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i.MX: Add code to emulate i.MX7 CCM, PMU and ANALOG IP blocks 

Add minimal code needed to allow upstream Linux guest to boot.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: qemu-devel@nongnu.org
Cc: qemu-arm@nongnu.org
Cc: yurovsky@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Andrey Smirnov 2018-02-09 10:40:29 +00:00 committed by Peter Maydell
parent df2a5cf4c8
commit e9e0ef15d2
3 changed files with 417 additions and 0 deletions
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1
hw/misc/Makefile.objs
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@ -33,6 +33,7 @@ obj-$(CONFIG_IMX) += imx31_ccm.o
obj-$(CONFIG_IMX) += imx25_ccm.o
obj-$(CONFIG_IMX) += imx6_ccm.o
obj-$(CONFIG_IMX) += imx6_src.o
obj-$(CONFIG_IMX) += imx7_ccm.o
obj-$(CONFIG_MILKYMIST) += milkymist-hpdmc.o
obj-$(CONFIG_MILKYMIST) += milkymist-pfpu.o
obj-$(CONFIG_MAINSTONE) += mst_fpga.o

277
hw/misc/imx7_ccm.c Normal file
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@ -0,0 +1,277 @@
/*
* Copyright (c) 2018, Impinj, Inc.
*
* i.MX7 CCM, PMU and ANALOG IP blocks emulation code
*
* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "hw/misc/imx7_ccm.h"
static void imx7_analog_reset(DeviceState *dev)
{
IMX7AnalogState *s = IMX7_ANALOG(dev);
memset(s->pmu, 0, sizeof(s->pmu));
memset(s->analog, 0, sizeof(s->analog));
s->analog[ANALOG_PLL_ARM] = 0x00002042;
s->analog[ANALOG_PLL_DDR] = 0x0060302c;
s->analog[ANALOG_PLL_DDR_SS] = 0x00000000;
s->analog[ANALOG_PLL_DDR_NUM] = 0x06aaac4d;
s->analog[ANALOG_PLL_DDR_DENOM] = 0x100003ec;
s->analog[ANALOG_PLL_480] = 0x00002000;
s->analog[ANALOG_PLL_480A] = 0x52605a56;
s->analog[ANALOG_PLL_480B] = 0x52525216;
s->analog[ANALOG_PLL_ENET] = 0x00001fc0;
s->analog[ANALOG_PLL_AUDIO] = 0x0001301b;
s->analog[ANALOG_PLL_AUDIO_SS] = 0x00000000;
s->analog[ANALOG_PLL_AUDIO_NUM] = 0x05f5e100;
s->analog[ANALOG_PLL_AUDIO_DENOM] = 0x2964619c;
s->analog[ANALOG_PLL_VIDEO] = 0x0008201b;
s->analog[ANALOG_PLL_VIDEO_SS] = 0x00000000;
s->analog[ANALOG_PLL_VIDEO_NUM] = 0x0000f699;
s->analog[ANALOG_PLL_VIDEO_DENOM] = 0x000f4240;
s->analog[ANALOG_PLL_MISC0] = 0x00000000;
/* all PLLs need to be locked */
s->analog[ANALOG_PLL_ARM] |= ANALOG_PLL_LOCK;
s->analog[ANALOG_PLL_DDR] |= ANALOG_PLL_LOCK;
s->analog[ANALOG_PLL_480] |= ANALOG_PLL_LOCK;
s->analog[ANALOG_PLL_480A] |= ANALOG_PLL_LOCK;
s->analog[ANALOG_PLL_480B] |= ANALOG_PLL_LOCK;
s->analog[ANALOG_PLL_ENET] |= ANALOG_PLL_LOCK;
s->analog[ANALOG_PLL_AUDIO] |= ANALOG_PLL_LOCK;
s->analog[ANALOG_PLL_VIDEO] |= ANALOG_PLL_LOCK;
s->analog[ANALOG_PLL_MISC0] |= ANALOG_PLL_LOCK;
/*
* Since I couldn't find any info about this in the reference
* manual the value of this register is based strictly on matching
* what Linux kernel expects it to be.
*/
s->analog[ANALOG_DIGPROG] = 0x720000;
/*
* Set revision to be 1.0 (Arbitrary choice, no particular
* reason).
*/
s->analog[ANALOG_DIGPROG] |= 0x000010;
}
static void imx7_ccm_reset(DeviceState *dev)
{
IMX7CCMState *s = IMX7_CCM(dev);
memset(s->ccm, 0, sizeof(s->ccm));
}
#define CCM_INDEX(offset) (((offset) & ~(hwaddr)0xF) / sizeof(uint32_t))
#define CCM_BITOP(offset) ((offset) & (hwaddr)0xF)
enum {
CCM_BITOP_NONE = 0x00,
CCM_BITOP_SET = 0x04,
CCM_BITOP_CLR = 0x08,
CCM_BITOP_TOG = 0x0C,
};
static uint64_t imx7_set_clr_tog_read(void *opaque, hwaddr offset,
unsigned size)
{
const uint32_t *mmio = opaque;
return mmio[CCM_INDEX(offset)];
}
static void imx7_set_clr_tog_write(void *opaque, hwaddr offset,
uint64_t value, unsigned size)
{
const uint8_t bitop = CCM_BITOP(offset);
const uint32_t index = CCM_INDEX(offset);
uint32_t *mmio = opaque;
switch (bitop) {
case CCM_BITOP_NONE:
mmio[index] = value;
break;
case CCM_BITOP_SET:
mmio[index] |= value;
break;
case CCM_BITOP_CLR:
mmio[index] &= ~value;
break;
case CCM_BITOP_TOG:
mmio[index] ^= value;
break;
};
}
static const struct MemoryRegionOps imx7_set_clr_tog_ops = {
.read = imx7_set_clr_tog_read,
.write = imx7_set_clr_tog_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
/*
* Our device would not work correctly if the guest was doing
* unaligned access. This might not be a limitation on the real
* device but in practice there is no reason for a guest to access
* this device unaligned.
*/
.min_access_size = 4,
.max_access_size = 4,
.unaligned = false,
},
};
static const struct MemoryRegionOps imx7_digprog_ops = {
.read = imx7_set_clr_tog_read,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
.unaligned = false,
},
};
static void imx7_ccm_init(Object *obj)
{
SysBusDevice *sd = SYS_BUS_DEVICE(obj);
IMX7CCMState *s = IMX7_CCM(obj);
memory_region_init_io(&s->iomem,
obj,
&imx7_set_clr_tog_ops,
s->ccm,
TYPE_IMX7_CCM ".ccm",
sizeof(s->ccm));
sysbus_init_mmio(sd, &s->iomem);
}
static void imx7_analog_init(Object *obj)
{
SysBusDevice *sd = SYS_BUS_DEVICE(obj);
IMX7AnalogState *s = IMX7_ANALOG(obj);
memory_region_init(&s->mmio.container, obj, TYPE_IMX7_ANALOG,
0x10000);
memory_region_init_io(&s->mmio.analog,
obj,
&imx7_set_clr_tog_ops,
s->analog,
TYPE_IMX7_ANALOG,
sizeof(s->analog));
memory_region_add_subregion(&s->mmio.container,
0x60, &s->mmio.analog);
memory_region_init_io(&s->mmio.pmu,
obj,
&imx7_set_clr_tog_ops,
s->pmu,
TYPE_IMX7_ANALOG ".pmu",
sizeof(s->pmu));
memory_region_add_subregion(&s->mmio.container,
0x200, &s->mmio.pmu);
memory_region_init_io(&s->mmio.digprog,
obj,
&imx7_digprog_ops,
&s->analog[ANALOG_DIGPROG],
TYPE_IMX7_ANALOG ".digprog",
sizeof(uint32_t));
memory_region_add_subregion_overlap(&s->mmio.container,
0x800, &s->mmio.digprog, 10);
sysbus_init_mmio(sd, &s->mmio.container);
}
static const VMStateDescription vmstate_imx7_ccm = {
.name = TYPE_IMX7_CCM,
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(ccm, IMX7CCMState, CCM_MAX),
VMSTATE_END_OF_LIST()
},
};
static uint32_t imx7_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock)
{
/*
* This function is "consumed" by GPT emulation code, however on
* i.MX7 each GPT block can have their own clock root. This means
* that this functions needs somehow to know requester's identity
* and the way to pass it: be it via additional IMXClk constants
* or by adding another argument to this method needs to be
* figured out
*/
qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Not implemented\n",
TYPE_IMX7_CCM, __func__);
return 0;
}
static void imx7_ccm_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
IMXCCMClass *ccm = IMX_CCM_CLASS(klass);
dc->reset = imx7_ccm_reset;
dc->vmsd = &vmstate_imx7_ccm;
dc->desc = "i.MX7 Clock Control Module";
ccm->get_clock_frequency = imx7_ccm_get_clock_frequency;
}
static const TypeInfo imx7_ccm_info = {
.name = TYPE_IMX7_CCM,
.parent = TYPE_IMX_CCM,
.instance_size = sizeof(IMX7CCMState),
.instance_init = imx7_ccm_init,
.class_init = imx7_ccm_class_init,
};
static const VMStateDescription vmstate_imx7_analog = {
.name = TYPE_IMX7_ANALOG,
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(analog, IMX7AnalogState, ANALOG_MAX),
VMSTATE_UINT32_ARRAY(pmu, IMX7AnalogState, PMU_MAX),
VMSTATE_END_OF_LIST()
},
};
static void imx7_analog_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->reset = imx7_analog_reset;
dc->vmsd = &vmstate_imx7_analog;
dc->desc = "i.MX7 Analog Module";
}
static const TypeInfo imx7_analog_info = {
.name = TYPE_IMX7_ANALOG,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(IMX7AnalogState),
.instance_init = imx7_analog_init,
.class_init = imx7_analog_class_init,
};
static void imx7_ccm_register_type(void)
{
type_register_static(&imx7_ccm_info);
type_register_static(&imx7_analog_info);
}
type_init(imx7_ccm_register_type)

139
include/hw/misc/imx7_ccm.h Normal file
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@ -0,0 +1,139 @@
/*
* Copyright (c) 2017, Impinj, Inc.
*
* i.MX7 CCM, PMU and ANALOG IP blocks emulation code
*
* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef IMX7_CCM_H
#define IMX7_CCM_H
#include "hw/misc/imx_ccm.h"
#include "qemu/bitops.h"
enum IMX7AnalogRegisters {
ANALOG_PLL_ARM,
ANALOG_PLL_ARM_SET,
ANALOG_PLL_ARM_CLR,
ANALOG_PLL_ARM_TOG,
ANALOG_PLL_DDR,
ANALOG_PLL_DDR_SET,
ANALOG_PLL_DDR_CLR,
ANALOG_PLL_DDR_TOG,
ANALOG_PLL_DDR_SS,
ANALOG_PLL_DDR_SS_SET,
ANALOG_PLL_DDR_SS_CLR,
ANALOG_PLL_DDR_SS_TOG,
ANALOG_PLL_DDR_NUM,
ANALOG_PLL_DDR_NUM_SET,
ANALOG_PLL_DDR_NUM_CLR,
ANALOG_PLL_DDR_NUM_TOG,
ANALOG_PLL_DDR_DENOM,
ANALOG_PLL_DDR_DENOM_SET,
ANALOG_PLL_DDR_DENOM_CLR,
ANALOG_PLL_DDR_DENOM_TOG,
ANALOG_PLL_480,
ANALOG_PLL_480_SET,
ANALOG_PLL_480_CLR,
ANALOG_PLL_480_TOG,
ANALOG_PLL_480A,
ANALOG_PLL_480A_SET,
ANALOG_PLL_480A_CLR,
ANALOG_PLL_480A_TOG,
ANALOG_PLL_480B,
ANALOG_PLL_480B_SET,
ANALOG_PLL_480B_CLR,
ANALOG_PLL_480B_TOG,
ANALOG_PLL_ENET,
ANALOG_PLL_ENET_SET,
ANALOG_PLL_ENET_CLR,
ANALOG_PLL_ENET_TOG,
ANALOG_PLL_AUDIO,
ANALOG_PLL_AUDIO_SET,
ANALOG_PLL_AUDIO_CLR,
ANALOG_PLL_AUDIO_TOG,
ANALOG_PLL_AUDIO_SS,
ANALOG_PLL_AUDIO_SS_SET,
ANALOG_PLL_AUDIO_SS_CLR,
ANALOG_PLL_AUDIO_SS_TOG,
ANALOG_PLL_AUDIO_NUM,
ANALOG_PLL_AUDIO_NUM_SET,
ANALOG_PLL_AUDIO_NUM_CLR,
ANALOG_PLL_AUDIO_NUM_TOG,
ANALOG_PLL_AUDIO_DENOM,
ANALOG_PLL_AUDIO_DENOM_SET,
ANALOG_PLL_AUDIO_DENOM_CLR,
ANALOG_PLL_AUDIO_DENOM_TOG,
ANALOG_PLL_VIDEO,
ANALOG_PLL_VIDEO_SET,
ANALOG_PLL_VIDEO_CLR,
ANALOG_PLL_VIDEO_TOG,
ANALOG_PLL_VIDEO_SS,
ANALOG_PLL_VIDEO_SS_SET,
ANALOG_PLL_VIDEO_SS_CLR,
ANALOG_PLL_VIDEO_SS_TOG,
ANALOG_PLL_VIDEO_NUM,
ANALOG_PLL_VIDEO_NUM_SET,
ANALOG_PLL_VIDEO_NUM_CLR,
ANALOG_PLL_VIDEO_NUM_TOG,
ANALOG_PLL_VIDEO_DENOM,
ANALOG_PLL_VIDEO_DENOM_SET,
ANALOG_PLL_VIDEO_DENOM_CLR,
ANALOG_PLL_VIDEO_DENOM_TOG,
ANALOG_PLL_MISC0,
ANALOG_PLL_MISC0_SET,
ANALOG_PLL_MISC0_CLR,
ANALOG_PLL_MISC0_TOG,
ANALOG_DIGPROG = 0x800 / sizeof(uint32_t),
ANALOG_MAX,
ANALOG_PLL_LOCK = BIT(31)
};
enum IMX7CCMRegisters {
CCM_MAX = 0xBE00 / sizeof(uint32_t) + 1,
};
enum IMX7PMURegisters {
PMU_MAX = 0x140 / sizeof(uint32_t),
};
#define TYPE_IMX7_CCM "imx7.ccm"
#define IMX7_CCM(obj) OBJECT_CHECK(IMX7CCMState, (obj), TYPE_IMX7_CCM)
typedef struct IMX7CCMState {
/* <private> */
IMXCCMState parent_obj;
/* <public> */
MemoryRegion iomem;
uint32_t ccm[CCM_MAX];
} IMX7CCMState;
#define TYPE_IMX7_ANALOG "imx7.analog"
#define IMX7_ANALOG(obj) OBJECT_CHECK(IMX7AnalogState, (obj), TYPE_IMX7_ANALOG)
typedef struct IMX7AnalogState {
/* <private> */
IMXCCMState parent_obj;
/* <public> */
struct {
MemoryRegion container;
MemoryRegion analog;
MemoryRegion digprog;
MemoryRegion pmu;
} mmio;
uint32_t analog[ANALOG_MAX];
uint32_t pmu[PMU_MAX];
} IMX7AnalogState;
#endif /* IMX7_CCM_H */