[PATCH v3 0/8] Add Sipeed Lichee Pi 4A RISC-V board support
Xi Ruoyao
xry111 at linuxfromscratch.org
Tue Jul 25 00:38:58 PDT 2023
Hi Jisheng,
On Sun, 2023-06-18 at 00:15 +0800, Jisheng Zhang wrote:
> Sipeed's Lichee Pi 4A development board uses Lichee Module 4A core
> module which is powered by T-HEAD's TH1520 SoC. Add minimal device
> tree files for the core module and the development board.
>
> Support basic uart/gpio/dmac drivers, so supports booting to a basic
> shell.
Thanks for the excellent work, but when I tried to boot Linux 6.5.0-rc3
on my Lichee Pi 4A it fails with:
## Flattened Device Tree blob at 01f00000
Booting using the fdt blob at 0x1f00000
Using Device Tree in place at 0000000001f00000, end 0000000001f050c4
Starting kernel ...
[ 0.000000] Linux version 6.5.0-rc3 (lfs at stargazer) (riscv64-lfs-linux-gnu-gcc (GCC) 13.1.0, GNU ld (GNU Binutils) 2.40) #1 SMP PREEMPT Tue Jul 25 13:38:20 CST 2023
[ 0.000000] Machine model: Sipeed Lichee Pi 4A
[ 0.000000] SBI specification v0.3 detected
[ 0.000000] SBI implementation ID=0x1 Version=0x9
[ 0.000000] SBI TIME extension detected
[ 0.000000] SBI IPI extension detected
[ 0.000000] SBI RFENCE extension detected
[ 0.000000] earlycon: uart0 at MMIO32 0x000000ffe7014000 (options '115200n8')
[ 0.000000] printk: bootconsole [uart0] enabled
[ 0.000000] efi: UEFI not found.
[ 0.000000] OF: reserved mem: 0x0000000000000000..0x000000000003ffff (256 KiB) nomap non-reusable mmode_resv0 at 0
[ 0.000000] Zone ranges:
[ 0.000000] DMA32 [mem 0x0000000000000000-0x00000000ffffffff]
[ 0.000000] Normal [mem 0x0000000100000000-0x00000001ffffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x000000000003ffff]
[ 0.000000] node 0: [mem 0x0000000000040000-0x00000001ffffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x00000001ffffffff]
[ 0.000000] SBI HSM extension detected
[ 0.000000] riscv: base ISA extensions acdfim
[ 0.000000] riscv: ELF capabilities acdfim
[ 0.000000] percpu: Embedded 17 pages/cpu s38184 r0 d31448 u69632
[ 0.000000] Kernel command line: console=ttyS0,115200 earlycon loglevel=7
[ 0.000000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 2064384
[ 0.000000] mem auto-init: stack:all(zero), heap alloc:off, heap free:off
[ 0.000000] software IO TLB: area num 4.
[ 0.000000] software IO TLB: mapped [mem 0x00000000fbfff000-0x00000000fffff000] (64MB)
[ 0.000000] Memory: 8145304K/8388608K available (4922K kernel code, 4786K rwdata, 2048K rodata, 2148K init, 393K bss, 243304K reserved, 0K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] rcu: Preemptible hierarchical RCU implementation.
[ 0.000000] rcu: RCU event tracing is enabled.
[ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=4.
[ 0.000000] Trampoline variant of Tasks RCU enabled.
[ 0.000000] Tracing variant of Tasks RCU enabled.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 100 jiffies.
[ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] riscv-intc: 64 local interrupts mapped
[ 0.000000] Oops - load access fault [#1]
[ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.5.0-rc3 #1
[ 0.000000] Hardware name: Sipeed Lichee Pi 4A (DT)
[ 0.000000] epc : __plic_toggle+0x5a/0x62
[ 0.000000] ra : __plic_init.isra.0+0x2d0/0x462
[ 0.000000] epc : ffffffff802ce8ec ra : ffffffff80618816 sp : ffffffff80e03c90
[ 0.000000] gp : ffffffff80ec5bb8 tp : ffffffff80e10d40 t0 : ffffffd900045940
[ 0.000000] t1 : 0000000000000002 t2 : ffffffd90004a10c s0 : ffffffd9fef6ed68
[ 0.000000] s1 : ffffffd900045680 a0 : ffffffc801002080 a1 : 0000000000000002
[ 0.000000] a2 : 0000000000000000 a3 : 00000000000000f4 a4 : 0000000000000001
[ 0.000000] a5 : 0000000000000000 a6 : 0000000000000b40 a7 : ffffffd900045940
[ 0.000000] s2 : ffffffd9fef6ed78 s3 : ffffffff80ef9630 s4 : 0000000000000001
[ 0.000000] s5 : ffffffd9ffff5af8 s6 : 0000000000000001 s7 : ffffffff80815d68
[ 0.000000] s8 : 0000000000000008 s9 : 0000000000000000 s10: ffffffff80815d68
[ 0.000000] s11: ffffffff80b1b1b8 t3 : ffffffff80c003d0 t4 : 0000000000000001
[ 0.000000] t5 : 0000000000000003 t6 : 0000000000000001
[ 0.000000] status: 8000000201800100 badaddr: 000000ffd8002080 cause: 0000000000000005
[ 0.000000] [<ffffffff802ce8ec>] __plic_toggle+0x5a/0x62
[ 0.000000] [<ffffffff8061ffc8>] of_irq_init+0x14a/0x248
[ 0.000000] [<ffffffff80600a7e>] start_kernel+0x40c/0x6fe
[ 0.000000] [<ffffffff806034f6>] init_IRQ+0xc6/0x100
[ 0.000000] [<ffffffff80600a7e>] start_kernel+0x40c/0x6fe
[ 0.000000] Code: 0007 c319 9123 00e7 8082 000f 0140 411c 000f 0820 (c593) fff5
[ 0.000000] ---[ end trace 0000000000000000 ]---
[ 0.000000] Kernel panic - not syncing: Fatal exception in interrupt
I guess I'm either using some unsupported configuration or making some
stupid mistakes, but I cannot find any documentation about how to
configure the mainline kernel for Lichee Pi 4A properly. Could you give
some pointers?
And this line
Memory: 8145304K/8388608K available (4922K kernel code, 4786K rwdata, 2048K rodata, 2148K init, 393K bss, 243304K reserved, 0K cma-reserved)
does not match my hardware (my board is a 16 GB DRAM variant). So in
the future we'll need multiple DTs for all the variants?
> NOTE: the thead cpu reset dt-binding and DT node are removed in v3. This
> makes secondary CPUs unable to be online. However, minimal th1520
> support is better than nothing. And the community has been working on
> and will work on the cpu reset dt-binding, for example, Conor, Guo and
> Jessica are discussing about it, I have seen valuable comments and
> inputs from them. I believe we can add back cpu reset in next
> development window.
>
> Thanks
>
> Since v2:
> - remove thead cpu-rst dt-binding doc and its DT node from th1520.dtsi
> - collect Reviewed-by and Acked-by tags
> - update uart reg size as suggested by Yixun
> - Add Guo Ren and Fu Wei as THEAD SoCs Maintainers
>
> Since v1:
> - add missing plic, clint, th1520 itself dt-bindings
> - use c900-plic
> - s/light/th1520
> - add dt-binding for T-HEAD CPU reset
> - enable ARCH_THEAD in defconfig
> - fix all dtbs_check error/warning except the CPU RESET, see above.
>
> Jisheng Zhang (8):
> dt-bindings: interrupt-controller: Add T-HEAD's TH1520 PLIC
> dt-bindings: timer: Add T-HEAD TH1520 clint
> dt-bindings: riscv: Add T-HEAD TH1520 board compatibles
> riscv: Add the T-HEAD SoC family Kconfig option
> riscv: dts: add initial T-HEAD TH1520 SoC device tree
> riscv: dts: thead: add sipeed Lichee Pi 4A board device tree
> MAINTAINERS: add entry for T-HEAD RISC-V SoC
> riscv: defconfig: enable T-HEAD SoC
>
> .../sifive,plic-1.0.0.yaml | 1 +
> .../devicetree/bindings/riscv/thead.yaml | 29 ++
> .../bindings/timer/sifive,clint.yaml | 1 +
> MAINTAINERS | 8 +
> arch/riscv/Kconfig.socs | 6 +
> arch/riscv/boot/dts/Makefile | 1 +
> arch/riscv/boot/dts/thead/Makefile | 2 +
> .../dts/thead/th1520-lichee-module-4a.dtsi | 38 ++
> .../boot/dts/thead/th1520-lichee-pi-4a.dts | 32 ++
> arch/riscv/boot/dts/thead/th1520.dtsi | 422 ++++++++++++++++++
> arch/riscv/configs/defconfig | 1 +
> 11 files changed, 541 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/riscv/thead.yaml
> create mode 100644 arch/riscv/boot/dts/thead/Makefile
> create mode 100644 arch/riscv/boot/dts/thead/th1520-lichee-module-4a.dtsi
> create mode 100644 arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts
> create mode 100644 arch/riscv/boot/dts/thead/th1520.dtsi
>
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