Re: [U-Boot] [PATCH] powerpc: Fix device tree padding associated with ramdisk

Hi Kumar, Wolfgang

On 07/06/2011 09:16 PM, Kumar Gala wrote:

When booting with a ramdisk we bump the amount of memory reserved for the device tree by FDT_RAMDISK_OVERHEAD. However we did not increase the actual size in the device tree blob to match.

Its possible on boundary cases that we dont have enough memory according to the device tree blob and get errors like:

WARNING: could not set linux,initrd-end FDT_ERR_NOSPACE

We can easily fix this by setting the device tree size at the same time we bump the amount of memory reserved for the device tree.

Signed-off-by: Kumar Galagalak@kernel.crashing.org

arch/powerpc/lib/bootm.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/lib/bootm.c b/arch/powerpc/lib/bootm.c index e01787d..4e0cb8f 100644 --- a/arch/powerpc/lib/bootm.c +++ b/arch/powerpc/lib/bootm.c @@ -288,8 +288,10 @@ static int boot_body_linux(bootm_headers_t *images) return ret; of_size = ret;

• if (*initrd_start&&  *initrd_end)
  

• if (*initrd_start&&  *initrd_end) {
  of_size += FDT_RAMDISK_OVERHEAD;
  

• 	fdt_set_totalsize(*of_flat_tree, of_size);
  

• }
  

  /* Create a new LMB reservation */ lmb_reserve(lmb, (ulong)*of_flat_tree, of_size);

This looks good to me. Since it is in bootm.c and not in libfdt, I'll let Wolfgang pick it up unless I hear otherwise.

Acked-by: Gerald Van Baren vanbaren@cideas.com

Thanks, gvb