Hi Emilio,
On Tue, Sep 16, 2014 at 9:22 AM, Emilio López <[email protected]> wrote:
> El 15/09/14 a las 20:13, Julian Calaby escibió:
>>
>> Hi Tim,
>>
>> On Tue, Sep 16, 2014 at 6:52 AM, Tim Tisdall <[email protected]> wrote:
>>>
>>> At http://linux-sunxi.org/U-Boot#DRAM it says "copy an existing file to a
>>> filename relevant for your device and edit the entries manually" but all
>>> of
>>> those files also say "this file is generated, don't edit it yourself".
>>> Which do I believe?
>>
>>
>> The wiki.
>>
>> As far as I'm aware, there's no tool to generate those automatically.
>> I believe that note is there for historical reasons or to discourage
>> people from messing with the values.
>
>
> `fexc` in sunxi-tools (the tool behind bin2fex/fex2bin aliases) can do it.
> Note that for it to work, the fex file needs to have valid values.
Ah, thanks for that! The only problem is that I believe, in general,
fex files don't have valid values.
> Usage: ./fexc [-vq] [-I <infmt>] [-O <outfmt>] [<input> [<output>]]
>
> infmt: fex, bin (default:fex)
> outfmt: fex, bin, uboot (default:bin)
>
> For example
>
> $ ./fexc -I fex -O uboot < ../sunxi-boards/sys_config/a10/mele_a1000.fex
> /* this file is generated, don't edit it yourself */
>
> #include <common.h>
> #include <asm/arch/dram.h>
>
> static struct dram_para dram_para = {
> .clock = 360,
> .type = 3,
> .rank_num = 1,
> .density = 2048,
> .io_width = 16,
> .bus_width = 32,
> .cas = 6,
> .zq = 123,
> .odt_en = 0,
> .size = 512,
> .tpr0 = 0x30926692,
> .tpr1 = 0x1090,
> .tpr2 = 0x1a0c8,
> .tpr3 = 0,
> .tpr4 = 0,
> .tpr5 = 0,
> .emr1 = 0,
> .emr2 = 0,
> .emr3 = 0,
> };
>
> unsigned long sunxi_dram_init(void)
> {
> return dramc_init(&dram_para);
> }
>
> Cheers,
>
> Emilio
>
>
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--
Julian Calaby
Email: [email protected]
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