On Tue, 2015-07-28 at 03:55 +0200, Marcel Ziswiler wrote: > On 27 July 2015 21:57:14 CEST, Scott Wood <scottw...@freescale.com> wrote: > > On Tue, 2015-07-21 at 00:35 +0200, Marcel Ziswiler wrote: > > > From: Marcel Ziswiler <marcel.ziswi...@toradex.com> > > > > > > Integrate cache alignment bounce buffer to workaround issues as > > follows: > > > > > > Loading file '/boot/zImage' to addr 0x01000000 with size 4499152 > > > (0x0044a6d0)... > > > ERROR: v7_dcache_inval_range - start address is not aligned - > > 0x1f7f0108 > > > ERROR: v7_dcache_inval_range - stop address is not aligned - > > 0x1f7f1108 > > > Done > > > Kernel image @ 0x1000000 [ 0x000000 - 0x44a6d0 ] > > > > > > Starting kernel ... > > > > > > undefined instruction > > > pc : [<005ff03c>] lr : [<0000800c>] > > > sp : 0144b6e8 ip : 01000188 fp : 0144a6c8 > > > r10: 00000000 r9 : 411fc090 r8 : 00000100 > > > r7 : 00000cfb r6 : 0144a6d0 r5 : 00000000 r4 : 00008000 > > > r3 : 0000000c r2 : 00000100 r1 : 00000cfb r0 : 00000000 > > > Flags: nZCv IRQs off FIQs off Mode SVC_32 > > > Resetting CPU ... > > > > > > Signed-off-by: Marcel Ziswiler <marcel.ziswi...@toradex.com> > > > --- > > > Changes in v2: > > > Migrated to using generic bounce buffer implementation as suggested > > by > > > Simon. > > > > I didn't see Simon's suggestion, but what is the general policy in > > U-Boot > > supposed to be for I/O alignment? Responsibility of the API user, or > > of the > > driver? Are there other drivers with the same problem? > > Well, well. You got us into some ruff terrain right there. Remember I have > some other alignment patches awaiting acceptance (e.g U-Boot's MTD and most > possibly other subsystems are deeply broken in that respect) but even with > those I failed booting a kernel loaded from UBIFS so I started having my > doubts whether or not this is truly possible without bouncing. At least > Tegra's MMC driver just bounces as well.
OK. With users such as UBI that are shared with kernel code, it might be difficult to enforce a caller-aligns model. -Scott _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
