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Make PCI memory space uncachable

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This commit is contained in:
David Gálvez
2014-07-10 16:46:21 +00:00
parent bf32e899d1
commit d1767a50e9
1 changed files with 2 additions and 2 deletions
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4
BaS_gcc/sys/mmu.c
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@@ -206,8 +206,8 @@ void mmu_init(void)
ACR_S(ACR_S_ALL) | /* match addresses in user and supervisor mode */ ACR_S(ACR_S_ALL) | /* match addresses in user and supervisor mode */
ACR_E(1) | /* enable ACR */ ACR_E(1) | /* enable ACR */
#if defined(MACHINE_FIREBEE) #if defined(MACHINE_FIREBEE)
ACR_ADMSK(0x3f) | /* cover 1GB area from 0xc0000000 to 0xffffffff */ ACR_ADMSK(0x7f) | /* cover 2GB area from 0x80000000 to 0xffffffff */
ACR_BA(0xc0000000)); /* (equals area from 3 to 4 GB */ ACR_BA(0x80000000)); /* (equals area from 3 to 4 GB */
#elif defined(MACHINE_M5484LITE) #elif defined(MACHINE_M5484LITE)
ACR_ADMSK(0x7f) | /* cover 2 GB area from 0x80000000 to 0xffffffff */ ACR_ADMSK(0x7f) | /* cover 2 GB area from 0x80000000 to 0xffffffff */
ACR_BA(0x80000000)); ACR_BA(0x80000000));