warmram_crc

         Length of region in On-chip RAM for CRC validation.
Reset only on a cold reset.

Module Instance	Base Address	Register Address
`i_sys_mgr_rom`	`0xFFD06200`	`0xFFD06228 - 0xFFD06244`

Offset: 0x28

Access: RW

Bit Fields
31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
`expected` `RW 0x0`
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
`expected` `RW 0x0`

warmram_crc Fields

Bit	Name	Description	Access	Reset
31:0	`expected`	Contains the expected CRC of the region in the On-chip RAM.The Boot ROM code calculates the actual CRC for all bytes in the region specified by the DATA START an LENGTH registers. The contents of the EXECUTION register (after it has been read and modified by the Boot ROM code) is also included in the CRC calculation. The contents of the EXECUTION register is added to the CRC accumulator a byte at a time starting with the least significant byte. If the actual CRC doesn't match the expected CRC value in this register, the Boot ROM won't boot from the On-chip RAM. The CRC is a standard CRC32 with the polynomial: x^32 + x^26 + x^23 + x^22 + x^16 + x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1 There is no reflection of the bits and the initial value of the remainder is 0xFFFFFFFF and the final value is exclusive ORed with 0xFFFFFFFF.	`RW`	`0x0`

Bit

Name

Description

Access

Reset

31:0

expected

Contains the expected CRC of the region in the On-chip RAM.The Boot ROM code calculates the actual CRC for all bytes in the region specified by the DATA START an LENGTH registers. The contents of the EXECUTION register (after it has been read and modified by the Boot ROM code) is also included in the CRC calculation. The contents of the EXECUTION register is added to the CRC accumulator a byte at a time starting with the least significant byte. If the actual CRC doesn't match the expected CRC value in this register, the Boot ROM won't boot from the On-chip RAM.
The CRC is a standard CRC32 with the polynomial:
x^32 + x^26 + x^23 + x^22 + x^16 + x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1
There is no reflection of the bits and the initial value of the remainder is 0xFFFFFFFF and the final value is exclusive ORed with 0xFFFFFFFF.

RW

0x0