On Thu, 2023-07-27 at 08:54 +0800, Xi Ruoyao wrote: > On Thu, 2023-07-27 at 08:14 +0800, Xi Ruoyao wrote: > > On Wed, 2023-07-26 at 23:00 +0800, Jisheng Zhang wrote: > > > which dts r u using? see below. > > > > > > > > > > > Or maybe my toolchain (GCC 13.1.0, Binutils-2.40, with no patches) can > > > > miscompile the kernel? > > > > /* snip */ > > > > > > Boot HART ID : 0 > > > > Boot HART Domain : root > > > > Boot HART Priv Version : v1.11 > > > > Boot HART Base ISA : rv64imafdcvx > > > > > > what? I don't think the mainline dts provide v and x. > > > > I copied the compiled arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dtb > > into /boot and loaded it with u-boot "load" command onto 0x46000000, and > > passed this address to the booti command. > > > > But maybe I've copied the wrong file or made some other mistake... I'll > > recheck. > > Hmm, and if I read OpenSBI code correctly, this line reflects the > content of the misa CSR, not the DT riscv,isa value. > > The log of successful boot provided by Drew also contains > "rv64imafdcvx": > > https://gist.github.com/pdp7/23259595a7570f1f11086d286e16dfb6 I tried a __show_reg call before the panic: [ 0.012953] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.5.0-rc3 #7 [ 0.012967] Hardware name: Sipeed Lichee Pi 4A (DT) [ 0.012976] epc : ffffffff80c84a60 ra : 0000000000000000 sp : ffffffff8004dfee [ 0.012988] gp : 0000000200000120 tp : ffffffff80c03d20 t0 : ffffffff80002d6c [ 0.012997] t1 : ffffffff8004dfee t2 : ffffffff8004dfe6 s0 : ffffffff80c03d20 [ 0.013005] s1 : ffffffff80c966f0 a0 : ffffffff80c98140 a1 : 2000000000000000 [ 0.013012] a2 : 0000000000000043 a3 : 203a656c6f736e6f a4 : ffffffff80c03def [ 0.013021] a5 : ffffffff80dcb4a0 a6 : 0000000000000001 a7 : 0000000000000014 [ 0.013030] s2 : 000000000000000a s3 : 0000000000000000 s4 : 0000000000000000 [ 0.013036] s5 : ffffffd9fef69740 s6 : 0000000000000008 s7 : 0000000000000032 [ 0.013046] s8 : 0000000000000002 s9 : ffffffff80c03df0 s10: ffffffff80dcb4e8 [ 0.013056] s11: ffffffff80dc7c80 t3 : ffffffff80c03d48 t4 : ffffffff80dcb2f0 [ 0.013064] t5 : ffffffff80c84a60 t6 : ffffffff80c10b98 [ 0.013071] status: 0000000000000000 badaddr: 0000000000000001 cause: ffffffff80dcb4f7 [ 0.013082] Kernel panic - not syncing: unexpected interrupt cause I compared these with System.map and the result seems completely erratic (for example, sp is out of init_stack, and gp is not __global_pointer$).
