1 files changed, 52 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-xlnx/microblaze_Fix_initrd_support.patch b/recipes-kernel/linux/linux-xlnx/microblaze_Fix_initrd_support.patch
new file mode 100644
index 00000000..7c4b6f76
--- /dev/null
+++ b/recipes-kernel/linux/linux-xlnx/microblaze_Fix_initrd_support.patch
@@ -0,0 +1,52 @@
+From: Michal Simek <michal.simek@xilinx.com>
+Subject: [LINUX PATCH 3/3] microblaze: Fix initrd support
+
+Initrd/ramdisk support has been never validated.
+
+Signed-off-by: Michal Simek <michal.simek@xilinx.com>
+---
+ arch/microblaze/mm/init.c | 20 ++++++--------------
+ 1 file changed, 6 insertions(+), 14 deletions(-)
+
+diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
+index 09affec..f394ad8 100644
+--- a/arch/microblaze/mm/init.c
++++ b/arch/microblaze/mm/init.c
+@@ -258,16 +258,7 @@ static void free_init_pages(char *what, unsigned long start, unsigned long end)
+ #ifdef CONFIG_BLK_DEV_INITRD
+ void free_initrd_mem(unsigned long start, unsigned long end)
+ {
+-       int pages = 0;
+-       for (; start < end; start += PAGE_SIZE) {
+-               ClearPageReserved(virt_to_page(start));
+-               init_page_count(virt_to_page(start));
+-               free_page(start);
+-               totalram_pages++;
+-               pages++;
+-       }
+-       printk(KERN_NOTICE "Freeing initrd memory: %dk freed\n",
+-                                       (int)(pages * (PAGE_SIZE / 1024)));
++       free_init_pages("initrd memory", start, end);
+ }
+ #endif
+ 
+@@ -438,10 +429,11 @@ 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 */
+-- 
+1.8.2.1
+
+