On 07/30/2013 04:52 PM, Russell King - ARM Linux wrote: > On Tue, Jul 30, 2013 at 04:49:18PM -0600, Stephen Warren wrote: >> From: Stephen Warren <swar...@nvidia.com> >> >> DEBUG_UNCOMPRESS was previously disallowed for omap2plus due to >> omap2plus.S's use of .data, which is not allowed in the decompressor. >> Solve this by placing that data into .text when building the file into >> the decompressor. This relies on .text actually being writable in the >> decompressor, which it is in practice. > > Unless you decide to use ZBOOT and flash the zImage.
I knew there had to be a catch:-) I have no idea if ZBOOT is a use-case that's relevant to OMAP? On Tegra at least (the same issue applies to the other patch I just sent), that use-case is almost impossible; even if the boot ROM directly booted a kernel, the boot ROM is hard-coded to copy whatever it's booting to SDRAM first, although I suppose if that was a boot-loader it could just jump back to a ROM location. That said, NOR flash is extremely rare on Tegra. So, I don't know if we care about this issue. Is it reasonable to just say "If you use ZBOOT, don't enable DEBUG_UNCOMPRESS"? Perhaps these patches should not completely remove the !DEBUG_TEGRA_UART from config DEBUG_UNCOMPRESS, but instead say: default y if DEBUG_LL && (!DEBUG_TEGRA_UART || !ZBOOT)? -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
