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fix comments regarding ACR register

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This commit is contained in:
Markus Fröschle
2021-01-08 13:36:52 +01:00
parent 8bb679071c
commit ab430fd97b
1 changed files with 7 additions and 7 deletions
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14
sys/mmu.c
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@@ -624,19 +624,19 @@ void mmu_init(void)
/* map PCI address space */ /* map PCI address space */
/* set SRAM and MBAR access */ /* set SRAM and MBAR access */
set_acr0(ACR_W(0) | /* read and write accesses permitted */ set_acr0(ACR_W(0) | /* read and write accesses permitted */
// ACR_SP(1) | /* supervisor only access permitted */ ACR_SP(1) | /* match on all accesses */
ACR_CM(ACR_CM_CACHE_INH_PRECISE) | /* cache inhibit, precise */ ACR_CM(ACR_CM_CACHE_INH_PRECISE) | /* cache inhibit, precise */
ACR_AMM(0) | /* control region > 16 MB */ ACR_AMM(0) | /* control region > 16 MB */
ACR_S(ACR_S_SUPERVISOR_MODE) | /* match addresses in supervisor and user mode */ ACR_S(ACR_S_ALL) | /* match addresses in supervisor and user mode */
ACR_E(1) | /* enable ACR */ ACR_E(1) | /* enable ACR */
#if defined(MACHINE_FIREBEE) #if defined(MACHINE_FIREBEE)
ACR_ADMSK(0x7f) | /* cover 2GB area from 0x80000000 to 0xffffffff */ ACR_ADMSK(0x7f) | /* cover 2GB area from 0x80000000 to 0xffffffff */
// ACR_BA(PCI_MEMORY_OFFSET)); /* (equals area from 3 to 4 GB */ ACR_BA(PCI_MEMORY_OFFSET)); /* (equals area from 3 to 4 GB */
ACR_BA(0xe0000000)); // ACR_BA(0xe0000000));
#elif defined(MACHINE_M5484LITE) || defined(MACHINE_M5475EVB) #elif defined(MACHINE_M5484LITE) || defined(MACHINE_M5475EVB)
ACR_ADMSK(0x7f) | /* cover 2 GB area from 0x80000000 to 0xffffffff */ ACR_ADMSK(0x7f) | /* cover 2 GB area from 0x80000000 to 0xffffffff */
// ACR_BA(PCI_MEMORY_OFFSET)); ACR_BA(PCI_MEMORY_OFFSET));
ACR_BA(0xe0000000)); // ACR_BA(0xe0000000));
#elif defined(MACHINE_M54455) #elif defined(MACHINE_M54455)
ACR_ADMSK(0x7f) | ACR_ADMSK(0x7f) |
ACR_BA(0x80000000)); /* FIXME: not determined yet */ ACR_BA(0x80000000)); /* FIXME: not determined yet */
@@ -647,7 +647,7 @@ void mmu_init(void)
/* data access attributes for BaS in flash */ /* data access attributes for BaS in flash */
set_acr1(ACR_W(0) | set_acr1(ACR_W(0) |
ACR_SP(0) | ACR_SP(3) |
ACR_CM(0) | ACR_CM(0) |
#if defined(MACHINE_FIREBEE) #if defined(MACHINE_FIREBEE)
ACR_CM(ACR_CM_CACHEABLE_WT) | ACR_CM(ACR_CM_CACHEABLE_WT) |