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[Qemu-devel] [Bug 1572329] Re: ARM bootloader does not set r0 to 0

From: T. Huth
Subject: [Qemu-devel] [Bug 1572329] Re: ARM bootloader does not set r0 to 0
Date: Thu, 23 Jun 2016 19:14:30 -0000

Should be part of QEMU 2.6 ==> Fix released

** Changed in: qemu
       Status: Fix Committed => Fix Released

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  ARM bootloader does not set r0 to 0

Status in QEMU:
  Fix Released

Bug description:
  The link register is not properly set up in the ARM bootloader code,
  leading to the instruction which sets r0 to 0x00000000 to be skipped.

  As a consequence, r0 may hold the value leaked from the board setup

  For instance, if using arm_write_secure_board_setup_dummy_smc, r0
  holds 0x00000031.

  Attached is a patch to fix the issue.

  Please include Sylvain Garrigues <address@hidden> in the
  commit log.

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