powerpc: Initialise pci_io_base as early as possible

[cascardo/linux.git] / arch / powerpc / mm / pgtable-radix.c

diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index 18b2c11..7931e14 100644 (file)
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c
@@ -160,9 +160,8 @@ redo:
        process_tb = early_alloc_pgtable(1UL << PRTB_SIZE_SHIFT);
        /*
         * Fill in the process table.
-        * we support 52 bits, hence 52-28 = 24, 11000
         */
-       rts_field = 3ull << PPC_BITLSHIFT(2);
+       rts_field = radix__get_tree_size();
        process_tb->prtb0 = cpu_to_be64(rts_field | __pa(init_mm.pgd) | RADIX_PGD_INDEX_SIZE);
        /*
         * Fill in the partition table. We are suppose to use effective address
@@ -176,10 +175,8 @@ redo:
 static void __init radix_init_partition_table(void)
 {
        unsigned long rts_field;
-       /*
-        * we support 52 bits, hence 52-28 = 24, 11000
-        */
-       rts_field = 3ull << PPC_BITLSHIFT(2);
+
+       rts_field = radix__get_tree_size();
 
        BUILD_BUG_ON_MSG((PATB_SIZE_SHIFT > 24), "Partition table size too large.");
        partition_tb = early_alloc_pgtable(1UL << PATB_SIZE_SHIFT);
@@ -296,11 +293,6 @@ found:
 void __init radix__early_init_mmu(void)
 {
        unsigned long lpcr;
-       /*
-        * setup LPCR UPRT based on mmu_features
-        */
-       lpcr = mfspr(SPRN_LPCR);
-       mtspr(SPRN_LPCR, lpcr | LPCR_UPRT);
 
 #ifdef CONFIG_PPC_64K_PAGES
        /* PAGE_SIZE mappings */
@@ -336,6 +328,11 @@ void __init radix__early_init_mmu(void)
        __vmalloc_end = RADIX_VMALLOC_END;
        vmemmap = (struct page *)RADIX_VMEMMAP_BASE;
        ioremap_bot = IOREMAP_BASE;
+
+#ifdef CONFIG_PCI
+       pci_io_base = ISA_IO_BASE;
+#endif
+
        /*
         * For now radix also use the same frag size
         */
@@ -343,8 +340,11 @@ void __init radix__early_init_mmu(void)
        __pte_frag_size_shift = H_PTE_FRAG_SIZE_SHIFT;
 
        radix_init_page_sizes();
-       if (!firmware_has_feature(FW_FEATURE_LPAR))
+       if (!firmware_has_feature(FW_FEATURE_LPAR)) {
+               lpcr = mfspr(SPRN_LPCR);
+               mtspr(SPRN_LPCR, lpcr | LPCR_UPRT);
                radix_init_partition_table();
+       }
 
        radix_init_pgtable();
 }
@@ -353,16 +353,15 @@ void radix__early_init_mmu_secondary(void)
 {
        unsigned long lpcr;
        /*
-        * setup LPCR UPRT based on mmu_features
-        */
-       lpcr = mfspr(SPRN_LPCR);
-       mtspr(SPRN_LPCR, lpcr | LPCR_UPRT);
-       /*
-        * update partition table control register, 64 K size.
+        * update partition table control register and UPRT
         */
-       if (!firmware_has_feature(FW_FEATURE_LPAR))
+       if (!firmware_has_feature(FW_FEATURE_LPAR)) {
+               lpcr = mfspr(SPRN_LPCR);
+               mtspr(SPRN_LPCR, lpcr | LPCR_UPRT);
+
                mtspr(SPRN_PTCR,
                      __pa(partition_tb) | (PATB_SIZE_SHIFT - 12));
+       }
 }
 
 void radix__setup_initial_memory_limit(phys_addr_t first_memblock_base,