned(unsigned long x)
+{
+ return !(x & (PAGE_SIZE-1));
+}
+
+void __init wii_memory_fixups(void)
+{
+ struct lmb_property *p = lmb.memory.region;
+
+ /*
+ * This is part of a workaround to allow the use of two
+ * discontiguous RAM ranges on the Wii, even if this is
+ * currently unsupported on 32-bit PowerPC Linux.
+ *
+ * We coealesce the two memory ranges of the Wii into a
+ * single range, then create a reservation for the "hole"
+ * between both ranges.
+ */
+
+ BUG_ON(lmb.memory.cnt != 2);
+ BUG_ON(!page_aligned(p[0].base) || !page_aligned(p[1].base));
+
+ p[0].size = _ALIGN_DOWN(p[0].size, PAGE_SIZE);
+ p[1].size = _ALIGN_DOWN(p[1].size, PAGE_SIZE);
+
+ wii_hole_start = p[0].base + p[0].size;
+ wii_hole_size = p[1].base - wii_hole_start;
+
+ pr_info("MEM1: <%08llx %08llx>\n", p[0].base, p[0].size);
+ pr_info("HOLE: <%08lx %08lx>\n", wii_hole_start, wii_hole_size);
+ pr_info("MEM2: <%08llx %08llx>\n", p[1].base, p[1].size);
+
+ p[0].size += wii_hole_size + p[1].size;
+
+ lmb.memory.cnt = 1;
+ lmb_analyze();
+
+ /* reserve the hole */
+ lmb_reserve(wii_hole_start, wii_hole_size);
+}
+
+unsigned long __init wii_mmu_mapin_mem2(unsigned long top)
+{
+ unsigned long delta, size, bl;
+ unsigned long max_size = (256<<20);
+
+ /* MEM2 64MB@0x10000000 */
+ delta = wii_hole_start + wii_hole_size;
+ size = top - delta;
+ for (bl = 128<<10; bl < max_size; bl <<= 1) {
+ if (bl * 2 > size)
+ break;
+ }
+ setbat(4, PAGE_OFFSET+delta, delta, bl, PAGE_KERNEL_X);
+ return delta + bl;
+}
+