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.
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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