From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cedric VINCENT Date: Wed, 6 Jul 2005 10:53:23 +0200 Subject: [U-Boot-Users] Re: Why exceptions are enabled before exception vector code is copied In-Reply-To: <20050706080402.0E346353A4E@atlas.denx.de> References: <20050706080402.0E346353A4E@atlas.denx.de> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de > No exceptions are supposed to happen until then. > What do you suggest hoiw such a > situation should be handled while running from flash? There is no reason to enable them before exception vector code is copied. So exceptions should be enabled *after* exception vector code is copied. > It does not happen on other systems. The spurious "Machine Check Excpetion" is well known on Virtex/PPC. Most Xilinx FPGA boards are affected (tested on Virtex-II Pro and Virtex 4). regards, Cedric VINCENT.