| Message ID | 1401818320-7202-1-git-send-email-jason@lakedaemon.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Jason Cooper <jason@lakedaemon.net> writes: > The OpenBlocks AX3-4 has a non-DT bootloader. It also comes with 1GB of > soldered on RAM, and a DIMM slot for expansion. > > Unfortunately, atags_to_fdt() doesn't work in big-endian mode, so we see > the following failure when attempting to boot a big-endian kernel: The same will happen on kernels without the ATAG_DTB_COMPAT option enabled too, right? > 686 slab pages > 17 pages shared > 0 pages swap cached > [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name > Kernel panic - not syncing: Out of memory and no killable processes... > > CPU: 1 PID: 351 Comm: kworker/u4:0 Not tainted 3.15.0-rc8-next-20140603 #1 > [<c0215a54>] (unwind_backtrace) from [<c021160c>] (show_stack+0x10/0x14) > [<c021160c>] (show_stack) from [<c0802500>] (dump_stack+0x78/0x94) > [<c0802500>] (dump_stack) from [<c0800068>] (panic+0x90/0x21c) > [<c0800068>] (panic) from [<c02b5704>] (out_of_memory+0x320/0x340) > [<c02b5704>] (out_of_memory) from [<c02b93a0>] (__alloc_pages_nodemask+0x874/0x930) > [<c02b93a0>] (__alloc_pages_nodemask) from [<c02d446c>] (handle_mm_fault+0x744/0x96c) > [<c02d446c>] (handle_mm_fault) from [<c02cf250>] (__get_user_pages+0xd0/0x4c0) > [<c02cf250>] (__get_user_pages) from [<c02f3598>] (get_arg_page+0x54/0xbc) > [<c02f3598>] (get_arg_page) from [<c02f3878>] (copy_strings+0x278/0x29c) > [<c02f3878>] (copy_strings) from [<c02f38bc>] (copy_strings_kernel+0x20/0x28) > [<c02f38bc>] (copy_strings_kernel) from [<c02f4f1c>] (do_execve+0x3a8/0x4c8) > [<c02f4f1c>] (do_execve) from [<c025ac10>] (____call_usermodehelper+0x15c/0x194) > [<c025ac10>] (____call_usermodehelper) from [<c020e9b8>] (ret_from_fork+0x14/0x3c) > CPU0: stopping > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.15.0-rc8-next-20140603 #1 > [<c0215a54>] (unwind_backtrace) from [<c021160c>] (show_stack+0x10/0x14) > [<c021160c>] (show_stack) from [<c0802500>] (dump_stack+0x78/0x94) > [<c0802500>] (dump_stack) from [<c021429c>] (handle_IPI+0x138/0x174) > [<c021429c>] (handle_IPI) from [<c02087f0>] (armada_370_xp_handle_irq+0xb0/0xcc) > [<c02087f0>] (armada_370_xp_handle_irq) from [<c0212100>] (__irq_svc+0x40/0x50) > Exception stack(0xc0b6bf68 to 0xc0b6bfb0) > bf60: e9fad598 00000000 00f509a3 00000000 c0b6a000 c0b724c4 > bf80: c0b72458 c0b6a000 00000000 00000000 c0b66da0 c0b6a000 00000000 c0b6bfb0 > bfa0: c027bb94 c027bb24 60000313 ffffffff > [<c0212100>] (__irq_svc) from [<c027bb24>] (cpu_startup_entry+0x54/0x214) > [<c027bb24>] (cpu_startup_entry) from [<c0ac5b30>] (start_kernel+0x318/0x37c) > [<c0ac5b30>] (start_kernel) from [<00208078>] (0x208078) > ---[ end Kernel panic - not syncing: Out of memory and no killable processes... > > Fix this by setting a sane default (1 GB) in the dts file. > > Signed-off-by: Jason Cooper <jason@lakedaemon.net> Tested-by: Kevin Hilman <khilman@linaro.org> > --- > Kevin, > > Please test when you have a moment. If it works for you, feel free to apply it > directly wherever you feel it's appropriate. Yes, this works for me as I've been using the same hack to boot several BE kernels on the openblocks recently. Could you do the minor changelog update above (ATAG_COMPAT), add the Tested-by and send to arm@kernel.org so it gets tracked for arm-soc merge. Also, what do you think about backporting this for -stable? At least for v3.14+ since that's when BE started working. Kevin
Dear Kevin Hilman, On Tue, 03 Jun 2014 11:07:30 -0700, Kevin Hilman wrote: > Also, what do you think about backporting this for -stable? At least > for v3.14+ since that's when BE started working. Actually, BE started to work in v3.13+. Thomas
On Tue, Jun 3, 2014 at 11:07 AM, Kevin Hilman <khilman@linaro.org> wrote: > Jason Cooper <jason@lakedaemon.net> writes: > >> The OpenBlocks AX3-4 has a non-DT bootloader. It also comes with 1GB of >> soldered on RAM, and a DIMM slot for expansion. >> >> Unfortunately, atags_to_fdt() doesn't work in big-endian mode, so we see >> the following failure when attempting to boot a big-endian kernel: [...] >> >> Fix this by setting a sane default (1 GB) in the dts file. >> >> Signed-off-by: Jason Cooper <jason@lakedaemon.net> > > Tested-by: Kevin Hilman <khilman@linaro.org> Also FYI, I put a temporary hack into my automated boot setup to use fdtput to live-patch the openblocks DTB with 1G, and you can see that openblocks is now passing boot test for big-endian: http://lists.linaro.org/pipermail/kernel-build-reports/2014-June/003812.html Also FYI, I added mvebu_v7_defconfig + CONFIG_CPU_BIG_ENDIAN=y to the mix, so those should start showing up in subsequent boot tests also. Kevin
Dear Kevin Hilman, On Tue, 3 Jun 2014 15:15:16 -0700, Kevin Hilman wrote: > Also FYI, I put a temporary hack into my automated boot setup to use > fdtput to live-patch the openblocks DTB with 1G, and you can see that > openblocks is now passing boot test for big-endian: > > http://lists.linaro.org/pipermail/kernel-build-reports/2014-June/003812.html > > Also FYI, I added mvebu_v7_defconfig + CONFIG_CPU_BIG_ENDIAN=y to the > mix, so those should start showing up in subsequent boot tests also. Great, thanks a lot for working on adding big endian testing to your board farm. This is definitely going to be very useful! Thanks, Thomas
On Tue, Jun 03, 2014 at 11:07:30AM -0700, Kevin Hilman wrote: > Jason Cooper <jason@lakedaemon.net> writes: > > > The OpenBlocks AX3-4 has a non-DT bootloader. It also comes with 1GB of > > soldered on RAM, and a DIMM slot for expansion. > > > > Unfortunately, atags_to_fdt() doesn't work in big-endian mode, so we see > > the following failure when attempting to boot a big-endian kernel: > > The same will happen on kernels without the ATAG_DTB_COMPAT option > enabled too, right? Yes, good point. > > 686 slab pages > > 17 pages shared > > 0 pages swap cached > > [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name > > Kernel panic - not syncing: Out of memory and no killable processes... > > > > CPU: 1 PID: 351 Comm: kworker/u4:0 Not tainted 3.15.0-rc8-next-20140603 #1 > > [<c0215a54>] (unwind_backtrace) from [<c021160c>] (show_stack+0x10/0x14) > > [<c021160c>] (show_stack) from [<c0802500>] (dump_stack+0x78/0x94) > > [<c0802500>] (dump_stack) from [<c0800068>] (panic+0x90/0x21c) > > [<c0800068>] (panic) from [<c02b5704>] (out_of_memory+0x320/0x340) > > [<c02b5704>] (out_of_memory) from [<c02b93a0>] (__alloc_pages_nodemask+0x874/0x930) > > [<c02b93a0>] (__alloc_pages_nodemask) from [<c02d446c>] (handle_mm_fault+0x744/0x96c) > > [<c02d446c>] (handle_mm_fault) from [<c02cf250>] (__get_user_pages+0xd0/0x4c0) > > [<c02cf250>] (__get_user_pages) from [<c02f3598>] (get_arg_page+0x54/0xbc) > > [<c02f3598>] (get_arg_page) from [<c02f3878>] (copy_strings+0x278/0x29c) > > [<c02f3878>] (copy_strings) from [<c02f38bc>] (copy_strings_kernel+0x20/0x28) > > [<c02f38bc>] (copy_strings_kernel) from [<c02f4f1c>] (do_execve+0x3a8/0x4c8) > > [<c02f4f1c>] (do_execve) from [<c025ac10>] (____call_usermodehelper+0x15c/0x194) > > [<c025ac10>] (____call_usermodehelper) from [<c020e9b8>] (ret_from_fork+0x14/0x3c) > > CPU0: stopping > > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.15.0-rc8-next-20140603 #1 > > [<c0215a54>] (unwind_backtrace) from [<c021160c>] (show_stack+0x10/0x14) > > [<c021160c>] (show_stack) from [<c0802500>] (dump_stack+0x78/0x94) > > [<c0802500>] (dump_stack) from [<c021429c>] (handle_IPI+0x138/0x174) > > [<c021429c>] (handle_IPI) from [<c02087f0>] (armada_370_xp_handle_irq+0xb0/0xcc) > > [<c02087f0>] (armada_370_xp_handle_irq) from [<c0212100>] (__irq_svc+0x40/0x50) > > Exception stack(0xc0b6bf68 to 0xc0b6bfb0) > > bf60: e9fad598 00000000 00f509a3 00000000 c0b6a000 c0b724c4 > > bf80: c0b72458 c0b6a000 00000000 00000000 c0b66da0 c0b6a000 00000000 c0b6bfb0 > > bfa0: c027bb94 c027bb24 60000313 ffffffff > > [<c0212100>] (__irq_svc) from [<c027bb24>] (cpu_startup_entry+0x54/0x214) > > [<c027bb24>] (cpu_startup_entry) from [<c0ac5b30>] (start_kernel+0x318/0x37c) > > [<c0ac5b30>] (start_kernel) from [<00208078>] (0x208078) > > ---[ end Kernel panic - not syncing: Out of memory and no killable processes... > > > > Fix this by setting a sane default (1 GB) in the dts file. > > > > Signed-off-by: Jason Cooper <jason@lakedaemon.net> > > Tested-by: Kevin Hilman <khilman@linaro.org> Thanks! > > --- > > Kevin, > > > > Please test when you have a moment. If it works for you, feel free to apply it > > directly wherever you feel it's appropriate. > > Yes, this works for me as I've been using the same hack to boot several BE > kernels on the openblocks recently. > > Could you do the minor changelog update above (ATAG_COMPAT), add the > Tested-by and send to arm@kernel.org so it gets tracked for arm-soc > merge. Sure. > Also, what do you think about backporting this for -stable? At least > for v3.14+ since that's when BE started working. per Thomas, v3.13+ thx, Jason.
diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts index 5d42feb31049..178382ca594f 100644 --- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts +++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts @@ -25,7 +25,7 @@ memory { device_type = "memory"; - reg = <0 0x00000000 0 0xC0000000>; /* 3 GB */ + reg = <0 0x00000000 0 0x40000000>; /* 1 GB soldered on */ }; soc {
The OpenBlocks AX3-4 has a non-DT bootloader. It also comes with 1GB of soldered on RAM, and a DIMM slot for expansion. Unfortunately, atags_to_fdt() doesn't work in big-endian mode, so we see the following failure when attempting to boot a big-endian kernel: 686 slab pages 17 pages shared 0 pages swap cached [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name Kernel panic - not syncing: Out of memory and no killable processes... CPU: 1 PID: 351 Comm: kworker/u4:0 Not tainted 3.15.0-rc8-next-20140603 #1 [<c0215a54>] (unwind_backtrace) from [<c021160c>] (show_stack+0x10/0x14) [<c021160c>] (show_stack) from [<c0802500>] (dump_stack+0x78/0x94) [<c0802500>] (dump_stack) from [<c0800068>] (panic+0x90/0x21c) [<c0800068>] (panic) from [<c02b5704>] (out_of_memory+0x320/0x340) [<c02b5704>] (out_of_memory) from [<c02b93a0>] (__alloc_pages_nodemask+0x874/0x930) [<c02b93a0>] (__alloc_pages_nodemask) from [<c02d446c>] (handle_mm_fault+0x744/0x96c) [<c02d446c>] (handle_mm_fault) from [<c02cf250>] (__get_user_pages+0xd0/0x4c0) [<c02cf250>] (__get_user_pages) from [<c02f3598>] (get_arg_page+0x54/0xbc) [<c02f3598>] (get_arg_page) from [<c02f3878>] (copy_strings+0x278/0x29c) [<c02f3878>] (copy_strings) from [<c02f38bc>] (copy_strings_kernel+0x20/0x28) [<c02f38bc>] (copy_strings_kernel) from [<c02f4f1c>] (do_execve+0x3a8/0x4c8) [<c02f4f1c>] (do_execve) from [<c025ac10>] (____call_usermodehelper+0x15c/0x194) [<c025ac10>] (____call_usermodehelper) from [<c020e9b8>] (ret_from_fork+0x14/0x3c) CPU0: stopping CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.15.0-rc8-next-20140603 #1 [<c0215a54>] (unwind_backtrace) from [<c021160c>] (show_stack+0x10/0x14) [<c021160c>] (show_stack) from [<c0802500>] (dump_stack+0x78/0x94) [<c0802500>] (dump_stack) from [<c021429c>] (handle_IPI+0x138/0x174) [<c021429c>] (handle_IPI) from [<c02087f0>] (armada_370_xp_handle_irq+0xb0/0xcc) [<c02087f0>] (armada_370_xp_handle_irq) from [<c0212100>] (__irq_svc+0x40/0x50) Exception stack(0xc0b6bf68 to 0xc0b6bfb0) bf60: e9fad598 00000000 00f509a3 00000000 c0b6a000 c0b724c4 bf80: c0b72458 c0b6a000 00000000 00000000 c0b66da0 c0b6a000 00000000 c0b6bfb0 bfa0: c027bb94 c027bb24 60000313 ffffffff [<c0212100>] (__irq_svc) from [<c027bb24>] (cpu_startup_entry+0x54/0x214) [<c027bb24>] (cpu_startup_entry) from [<c0ac5b30>] (start_kernel+0x318/0x37c) [<c0ac5b30>] (start_kernel) from [<00208078>] (0x208078) ---[ end Kernel panic - not syncing: Out of memory and no killable processes... Fix this by setting a sane default (1 GB) in the dts file. Signed-off-by: Jason Cooper <jason@lakedaemon.net> --- Kevin, Please test when you have a moment. If it works for you, feel free to apply it directly wherever you feel it's appropriate. thx, Jason. arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)