* [U-Boot] MMU Mapping [not found] <1147516840.12179908.1408611845402.JavaMail.zimbra@enst.fr> @ 2014-08-21 9:08 ` Alexandre Delove 2014-08-21 10:44 ` Stefano Babic 0 siblings, 1 reply; 3+ messages in thread From: Alexandre Delove @ 2014-08-21 9:08 UTC (permalink / raw) To: u-boot 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. Do you know which file i have to edit? Sorry for my english, it's not my mother tongue. Regards Alexandre Delove ^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot] MMU Mapping 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 0 siblings, 1 reply; 3+ messages in thread From: Stefano Babic @ 2014-08-21 10:44 UTC (permalink / raw) To: u-boot 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 ? Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de ===================================================================== ^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot] MMU Mapping 2014-08-21 10:44 ` Stefano Babic @ 2014-08-22 1:27 ` Peng Fan 0 siblings, 0 replies; 3+ messages in thread From: Peng Fan @ 2014-08-22 1:27 UTC (permalink / raw) To: u-boot 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 > ^ permalink raw reply [flat|nested] 3+ messages in thread
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[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
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