microblaze: Fix initrd support

Initrd/ramdisk support has been never validated.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 4ec137d13ad793cf9dd36521225547f41d8a21d9..b38ae3acfeb45adbe98f95c05c9c52e42721a215 100644 (file)
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -404,10 +404,11 @@ asmlinkage void __init mmu_init(void)
 
 #if defined(CONFIG_BLK_DEV_INITRD)
        /* Remove the init RAM disk from the available memory. */
-/*     if (initrd_start) {
-               mem_pieces_remove(&phys_avail, __pa(initrd_start),
-                                 initrd_end - initrd_start, 1);
-       }*/
+       if (initrd_start) {
+               unsigned long size;
+               size = initrd_end - initrd_start;
+               memblock_reserve(virt_to_phys(initrd_start), size);
+       }
 #endif /* CONFIG_BLK_DEV_INITRD */
 
        /* Initialize the MMU hardware */