Intel Agilex Series Configuration User Manual page 177

5. Remote System Update (RSU)
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Each 32-byte sub-partition descriptor contains the following information:
Table 48. Sub-partition Descriptor Layout
Offset Size
16
0x00
8
0x10
4
0x18
4
0x1C
Two flags are currently defined:
• System set to 1: Reserved for RSU system. For partition offset value, refer to
• Read only set to 1: The system protects partition against direct writes.
The Intel Quartus Programming File Generator sets these flags as follows at image creation time, then they are not changed
afterward:
Table 49. Flags Specifying Contents and Access
Partition
BOOT_INFO
FACTORY_IMAGE
SPT0
SPT1
CPB0
CPB1
P1
P2
Note: In order to successfully update SPTs, the HPS software (U-Boot or Linux) must be configured to have a QSPI erase granularity
of 32 KB or less. When configured with a coarser erase granularity (like 64 KB for example), the operation fails. All supported
flash devices offer erase granularities of 4 KB, 32 KB, and 64 KB, and the default for the current HPS software is 4 KB.
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Sub-partition name, including a null string terminator
Sub-partition start offset
Sub-partition length
Sub-partition flags
Description
Table 46
System
1
1
1
1
1
1
0
0
on page 175.
Read Only
1
1
0
0
0
0
0
0
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