From: Yegor Yefremov <yegorslists@googlemail.com>
To: barebox <barebox@lists.infradead.org>
Subject: am335x questions
Date: Thu, 26 May 2016 15:41:46 +0200 [thread overview]
Message-ID: <CAGm1_ktMpwYPfhz2_baRt-nX+ACArVX8ESfgjY1_NzZqurnjiA@mail.gmail.com> (raw)
I'm porting an am335x based board. We have systems either with 256MB
or 512MB RAM. Currently I'm using following code:
ENTRY_FUNCTION(start_am33xx_baltos_sdram, r0, r1, r2)
{
uint32_t sdram_size;
void *fdt;
sdram_size = SZ_256M;
fdt = __dtb_am335x_baltos_minimal_start;
fdt -= get_runtime_offset();
barebox_arm_entry(0x80000000, sdram_size, fdt);
}
This way I always have 256MB "detected" regardless of the used
hardware. Is it possible to let Barebox autodetect RAM size like it is
done in U-Boot?
Another question concerns booting medium. Whether I start from NAND or
MMC I always want to be able to boot from MMC too. Now, if I boot
Barebox from NAND I can see following in devinfo output:
`-- 48060000.mmc
`-- mmc0
How can I make system enumerate MMC partition, so that I can mount
them? "detect mmc0" doesn't help.
When booting completely from MMC, mmco will be enumerated.
Yegor
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next reply other threads:[~2016-05-26 13:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-26 13:41 Yegor Yefremov [this message]
2016-05-26 14:44 ` Sascha Hauer
2016-05-27 13:52 ` Yegor Yefremov
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