[qemu.git] / hw / arm_sysctl.c

/*
 * Status and system control registers for ARM RealView/Versatile boards.
 *
 * Copyright (c) 2006-2007 CodeSourcery.
 * Written by Paul Brook
 *
 * This code is licensed under the GPL.
 */

#include "hw.h"
#include "qemu-timer.h"
#include "sysbus.h"
#include "primecell.h"
#include "sysemu.h"

#define LOCK_VALUE 0xa05f

typedef struct {
    SysBusDevice busdev;
    uint32_t sys_id;
    uint32_t leds;
    uint16_t lockval;
    uint32_t cfgdata1;
    uint32_t cfgdata2;
    uint32_t flags;
    uint32_t nvflags;
    uint32_t resetlevel;
    uint32_t proc_id;
    uint32_t sys_mci;
    uint32_t sys_cfgdata;
    uint32_t sys_cfgctrl;
    uint32_t sys_cfgstat;
} arm_sysctl_state;

static const VMStateDescription vmstate_arm_sysctl = {
    .name = "realview_sysctl",
    .version_id = 2,
    .minimum_version_id = 1,
    .fields = (VMStateField[]) {
        VMSTATE_UINT32(leds, arm_sysctl_state),
        VMSTATE_UINT16(lockval, arm_sysctl_state),
        VMSTATE_UINT32(cfgdata1, arm_sysctl_state),
        VMSTATE_UINT32(cfgdata2, arm_sysctl_state),
        VMSTATE_UINT32(flags, arm_sysctl_state),
        VMSTATE_UINT32(nvflags, arm_sysctl_state),
        VMSTATE_UINT32(resetlevel, arm_sysctl_state),
        VMSTATE_UINT32_V(sys_mci, arm_sysctl_state, 2),
        VMSTATE_UINT32_V(sys_cfgdata, arm_sysctl_state, 2),
        VMSTATE_UINT32_V(sys_cfgctrl, arm_sysctl_state, 2),
        VMSTATE_UINT32_V(sys_cfgstat, arm_sysctl_state, 2),
        VMSTATE_END_OF_LIST()
    }
};

/* The PB926 actually uses a different format for
 * its SYS_ID register. Fortunately the bits which are
 * board type on later boards are distinct.
 */
#define BOARD_ID_PB926 0x100
#define BOARD_ID_EB 0x140
#define BOARD_ID_PBA8 0x178
#define BOARD_ID_PBX 0x182
#define BOARD_ID_VEXPRESS 0x190

static int board_id(arm_sysctl_state *s)
{
    /* Extract the board ID field from the SYS_ID register value */
    return (s->sys_id >> 16) & 0xfff;
}

static void arm_sysctl_reset(DeviceState *d)
{
    arm_sysctl_state *s = FROM_SYSBUS(arm_sysctl_state, sysbus_from_qdev(d));

    s->leds = 0;
    s->lockval = 0;
    s->cfgdata1 = 0;
    s->cfgdata2 = 0;
    s->flags = 0;
    s->resetlevel = 0;
}

static uint32_t arm_sysctl_read(void *opaque, target_phys_addr_t offset)
{
    arm_sysctl_state *s = (arm_sysctl_state *)opaque;

    switch (offset) {
    case 0x00: /* ID */
        return s->sys_id;
    case 0x04: /* SW */
        /* General purpose hardware switches.
           We don't have a useful way of exposing these to the user.  */
        return 0;
    case 0x08: /* LED */
        return s->leds;
    case 0x20: /* LOCK */
        return s->lockval;
    case 0x0c: /* OSC0 */
    case 0x10: /* OSC1 */
    case 0x14: /* OSC2 */
    case 0x18: /* OSC3 */
    case 0x1c: /* OSC4 */
    case 0x24: /* 100HZ */
        /* ??? Implement these.  */
        return 0;
    case 0x28: /* CFGDATA1 */
        return s->cfgdata1;
    case 0x2c: /* CFGDATA2 */
        return s->cfgdata2;
    case 0x30: /* FLAGS */
        return s->flags;
    case 0x38: /* NVFLAGS */
        return s->nvflags;
    case 0x40: /* RESETCTL */
        if (board_id(s) == BOARD_ID_VEXPRESS) {
            /* reserved: RAZ/WI */
            return 0;
        }
        return s->resetlevel;
    case 0x44: /* PCICTL */
        return 1;
    case 0x48: /* MCI */
        return s->sys_mci;
    case 0x4c: /* FLASH */
        return 0;
    case 0x50: /* CLCD */
        return 0x1000;
    case 0x54: /* CLCDSER */
        return 0;
    case 0x58: /* BOOTCS */
        return 0;
    case 0x5c: /* 24MHz */
        return muldiv64(qemu_get_clock_ns(vm_clock), 24000000, get_ticks_per_sec());
    case 0x60: /* MISC */
        return 0;
    case 0x84: /* PROCID0 */
        return s->proc_id;
    case 0x88: /* PROCID1 */
        return 0xff000000;
    case 0x64: /* DMAPSR0 */
    case 0x68: /* DMAPSR1 */
    case 0x6c: /* DMAPSR2 */
    case 0x70: /* IOSEL */
    case 0x74: /* PLDCTL */
    case 0x80: /* BUSID */
    case 0x8c: /* OSCRESET0 */
    case 0x90: /* OSCRESET1 */
    case 0x94: /* OSCRESET2 */
    case 0x98: /* OSCRESET3 */
    case 0x9c: /* OSCRESET4 */
    case 0xc0: /* SYS_TEST_OSC0 */
    case 0xc4: /* SYS_TEST_OSC1 */
    case 0xc8: /* SYS_TEST_OSC2 */
    case 0xcc: /* SYS_TEST_OSC3 */
    case 0xd0: /* SYS_TEST_OSC4 */
        return 0;
    case 0xa0: /* SYS_CFGDATA */
        if (board_id(s) != BOARD_ID_VEXPRESS) {
            goto bad_reg;
        }
        return s->sys_cfgdata;
    case 0xa4: /* SYS_CFGCTRL */
        if (board_id(s) != BOARD_ID_VEXPRESS) {
            goto bad_reg;
        }
        return s->sys_cfgctrl;
    case 0xa8: /* SYS_CFGSTAT */
        if (board_id(s) != BOARD_ID_VEXPRESS) {
            goto bad_reg;
        }
        return s->sys_cfgstat;
    default:
    bad_reg:
        printf ("arm_sysctl_read: Bad register offset 0x%x\n", (int)offset);
        return 0;
    }
}

static void arm_sysctl_write(void *opaque, target_phys_addr_t offset,
                          uint32_t val)
{
    arm_sysctl_state *s = (arm_sysctl_state *)opaque;

    switch (offset) {
    case 0x08: /* LED */
        s->leds = val;
    case 0x0c: /* OSC0 */
    case 0x10: /* OSC1 */
    case 0x14: /* OSC2 */
    case 0x18: /* OSC3 */
    case 0x1c: /* OSC4 */
        /* ??? */
        break;
    case 0x20: /* LOCK */
        if (val == LOCK_VALUE)
            s->lockval = val;
        else
            s->lockval = val & 0x7fff;
        break;
    case 0x28: /* CFGDATA1 */
        /* ??? Need to implement this.  */
        s->cfgdata1 = val;
        break;
    case 0x2c: /* CFGDATA2 */
        /* ??? Need to implement this.  */
        s->cfgdata2 = val;
        break;
    case 0x30: /* FLAGSSET */
        s->flags |= val;
        break;
    case 0x34: /* FLAGSCLR */
        s->flags &= ~val;
        break;
    case 0x38: /* NVFLAGSSET */
        s->nvflags |= val;
        break;
    case 0x3c: /* NVFLAGSCLR */
        s->nvflags &= ~val;
        break;
    case 0x40: /* RESETCTL */
        if (board_id(s) == BOARD_ID_VEXPRESS) {
            /* reserved: RAZ/WI */
            break;
        }
        if (s->lockval == LOCK_VALUE) {
            s->resetlevel = val;
            if (val & 0x100)
                qemu_system_reset_request ();
        }
        break;
    case 0x44: /* PCICTL */
        /* nothing to do.  */
        break;
    case 0x4c: /* FLASH */
    case 0x50: /* CLCD */
    case 0x54: /* CLCDSER */
    case 0x64: /* DMAPSR0 */
    case 0x68: /* DMAPSR1 */
    case 0x6c: /* DMAPSR2 */
    case 0x70: /* IOSEL */
    case 0x74: /* PLDCTL */
    case 0x80: /* BUSID */
    case 0x84: /* PROCID0 */
    case 0x88: /* PROCID1 */
    case 0x8c: /* OSCRESET0 */
    case 0x90: /* OSCRESET1 */
    case 0x94: /* OSCRESET2 */
    case 0x98: /* OSCRESET3 */
    case 0x9c: /* OSCRESET4 */
        break;
    case 0xa0: /* SYS_CFGDATA */
        if (board_id(s) != BOARD_ID_VEXPRESS) {
            goto bad_reg;
        }
        s->sys_cfgdata = val;
        return;
    case 0xa4: /* SYS_CFGCTRL */
        if (board_id(s) != BOARD_ID_VEXPRESS) {
            goto bad_reg;
        }
        s->sys_cfgctrl = val & ~(3 << 18);
        s->sys_cfgstat = 1;            /* complete */
        switch (s->sys_cfgctrl) {
        case 0xc0800000:            /* SYS_CFG_SHUTDOWN to motherboard */
            qemu_system_shutdown_request();
            break;
        case 0xc0900000:            /* SYS_CFG_REBOOT to motherboard */
            qemu_system_reset_request();
            break;
        default:
            s->sys_cfgstat |= 2;        /* error */
        }
        return;
    case 0xa8: /* SYS_CFGSTAT */
        if (board_id(s) != BOARD_ID_VEXPRESS) {
            goto bad_reg;
        }
        s->sys_cfgstat = val & 3;
        return;
    default:
    bad_reg:
        printf ("arm_sysctl_write: Bad register offset 0x%x\n", (int)offset);
        return;
    }
}

static CPUReadMemoryFunc * const arm_sysctl_readfn[] = {
   arm_sysctl_read,
   arm_sysctl_read,
   arm_sysctl_read
};

static CPUWriteMemoryFunc * const arm_sysctl_writefn[] = {
   arm_sysctl_write,
   arm_sysctl_write,
   arm_sysctl_write
};

static void arm_sysctl_gpio_set(void *opaque, int line, int level)
{
    arm_sysctl_state *s = (arm_sysctl_state *)opaque;
    switch (line) {
    case ARM_SYSCTL_GPIO_MMC_WPROT:
    {
        /* For PB926 and EB write-protect is bit 2 of SYS_MCI;
         * for all later boards it is bit 1.
         */
        int bit = 2;
        if ((board_id(s) == BOARD_ID_PB926) || (board_id(s) == BOARD_ID_EB)) {
            bit = 4;
        }
        s->sys_mci &= ~bit;
        if (level) {
            s->sys_mci |= bit;
        }
        break;
    }
    case ARM_SYSCTL_GPIO_MMC_CARDIN:
        s->sys_mci &= ~1;
        if (level) {
            s->sys_mci |= 1;
        }
        break;
    }
}

static int arm_sysctl_init1(SysBusDevice *dev)
{
    arm_sysctl_state *s = FROM_SYSBUS(arm_sysctl_state, dev);
    int iomemtype;

    iomemtype = cpu_register_io_memory(arm_sysctl_readfn,
                                       arm_sysctl_writefn, s,
                                       DEVICE_NATIVE_ENDIAN);
    sysbus_init_mmio(dev, 0x1000, iomemtype);
    qdev_init_gpio_in(&s->busdev.qdev, arm_sysctl_gpio_set, 2);
    /* ??? Save/restore.  */
    return 0;
}

/* Legacy helper function.  */
void arm_sysctl_init(uint32_t base, uint32_t sys_id, uint32_t proc_id)
{
    DeviceState *dev;

    dev = qdev_create(NULL, "realview_sysctl");
    qdev_prop_set_uint32(dev, "sys_id", sys_id);
    qdev_init_nofail(dev);
    qdev_prop_set_uint32(dev, "proc_id", proc_id);
    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
}

static SysBusDeviceInfo arm_sysctl_info = {
    .init = arm_sysctl_init1,
    .qdev.name  = "realview_sysctl",
    .qdev.size  = sizeof(arm_sysctl_state),
    .qdev.vmsd = &vmstate_arm_sysctl,
    .qdev.reset = arm_sysctl_reset,
    .qdev.props = (Property[]) {
        DEFINE_PROP_UINT32("sys_id", arm_sysctl_state, sys_id, 0),
        DEFINE_PROP_UINT32("proc_id", arm_sysctl_state, proc_id, 0),
        DEFINE_PROP_END_OF_LIST(),
    }
};

static void arm_sysctl_register_devices(void)
{
    sysbus_register_withprop(&arm_sysctl_info);
}

device_init(arm_sysctl_register_devices)
Commit	Line	Data
5fafdf24	1	/*
e69954b9 PB	2	* Status and system control registers for ARM RealView/Versatile boards.
e69954b9 PB	3	*
9ee6e8bb	4	* Copyright (c) 2006-2007 CodeSourcery.
e69954b9 PB	5	* Written by Paul Brook
e69954b9 PB	6	*
8e31bf38	7	* This code is licensed under the GPL.
e69954b9 PB	8	*/
e69954b9 PB	9
042eb37a DJ	10	#include "hw.h"
042eb37a DJ	11	#include "qemu-timer.h"
82634c2d	12	#include "sysbus.h"
9596ebb7	13	#include "primecell.h"
87ecb68b	14	#include "sysemu.h"
e69954b9 PB	15
	16	#define LOCK_VALUE 0xa05f
	17
	18	typedef struct {
82634c2d	19	SysBusDevice busdev;
e69954b9 PB	20	uint32_t sys_id;
	21	uint32_t leds;
	22	uint16_t lockval;
	23	uint32_t cfgdata1;
	24	uint32_t cfgdata2;
	25	uint32_t flags;
	26	uint32_t nvflags;
	27	uint32_t resetlevel;
26e92f65	28	uint32_t proc_id;
b50ff6f5	29	uint32_t sys_mci;
34933c8c PM	30	uint32_t sys_cfgdata;
	31	uint32_t sys_cfgctrl;
	32	uint32_t sys_cfgstat;
e69954b9 PB	33	} arm_sysctl_state;
e69954b9 PB	34
b5ad0ae7 PM	35	static const VMStateDescription vmstate_arm_sysctl = {
b5ad0ae7 PM	36	.name = "realview_sysctl",
34933c8c	37	.version_id = 2,
b5ad0ae7 PM	38	.minimum_version_id = 1,
	39	.fields = (VMStateField[]) {
	40	VMSTATE_UINT32(leds, arm_sysctl_state),
	41	VMSTATE_UINT16(lockval, arm_sysctl_state),
	42	VMSTATE_UINT32(cfgdata1, arm_sysctl_state),
	43	VMSTATE_UINT32(cfgdata2, arm_sysctl_state),
	44	VMSTATE_UINT32(flags, arm_sysctl_state),
	45	VMSTATE_UINT32(nvflags, arm_sysctl_state),
	46	VMSTATE_UINT32(resetlevel, arm_sysctl_state),
34933c8c PM	47	VMSTATE_UINT32_V(sys_mci, arm_sysctl_state, 2),
	48	VMSTATE_UINT32_V(sys_cfgdata, arm_sysctl_state, 2),
	49	VMSTATE_UINT32_V(sys_cfgctrl, arm_sysctl_state, 2),
	50	VMSTATE_UINT32_V(sys_cfgstat, arm_sysctl_state, 2),
b5ad0ae7 PM	51	VMSTATE_END_OF_LIST()
	52	}
	53	};
	54
b50ff6f5 PM	55	/* The PB926 actually uses a different format for
	56	* its SYS_ID register. Fortunately the bits which are
	57	* board type on later boards are distinct.
	58	*/
	59	#define BOARD_ID_PB926 0x100
	60	#define BOARD_ID_EB 0x140
	61	#define BOARD_ID_PBA8 0x178
	62	#define BOARD_ID_PBX 0x182
34933c8c	63	#define BOARD_ID_VEXPRESS 0x190
b50ff6f5 PM	64
	65	static int board_id(arm_sysctl_state *s)
	66	{
	67	/* Extract the board ID field from the SYS_ID register value */
	68	return (s->sys_id >> 16) & 0xfff;
	69	}
	70
be0f204a PB	71	static void arm_sysctl_reset(DeviceState *d)
	72	{
	73	arm_sysctl_state *s = FROM_SYSBUS(arm_sysctl_state, sysbus_from_qdev(d));
	74
	75	s->leds = 0;
	76	s->lockval = 0;
	77	s->cfgdata1 = 0;
	78	s->cfgdata2 = 0;
	79	s->flags = 0;
	80	s->resetlevel = 0;
	81	}
	82
c227f099	83	static uint32_t arm_sysctl_read(void *opaque, target_phys_addr_t offset)
e69954b9 PB	84	{
	85	arm_sysctl_state s = (arm_sysctl_state )opaque;
	86
e69954b9 PB	87	switch (offset) {
	88	case 0x00: /* ID */
	89	return s->sys_id;
	90	case 0x04: /* SW */
	91	/* General purpose hardware switches.
	92	We don't have a useful way of exposing these to the user. */
	93	return 0;
	94	case 0x08: /* LED */
	95	return s->leds;
	96	case 0x20: /* LOCK */
	97	return s->lockval;
	98	case 0x0c: /* OSC0 */
	99	case 0x10: /* OSC1 */
	100	case 0x14: /* OSC2 */
	101	case 0x18: /* OSC3 */
	102	case 0x1c: /* OSC4 */
	103	case 0x24: /* 100HZ */
	104	/* ??? Implement these. */
	105	return 0;
	106	case 0x28: /* CFGDATA1 */
	107	return s->cfgdata1;
	108	case 0x2c: /* CFGDATA2 */
	109	return s->cfgdata2;
	110	case 0x30: /* FLAGS */
	111	return s->flags;
	112	case 0x38: /* NVFLAGS */
	113	return s->nvflags;
	114	case 0x40: /* RESETCTL */
34933c8c PM	115	if (board_id(s) == BOARD_ID_VEXPRESS) {
	116	/* reserved: RAZ/WI */
	117	return 0;
	118	}
e69954b9 PB	119	return s->resetlevel;
	120	case 0x44: /* PCICTL */
	121	return 1;
	122	case 0x48: /* MCI */
b50ff6f5	123	return s->sys_mci;
e69954b9 PB	124	case 0x4c: /* FLASH */
	125	return 0;
	126	case 0x50: /* CLCD */
	127	return 0x1000;
	128	case 0x54: /* CLCDSER */
	129	return 0;
	130	case 0x58: /* BOOTCS */
	131	return 0;
	132	case 0x5c: /* 24MHz */
74475455	133	return muldiv64(qemu_get_clock_ns(vm_clock), 24000000, get_ticks_per_sec());
e69954b9 PB	134	case 0x60: /* MISC */
	135	return 0;
	136	case 0x84: /* PROCID0 */
26e92f65	137	return s->proc_id;
e69954b9 PB	138	case 0x88: /* PROCID1 */
	139	return 0xff000000;
	140	case 0x64: /* DMAPSR0 */
	141	case 0x68: /* DMAPSR1 */
	142	case 0x6c: /* DMAPSR2 */
	143	case 0x70: /* IOSEL */
	144	case 0x74: /* PLDCTL */
	145	case 0x80: /* BUSID */
	146	case 0x8c: /* OSCRESET0 */
	147	case 0x90: /* OSCRESET1 */
	148	case 0x94: /* OSCRESET2 */
	149	case 0x98: /* OSCRESET3 */
	150	case 0x9c: /* OSCRESET4 */
	151	case 0xc0: /* SYS_TEST_OSC0 */
	152	case 0xc4: /* SYS_TEST_OSC1 */
	153	case 0xc8: /* SYS_TEST_OSC2 */
	154	case 0xcc: /* SYS_TEST_OSC3 */
	155	case 0xd0: /* SYS_TEST_OSC4 */
	156	return 0;
34933c8c PM	157	case 0xa0: /* SYS_CFGDATA */
	158	if (board_id(s) != BOARD_ID_VEXPRESS) {
	159	goto bad_reg;
	160	}
	161	return s->sys_cfgdata;
	162	case 0xa4: /* SYS_CFGCTRL */
	163	if (board_id(s) != BOARD_ID_VEXPRESS) {
	164	goto bad_reg;
	165	}
	166	return s->sys_cfgctrl;
	167	case 0xa8: /* SYS_CFGSTAT */
	168	if (board_id(s) != BOARD_ID_VEXPRESS) {
	169	goto bad_reg;
	170	}
	171	return s->sys_cfgstat;
e69954b9	172	default:
34933c8c	173	bad_reg:
e69954b9 PB	174	printf ("arm_sysctl_read: Bad register offset 0x%x\n", (int)offset);
	175	return 0;
	176	}
	177	}
	178
c227f099	179	static void arm_sysctl_write(void *opaque, target_phys_addr_t offset,
e69954b9 PB	180	uint32_t val)
	181	{
	182	arm_sysctl_state s = (arm_sysctl_state )opaque;
e69954b9 PB	183
	184	switch (offset) {
	185	case 0x08: /* LED */
	186	s->leds = val;
	187	case 0x0c: /* OSC0 */
	188	case 0x10: /* OSC1 */
	189	case 0x14: /* OSC2 */
	190	case 0x18: /* OSC3 */
	191	case 0x1c: /* OSC4 */
	192	/* ??? */
	193	break;
	194	case 0x20: /* LOCK */
	195	if (val == LOCK_VALUE)
	196	s->lockval = val;
	197	else
	198	s->lockval = val & 0x7fff;
	199	break;
	200	case 0x28: /* CFGDATA1 */
	201	/* ??? Need to implement this. */
	202	s->cfgdata1 = val;
	203	break;
	204	case 0x2c: /* CFGDATA2 */
	205	/* ??? Need to implement this. */
	206	s->cfgdata2 = val;
	207	break;
	208	case 0x30: /* FLAGSSET */
	209	s->flags \|= val;
	210	break;
	211	case 0x34: /* FLAGSCLR */
	212	s->flags &= ~val;
	213	break;
	214	case 0x38: /* NVFLAGSSET */
	215	s->nvflags \|= val;
	216	break;
	217	case 0x3c: /* NVFLAGSCLR */
	218	s->nvflags &= ~val;
	219	break;
	220	case 0x40: /* RESETCTL */
34933c8c PM	221	if (board_id(s) == BOARD_ID_VEXPRESS) {
	222	/* reserved: RAZ/WI */
	223	break;
	224	}
e69954b9 PB	225	if (s->lockval == LOCK_VALUE) {
	226	s->resetlevel = val;
	227	if (val & 0x100)
f3d6b95e	228	qemu_system_reset_request ();
e69954b9 PB	229	}
	230	break;
	231	case 0x44: /* PCICTL */
	232	/* nothing to do. */
	233	break;
	234	case 0x4c: /* FLASH */
	235	case 0x50: /* CLCD */
	236	case 0x54: /* CLCDSER */
	237	case 0x64: /* DMAPSR0 */
	238	case 0x68: /* DMAPSR1 */
	239	case 0x6c: /* DMAPSR2 */
	240	case 0x70: /* IOSEL */
	241	case 0x74: /* PLDCTL */
	242	case 0x80: /* BUSID */
	243	case 0x84: /* PROCID0 */
	244	case 0x88: /* PROCID1 */
	245	case 0x8c: /* OSCRESET0 */
	246	case 0x90: /* OSCRESET1 */
	247	case 0x94: /* OSCRESET2 */
	248	case 0x98: /* OSCRESET3 */
	249	case 0x9c: /* OSCRESET4 */
	250	break;
34933c8c PM	251	case 0xa0: /* SYS_CFGDATA */
	252	if (board_id(s) != BOARD_ID_VEXPRESS) {
	253	goto bad_reg;
	254	}
	255	s->sys_cfgdata = val;
	256	return;
	257	case 0xa4: /* SYS_CFGCTRL */
	258	if (board_id(s) != BOARD_ID_VEXPRESS) {
	259	goto bad_reg;
	260	}
	261	s->sys_cfgctrl = val & ~(3 << 18);
	262	s->sys_cfgstat = 1; /* complete */
	263	switch (s->sys_cfgctrl) {
	264	case 0xc0800000: /* SYS_CFG_SHUTDOWN to motherboard */
	265	qemu_system_shutdown_request();
	266	break;
	267	case 0xc0900000: /* SYS_CFG_REBOOT to motherboard */
	268	qemu_system_reset_request();
	269	break;
	270	default:
	271	s->sys_cfgstat \|= 2; /* error */
	272	}
	273	return;
	274	case 0xa8: /* SYS_CFGSTAT */
	275	if (board_id(s) != BOARD_ID_VEXPRESS) {
	276	goto bad_reg;
	277	}
	278	s->sys_cfgstat = val & 3;
	279	return;
e69954b9	280	default:
34933c8c	281	bad_reg:
e69954b9 PB	282	printf ("arm_sysctl_write: Bad register offset 0x%x\n", (int)offset);
	283	return;
	284	}
	285	}
	286
d60efc6b	287	static CPUReadMemoryFunc * const arm_sysctl_readfn[] = {
e69954b9 PB	288	arm_sysctl_read,
	289	arm_sysctl_read,
	290	arm_sysctl_read
	291	};
	292
d60efc6b	293	static CPUWriteMemoryFunc * const arm_sysctl_writefn[] = {
e69954b9 PB	294	arm_sysctl_write,
	295	arm_sysctl_write,
	296	arm_sysctl_write
	297	};
	298
b50ff6f5 PM	299	static void arm_sysctl_gpio_set(void *opaque, int line, int level)
	300	{
	301	arm_sysctl_state s = (arm_sysctl_state )opaque;
	302	switch (line) {
	303	case ARM_SYSCTL_GPIO_MMC_WPROT:
	304	{
	305	/* For PB926 and EB write-protect is bit 2 of SYS_MCI;
	306	* for all later boards it is bit 1.
	307	*/
	308	int bit = 2;
	309	if ((board_id(s) == BOARD_ID_PB926) \|\| (board_id(s) == BOARD_ID_EB)) {
	310	bit = 4;
	311	}
	312	s->sys_mci &= ~bit;
	313	if (level) {
	314	s->sys_mci \|= bit;
	315	}
	316	break;
	317	}
	318	case ARM_SYSCTL_GPIO_MMC_CARDIN:
	319	s->sys_mci &= ~1;
	320	if (level) {
	321	s->sys_mci \|= 1;
	322	}
	323	break;
	324	}
	325	}
	326
81a322d4	327	static int arm_sysctl_init1(SysBusDevice *dev)
e69954b9	328	{
82634c2d	329	arm_sysctl_state *s = FROM_SYSBUS(arm_sysctl_state, dev);
e69954b9 PB	330	int iomemtype;
e69954b9 PB	331
1eed09cb	332	iomemtype = cpu_register_io_memory(arm_sysctl_readfn,
2507c12a AG	333	arm_sysctl_writefn, s,
2507c12a AG	334	DEVICE_NATIVE_ENDIAN);
82634c2d	335	sysbus_init_mmio(dev, 0x1000, iomemtype);
b50ff6f5	336	qdev_init_gpio_in(&s->busdev.qdev, arm_sysctl_gpio_set, 2);
e69954b9	337	/* ??? Save/restore. */
81a322d4	338	return 0;
e69954b9	339	}
82634c2d PB	340
82634c2d PB	341	/* Legacy helper function. */
26e92f65	342	void arm_sysctl_init(uint32_t base, uint32_t sys_id, uint32_t proc_id)
82634c2d PB	343	{
	344	DeviceState *dev;
	345
	346	dev = qdev_create(NULL, "realview_sysctl");
ee6847d1	347	qdev_prop_set_uint32(dev, "sys_id", sys_id);
e23a1b33	348	qdev_init_nofail(dev);
26e92f65	349	qdev_prop_set_uint32(dev, "proc_id", proc_id);
82634c2d PB	350	sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
	351	}
	352
ee6847d1 GH	353	static SysBusDeviceInfo arm_sysctl_info = {
	354	.init = arm_sysctl_init1,
	355	.qdev.name = "realview_sysctl",
	356	.qdev.size = sizeof(arm_sysctl_state),
b5ad0ae7	357	.qdev.vmsd = &vmstate_arm_sysctl,
be0f204a	358	.qdev.reset = arm_sysctl_reset,
ee6847d1	359	.qdev.props = (Property[]) {
e325775b	360	DEFINE_PROP_UINT32("sys_id", arm_sysctl_state, sys_id, 0),
26e92f65	361	DEFINE_PROP_UINT32("proc_id", arm_sysctl_state, proc_id, 0),
e325775b	362	DEFINE_PROP_END_OF_LIST(),
ee6847d1 GH	363	}
	364	};
	365
82634c2d PB	366	static void arm_sysctl_register_devices(void)
82634c2d PB	367	{
ee6847d1	368	sysbus_register_withprop(&arm_sysctl_info);
82634c2d PB	369	}
	370
	371	device_init(arm_sysctl_register_devices)