On Mon, Oct 03, 2022 at 06:07:54PM +0200, Heinrich Schuchardt wrote:
From: Alexandre Ghiti alexandre.ghiti@canonical.com
The following description is copied from the equivalent patch for the Linux Kernel proposed by Aurelien Jarno:
From version 2.38, binutils default to ISA spec version 20191213. This
means that the csr read/write (csrr*/csrw*) instructions and fence.i instruction has separated from the `I` extension, become two standalone extensions: Zicsr and Zifencei. As the kernel uses those instruction, this causes the following build failure:
arch/riscv/cpu/mtrap.S: Assembler messages: arch/riscv/cpu/mtrap.S:65: Error: unrecognized opcode `csrr a0,scause' arch/riscv/cpu/mtrap.S:66: Error: unrecognized opcode `csrr a1,sepc' arch/riscv/cpu/mtrap.S:67: Error: unrecognized opcode `csrr a2,stval' arch/riscv/cpu/mtrap.S:70: Error: unrecognized opcode `csrw sepc,a0'
Signed-off-by: Alexandre Ghiti alexandre.ghiti@canonical.com Reviewed-by: Bin Meng bmeng.cn@gmail.com Tested-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com Tested-by: Heiko Stuebner heiko@sntech.de Tested-by: Christian Stewart christian@paral.in Reviewed-by: Rick Chen rick@andestech.com
Applied to u-boot/master, thanks!