Allen, > -----Original Message----- > From: Allen Martin [mailto:amar...@nvidia.com] > Sent: Wednesday, June 06, 2012 12:37 PM > To: Stephen Warren > Cc: Tom Warren; s...@chromium.org; u-boot@lists.denx.de > Subject: Re: [PATCH v2 08/10] tegra20: add u-boot.t2 target > > On Wed, Jun 06, 2012 at 09:48:23AM -0700, Stephen Warren wrote: > > On 06/05/2012 03:20 PM, Allen Martin wrote: > > > Add target for tegra20 u-boot image. This is a concatenation of > > > tegra spl and normal u-boot binaries. > > > > > diff --git a/board/nvidia/seaboard/config.mk > > > b/board/nvidia/seaboard/config.mk > > > > > +PAD_TO=0x00108000 > > > > Oh crap, does this mean that we have to start flashing the combined > > u-boot.t2 at 0x8000 (IIRC the start address of the SPL in an earlier > > patch) instead of 0x108000? That would cause all kinds of problems. If > > that is the case, can we move the SPL to the existing 0x108000, and > > bump the regular U-Boot up a bit to make space? If that isn't the > > case, could you please explain exactly how the SPL memory layout etc. > works for me? > > Thanks. > > The addresses are arbitrary, I picked 0x8000 for the SPL to preserve the > existing 0x108000 for the normal u-boot but it doesn't have to be that way. > The only requirement is that the SPL needs to know the address of the normal > u-boot at compile time because it doesn't have any smarts to look for it. > > I'll move the SPL to 0x108000 and the normal u-boot to 0x208000 if that > sounds more acceptable. The current flash tools everyone is using expect to flash U-Boot to 0x0108000 (on T20). This works with the non-SPL (current) upstream U-Boot for Tegra, and should continue to work for any new SPL Tegra U-Boot, so that people can use the same flash tools for either build.
Note that the above statement assumes we'll still be able to build either a 'normal' non-SPL build of Tegra U-Boot and a SPL build with your patchset, at least in the interim while we're testing/reviewing these major changes. Thanks, Tom > > -Allen -- nvpublic _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
