cezarus27/meta-nezha

Yocto Project meta layer that provides early support for a RISC-V based board called Nezha.

meta-nezha

Description

This repository is a Yocto Project meta layer that provides early support for a RISC-V based board called Nezha. It is an educational project prepared as the main part of a master's project.

How to build

To build nezha-image-minimal you should run command below:

$ SHELL=bash kas-docker build meta-nezha/kas/nezha-minimal.yml

Software BoM

Meta layers

• poky

• meta-openembedded

• meta-riscv

Key repositories

meta-nezha-bsp layer contains custom recipes for u-boot, Linux, OpenSBI and boot0. This recipes get code from fork of repos patched / created by smaeul:

• OpenSBI: d1-wip branch

• u-boot: d1-wip branch

• Linux: riscv/d1-wip branch

• boot0: mainline branch

Current status

19.11.2021

• System boots now. Kernel Panic error was caused by rng which is used to generate entropy. It cannot handle SIGSEGV signal in libc-2.33. The solution for this was to replace the rng-tools with haveged.

  

14.11.2021

• u-boot problem fixed with patch:

  meta-nezha-bsp/recipes-bsp/u-boot/files/0001-sun20i-set-CONFIG_SYS_BOOTM_LEN.patch
  

• kernel is booting to this moment:

  [   10.792295] rngd[139]: unhandled signal 11 code 0x2 at 0x0000003fc72e1378 in libc-2.33.so[3fc727e000+fd000]
  [   10.948096] CPU: 0 PID: 139 Comm: rngd Not tainted 5.14.0-rc4-nezha #1
  [   11.051283] Hardware name: Allwinner D1 NeZha (DT)
  [   11.101973] epc : 0000003fc72e1378 ra : 0000003fc72e1338 sp : 0000003fc72766a0
  [   11.185902]  gp : 0000002ab2ca3800 tp : 0000003fc72778f0 t0 : 3434bfb4d190d97e
  [  OK  ] Finished Update is Completed.
  [   11.271992]  t1 : 0000002ab2c9b63c t2 : 7241a979ec7a6232 s0 : 0000003fc0000020
  [   11.342274]  s1 : 0000003fc7381b00 a0 : 0000003fc0000000 a1 : 0000000000021000
  [   11.380126] dwmac-sun8i 4500000.ethernet eth0: PHY [stmmac-0:01] driver [RTL8211F Gigabit Ethernet] (irq=POLL)
  [   11.418634]  a2 : 0000000000000003 a3 : 0000000000004022 a4 : 0000003fc0000870
  [   11.456520] dwmac-sun8i 4500000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
  [   11.504119]  a5 : 0000003fc0000028 a6 : 0000000000000000 a7 : fffffffffffff000
  [   11.545471] dwmac-sun8i 4500000.ethernet eth0: No Safety Features support found
  [   11.578202]  s2 : 0000003fc0000000 s3 : 00000000000008c8 s4 : 0000000000000000
  [   11.652134] dwmac-sun8i 4500000.ethernet eth0: No MAC Management Counters available
  [   11.680441]  s5 : 0000000000000006 s6 : 0000003ffff6f988 s7 : 0000003fc72778f0
  [   11.732134] dwmac-sun8i 4500000.ethernet eth0: PTP not supported by HW
  [   11.742784]  s8 : 0000003fc7277150 s9 : 0000000000000001 s10: 0000003fc73a1380
  [   11.776764] dwmac-sun8i 4500000.ethernet eth0: configuring for phy/rgmii-id link mode
  [   11.792129]  s11: 0000003fc739d328 t3 : 0000003fc72e2d08 t4 : c965677f28d98c6d
  [   11.824305]  t5 : 0000000000000000 t6 : 611318ec7d54a35b
  [   11.848138] status: 0000000200004020 badaddr: 0000003fc0000028 cause: 0000000000000007
  [   11.948165] systemd[142]: unhandled signal 11 code 0x2 at 0x0000003fe938e330 in libpthread-2.33.so[3fe9387000+13000]
  [   11.959545] systemd[141]: unhandled signal 11 code 0x2 at 0x0000003fe92df378 in libc-2.33.so[3fe927c000+fd000]
  [   11.996127] CPU: 0 PID: 142 Comm: systemd Not tainted 5.14.0-rc4-nezha #1
  [   12.003474] CPU: 0 PID: 141 Comm: systemd Not tainted 5.14.0-rc4-nezha #1
  [  OK  ] Started Network Tim[   12.019165] Hardware name: Allwinner D1 NeZha (DT)
  e Synchronizatio[   12.025837] Hardware name: Allwinner D1 NeZha (DT)
  n.
  [   12.044145] epc : 0000003fe92df378 ra : 0000003fe92df338 sp : 0000003fe912f3f0
  [   12.051853] epc : 0000003fe938e330 ra : 0000003fe938e30a sp : 0000003fe892e7a0
  [   12.076148]  gp : 0000002ad1589250 tp : 0000003fe9130820 t0 : 000000000000bb87
  [   12.083846]  gp : 0000002ad1589250 tp : 0000003fe892f820 t0 : 000000000000bb87
  [   12.104131]  t1 : 0000003fe929f7bc t2 : 0000000000004389 s0 : 0000003fe4000020
  [   12.112118]  t1 : 0000003fe938ceac t2 : 0000000000004389 s0 : 0000003fe892e8e0
  [   12.132148]  s1 : 0000003fe937fb00 a0 : 0000003fe4000000 a1 : 0000000000021000
  [   12.144100]  s1 : 0000003fe892f49c a0 : 0000000000000000 a1 : 0000003fe892f770
  [   12.164144]  a2 : 0000000000000003 a3 : 0000000000004022 a4 : 0000003fe4000870
  [   12.171835]  a2 : 0000000000000000 a3 : 0000000000000008 a4 : 0000000000000000
  [   12.196146]  a5 : 0000003fe4000028 a6 : 0000000000000000 a7 : fffffffffffff000
  [   12.203889]  a5 : 0000000000000000 a6 : 0000003fe892f150 a7 : 0000000000000087
  [   12.228150]  s2 : 0000003fe4000000 s3 : 00000000000008c8 s4 : 0000000000000006
  [   12.235847]  s2 : 0000003fff9d53b6 s3 : 0000003fff9d53b7 s4 : 0000000000000000
  [   12.252130]  s5 : 0000000000000000 s6 : 0000003fff9d54f0 s7 : 0000003fe95f12b0
  [   12.259833]  s5 : 0000000000000006 s6 : 0000003fff9d54f0 s7 : 0000003fe892f820
  [   12.284151]  s8 : 0000003fe9130080 s9 : 0000000000000000 s10: 0000003fe939f380
  [   12.291879]  s8 : 0000003fe892f080 s9 : 0000000000000000 s10: 0000003fe939f380
  [   12.316110]  s11: 0000003fe939b328 t3 : 0000003fe92e0d08 t4 : 0000002adfe073a0
  [   12.323787]  s11: 0000003fe939b328 t3 : 0000003fe92ae6d4 t4 : 0000002adfe073a0
  [   12.348141]  t5 : 0000002adfde2c60 t6 : 0000000002adfe07
  [   12.353904]  t5 : 0000002adfde2c60 t6 : 0000000002adfe07
  [   12.368140] status: 0000000200004020 badaddr: 0000003fe4000028 cause: 0000000000000007
  [   12.376530] status: 0000000200004020 badaddr: 0000003fe892f49c cause: 0000000000000007
  [   12.400371] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
  [   12.408037] CPU: 0 PID: 1 Comm: systemd Not tainted 5.14.0-rc4-nezha #1
  [   12.414650] Hardware name: Allwinner D1 NeZha (DT)
  [   12.419435] Call Trace:
  [   12.421882] [<ffffffff80003df0>] walk_stackframe+0x0/0xc8
  [   12.427297] [<ffffffff805bc364>] panic+0x128/0x314
  [   12.432100] [<ffffffff8000e490>] do_exit+0x888/0x900
  [   12.437072] [<ffffffff800db5d8>] kmem_cache_free.part.0+0x1a4/0x390
  [   12.443355] [<ffffffff8000e578>] do_group_exit+0x30/0xc0
  [   12.448672] [<ffffffff80019c2c>] get_signal+0x1c4/0x838
  [   12.453903] [<ffffffff80003168>] do_notify_resume+0x78/0x418
  [   12.459568] [<ffffffff80002118>] ret_from_syscall_rejected+0x8/0xc
  [   12.465766] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]---
  

13.11.2021

All code, for now, is at the develop branch. At this moment build process passes but the image not running at the board.

• u-boot can't uncompress the fitImage:

  Error: inflate() returned -5
  gzip compressed: uncompress error -1
  

meta-nezha's Issues

Missing pthreads/pgtable patch

Hello, thanks for this repo, it makes building nezha linux systems super nice! One omission which tripped me up though is explained here https://gist.github.com/heitbaum/7427bb37e666ea6a0d40a6b5a99eff8f#gistcomment-3939970 I assume it's also similar to this patch https://github.com/chinchilla222/nezha-d1/blob/master/resource/linux/0001-riscv-pgtable.h-Fixup-_PAGE_CHG_MASK-usage.patch In order to save others from the same frustration I've been having with random kernel panics, I'm filing this issue to request that you incorporate one of these patches either in Cezarus27/linux or as a patch here in Cezarus27/meta-nezha. Thanks in advance!