[U-Boot] [PATCH] Ensure gd->ram_size end stays on 4k page boundary when 'hiding' RAM
Ira W. Snyder
iws at ovro.caltech.edu
Fri Oct 15 17:29:03 CEST 2010
On Fri, Oct 15, 2010 at 03:51:48PM +0100, Gray Remlin wrote:
> Signed-off-by: Gray Remlin <g_remlin at 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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