1 files changed, 26 insertions, 7 deletions

diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c
index e97ea8fc8dc4..eb1a12ac9e33 100644
--- a/arch/blackfin/mm/init.c
+++ b/arch/blackfin/mm/init.c
@@ -128,8 +128,8 @@ void __init paging_init(void)
 void __init mem_init(void)
 {
         unsigned int codek = 0, datak = 0, initk = 0;
+        unsigned int reservedpages = 0, freepages = 0;
         unsigned long tmp;
-        unsigned int len = _ramend - _rambase;
         unsigned long start_mem = memory_start;
         unsigned long end_mem = memory_end;
 
@@ -138,19 +138,36 @@ void __init mem_init(void)
 
         start_mem = PAGE_ALIGN(start_mem);
         max_mapnr = num_physpages = MAP_NR(high_memory);
-        printk(KERN_INFO "Physical pages: %lx\n", num_physpages);
+        printk(KERN_INFO "Kernel managed physical pages: %lu\n",
+                num_physpages);
 
         /* This will put all memory onto the freelists. */
         totalram_pages = free_all_bootmem();
 
+        reservedpages = 0;
+        for (tmp = 0; tmp < max_mapnr; tmp++)
+                if (PageReserved(pfn_to_page(tmp)))
+                        reservedpages++;
+        freepages =  max_mapnr - reservedpages;
+
+        /* do not count in kernel image between _rambase and _ramstart */
+        reservedpages -= (_ramstart - _rambase) >> PAGE_SHIFT;
+#if (defined(CONFIG_BFIN_ICACHE) && ANOMALY_05000263)
+        reservedpages += (_ramend - memory_end - DMA_UNCACHED_REGION) >>
+                                PAGE_SHIFT;
+#endif
+
         codek = (_etext - _stext) >> 10;
-        datak = (__bss_stop - __bss_start) >> 10;
         initk = (__init_end - __init_begin) >> 10;
+        datak = ((_ramstart - _rambase) >> 10) - codek - initk;
 
-        tmp = nr_free_pages() << PAGE_SHIFT;
         printk(KERN_INFO
-             "Memory available: %luk/%uk RAM, (%uk init code, %uk kernel code, %uk data, %uk dma)\n",
-             tmp >> 10, len >> 10, initk, codek, datak, DMA_UNCACHED_REGION >> 10);
+             "Memory available: %luk/%luk RAM, "
+                "(%uk init code, %uk kernel code, "
+                "%uk data, %uk dma, %uk reserved)\n",
+                (unsigned long) freepages << (PAGE_SHIFT-10), _ramend >> 10,
+                initk, codek, datak, DMA_UNCACHED_REGION >> 10,
+                (reservedpages << (PAGE_SHIFT-10)));
 
         /* Initialize the blackfin L1 Memory. */
         l1sram_init();
@@ -184,13 +201,15 @@ static __init void free_init_pages(const char *what, unsigned long begin, unsign
 #ifdef CONFIG_BLK_DEV_INITRD
 void __init free_initrd_mem(unsigned long start, unsigned long end)
 {
+#ifndef CONFIG_MPU
         free_init_pages("initrd memory", start, end);
+#endif
 }
 #endif
 
 void __init free_initmem(void)
 {
-#ifdef CONFIG_RAMKERNEL
+#if defined CONFIG_RAMKERNEL && !defined CONFIG_MPU
         free_init_pages("unused kernel memory",
                         (unsigned long)(&__init_begin),
                         (unsigned long)(&__init_end));