From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pieter Date: Wed, 04 Mar 2009 07:17:34 +0200 Subject: [U-Boot] Bad CPU identification on MPC8544DS In-Reply-To: <1236107045.8988.27.camel@penguin> References: <1236107045.8988.27.camel@penguin> Message-ID: <49AE0EEE.6040700@vastech.co.za> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de jeff angielski wrote: > Despite the SVR being the same (0x803c0011), the latest u-boot is > misidentifying the CPU when compared against the original 1.3.0 u-boot. > The CPU is a 8544E but u-boot is reporting 8533E. > > The wierd part of this is that according to the Chip Errata for the > MPC8544E, the SVR *should* be 0x803c01xx - which is different than both > the 1.3 and latest git version are reading. > > Can any of the Freescale guys explain this discrepancy between the > manual, the Freescale BSP u-boot, and the latest u-boot? > > > > Using the u-boot that is built with the LTIB and ships with the > MPC8544DS board: > > > > U-Boot 1.3.0-rc3 (Mar 28 2008 - 11:13:50) > > CPU: 8544_E, Version: 1.1, (0x803c0011) > Core: E500, Version: 2.2, (0x80210022) > Clock Configuration: > CPU: 999 MHz, CCB: 399 MHz, > DDR: 199 MHz, LBC: 24 MHz > L1: D-cache 32 kB enabled > I-cache 32 kB enabled > > > > Using the latest u-boot: > > > U-Boot 2009.03-rc1-00031-gd82fd0f-dirty (Mar 03 2009 - 13:09:00) > > CPU: 8533E, Version: 1.1, (0x803c0011) > Core: E500, Version: 2.2, (0x80210022) > Clock Configuration: > CPU0:1000 MHz, > CCB:400 MHz, > DDR:200 MHz (400 MT/s data rate), LBC:25 MHz > L1: D-cache 32 kB enabled > I-cache 32 kB enabled > Board: MPC8544DS, System ID: 0x12, System Version: 0x20, FPGA Version: > 0x31 > I found that U-boot 2009 does much more detailed checking regarding the CPU IDs. But also found discrepancies in the CPU reporting while running U-boot 2009 using the BDI 2000. With the BDI2000 my CPU was detected as 8547E and with a standalone boot, U-Boot got 8548E. See if the CPU is detected incorrectly while booting stand alone. cheers pieter -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 2722 bytes Desc: S/MIME Cryptographic Signature Url : http://lists.denx.de/pipermail/u-boot/attachments/20090304/37feefa4/attachment.bin