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hw/arm/mps2: Create and connect SYSCLK Clock

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Create a fixed-frequency Clock object to be the SYSCLK, and wire it
up to the devices that require it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210128114145.20536-14-peter.maydell@linaro.org
Message-id: 20210121190622.22000-14-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2021-01-28 11:41:33 +00:00
parent efc34aaa82
commit 640ec25807
1 changed files with 9 additions and 0 deletions
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9
hw/arm/mps2.c
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@ -46,6 +46,7 @@
#include "hw/net/lan9118.h"
#include "net/net.h"
#include "hw/watchdog/cmsdk-apb-watchdog.h"
#include "hw/qdev-clock.h"
#include "qom/object.h"
typedef enum MPS2FPGAType {
@ -84,6 +85,7 @@ struct MPS2MachineState {
CMSDKAPBDualTimer dualtimer;
CMSDKAPBWatchdog watchdog;
CMSDKAPBTimer timer[2];
Clock *sysclk;
};
#define TYPE_MPS2_MACHINE "mps2"
@ -140,6 +142,10 @@ static void mps2_common_init(MachineState *machine)
exit(EXIT_FAILURE);
}
/* This clock doesn't need migration because it is fixed-frequency */
mms->sysclk = clock_new(OBJECT(machine), "SYSCLK");
clock_set_hz(mms->sysclk, SYSCLK_FRQ);
/* The FPGA images have an odd combination of different RAMs,
* because in hardware they are different implementations and
* connected to different buses, giving varying performance/size
@ -341,6 +347,7 @@ static void mps2_common_init(MachineState *machine)
TYPE_CMSDK_APB_TIMER);
sbd = SYS_BUS_DEVICE(&mms->timer[i]);
qdev_prop_set_uint32(DEVICE(&mms->timer[i]), "pclk-frq", SYSCLK_FRQ);
qdev_connect_clock_in(DEVICE(&mms->timer[i]), "pclk", mms->sysclk);
sysbus_realize_and_unref(sbd, &error_fatal);
sysbus_mmio_map(sbd, 0, base);
sysbus_connect_irq(sbd, 0, qdev_get_gpio_in(armv7m, irqno));
@ -349,6 +356,7 @@ static void mps2_common_init(MachineState *machine)
object_initialize_child(OBJECT(mms), "dualtimer", &mms->dualtimer,
TYPE_CMSDK_APB_DUALTIMER);
qdev_prop_set_uint32(DEVICE(&mms->dualtimer), "pclk-frq", SYSCLK_FRQ);
qdev_connect_clock_in(DEVICE(&mms->dualtimer), "TIMCLK", mms->sysclk);
sysbus_realize(SYS_BUS_DEVICE(&mms->dualtimer), &error_fatal);
sysbus_connect_irq(SYS_BUS_DEVICE(&mms->dualtimer), 0,
qdev_get_gpio_in(armv7m, 10));
@ -356,6 +364,7 @@ static void mps2_common_init(MachineState *machine)
object_initialize_child(OBJECT(mms), "watchdog", &mms->watchdog,
TYPE_CMSDK_APB_WATCHDOG);
qdev_prop_set_uint32(DEVICE(&mms->watchdog), "wdogclk-frq", SYSCLK_FRQ);
qdev_connect_clock_in(DEVICE(&mms->watchdog), "WDOGCLK", mms->sysclk);
sysbus_realize(SYS_BUS_DEVICE(&mms->watchdog), &error_fatal);
sysbus_connect_irq(SYS_BUS_DEVICE(&mms->watchdog), 0,
qdev_get_gpio_in_named(armv7m, "NMI", 0));