diff options
Diffstat (limited to 'src/hw/ppc/mpc8544_guts.c')
| -rw-r--r-- | src/hw/ppc/mpc8544_guts.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/src/hw/ppc/mpc8544_guts.c b/src/hw/ppc/mpc8544_guts.c new file mode 100644 index 0000000..a10abe9 --- /dev/null +++ b/src/hw/ppc/mpc8544_guts.c @@ -0,0 +1,140 @@ +/* + * 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 + +#define TYPE_MPC8544_GUTS "mpc8544-guts" +#define MPC8544_GUTS(obj) OBJECT_CHECK(GutsState, (obj), TYPE_MPC8544_GUTS) + +struct GutsState { + /*< private >*/ + SysBusDevice parent_obj; + /*< public >*/ + + MemoryRegion iomem; +}; + +typedef struct GutsState GutsState; + +static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr, + unsigned size) +{ + uint32_t value = 0; + PowerPCCPU *cpu = POWERPC_CPU(current_cpu); + CPUPPCState *env = &cpu->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 void mpc8544_guts_initfn(Object *obj) +{ + SysBusDevice *d = SYS_BUS_DEVICE(obj); + GutsState *s = MPC8544_GUTS(obj); + + memory_region_init_io(&s->iomem, OBJECT(s), &mpc8544_guts_ops, s, + "mpc8544.guts", MPC8544_GUTS_MMIO_SIZE); + sysbus_init_mmio(d, &s->iomem); +} + +static const TypeInfo mpc8544_guts_info = { + .name = TYPE_MPC8544_GUTS, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(GutsState), + .instance_init = mpc8544_guts_initfn, +}; + +static void mpc8544_guts_register_types(void) +{ + type_register_static(&mpc8544_guts_info); +} + +type_init(mpc8544_guts_register_types) |
