Commit cfa32630 authored by Bin Meng's avatar Bin Meng Committed by Alistair Francis
Browse files

hw/riscv: sifive_u: Add a new property msel for MSEL pin state 



On SiFive FU540 SoC, the value stored at physical address 0x1000
stores the MSEL pin state that is used to control the next boot
location that ROM codes jump to.

Add a new property msel to sifive_u machine for this.

Signed-off-by: default avatarBin Meng <bin.meng@windriver.com>
Reviewed-by: default avatarAlistair Francis <alistair.francis@wdc.com>
Message-id: 1591625864-31494-12-git-send-email-bmeng.cn@gmail.com
Message-Id: <1591625864-31494-12-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: default avatarAlistair Francis <alistair.francis@wdc.com>
parent 3e9667cd

hw/riscv/sifive_u.c

+7 −0
Original line number Diff line number Diff line
@@ -504,6 +504,13 @@ static void sifive_u_machine_instance_init(Object *obj) 
                                    "Set on to tell QEMU's ROM to jump to "

                                    "flash. Otherwise QEMU will jump to DRAM");



    s->msel = 0;

    object_property_add(obj, "msel", "uint32",

                        sifive_u_machine_get_uint32_prop,

                        sifive_u_machine_set_uint32_prop, NULL, &s->msel);

    object_property_set_description(obj, "msel",

                                    "Mode Select (MSEL[3:0]) pin state");



    s->serial = OTP_SERIAL;

    object_property_add(obj, "serial", "uint32",

                        sifive_u_machine_get_uint32_prop,

include/hw/riscv/sifive_u.h

+1 −0
Original line number Diff line number Diff line
@@ -63,6 +63,7 @@ typedef struct SiFiveUState { 
    int fdt_size;



    bool start_in_flash;

    uint32_t msel;

    uint32_t serial;

} SiFiveUState;