aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Makefile.target1
-rw-r--r--hw/realview.c83
-rw-r--r--hw/versatile_i2c.c105
3 files changed, 108 insertions, 81 deletions
diff --git a/Makefile.target b/Makefile.target
index 84951a09ec..b6a9330b90 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -364,6 +364,7 @@ endif
obj-arm-y = integratorcp.o versatilepb.o arm_pic.o arm_timer.o
obj-arm-y += arm_boot.o pl011.o pl031.o pl050.o pl080.o pl110.o pl181.o pl190.o
obj-arm-y += versatile_pci.o
+obj-arm-y += versatile_i2c.o
obj-arm-y += cadence_uart.o
obj-arm-y += cadence_ttc.o
obj-arm-y += cadence_gem.o
diff --git a/hw/realview.c b/hw/realview.c
index cf55204c96..ecf470179a 100644
--- a/hw/realview.c
+++ b/hw/realview.c
@@ -15,91 +15,13 @@
#include "net.h"
#include "sysemu.h"
#include "boards.h"
-#include "bitbang_i2c.h"
+#include "i2c.h"
#include "blockdev.h"
#include "exec-memory.h"
#define SMP_BOOT_ADDR 0xe0000000
#define SMP_BOOTREG_ADDR 0x10000030
-typedef struct {
- SysBusDevice busdev;
- MemoryRegion iomem;
- bitbang_i2c_interface *bitbang;
- int out;
- int in;
-} RealViewI2CState;
-
-static uint64_t realview_i2c_read(void *opaque, target_phys_addr_t offset,
- unsigned size)
-{
- RealViewI2CState *s = (RealViewI2CState *)opaque;
-
- if (offset == 0) {
- return (s->out & 1) | (s->in << 1);
- } else {
- hw_error("realview_i2c_read: Bad offset 0x%x\n", (int)offset);
- return -1;
- }
-}
-
-static void realview_i2c_write(void *opaque, target_phys_addr_t offset,
- uint64_t value, unsigned size)
-{
- RealViewI2CState *s = (RealViewI2CState *)opaque;
-
- switch (offset) {
- case 0:
- s->out |= value & 3;
- break;
- case 4:
- s->out &= ~value;
- break;
- default:
- hw_error("realview_i2c_write: Bad offset 0x%x\n", (int)offset);
- }
- bitbang_i2c_set(s->bitbang, BITBANG_I2C_SCL, (s->out & 1) != 0);
- s->in = bitbang_i2c_set(s->bitbang, BITBANG_I2C_SDA, (s->out & 2) != 0);
-}
-
-static const MemoryRegionOps realview_i2c_ops = {
- .read = realview_i2c_read,
- .write = realview_i2c_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static int realview_i2c_init(SysBusDevice *dev)
-{
- RealViewI2CState *s = FROM_SYSBUS(RealViewI2CState, dev);
- i2c_bus *bus;
-
- bus = i2c_init_bus(&dev->qdev, "i2c");
- s->bitbang = bitbang_i2c_init(bus);
- memory_region_init_io(&s->iomem, &realview_i2c_ops, s,
- "realview-i2c", 0x1000);
- sysbus_init_mmio(dev, &s->iomem);
- return 0;
-}
-
-static void realview_i2c_class_init(ObjectClass *klass, void *data)
-{
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
-
- k->init = realview_i2c_init;
-}
-
-static TypeInfo realview_i2c_info = {
- .name = "realview_i2c",
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(RealViewI2CState),
- .class_init = realview_i2c_class_init,
-};
-
-static void realview_register_types(void)
-{
- type_register_static(&realview_i2c_info);
-}
-
/* Board init. */
static struct arm_boot_info realview_binfo = {
@@ -328,7 +250,7 @@ static void realview_init(ram_addr_t ram_size,
}
}
- dev = sysbus_create_simple("realview_i2c", 0x10002000, NULL);
+ dev = sysbus_create_simple("versatile_i2c", 0x10002000, NULL);
i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
i2c_create_slave(i2c, "ds1338", 0x68);
@@ -492,4 +414,3 @@ static void realview_machine_init(void)
}
machine_init(realview_machine_init);
-type_init(realview_register_types)
diff --git a/hw/versatile_i2c.c b/hw/versatile_i2c.c
new file mode 100644
index 0000000000..88f530aefc
--- /dev/null
+++ b/hw/versatile_i2c.c
@@ -0,0 +1,105 @@
+/*
+ * ARM Versatile I2C controller
+ *
+ * Copyright (c) 2006-2007 CodeSourcery.
+ * Copyright (c) 2012 Oskar Andero <oskar.andero@gmail.com>
+ *
+ * This file is derived from hw/realview.c by Paul Brook
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "sysbus.h"
+#include "bitbang_i2c.h"
+
+typedef struct {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
+ bitbang_i2c_interface *bitbang;
+ int out;
+ int in;
+} VersatileI2CState;
+
+static uint64_t versatile_i2c_read(void *opaque, target_phys_addr_t offset,
+ unsigned size)
+{
+ VersatileI2CState *s = (VersatileI2CState *)opaque;
+
+ if (offset == 0) {
+ return (s->out & 1) | (s->in << 1);
+ } else {
+ hw_error("%s: Bad offset 0x%x\n", __func__, (int)offset);
+ return -1;
+ }
+}
+
+static void versatile_i2c_write(void *opaque, target_phys_addr_t offset,
+ uint64_t value, unsigned size)
+{
+ VersatileI2CState *s = (VersatileI2CState *)opaque;
+
+ switch (offset) {
+ case 0:
+ s->out |= value & 3;
+ break;
+ case 4:
+ s->out &= ~value;
+ break;
+ default:
+ hw_error("%s: Bad offset 0x%x\n", __func__, (int)offset);
+ }
+ bitbang_i2c_set(s->bitbang, BITBANG_I2C_SCL, (s->out & 1) != 0);
+ s->in = bitbang_i2c_set(s->bitbang, BITBANG_I2C_SDA, (s->out & 2) != 0);
+}
+
+static const MemoryRegionOps versatile_i2c_ops = {
+ .read = versatile_i2c_read,
+ .write = versatile_i2c_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static int versatile_i2c_init(SysBusDevice *dev)
+{
+ VersatileI2CState *s = FROM_SYSBUS(VersatileI2CState, dev);
+ i2c_bus *bus;
+
+ bus = i2c_init_bus(&dev->qdev, "i2c");
+ s->bitbang = bitbang_i2c_init(bus);
+ memory_region_init_io(&s->iomem, &versatile_i2c_ops, s,
+ "versatile_i2c", 0x1000);
+ sysbus_init_mmio(dev, &s->iomem);
+ return 0;
+}
+
+static void versatile_i2c_class_init(ObjectClass *klass, void *data)
+{
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = versatile_i2c_init;
+}
+
+static const TypeInfo versatile_i2c_info = {
+ .name = "versatile_i2c",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(VersatileI2CState),
+ .class_init = versatile_i2c_class_init,
+};
+
+static void versatile_i2c_register_types(void)
+{
+ type_register_static(&versatile_i2c_info);
+}
+
+type_init(versatile_i2c_register_types)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-04 07:32:07 +0000