SPRZ436H October   2015  – July 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL

 

  1.   1
  2. 1Introduction
    1.     Related Documentation
    2.     Trademarks
    3.     Modules Impacted
  3. 2Silicon Advisories
    1.     Revisions SR 2.1, 2.0, 1.0 - Advisories List
    2.     i202
    3.     i378
    4.     i631
    5.     i694
    6.     i698
    7.     i699
    8.     i709
    9.     i727
    10.     i729
    11.     i734
    12.     i767
    13.     i782
    14.     i783
    15.     i802
    16.     i803
    17.     i807
    18.     i808
    19.     i809
    20.     i810
    21.     i813
    22.     i814
    23.     i815
    24.     i818
    25.     i819
    26.     i820
    27.     i824
    28.     i826
    29.     i829
    30.     i834
    31.     i849
    32.     i856
    33.     i862
    34.     i863
    35.     i867
    36.     i868
    37.     i869
    38.     i870
    39.     i871
    40.     i872
    41.     i874
    42.     i875
    43.     i878
    44.     i879
    45.     i880
    46.     i882
    47.     i883
    48.     i887
    49.     i889
    50.     i890
    51.     i893
    52.     i895
    53.     i896
    54.     i897
    55.     i898
    56.     i899
    57.     i900
    58.     i903
    59.     i904
    60.     i906
    61.     i907
    62.     i913
    63.     i916
    64.     i927
    65.     i928
    66.     i929
    67.     i930
    68.     i932
    69.     i933
    70.     i936
    71.     i940
    72.     i2446
  4. 3Silicon Limitations
    1.     Revisions SR 2.1, 2.0, 1.0 - Limitations List
    2.     i596
    3.     i641
    4.     i833
    5.     i838
    6.     i845
    7.     i848
    8.     i876
    9.     i877
    10.     i892
    11.     i909
    12.     i922
    13.     i925
  5. 4Silicon Cautions
    1.     Revisions SR 2.1, 2.0, 1.0 - Cautions List
    2.     i827
    3.     i832
    4.     i836
    5.     i839
    6.     i864
    7.     i885
    8.     i886
    9.     i912
    10.     i918
    11.     i920
    12.     i921
    13.     i926
    14.     i931
    15.     i934
    16.     i935
  6. 5Revision History

i871

L4_PER3 Firewall Initiator ConnID Value Left-Shift 1-Bit

CRITICALITY

Low

DESCRIPTION

The initiator ConnID value is used for configuring Firewall to setup the protection of target IPs. The Technical Reference Manual Table "L4 ConnID Definition" is correct for L4_CFG, L4_PER1, L4_PER2, and L4_WKUP. However, the L4_PER3 initiator ConnID value propagated from L3 interconnect is left-shifted by 1-bit comparing to the other L4 instances. As a result, the L4_PER3 firewall uses ConnIDx2 to determine the permission of each initiator accessing L4_PER3 targets. L4_PER3 firewall also logs error with ConnIDx2 value when violations occur.

Due to ConnID value left-shifted by 1-bit, the default Protection Group Member, defined by L4_AP_PROT_GROUP_MEMBERS_0_L register, will only enable the initiators with ConnID < 8 for L4_PER3 access since the upper 16-bits are all 0s after reset. The initiators with ConnID >= 8 won't be able access L4_PER3 targets out of reset. User has to program the protection group register to enable the access to L4_PER3 targets for those initiators.

WORKAROUND

To configure the L4_PER3 firewall protection correctly, use ConnIDx2 to program protection group and identify the initiator that caused the error. Refer to the below table for L4_PER3 ConnID values.

Table 2-2 ConnID Values
ConnID per TRM (hex)ConnID For L4_PER3 FW (decimal)CONNID_BIT_VECTOR For L4_PER3 FWInitiator(1)
00BIT 0Cortex™-A15 MPU subsystem
12BIT 2Debug subsystem
24BIT 4DSP1 subsystem (CFG, EDMA, MDMA), DSP2 (EDMA)
36BIT 6IVAHD, DSP2 (CGF, MDMA)
48BIT 8EVE1, EVE2, EVE3, EVE4
510BIT 10PRUSS1, PRUSS2
612BIT 12IPU1/2, SYSTEM_DMA
714BIT 14EDMA
816BIT 16DSS, MLB, MMU1, MMU2, PCIE1 and PCIE2
918BIT 18VIP1, VIP2, VIP3, VPE
A20BIT 20MMC1, MMC2, GPU, BB2D, GMAC
B22BIT 22USB1, USB2, USB3, USB4
C24BIT 24SATA

(1) For the list of active initiators, please refer to the specific device TRM.

REVISIONS IMPACTED

AM571x SR 2.1, 2.0, 1.0
AM570x SR 2.1, 2.0

DRA79x: 2.1, 2.0

TDA2Ex (23mm): 2.0, 1.0

TDA2Ex (17mm): 2.1, 2.0

AM571x: 2.1, 2.0, 1.0

AM570x: 2.1, 2.0

DRA72x: 2.0, 1.0

DRA71x: 2.1, 2.0