[LEDE-DEV] cavium: Ignore MEM boot param when too small

[John Crispin]

On 08/06/2016 15:49, Michał Osowiecki wrote:
> Cisco RV0XX u-boot sets MEM=2048 as boot param. We assume that at least
> 4MB (mem_alloc_size) of ram is needed to run linux on cavium boards, so
> if mem < 4M - ignore it and set default value
> 
> 
> Signed-off-by: Michał Osowiecki <michal.osowiecki at gmail.com>
> 

Hi Michał,

how much memory does the board have ? maybe they just forgot the "<< 20"
part ?

	John

> --- a/arch/mips/cavium-octeon/setup.c   2016-06-06 18:15:32.000000000 +0200
> +++ b/arch/mips/cavium-octeon/setup.c   2016-06-08 15:28:56.642919151 +0200
> @@ -941,6 +941,11 @@
>          * to consistently work.
>          */
>         mem_alloc_size = 4 << 20;
> +
> +       /* Ignore bootarg MEM <= 4MB */
> +       if (MAX_MEMORY <= mem_alloc_size)
> +               MAX_MEMORY = 512ull << 20;
> +
>         if (mem_alloc_size > MAX_MEMORY)
>                 mem_alloc_size = MAX_MEMORY;
> 
> 
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