diff options
Diffstat (limited to 'arch/microblaze/mm/pgtable.c')
-rw-r--r-- | arch/microblaze/mm/pgtable.c | 51 |
1 files changed, 15 insertions, 36 deletions
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c index d31312cde6ea..784557fb28cf 100644 --- a/arch/microblaze/mm/pgtable.c +++ b/arch/microblaze/mm/pgtable.c | |||
@@ -161,24 +161,6 @@ int map_page(unsigned long va, phys_addr_t pa, int flags) | |||
161 | return err; | 161 | return err; |
162 | } | 162 | } |
163 | 163 | ||
164 | void __init adjust_total_lowmem(void) | ||
165 | { | ||
166 | /* TBD */ | ||
167 | #if 0 | ||
168 | unsigned long max_low_mem = MAX_LOW_MEM; | ||
169 | |||
170 | if (total_lowmem > max_low_mem) { | ||
171 | total_lowmem = max_low_mem; | ||
172 | #ifndef CONFIG_HIGHMEM | ||
173 | printk(KERN_INFO "Warning, memory limited to %ld Mb, use " | ||
174 | "CONFIG_HIGHMEM to reach %ld Mb\n", | ||
175 | max_low_mem >> 20, total_memory >> 20); | ||
176 | total_memory = total_lowmem; | ||
177 | #endif /* CONFIG_HIGHMEM */ | ||
178 | } | ||
179 | #endif | ||
180 | } | ||
181 | |||
182 | /* | 164 | /* |
183 | * Map in all of physical memory starting at CONFIG_KERNEL_START. | 165 | * Map in all of physical memory starting at CONFIG_KERNEL_START. |
184 | */ | 166 | */ |
@@ -206,24 +188,6 @@ void __init mapin_ram(void) | |||
206 | /* is x a power of 2? */ | 188 | /* is x a power of 2? */ |
207 | #define is_power_of_2(x) ((x) != 0 && (((x) & ((x) - 1)) == 0)) | 189 | #define is_power_of_2(x) ((x) != 0 && (((x) & ((x) - 1)) == 0)) |
208 | 190 | ||
209 | /* | ||
210 | * Set up a mapping for a block of I/O. | ||
211 | * virt, phys, size must all be page-aligned. | ||
212 | * This should only be called before ioremap is called. | ||
213 | */ | ||
214 | void __init io_block_mapping(unsigned long virt, phys_addr_t phys, | ||
215 | unsigned int size, int flags) | ||
216 | { | ||
217 | int i; | ||
218 | |||
219 | if (virt > CONFIG_KERNEL_START && virt < ioremap_bot) | ||
220 | ioremap_bot = ioremap_base = virt; | ||
221 | |||
222 | /* Put it in the page tables. */ | ||
223 | for (i = 0; i < size; i += PAGE_SIZE) | ||
224 | map_page(virt + i, phys + i, flags); | ||
225 | } | ||
226 | |||
227 | /* Scan the real Linux page tables and return a PTE pointer for | 191 | /* Scan the real Linux page tables and return a PTE pointer for |
228 | * a virtual address in a context. | 192 | * a virtual address in a context. |
229 | * Returns true (1) if PTE was found, zero otherwise. The pointer to | 193 | * Returns true (1) if PTE was found, zero otherwise. The pointer to |
@@ -274,3 +238,18 @@ unsigned long iopa(unsigned long addr) | |||
274 | 238 | ||
275 | return pa; | 239 | return pa; |
276 | } | 240 | } |
241 | |||
242 | __init_refok pte_t *pte_alloc_one_kernel(struct mm_struct *mm, | ||
243 | unsigned long address) | ||
244 | { | ||
245 | pte_t *pte; | ||
246 | if (mem_init_done) { | ||
247 | pte = (pte_t *)__get_free_page(GFP_KERNEL | | ||
248 | __GFP_REPEAT | __GFP_ZERO); | ||
249 | } else { | ||
250 | pte = (pte_t *)early_get_page(); | ||
251 | if (pte) | ||
252 | clear_page(pte); | ||
253 | } | ||
254 | return pte; | ||
255 | } | ||