From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from www6.jnb1.host-h.net (www6b.your-server.co.za [196.22.132.6]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 4A285476A7 for ; Sat, 10 Jan 2009 00:33:17 +1100 (EST) Message-ID: <49675205.9010800@vastech.co.za> Date: Fri, 09 Jan 2009 15:32:53 +0200 From: Pieter MIME-Version: 1.0 To: Jon Loeliger , linuxppc-dev@ozlabs.org Subject: Re: Trouble moving custom MPC8548 board to U-boot 1.3 References: <49635C62.5090307@vastech.co.za> <1231260769.21398.5.camel@ld0161-tx32> In-Reply-To: <1231260769.21398.5.camel@ld0161-tx32> Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms060701060001010106020805" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a cryptographically signed message in MIME format. --------------ms060701060001010106020805 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi all, >> I have spent quite some time trying to move from U-Boot 1.2 to a newer >> version.. I am stuck at the initialization of the ram. The ram checksum >> fails and gives me a "total memory of 0". (the board has 512MB and work >> when booting uboot 1.2) >> >> can anyone pls. point me in the right direction? >> >> > This is your root cause: Unable to get the SPD information > for the DDR DIMM in slot 0 of controller 0. > > What part are you using? Does it support SPD? > Is your I2C to it hooked up correctly? > Can you dump the SPD information that is read? > Does it match the part specs? > > HTH, > jdl I have managed to read the SPD data for the dram. I also confirmed that the dram control and timing settings correspond to the settings that worked in the previous uboot. I am now able to run uboot up to the "relocate_code". The new Stack pointer is set to 0x0FF8DF58 witch is close enough to what i expected. This is however where the board hangs. (The board also hang when running the "testram"). I tried reading the data at the new stack pointer but get "SAP: read access failed" i get the same error when trying to read any address within the RAM or any address of other devices. This leads me to think that my LAW or TLB setup is incorrect. Looking at LAW setup: (based on board sbc8548) /* LAW(Local Access Window) configuration: * 0x0000_0000 0x1fff_ffff DDR 512M/Auto * 0x8000_0000 0xbfff_ffff PCI1 MEM 1G * 0xc000_0000 0xcfff_ffff PCI1 IO 16M * 0xe000_0000 0xffff_ffff LBC 512M */ struct law_entry law_table[] = { #ifndef CONFIG_SPD_EEPROM SET_LAW(CONFIG_SYS_DDR_SDRAM_BASE, LAWAR_SIZE_512M, LAWAR_TRGT_IF_DDR), #endif SET_LAW(CONFIG_SYS_PCI1_MEM_PHYS, LAWAR_SIZE_1G, LAWAR_TRGT_IF_PCI1 ), SET_LAW(CONFIG_SYS_PCI1_IO_PHYS, LAWAR_SIZE_16M, LAWAR_TRGT_IF_PCI1), SET_LAW(CONFIG_SYS_LBC_BASE, LAWAR_SIZE_512M, LAWAR_TRGT_IF_LBC) }; Since my board uses SPD_EEPROM, where does the LAW entry for DDR get initilized or should the #ifndef statement be removed? 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