aboutsummaryrefslogtreecommitdiff
path: root/hw/ppc/mpc8544_guts.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/ppc/mpc8544_guts.c')
-rw-r--r--hw/ppc/mpc8544_guts.c143
1 files changed, 143 insertions, 0 deletions
diff --git a/hw/ppc/mpc8544_guts.c b/hw/ppc/mpc8544_guts.c
new file mode 100644
index 0000000000..193beab2c2
--- /dev/null
+++ b/hw/ppc/mpc8544_guts.c
@@ -0,0 +1,143 @@
+/*
+ * QEMU PowerPC MPC8544 global util pseudo-device
+ *
+ * Copyright (C) 2011 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * Author: Alexander Graf, <alex@csgraf.de>
+ *
+ * This 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.
+ *
+ * *****************************************************************
+ *
+ * The documentation for this device is noted in the MPC8544 documentation,
+ * file name "MPC8544ERM.pdf". You can easily find it on the web.
+ *
+ */
+
+#include "hw/hw.h"
+#include "sysemu/sysemu.h"
+#include "hw/sysbus.h"
+
+#define MPC8544_GUTS_MMIO_SIZE 0x1000
+#define MPC8544_GUTS_RSTCR_RESET 0x02
+
+#define MPC8544_GUTS_ADDR_PORPLLSR 0x00
+#define MPC8544_GUTS_ADDR_PORBMSR 0x04
+#define MPC8544_GUTS_ADDR_PORIMPSCR 0x08
+#define MPC8544_GUTS_ADDR_PORDEVSR 0x0C
+#define MPC8544_GUTS_ADDR_PORDBGMSR 0x10
+#define MPC8544_GUTS_ADDR_PORDEVSR2 0x14
+#define MPC8544_GUTS_ADDR_GPPORCR 0x20
+#define MPC8544_GUTS_ADDR_GPIOCR 0x30
+#define MPC8544_GUTS_ADDR_GPOUTDR 0x40
+#define MPC8544_GUTS_ADDR_GPINDR 0x50
+#define MPC8544_GUTS_ADDR_PMUXCR 0x60
+#define MPC8544_GUTS_ADDR_DEVDISR 0x70
+#define MPC8544_GUTS_ADDR_POWMGTCSR 0x80
+#define MPC8544_GUTS_ADDR_MCPSUMR 0x90
+#define MPC8544_GUTS_ADDR_RSTRSCR 0x94
+#define MPC8544_GUTS_ADDR_PVR 0xA0
+#define MPC8544_GUTS_ADDR_SVR 0xA4
+#define MPC8544_GUTS_ADDR_RSTCR 0xB0
+#define MPC8544_GUTS_ADDR_IOVSELSR 0xC0
+#define MPC8544_GUTS_ADDR_DDRCSR 0xB20
+#define MPC8544_GUTS_ADDR_DDRCDR 0xB24
+#define MPC8544_GUTS_ADDR_DDRCLKDR 0xB28
+#define MPC8544_GUTS_ADDR_CLKOCR 0xE00
+#define MPC8544_GUTS_ADDR_SRDS1CR1 0xF04
+#define MPC8544_GUTS_ADDR_SRDS2CR1 0xF10
+#define MPC8544_GUTS_ADDR_SRDS2CR3 0xF18
+
+struct GutsState {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
+};
+
+typedef struct GutsState GutsState;
+
+static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ uint32_t value = 0;
+ CPUPPCState *env = cpu_single_env;
+
+ addr &= MPC8544_GUTS_MMIO_SIZE - 1;
+ switch (addr) {
+ case MPC8544_GUTS_ADDR_PVR:
+ value = env->spr[SPR_PVR];
+ break;
+ case MPC8544_GUTS_ADDR_SVR:
+ value = env->spr[SPR_E500_SVR];
+ break;
+ default:
+ fprintf(stderr, "guts: Unknown register read: %x\n", (int)addr);
+ break;
+ }
+
+ return value;
+}
+
+static void mpc8544_guts_write(void *opaque, hwaddr addr,
+ uint64_t value, unsigned size)
+{
+ addr &= MPC8544_GUTS_MMIO_SIZE - 1;
+
+ switch (addr) {
+ case MPC8544_GUTS_ADDR_RSTCR:
+ if (value & MPC8544_GUTS_RSTCR_RESET) {
+ qemu_system_reset_request();
+ }
+ break;
+ default:
+ fprintf(stderr, "guts: Unknown register write: %x = %x\n",
+ (int)addr, (unsigned)value);
+ break;
+ }
+}
+
+static const MemoryRegionOps mpc8544_guts_ops = {
+ .read = mpc8544_guts_read,
+ .write = mpc8544_guts_write,
+ .endianness = DEVICE_BIG_ENDIAN,
+ .valid = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
+};
+
+static int mpc8544_guts_initfn(SysBusDevice *dev)
+{
+ GutsState *s;
+
+ s = FROM_SYSBUS(GutsState, SYS_BUS_DEVICE(dev));
+
+ memory_region_init_io(&s->iomem, &mpc8544_guts_ops, s,
+ "mpc6544.guts", MPC8544_GUTS_MMIO_SIZE);
+ sysbus_init_mmio(dev, &s->iomem);
+
+ return 0;
+}
+
+static void mpc8544_guts_class_init(ObjectClass *klass, void *data)
+{
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = mpc8544_guts_initfn;
+}
+
+static const TypeInfo mpc8544_guts_info = {
+ .name = "mpc8544-guts",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(GutsState),
+ .class_init = mpc8544_guts_class_init,
+};
+
+static void mpc8544_guts_register_types(void)
+{
+ type_register_static(&mpc8544_guts_info);
+}
+
+type_init(mpc8544_guts_register_types)