From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfgang Denk Date: Wed, 19 May 2010 23:59:29 +0200 Subject: [U-Boot] [PATCH 0/1] Fix hang trying to protect flash sectors In-Reply-To: <4BF4FC5E020000B80001201A@gwia.alliedtelesyn.co.nz> References: <1274160395-9308-1-git-send-email-mark.tomlinson@alliedtelesis.co.nz> <201005181020.55735.sr@denx.de> <4BF39D0B020000B800011FD3@gwia.alliedtelesyn.co.nz> <201005191144.16691.sr@denx.de> <4BF4FC5E020000B80001201A@gwia.alliedtelesyn.co.nz> Message-ID: <20100519215929.2CC0CE5C89E@gemini.denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Dear "mark tomlinson", Please restrict your line length to some 70 characters or so, and stop posting HTML! In message <4BF4FC5E020000B80001201A@gwia.alliedtelesyn.co.nz> you wrote: > > Sorry, no. The flash chips are 0xf8000000-0xf9ffffff (32MB). (Actually we > have twice this area reserved for 64MB flash in the future). The flash > chip from 0xf8000000 is also mirrored at 0xfff00000 at boot time. I do > n't know if you consider this a hardware bug to not have all the flash at > the very top of memory, but that is the way our product has been desig > ned. Here's a memory map of the high memory area: It's not a hardware bug, but a configuration error. > f8000000-fbffffff 64M Flash > fe000000-fe0fffff 1M Battery-backed RAM > ff000000-ff00ffff 64K On-board logic > ff700000-ff7fffff 1M CCSR > fff00000-ffffffff 1M Flash (mirror of f8000000). This makes no sense. Fix your memory map, and map the flash (all of it) to the end of the address space. > So we have CONFIG_SYS_FLASH_BASE pointing to the entire Flash, and CONFIG > _SYS_MONITOR_BASE pointing to the mirrored section which contains u-boot. As I mentioned above: misconigured. > NOTICE: This message contains privileged and confidential > information intended only for the use of the addressee ... And please stop posting these silly disclaimers. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de Insufficient facts always invite danger. -- Spock, "Space Seed", stardate 3141.9