From mboxrd@z Thu Jan 1 00:00:00 1970 From: York Sun Date: Tue, 13 Aug 2013 10:46:03 -0700 Subject: [U-Boot] [U-Boot, 6/7, v10] NAND: TPL : introduce the TPL based on the SPL In-Reply-To: <1374738285-23184-6-git-send-email-ying.zhang@freescale.com> References: <1374738285-23184-6-git-send-email-ying.zhang@freescale.com> Message-ID: <520A70DB.9090405@freescale.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 07/25/2013 12:44 AM, ying.zhang at freescale.com wrote: > From: Ying Zhang > > Due to the nand SPL on some board(e.g. P1022DS)has a size limit, it can > not be more than 4K. So, the SPL cannot initialize the DDR with the SPD > code. This patch introduces TPL to enable a loader stub that is loaded > by the code from the SPL. It initializes the DDR with the SPD or other > operations. > > The TPL's size is sizeable, the maximum size is decided by the memory's > size that TPL runs. It initializes the DDR through SPD code, and copys > final uboot image to DDR. So there are three stage uboot images: > * spl_boot, * tpl_boot, * final uboot image > > This patch is on top of the patch: > SPL: Makefile: Build a separate autoconf.mk for SPL > > Signed-off-by: Ying Zhang > > Ying, You patch's dependency has not been applied. I am going to hold this patch until I can apply it. York