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AR# 52012

Zynq-7000 SoC, Boot Sys - INIT_B pin does not indicate boot error status

Description

A design enhancement adds functionality in the INIT_B configuration pin.

Solution

The enhancement is for the BootROM to use the INIT_B pin to indicate when a boot error has been detected.  

The BootROM controls the logic level on the INIT_B pin indirectly by writing to the devcfg.CTRL[PCFG_PROG_B] bit.

In 7z020/45 CES devices, the INIT_B pin does not indicate a PS boot failure.

Impact:
Trivial.
Work-around:
None.
Configurations Affected:
All.
Device Revision(s) Affected:Refer to (Xilinx Answer 47916)  Zynq-7000 Design Advisory Master Answer Record
AR# 52012
Date 05/25/2018
Status Active
Type Design Advisory
Devices
  • Zynq-7000
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