From: Peng Fan <van.freenix@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] MMU Mapping
Date: Fri, 22 Aug 2014 09:27:33 +0800 [thread overview]
Message-ID: <53F69C85.7030801@gmail.com> (raw)
In-Reply-To: <53F5CD78.9030302@denx.de>
Hi,
On 08/21/2014 06:44 PM, Stefano Babic wrote:
> Hi Alexandre,
>
> On 21/08/2014 11:08, Alexandre Delove wrote:
>> Hello
>>
>> I am trying to disable the memory management unit on my sabreLite board, but i don't find what i should do. I also want to change the mapping of the MMU, but i don't know where it is.
>>
>
> MMU is off in U-Boot. It is turned on by kernel. Or what do you mind ?
To ARM, if not defined CONFIG_SYS_DCACHE_OFF, dcache_enable->cache_enable(CR_C)->mmu_setup will enable mmu and build section mapping. U can try #define CONFIG_SYS_DCACHE_OFF if it is an ARM SoC board. mmu related code locates at arch/arm/lib/cache-cp15.c
Regards,
Peng.
>
> Best regards,
> Stefano Babic
>
prev parent reply other threads:[~2014-08-22 1:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1147516840.12179908.1408611845402.JavaMail.zimbra@enst.fr>
2014-08-21 9:08 ` [U-Boot] MMU Mapping Alexandre Delove
2014-08-21 10:44 ` Stefano Babic
2014-08-22 1:27 ` Peng Fan [this message]
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