[PATCH 2/6] RISC-V: add riscv_vendor_id() support
Sascha Hauer
sha at pengutronix.de
Wed Sep 14 01:33:58 PDT 2022
On Tue, Sep 13, 2022 at 02:49:50PM +0200, Marco Felsch wrote:
> +static inline long __riscv_vendor_id(u32 flags)
> +{
> + struct sbiret ret = { .error = -1 };
> + long id;
> +
> + switch (__riscv_mode(flags)) {
> + case RISCV_M_MODE:
> + __asm__ volatile("csrr %0, mvendorid\n" : "=r"(id));
> + return id;
> + case RISCV_S_MODE:
> + /*
> + * We need to use the sbi_ecall() since it can be that we got
> + * called without a working stack
> + */
> + ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_MVENDORID,
> + 0, 0, 0, 0, 0, 0);
> + if (!ret.error)
> + return ret.value;
> + default:
> + }
arch/riscv/include/asm/system.h:27:2: error: label at end of compound statement
Sascha
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