Hi Albert, I have just bisect why on the latest kernel hello world example doesn't work and I have end up in this patch too. After reverting hello world example is working.
Also I would like to know if we have still bootm support for standlone http://www.denx.de/wiki/view/DULG/UBootStandalone#Section_5.12.3. Because it is not working for me with error "ERROR: booting os 'U-Boot' (17) is not supported" and I can't see IH_OS_U_BOOT in boot_os table in cmd_bootm.c I have created image like this. ./tools/mkimage -n "hello" -A arm -O u-boot -T standalone -C none -a c100000 -d examples/standalone/hello_world.bin -v /tftpboot/hello.ub Thanks, Michal On 11/18/2013 12:26 PM, Leif Lindholm wrote: > Hi, > > Commit fe1378a - "ARM: use r9 for gd" - broke the ABI for users of the > U-Boot API on ARM. Users I am aware of are GRUB and the FreeBSD loader. > Since I only spotted this on Saturday, this code is well and truly in > the wild, so any users of the API will need to preserve both r8 and r9 > on syscalls for the foreseeable future (which is not the end of the > world). > > Sometime last year I proposed a change to make the API syscall entry > and exit points responsible for maintaining full procedure-call standard > compliance, although the patch I provided was on the hackier side of > good (and probably wrong). > > I would now like to ask in a more open-ended way - is there any chance > that we could solve this in a generic way, such that consumers of the > API need not be aware of U-Boot internal ABI changes? > > If the assumtions that the global data pointer is: > a) a pointer > b) writable > are not both safe, then this could be achieved by arch-specific asm > entry/exit points. > > / > Leif > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot > -- Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91 w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/ Maintainer of Linux kernel - Xilinx Zynq ARM architecture Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform
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