TLB_IVLD_ADDR Bits 31 : 12
R/W
0x0
TLB invalid address, 4KB aligned.
Operation:
1) Set the virtual address which needs to be operated in IOMMU_TLB_IVLD_ADDR_REG.
2) Set the mask of virtual address which needs to be operated in IOMMU_TLB_IVLD_ADDR_MASK_REG.
3) Write 1 to IOMMU_TLB_IVLD_ENABLE_REG[0].
4) Read IOMMU_TLB_IVLD_ENABLE_REG[0], when it is ‘0’, it indicates that invalidation behavior is finished.
Note
When performing invalidation operation, TLB/Cache operation has not affected.
After or Before invalidation starts, there is no absolute relationship between same address switch operation and Invalidation operation.
Unused Bits 11 : 0
Команда U-Boot для чтения регистра md 30f0090 1
Bit fields structure
typedef union iommu_tlb_ivld_addr_reg
{
struct
{
unsigned unused0 : 12;
unsigned tlb_ivld_addr : 20;
} b;
unsigned long w;
} IOMMU_TLB_IVLD_ADDR_REG
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