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[Qemu-devel] [PULL 23/28] hw/arm/iotkit: Wire up MPC interrupt lines
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PULL 23/28] hw/arm/iotkit: Wire up MPC interrupt lines |
Date: |
Fri, 22 Jun 2018 13:57:08 +0100 |
The interrupt outputs from the MPC in the IoTKit and the expansion
MPCs in the board must be wired up to the security controller, and
also all ORed together to produce a single line to the NVIC.
Signed-off-by: Peter Maydell <address@hidden>
Reviewed-by: Alex Bennée <address@hidden>
Message-id: address@hidden
---
include/hw/arm/iotkit.h | 6 ++++
hw/arm/iotkit.c | 74 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 80 insertions(+)
diff --git a/include/hw/arm/iotkit.h b/include/hw/arm/iotkit.h
index b21cf1ab9d1..2cddde55dd1 100644
--- a/include/hw/arm/iotkit.h
+++ b/include/hw/arm/iotkit.h
@@ -42,6 +42,9 @@
* + named GPIO outputs ahb_ppcexp{0,1,2,3}_irq_enable
* + named GPIO outputs ahb_ppcexp{0,1,2,3}_irq_clear
* + named GPIO inputs ahb_ppcexp{0,1,2,3}_irq_status
+ * Controlling each of the 16 expansion MPCs which a system using the IoTKit
+ * might provide:
+ * + named GPIO inputs mpcexp_status[0..15]
*/
#ifndef IOTKIT_H
@@ -81,6 +84,8 @@ typedef struct IoTKit {
qemu_or_irq ppc_irq_orgate;
SplitIRQ sec_resp_splitter;
SplitIRQ ppc_irq_splitter[NUM_PPCS];
+ SplitIRQ mpc_irq_splitter[IOTS_NUM_EXP_MPC + IOTS_NUM_MPC];
+ qemu_or_irq mpc_irq_orgate;
UnimplementedDeviceState dualtimer;
UnimplementedDeviceState s32ktimer;
@@ -99,6 +104,7 @@ typedef struct IoTKit {
qemu_irq nsc_cfg_in;
qemu_irq irq_status_in[NUM_EXTERNAL_PPCS];
+ qemu_irq mpcexp_status_in[IOTS_NUM_EXP_MPC];
uint32_t nsccfg;
diff --git a/hw/arm/iotkit.c b/hw/arm/iotkit.c
index 160e40c7449..133d5bb34f4 100644
--- a/hw/arm/iotkit.c
+++ b/hw/arm/iotkit.c
@@ -131,6 +131,18 @@ static void iotkit_init(Object *obj)
init_sysbus_child(obj, "apb-ppc1", &s->apb_ppc1, sizeof(s->apb_ppc1),
TYPE_TZ_PPC);
init_sysbus_child(obj, "mpc", &s->mpc, sizeof(s->mpc), TYPE_TZ_MPC);
+ object_initialize(&s->mpc_irq_orgate, sizeof(s->mpc_irq_orgate),
+ TYPE_OR_IRQ);
+ object_property_add_child(obj, "mpc-irq-orgate",
+ OBJECT(&s->mpc_irq_orgate), &error_abort);
+ for (i = 0; i < ARRAY_SIZE(s->mpc_irq_splitter); i++) {
+ char *name = g_strdup_printf("mpc-irq-splitter-%d", i);
+ SplitIRQ *splitter = &s->mpc_irq_splitter[i];
+
+ object_initialize(splitter, sizeof(*splitter), TYPE_SPLIT_IRQ);
+ object_property_add_child(obj, name, OBJECT(splitter), &error_abort);
+ g_free(name);
+ }
init_sysbus_child(obj, "timer0", &s->timer0, sizeof(s->timer0),
TYPE_CMSDK_APB_TIMER);
init_sysbus_child(obj, "timer1", &s->timer1, sizeof(s->timer1),
@@ -163,6 +175,12 @@ static void iotkit_exp_irq(void *opaque, int n, int level)
qemu_set_irq(s->exp_irqs[n], level);
}
+static void iotkit_mpcexp_status(void *opaque, int n, int level)
+{
+ IoTKit *s = IOTKIT(opaque);
+ qemu_set_irq(s->mpcexp_status_in[n], level);
+}
+
static void iotkit_realize(DeviceState *dev, Error **errp)
{
IoTKit *s = IOTKIT(dev);
@@ -328,6 +346,22 @@ static void iotkit_realize(DeviceState *dev, Error **errp)
sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mpc),
0));
+ /* We must OR together lines from the MPC splitters to go to the NVIC */
+ object_property_set_int(OBJECT(&s->mpc_irq_orgate),
+ IOTS_NUM_EXP_MPC + IOTS_NUM_MPC, "num-lines",
&err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+ object_property_set_bool(OBJECT(&s->mpc_irq_orgate), true,
+ "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+ qdev_connect_gpio_out(DEVICE(&s->mpc_irq_orgate), 0,
+ qdev_get_gpio_in(DEVICE(&s->armv7m), 9));
+
/* Devices behind APB PPC0:
* 0x40000000: timer0
* 0x40001000: timer1
@@ -536,6 +570,46 @@ static void iotkit_realize(DeviceState *dev, Error **errp)
g_free(gpioname);
}
+ /* Wire up the splitters for the MPC IRQs */
+ for (i = 0; i < IOTS_NUM_EXP_MPC + IOTS_NUM_MPC; i++) {
+ SplitIRQ *splitter = &s->mpc_irq_splitter[i];
+ DeviceState *dev_splitter = DEVICE(splitter);
+
+ object_property_set_int(OBJECT(splitter), 2, "num-lines", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+ object_property_set_bool(OBJECT(splitter), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ if (i < IOTS_NUM_EXP_MPC) {
+ /* Splitter input is from GPIO input line */
+ s->mpcexp_status_in[i] = qdev_get_gpio_in(dev_splitter, 0);
+ qdev_connect_gpio_out(dev_splitter, 0,
+ qdev_get_gpio_in_named(dev_secctl,
+ "mpcexp_status", i));
+ } else {
+ /* Splitter input is from our own MPC */
+ qdev_connect_gpio_out_named(DEVICE(&s->mpc), "irq", 0,
+ qdev_get_gpio_in(dev_splitter, 0));
+ qdev_connect_gpio_out(dev_splitter, 0,
+ qdev_get_gpio_in_named(dev_secctl,
+ "mpc_status", 0));
+ }
+
+ qdev_connect_gpio_out(dev_splitter, 1,
+ qdev_get_gpio_in(DEVICE(&s->mpc_irq_orgate), i));
+ }
+ /* Create GPIO inputs which will pass the line state for our
+ * mpcexp_irq inputs to the correct splitter devices.
+ */
+ qdev_init_gpio_in_named(dev, iotkit_mpcexp_status, "mpcexp_status",
+ IOTS_NUM_EXP_MPC);
+
iotkit_forward_sec_resp_cfg(s);
system_clock_scale = NANOSECONDS_PER_SECOND / s->mainclk_frq;
--
2.17.1
- [Qemu-devel] [PULL 15/28] target-arm: Add the Cortex-R5F, (continued)
- [Qemu-devel] [PULL 15/28] target-arm: Add the Cortex-R5F, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 16/28] xlnx-zynqmp: Swap Cortex-R5 for Cortex-R5F, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 03/28] target-arm: fix a segmentation fault due to illegal memory access, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 06/28] hw/intc/arm_gicv3: Introduce redist-region-count array property, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 19/28] hw/misc/tz-mpc.c: Implement correct blocked-access behaviour, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 02/28] target/arm: Minor cleanup for ARMv6-M 32-bit instructions, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 01/28] hw/intc/arm_gicv3: fix an extra left-shift when reading IPRIORITYR, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 21/28] hw/misc/iotkit-secctl.c: Implement SECMPCINTSTATUS, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 17/28] hw/misc/tz-mpc.c: Implement the Arm TrustZone Memory Protection Controller, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 22/28] hw/arm/iotkit: Instantiate MPC, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 23/28] hw/arm/iotkit: Wire up MPC interrupt lines,
Peter Maydell <=
- [Qemu-devel] [PULL 26/28] target/arm: Strict alignment for ARMv6-M and ARMv8-M Baseline, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 27/28] vl.c: Don't zero-initialize statics for serial_hds, Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 28/28] xen: Don't use memory_region_init_ram_nomigrate() in pci_assign_dev_load_option_rom(), Peter Maydell, 2018/06/22
- [Qemu-devel] [PULL 24/28] hw/arm/mps2-tz.c: Instantiate MPCs, Peter Maydell, 2018/06/22
- Re: [Qemu-devel] [PULL 00/28] target-arm queue, Peter Maydell, 2018/06/22