From: Alistair Francis <alistair.francis@wdc.com>
To: peter.maydell@linaro.org, qemu-devel@nongnu.org
Cc: Bin Meng <bmeng.cn@gmail.com>,
Alistair Francis <alistair.francis@wdc.com>
Subject: [PULL 7/7] hw/riscv: OpenTitan: Connect the mtime and mtimecmp timer
Date: Thu, 24 Jun 2021 05:02:11 -0700 [thread overview]
Message-ID: <20210624120211.85499-8-alistair.francis@wdc.com> (raw)
In-Reply-To: <20210624120211.85499-1-alistair.francis@wdc.com>
Connect the Ibex timer to the OpenTitan machine. The timer can trigger
the RISC-V MIE interrupt as well as a custom device interrupt.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-id: 5e7f4e9b4537f863bcb8db1264b840b56ef2a929.1624001156.git.alistair.francis@wdc.com
---
include/hw/riscv/opentitan.h | 5 ++++-
hw/riscv/opentitan.c | 14 +++++++++++---
2 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/include/hw/riscv/opentitan.h b/include/hw/riscv/opentitan.h
index aab9bc9245..86cceef698 100644
--- a/include/hw/riscv/opentitan.h
+++ b/include/hw/riscv/opentitan.h
@@ -22,6 +22,7 @@
#include "hw/riscv/riscv_hart.h"
#include "hw/intc/ibex_plic.h"
#include "hw/char/ibex_uart.h"
+#include "hw/timer/ibex_timer.h"
#include "qom/object.h"
#define TYPE_RISCV_IBEX_SOC "riscv.lowrisc.ibex.soc"
@@ -35,6 +36,7 @@ struct LowRISCIbexSoCState {
RISCVHartArrayState cpus;
IbexPlicState plic;
IbexUartState uart;
+ IbexTimerState timer;
MemoryRegion flash_mem;
MemoryRegion rom;
@@ -57,7 +59,7 @@ enum {
IBEX_DEV_SPI,
IBEX_DEV_I2C,
IBEX_DEV_PATTGEN,
- IBEX_DEV_RV_TIMER,
+ IBEX_DEV_TIMER,
IBEX_DEV_SENSOR_CTRL,
IBEX_DEV_OTP_CTRL,
IBEX_DEV_PWRMGR,
@@ -82,6 +84,7 @@ enum {
};
enum {
+ IBEX_TIMER_TIMEREXPIRED0_0 = 125,
IBEX_UART0_RX_PARITY_ERR_IRQ = 8,
IBEX_UART0_RX_TIMEOUT_IRQ = 7,
IBEX_UART0_RX_BREAK_ERR_IRQ = 6,
diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c
index 7545dcda9c..c5a7e3bacb 100644
--- a/hw/riscv/opentitan.c
+++ b/hw/riscv/opentitan.c
@@ -36,7 +36,7 @@ static const MemMapEntry ibex_memmap[] = {
[IBEX_DEV_SPI] = { 0x40050000, 0x1000 },
[IBEX_DEV_I2C] = { 0x40080000, 0x1000 },
[IBEX_DEV_PATTGEN] = { 0x400e0000, 0x1000 },
- [IBEX_DEV_RV_TIMER] = { 0x40100000, 0x1000 },
+ [IBEX_DEV_TIMER] = { 0x40100000, 0x1000 },
[IBEX_DEV_SENSOR_CTRL] = { 0x40110000, 0x1000 },
[IBEX_DEV_OTP_CTRL] = { 0x40130000, 0x4000 },
[IBEX_DEV_PWRMGR] = { 0x40400000, 0x1000 },
@@ -106,6 +106,8 @@ static void lowrisc_ibex_soc_init(Object *obj)
object_initialize_child(obj, "plic", &s->plic, TYPE_IBEX_PLIC);
object_initialize_child(obj, "uart", &s->uart, TYPE_IBEX_UART);
+
+ object_initialize_child(obj, "timer", &s->timer, TYPE_IBEX_TIMER);
}
static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp)
@@ -159,6 +161,14 @@ static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp)
3, qdev_get_gpio_in(DEVICE(&s->plic),
IBEX_UART0_RX_OVERFLOW_IRQ));
+ if (!sysbus_realize(SYS_BUS_DEVICE(&s->timer), errp)) {
+ return;
+ }
+ sysbus_mmio_map(SYS_BUS_DEVICE(&s->timer), 0, memmap[IBEX_DEV_TIMER].base);
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->timer),
+ 0, qdev_get_gpio_in(DEVICE(&s->plic),
+ IBEX_TIMER_TIMEREXPIRED0_0));
+
create_unimplemented_device("riscv.lowrisc.ibex.gpio",
memmap[IBEX_DEV_GPIO].base, memmap[IBEX_DEV_GPIO].size);
create_unimplemented_device("riscv.lowrisc.ibex.spi",
@@ -167,8 +177,6 @@ static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp)
memmap[IBEX_DEV_I2C].base, memmap[IBEX_DEV_I2C].size);
create_unimplemented_device("riscv.lowrisc.ibex.pattgen",
memmap[IBEX_DEV_PATTGEN].base, memmap[IBEX_DEV_PATTGEN].size);
- create_unimplemented_device("riscv.lowrisc.ibex.rv_timer",
- memmap[IBEX_DEV_RV_TIMER].base, memmap[IBEX_DEV_RV_TIMER].size);
create_unimplemented_device("riscv.lowrisc.ibex.sensor_ctrl",
memmap[IBEX_DEV_SENSOR_CTRL].base, memmap[IBEX_DEV_SENSOR_CTRL].size);
create_unimplemented_device("riscv.lowrisc.ibex.otp_ctrl",
--
2.31.1
next prev parent reply other threads:[~2021-06-24 12:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-24 12:02 [PULL 0/7] riscv-to-apply queue Alistair Francis
2021-06-24 12:02 ` [PULL 1/7] target/riscv: Use target_ulong for the DisasContext misa Alistair Francis
2021-06-24 12:02 ` [PULL 2/7] target/riscv: gdbstub: Fix dynamic CSR XML generation Alistair Francis
2021-06-24 12:02 ` [PULL 3/7] hw/char: Consistent function names for sifive_uart Alistair Francis
2021-06-24 12:02 ` [PULL 4/7] hw/char: QOMify sifive_uart Alistair Francis
2021-06-24 12:02 ` [PULL 5/7] hw/char/ibex_uart: Make the register layout private Alistair Francis
2021-06-24 12:02 ` [PULL 6/7] hw/timer: Initial commit of Ibex Timer Alistair Francis
2021-06-24 12:02 ` Alistair Francis [this message]
2021-06-25 17:55 ` [PULL 0/7] riscv-to-apply queue Peter Maydell
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