[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [RFC PATCH 1/7] hw/arm/virt: Add a GPIO controller
From: |
Shannon Zhao |
Subject: |
[Qemu-devel] [RFC PATCH 1/7] hw/arm/virt: Add a GPIO controller |
Date: |
Tue, 17 Feb 2015 18:10:00 +0800 |
Add a GPIO controller in machine virt, in order to support cpu hotplug.
Here we use pl061.
Signed-off-by: Shannon Zhao <address@hidden>
---
hw/arm/virt.c | 28 ++++++++++++++++++++++++++++
1 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 8a00574..43c0260 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -75,6 +75,7 @@ enum {
VIRT_MMIO,
VIRT_RTC,
VIRT_FW_CFG,
+ VIRT_GPIO,
};
typedef struct MemMapEntry {
@@ -133,6 +134,7 @@ static const MemMapEntry a15memmap[] = {
[VIRT_UART] = { 0x09000000, 0x00001000 },
[VIRT_RTC] = { 0x09010000, 0x00001000 },
[VIRT_FW_CFG] = { 0x09020000, 0x0000000a },
+ [VIRT_GPIO] = { 0x09500000, 0x00001000 },
[VIRT_MMIO] = { 0x0a000000, 0x00000200 },
/* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
/* 0x10000000 .. 0x40000000 reserved for PCI */
@@ -142,6 +144,7 @@ static const MemMapEntry a15memmap[] = {
static const int a15irqmap[] = {
[VIRT_UART] = 1,
[VIRT_RTC] = 2,
+ [VIRT_GPIO] = 3,
[VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */
};
@@ -465,6 +468,29 @@ static void create_rtc(const VirtBoardInfo *vbi, qemu_irq
*pic)
g_free(nodename);
}
+static void create_gpio(const VirtBoardInfo *vbi, qemu_irq *pic)
+{
+ char *nodename;
+ hwaddr base = vbi->memmap[VIRT_GPIO].base;
+ hwaddr size = vbi->memmap[VIRT_GPIO].size;
+ int irq = vbi->irqmap[VIRT_GPIO];
+ const char compat[] = "arm,pl061\0arm,primecell";
+
+ sysbus_create_simple("pl061", base, pic[irq]);
+
+ nodename = g_strdup_printf("/address@hidden" PRIx64, base);
+ qemu_fdt_add_subnode(vbi->fdt, nodename);
+ qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
+ 2, base, 2, size);
+ qemu_fdt_setprop(vbi->fdt, nodename, "compatible", compat, sizeof(compat));
+ qemu_fdt_setprop_cell(vbi->fdt, nodename, "#gpio-cells", 2);
+ qemu_fdt_setprop(vbi->fdt, nodename, "gpio-controller", NULL, 0);
+ qemu_fdt_setprop_cells(vbi->fdt, nodename, "interrupts",
+ GIC_FDT_IRQ_TYPE_SPI, irq,
+ GIC_FDT_IRQ_FLAGS_LEVEL_HI);
+ g_free(nodename);
+}
+
static void create_virtio_devices(const VirtBoardInfo *vbi, qemu_irq *pic)
{
int i;
@@ -680,6 +706,8 @@ static void machvirt_init(MachineState *machine)
create_rtc(vbi, pic);
+ create_gpio(vbi, pic);
+
/* Create mmio transports, so the user can create virtio backends
* (which will be automatically plugged in to the transports). If
* no backend is created the transport will just sit harmlessly idle.
--
1.7.1
- [Qemu-devel] [RFC PATCH 0/7] hw/arm/virt: Add cpu-add way cpu hotplug support, Shannon Zhao, 2015/02/17
- [Qemu-devel] [RFC PATCH 1/7] hw/arm/virt: Add a GPIO controller,
Shannon Zhao <=
- [Qemu-devel] [RFC PATCH 2/7] hw/arm/virt-acpi-build: Add GPIO controller in ACPI DSDT table, Shannon Zhao, 2015/02/17
- [Qemu-devel] [RFC PATCH 4/7] topology: Move topology.h to an arch-independent location, Shannon Zhao, 2015/02/17
- [Qemu-devel] [RFC PATCH 3/7] hw/acpi/virt-hotplug: Add a hotplug device for machine virt, Shannon Zhao, 2015/02/17
- [Qemu-devel] [RFC PATCH 6/7] hw/arm/virt: Add cpu hotplug support, Shannon Zhao, 2015/02/17
- [Qemu-devel] [RFC PATCH 5/7] target-arm/cpu: Add apic_id property for ARMCPU, Shannon Zhao, 2015/02/17