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hw/riscv: sifive_u: Correct the CLINT timebase frequency 

At present the CLINT timebase frequency is set to 10MHz on sifive_u,
but on the real hardware the timebase frequency is 1Mhz.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210706102616.1922469-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Bin Meng 2021-07-06 18:26:16 +08:00 committed by Alistair Francis
parent 6165dcb55f
commit 074ca702e6
1 changed files with 5 additions and 2 deletions
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7
hw/riscv/sifive_u.c
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@ -62,6 +62,9 @@
#include <libfdt.h>
/* CLINT timebase frequency */
#define CLINT_TIMEBASE_FREQ 1000000
static const MemMapEntry sifive_u_memmap[] = {
[SIFIVE_U_DEV_DEBUG] = { 0x0, 0x100 },
[SIFIVE_U_DEV_MROM] = { 0x1000, 0xf000 },
@ -165,7 +168,7 @@ static void create_fdt(SiFiveUState *s, const MemMapEntry *memmap,
qemu_fdt_add_subnode(fdt, "/cpus");
qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency",
SIFIVE_CLINT_TIMEBASE_FREQ);
CLINT_TIMEBASE_FREQ);
qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0);
qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1);
@ -847,7 +850,7 @@ static void sifive_u_soc_realize(DeviceState *dev, Error **errp)
sifive_clint_create(memmap[SIFIVE_U_DEV_CLINT].base,
memmap[SIFIVE_U_DEV_CLINT].size, 0, ms->smp.cpus,
SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE,
SIFIVE_CLINT_TIMEBASE_FREQ, false);
CLINT_TIMEBASE_FREQ, false);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->prci), errp)) {
return;