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[PATCH] hw/riscv: sifive_u: Correct the CLINT timebase frequency
From: |
Bin Meng |
Subject: |
[PATCH] hw/riscv: sifive_u: Correct the CLINT timebase frequency |
Date: |
Tue, 6 Jul 2021 18:26:16 +0800 |
From: Bin Meng <bin.meng@windriver.com>
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>
---
hw/riscv/sifive_u.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index 273c86418c..e75ca38783 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -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;
--
2.25.1
- [PATCH] hw/riscv: sifive_u: Correct the CLINT timebase frequency,
Bin Meng <=