Re: [U-Boot] [PATCH] Ensure gd->ram_size end stays on 4k page boundary when 'hiding' RAM

On Fri, Oct 15, 2010 at 03:51:48PM +0100, Gray Remlin wrote:

Signed-off-by: Gray Remlin g_remlin@rocketmail.com

arch/arm/lib/board.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/arm/lib/board.c b/arch/arm/lib/board.c index 22bd2c9..c1b21f5 100644 --- a/arch/arm/lib/board.c +++ b/arch/arm/lib/board.c @@ -531,8 +531,9 @@ void board_init_f (ulong bootflag) * arch/powerpc with bootwrapper support, that recalculate the * memory size from the SDRAM controller setup will have to * get fixed.

•    * Ensure gd->ram_size end is still on a 4k page boundary.
     */
  

•   gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
  

•   gd->ram_size -= ((CONFIG_SYS_MEM_TOP_HIDE + 0xFFF) & ~(0xFFF));
  

#endif

How about this easier to read version: gd->ram_size -= roundup(CONFIG_SYS_MEM_TOP_HIDE, 4096);

Ira

    addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;

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