[Qemu-devel] [Bug 1806824] [NEW] SIE-200 (TrustZone) MPC: BLK_MAX returns an incorrect value

[YVT]

Public bug reported:

Version: 
$ qemu-system-arm --version
QEMU emulator version 3.0.92 (v3.1.0-rc2-31-gd522fba244)

Arm SIE-200 Technical Reference Manual describes that BLK_MAX indicates
the maximum value of "block based index register" (BLK_IDX). For
example, the value 1 would indicate that BLK_IDX can be 0 or 1.
According to my experiments, the AN505 FPGA image apparently follows
this behavior.

In the current implementation of QEMU, it appears to indicate the number
of possible values for BLK_IDX, i.e., one plus the value it's supposed
to return.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1806824

Title:
  SIE-200 (TrustZone) MPC: BLK_MAX returns an incorrect value

Status in QEMU:
  New

Bug description:
  Version: 
  $ qemu-system-arm --version
  QEMU emulator version 3.0.92 (v3.1.0-rc2-31-gd522fba244)

  Arm SIE-200 Technical Reference Manual describes that BLK_MAX
  indicates the maximum value of "block based index register" (BLK_IDX).
  For example, the value 1 would indicate that BLK_IDX can be 0 or 1.
  According to my experiments, the AN505 FPGA image apparently follows
  this behavior.

  In the current implementation of QEMU, it appears to indicate the
  number of possible values for BLK_IDX, i.e., one plus the value it's
  supposed to return.

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