diff options
Diffstat (limited to 'arch/riscv/kernel/cpu.c')
| -rw-r--r-- | arch/riscv/kernel/cpu.c | 45 |
1 files changed, 3 insertions, 42 deletions
diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c index 7da3c6a93abd..40a3c442ac5f 100644 --- a/arch/riscv/kernel/cpu.c +++ b/arch/riscv/kernel/cpu.c @@ -46,51 +46,12 @@ int riscv_of_processor_hartid(struct device_node *node) #ifdef CONFIG_PROC_FS -static void print_isa(struct seq_file *f, const char *orig_isa) +static void print_isa(struct seq_file *f, const char *isa) { - static const char *ext = "mafdcsu"; - const char *isa = orig_isa; - const char *e; - - /* - * Linux doesn't support rv32e or rv128i, and we only support booting - * kernels on harts with the same ISA that the kernel is compiled for. - */ -#if defined(CONFIG_32BIT) - if (strncmp(isa, "rv32i", 5) != 0) - return; -#elif defined(CONFIG_64BIT) - if (strncmp(isa, "rv64i", 5) != 0) - return; -#endif - - /* Print the base ISA, as we already know it's legal. */ + /* Print the entire ISA as it is */ seq_puts(f, "isa\t\t: "); - seq_write(f, isa, 5); - isa += 5; - - /* - * Check the rest of the ISA string for valid extensions, printing those - * we find. RISC-V ISA strings define an order, so we only print the - * extension bits when they're in order. Hide the supervisor (S) - * extension from userspace as it's not accessible from there. - */ - for (e = ext; *e != '\0'; ++e) { - if (isa[0] == e[0]) { - if (isa[0] != 's') - seq_write(f, isa, 1); - - isa++; - } - } + seq_write(f, isa, strlen(isa)); seq_puts(f, "\n"); - - /* - * If we were given an unsupported ISA in the device tree then print - * a bit of info describing what went wrong. - */ - if (isa[0] != '\0') - pr_info("unsupported ISA \"%s\" in device tree\n", orig_isa); } static void print_mmu(struct seq_file *f, const char *mmu_type) |