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sifive_e: Support the revB machine

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Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Alistair Francis 2020-05-13 10:42:46 -07:00
parent 354908cee1
commit 5a842062b9
2 changed files with 31 additions and 4 deletions
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34
hw/riscv/sifive_e.c
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@ -95,10 +95,14 @@ static void riscv_sifive_e_init(MachineState *machine)
memmap[SIFIVE_E_DTIM].base, main_mem);
/* Mask ROM reset vector */
uint32_t reset_vec[2] = {
0x204002b7, /* 0x1000: lui t0,0x20400 */
0x00028067, /* 0x1004: jr t0 */
};
uint32_t reset_vec[2];
if (s->revb) {
reset_vec[0] = 0x200102b7; /* 0x1000: lui t0,0x20010 */
} else {
reset_vec[0] = 0x204002b7; /* 0x1000: lui t0,0x20400 */
}
reset_vec[1] = 0x00028067; /* 0x1004: jr t0 */
/* copy in the reset vector in little_endian byte order */
for (i = 0; i < sizeof(reset_vec) >> 2; i++) {
@ -112,8 +116,30 @@ static void riscv_sifive_e_init(MachineState *machine)
}
}
static bool sifive_e_machine_get_revb(Object *obj, Error **errp)
{
SiFiveEState *s = RISCV_E_MACHINE(obj);
return s->revb;
}
static void sifive_e_machine_set_revb(Object *obj, bool value, Error **errp)
{
SiFiveEState *s = RISCV_E_MACHINE(obj);
s->revb = value;
}
static void sifive_e_machine_instance_init(Object *obj)
{
SiFiveEState *s = RISCV_E_MACHINE(obj);
s->revb = false;
object_property_add_bool(obj, "revb", sifive_e_machine_get_revb,
sifive_e_machine_set_revb);
object_property_set_description(obj, "revb",
"Set on to tell QEMU that it should model "
"the revB HiFive1 board");
}
static void sifive_e_machine_class_init(ObjectClass *oc, void *data)

1
include/hw/riscv/sifive_e.h
View File

@ -45,6 +45,7 @@ typedef struct SiFiveEState {
/*< public >*/
SiFiveESoCState soc;
bool revb;
} SiFiveEState;
#define TYPE_RISCV_E_MACHINE MACHINE_TYPE_NAME("sifive_e")