From 617448a46b60c353fae0c645a024b628c1f9f700 Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Wed, 16 Dec 2020 10:22:26 -0800 Subject: [PATCH] hw/riscv: Expand the is 32-bit check to support more CPUs Currently the riscv_is_32_bit() function only supports the generic rv32 CPUs. Extend the function to support the SiFive and LowRISC CPUs as well. Signed-off-by: Alistair Francis Reviewed-by: Palmer Dabbelt Acked-by: Palmer Dabbelt Message-id: 9a13764115ba78688ba61b56526c6de65fc3ef42.1608142916.git.alistair.francis@wdc.com --- hw/riscv/boot.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c index d62f3dc758..3c70ac75d7 100644 --- a/hw/riscv/boot.c +++ b/hw/riscv/boot.c @@ -41,7 +41,17 @@ bool riscv_is_32_bit(MachineState *machine) { - if (!strncmp(machine->cpu_type, "rv32", 4)) { + /* + * To determine if the CPU is 32-bit we need to check a few different CPUs. + * + * If the CPU starts with rv32 + * If the CPU is a sifive 3 seriries CPU (E31, U34) + * If it's the Ibex CPU + */ + if (!strncmp(machine->cpu_type, "rv32", 4) || + (!strncmp(machine->cpu_type, "sifive", 6) && + machine->cpu_type[8] == '3') || + !strncmp(machine->cpu_type, "lowrisc-ibex", 12)) { return true; } else { return false; -- 2.30.2