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Annotation of qemu/hw/mpc8544_guts.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * QEMU PowerPC MPC8544 global util pseudo-device
        !             3:  *
        !             4:  * Copyright (C) 2011 Freescale Semiconductor, Inc. All rights reserved.
        !             5:  *
        !             6:  * Author: Alexander Graf, <[email protected]>
        !             7:  *
        !             8:  * This is free software; you can redistribute it and/or modify
        !             9:  * it under the terms of  the GNU General  Public License as published by
        !            10:  * the Free Software Foundation;  either version 2 of the  License, or
        !            11:  * (at your option) any later version.
        !            12:  *
        !            13:  * *****************************************************************
        !            14:  *
        !            15:  * The documentation for this device is noted in the MPC8544 documentation,
        !            16:  * file name "MPC8544ERM.pdf". You can easily find it on the web.
        !            17:  *
        !            18:  */
        !            19: 
        !            20: #include "hw.h"
        !            21: #include "sysemu.h"
        !            22: #include "sysbus.h"
        !            23: 
        !            24: #define MPC8544_GUTS_MMIO_SIZE        0x1000
        !            25: #define MPC8544_GUTS_RSTCR_RESET      0x02
        !            26: 
        !            27: #define MPC8544_GUTS_ADDR_PORPLLSR    0x00
        !            28: #define MPC8544_GUTS_ADDR_PORBMSR     0x04
        !            29: #define MPC8544_GUTS_ADDR_PORIMPSCR   0x08
        !            30: #define MPC8544_GUTS_ADDR_PORDEVSR    0x0C
        !            31: #define MPC8544_GUTS_ADDR_PORDBGMSR   0x10
        !            32: #define MPC8544_GUTS_ADDR_PORDEVSR2   0x14
        !            33: #define MPC8544_GUTS_ADDR_GPPORCR     0x20
        !            34: #define MPC8544_GUTS_ADDR_GPIOCR      0x30
        !            35: #define MPC8544_GUTS_ADDR_GPOUTDR     0x40
        !            36: #define MPC8544_GUTS_ADDR_GPINDR      0x50
        !            37: #define MPC8544_GUTS_ADDR_PMUXCR      0x60
        !            38: #define MPC8544_GUTS_ADDR_DEVDISR     0x70
        !            39: #define MPC8544_GUTS_ADDR_POWMGTCSR   0x80
        !            40: #define MPC8544_GUTS_ADDR_MCPSUMR     0x90
        !            41: #define MPC8544_GUTS_ADDR_RSTRSCR     0x94
        !            42: #define MPC8544_GUTS_ADDR_PVR         0xA0
        !            43: #define MPC8544_GUTS_ADDR_SVR         0xA4
        !            44: #define MPC8544_GUTS_ADDR_RSTCR       0xB0
        !            45: #define MPC8544_GUTS_ADDR_IOVSELSR    0xC0
        !            46: #define MPC8544_GUTS_ADDR_DDRCSR      0xB20
        !            47: #define MPC8544_GUTS_ADDR_DDRCDR      0xB24
        !            48: #define MPC8544_GUTS_ADDR_DDRCLKDR    0xB28
        !            49: #define MPC8544_GUTS_ADDR_CLKOCR      0xE00
        !            50: #define MPC8544_GUTS_ADDR_SRDS1CR1    0xF04
        !            51: #define MPC8544_GUTS_ADDR_SRDS2CR1    0xF10
        !            52: #define MPC8544_GUTS_ADDR_SRDS2CR3    0xF18
        !            53: 
        !            54: struct GutsState {
        !            55:     SysBusDevice busdev;
        !            56: };
        !            57: 
        !            58: typedef struct GutsState GutsState;
        !            59: 
        !            60: static uint32_t mpc8544_guts_read32(void *opaque, target_phys_addr_t addr)
        !            61: {
        !            62:     uint32_t value = 0;
        !            63:     CPUState *env = cpu_single_env;
        !            64: 
        !            65:     addr &= MPC8544_GUTS_MMIO_SIZE - 1;
        !            66:     switch (addr) {
        !            67:     case MPC8544_GUTS_ADDR_PVR:
        !            68:         value = env->spr[SPR_PVR];
        !            69:         break;
        !            70:     case MPC8544_GUTS_ADDR_SVR:
        !            71:         value = env->spr[SPR_E500_SVR];
        !            72:         break;
        !            73:     default:
        !            74:         fprintf(stderr, "guts: Unknown register read: %x\n", (int)addr);
        !            75:         break;
        !            76:     }
        !            77: 
        !            78:     return value;
        !            79: }
        !            80: 
        !            81: static CPUReadMemoryFunc * const mpc8544_guts_read[] = {
        !            82:     NULL,
        !            83:     NULL,
        !            84:     &mpc8544_guts_read32,
        !            85: };
        !            86: 
        !            87: static void mpc8544_guts_write32(void *opaque, target_phys_addr_t addr,
        !            88:                               uint32_t value)
        !            89: {
        !            90:     addr &= MPC8544_GUTS_MMIO_SIZE - 1;
        !            91: 
        !            92:     switch (addr) {
        !            93:     case MPC8544_GUTS_ADDR_RSTCR:
        !            94:         if (value & MPC8544_GUTS_RSTCR_RESET) {
        !            95:             qemu_system_reset_request();
        !            96:         }
        !            97:         break;
        !            98:     default:
        !            99:         fprintf(stderr, "guts: Unknown register write: %x = %x\n",
        !           100:                 (int)addr, value);
        !           101:         break;
        !           102:     }
        !           103: }
        !           104: 
        !           105: static CPUWriteMemoryFunc * const mpc8544_guts_write[] = {
        !           106:     NULL,
        !           107:     NULL,
        !           108:     &mpc8544_guts_write32,
        !           109: };
        !           110: 
        !           111: static int mpc8544_guts_initfn(SysBusDevice *dev)
        !           112: {
        !           113:     GutsState *s;
        !           114:     int iomem;
        !           115: 
        !           116:     s = FROM_SYSBUS(GutsState, sysbus_from_qdev(dev));
        !           117: 
        !           118:     iomem = cpu_register_io_memory(mpc8544_guts_read, mpc8544_guts_write, s,
        !           119:                                    DEVICE_BIG_ENDIAN);
        !           120:     sysbus_init_mmio(dev, MPC8544_GUTS_MMIO_SIZE, iomem);
        !           121: 
        !           122:     return 0;
        !           123: }
        !           124: 
        !           125: static SysBusDeviceInfo mpc8544_guts_info = {
        !           126:     .init         = mpc8544_guts_initfn,
        !           127:     .qdev.name    = "mpc8544-guts",
        !           128:     .qdev.size    = sizeof(GutsState),
        !           129: };
        !           130: 
        !           131: static void mpc8544_guts_register(void)
        !           132: {
        !           133:     sysbus_register_withprop(&mpc8544_guts_info);
        !           134: }
        !           135: device_init(mpc8544_guts_register);

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