Owners manual

System
H3 Datasheet(Revision1.2) Copyright© 2015 Allwinner Technology Co.,Ltd.All Rights Reserved. Page 248
region size. If you program a region size to be 8GB or more, then the SMC
might ignore certain bits depending on the region size.
4.17.4.21. SMC Region Attributes Register(Default Value: 0x00000000)
Offset: 0x108+N*0x10(N=0~15)
Register Name: SMC_REGION_ATTR_REG
Bit
R/W
Default/Hex
Description
31:28
R/W
0x0
REGION_ATTR_SPN.
SP<n>. Permission setting for region <n>. if an AXI transaction occurs to
region n, the value in the sp<n> field controls whether the SMC permits the
transaction to proceed. . See Table 4-4 and Table 4-5.
27:16
/
/
/.
15:8
R/W
0x0
SUB_REGION_DISABLE.
Subregion_disable. Regions are split into eight equal-sized sub-regions, and
each bit enables the corresponding subregion to be disabled.
Bit [15] = 1 subregion 7 is disabled.
Bit [14] = 1 subregion 6 is disabled.
Bit [13] = 1 subregion 5 is disabled.
Bit [12] = 1 subregion 4 is disabled.
Bit [11] = 1 subregion 3 is disabled.
Bit [10] = 1 subregion 2 is disabled.
Bit [9] = 1 subregion 1 is disabled.
Bit [8] = 1 subregion 0 is disabled.
7
/
/
/
6:1
R/W
0x0
REGION_ATTR_SIZE.
Size<n>. Size of region<n>, see Table 3 for detail.
0
R/W
0x0
REGION_ATTR_EN.
EN<n>. Enable for region<n>.
0 = region < n> is disabled.
1 = region < n> is enabled.
Note:For region 0,this field is reserved except SPN field.
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