Read Digests Service

Returns the stored digests for the device. The following table lists the returned digests format.

Table 1. Read Digest Service Request
System Service Descriptor Bit Field	Value	Description
15:7	MBOXADDR[10:2]	Mailbox address. See Table 2.
6:0	04H	Read Digest service command.

The following table lists the Read Digest Service mailbox format.

Table 2. Read Digests Service Mailbox Format
Offset	Length (bytes)	Parameter	Direction	Description
0	416 (For PolarFire^® FPGA only)	DIGESTS	Output	Digest Array
0	576 (For PolarFire SoC FPGA only)	DIGESTS	Output	Digest Array

Table 3. Returned Digests Format
Offset (byte)	Size (bytes)	Value	Description
0	32	FD	Fabric digest
32	32	CCDIGEST	Fabric configuration data digest
64	32	SNVMDIGEST	sNVM ROM pages digest
96	32	ULDIGEST	User security segment digest
128	32	UKDIGEST0	Digest of user key segment containing SRAM-PUF data
160	32	UKDIGEST1	Digest of user key segment containing KUP (User EC key)
192	32	UKDIGEST2	Digest of user key segment containing UPK1
224	32	UKDIGEST3	Digest of user key segment containing UEK1
256	32	UKDIGEST4	Digest of user key segment containing DPK
288	32	UKDIGEST5	Digest of user key segment containing UPK2
320	32	UKDIGEST6	Digest of user key segment containing UEK2
352	32	UPDIGEST	Digest of permanent lock security segments
384	32	FDIGEST	Digest of factory lock segment, factory key segment in pNVM, and System Controller ROM
416	32	UKDIGEST7	User Key digest 7 (For PolarFire^® SoC FPGA only)
448	32	ENVMDIGEST	ENVM Digest (For PolarFire SoC FPGA only)
480	32	UKDIGEST8	UKDIGEST8 for MSS Boot Information (For PolarFire SoC FPGA only)
512	32	UKDIGEST9	SNVM_RW_ACCESS_MAP Digest (For PolarFire SoC FPGA only)
544	32	UKDIGEST10	SBIC revocation digest (For PolarFire SoC FPGA only)