/*
* QEMU model of the CRF - Clock Reset FPD.
*
* Copyright (c) 2022 Xilinx Inc.
* SPDX-License-Identifier: GPL-2.0-or-later
* Written by Edgar E. Iglesias <edgar.iglesias@xilinx.com>
*/
#include "qemu/osdep.h"
#include "hw/sysbus.h"
#include "hw/register.h"
#include "qemu/bitops.h"
#include "qemu/log.h"
#include "migration/vmstate.h"
#include "hw/irq.h"
#include "hw/misc/xlnx-zynqmp-crf.h"
#include "target/arm/arm-powerctl.h"
#ifndef XLNX_ZYNQMP_CRF_ERR_DEBUG
#define XLNX_ZYNQMP_CRF_ERR_DEBUG 0
#endif
#define CRF_MAX_CPU 4
static void ir_update_irq(XlnxZynqMPCRF *s)
{
bool pending = s->regs[R_IR_STATUS] & ~s->regs[R_IR_MASK];
qemu_set_irq(s->irq_ir, pending);
}
static void ir_status_postw(RegisterInfo *reg, uint64_t val64)
{
XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(reg->opaque);
ir_update_irq(s);
}
static uint64_t ir_enable_prew(RegisterInfo *reg, uint64_t val64)
{
XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(reg->opaque);
uint32_t val = val64;
s->regs[R_IR_MASK] &= ~val;
ir_update_irq(s);
return 0;
}
static uint64_t ir_disable_prew(RegisterInfo *reg, uint64_t val64)
{
XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(reg->opaque);
uint32_t val = val64;
s->regs[R_IR_MASK] |= val;
ir_update_irq(s);
return 0;
}
static uint64_t rst_fpd_apu_prew(RegisterInfo *reg, uint64_t val64)
{
XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(reg->opaque);
uint32_t val = val64;
uint32_t val_old = s->regs[R_RST_FPD_APU];
unsigned int i;
for (i = 0; i < CRF_MAX_CPU; i++) {
uint32_t mask = (1 << (R_RST_FPD_APU_ACPU0_RESET_SHIFT + i));
if ((val ^ val_old) & mask) {
if (val & mask) {
arm_set_cpu_off(i);
} else {
arm_set_cpu_on_and_reset(i);
}
}
}
return val64;
}
static const RegisterAccessInfo crf_regs_info[] = {
{ .name = "ERR_CTRL", .addr = A_ERR_CTRL,
},{ .name = "IR_STATUS", .addr = A_IR_STATUS,
.w1c = 0x1,
.post_write = ir_status_postw,
},{ .name = "IR_MASK", .addr = A_IR_MASK,
.reset = 0x1,
.ro = 0x1,
},{ .name = "IR_ENABLE", .addr = A_IR_ENABLE,
.pre_write = ir_enable_prew,
},{ .name = "IR_DISABLE", .addr = A_IR_DISABLE,
.pre_write = ir_disable_prew,
},{ .name = "CRF_WPROT", .addr = A_CRF_WPROT,
},{ .name = "APLL_CTRL", .addr = A_APLL_CTRL,
.reset = 0x12c09,
.rsvd = 0xf88c80f6,
},{ .name = "APLL_CFG", .addr = A_APLL_CFG,
.rsvd = 0x1801210,
},{ .name = "APLL_FRAC_CFG", .addr = A_APLL_FRAC_CFG,
.rsvd = 0x7e330000,
},{ .name = "DPLL_CTRL", .addr = A_DPLL_CTRL,
.reset = 0x2c09,
.rsvd = 0xf88c80f6,
},{ .name = "DPLL_CFG", .addr = A_DPLL_CFG,
.rsvd = 0x1801210,
},{ .name = "DPLL_FRAC_CFG", .addr = A_DPLL_FRAC_CFG,
.rsvd = 0x7e330000,
},{ .name = "VPLL_CTRL", .addr = A_VPLL_CTRL,
.reset = 0x12809,
.rsvd = 0xf88c80f6,
},{ .name = "VPLL_CFG", .addr = A_VPLL_CFG,
.rsvd = 0x1801210,
},{ .name = "VPLL_FRAC_CFG", .addr = A_VPLL_FRAC_CFG,
.rsvd = 0x7e330000,
},{ .name = "PLL_STATUS", .addr = A_PLL_STATUS,
.reset = 0x3f,
.rsvd = 0xc0,
.ro = 0x3f,
},{ .name = "APLL_TO_LPD_CTRL", .addr = A_APLL_TO_LPD_CTRL,
.reset = 0x400,
.rsvd = 0xc0ff,
},{ .name = "DPLL_TO_LPD_CTRL", .addr = A_DPLL_TO_LPD_CTRL,
.reset = 0x400,
.rsvd = 0xc0ff,
},{ .name = "VPLL_TO_LPD_CTRL", .addr = A_VPLL_TO_LPD_CTRL,
.reset = 0x400,
.rsvd = 0xc0ff,
},{ .name = "ACPU_CTRL", .addr = A_ACPU_CTRL,
.reset = 0x3000400,
.rsvd = 0xfcffc0f8,
},{ .name = "DBG_TRACE_CTRL", .addr = A_DBG_TRACE_CTRL,
.reset = 0x2500,
.rsvd = 0xfeffc0f8,
},{ .name = "DBG_FPD_CTRL", .addr = A_DBG_FPD_CTRL,
.reset = 0x1002500,
.rsvd = 0xfeffc0f8,
},{ .name = "DP_VIDEO_REF_CTRL", .addr = A_DP_VIDEO_REF_CTRL,
.reset = 0x1002300,
.rsvd = 0xfec0c0f8,
},{ .name = "DP_AUDIO_REF_CTRL", .addr = A_DP_AUDIO_REF_CTRL,
.reset = 0x1032300,
.rsvd = 0xfec0c0f8,
},{ .name = "DP_STC_REF_CTRL", .addr = A_DP_STC_REF_CTRL,
.reset = 0x1203200,
.rsvd = 0xfec0c0f8,
},{ .name = "DDR_CTRL", .addr = A_DDR_CTRL,
.reset = 0x1000500,
.rsvd = 0xfeffc0f8,
},{ .name = "GPU_REF_CTRL", .addr = A_GPU_REF_CTRL,
.reset = 0x1500,
.rsvd = 0xf8ffc0f8,
},{ .name = "SATA_REF_CTRL", .addr = A_SATA_REF_CTRL,
.reset = 0x1001600,
.rsvd = 0xfeffc0f8,
},{ .name = "PCIE_REF_CTRL", .addr = A_PCIE_REF_CTRL,
.reset = 0x1500,
.rsvd = 0xfeffc0f8,
},{ .name = "GDMA_REF_CTRL", .addr = A_GDMA_REF_CTRL,
.reset = 0x1000500,
.rsvd = 0xfeffc0f8,
},{ .name = "DPDMA_REF_CTRL", .addr = A_DPDMA_REF_CTRL,
.reset = 0x1000500,
.rsvd = 0xfeffc0f8,
},{ .name = "TOPSW_MAIN_CTRL", .addr = A_TOPSW_MAIN_CTRL,
.reset = 0x1000400,
.rsvd = 0xfeffc0f8,
},{ .name = "TOPSW_LSBUS_CTRL", .addr = A_TOPSW_LSBUS_CTRL,
.reset = 0x1000800,
.rsvd = 0xfeffc0f8,
},{ .name = "DBG_TSTMP_CTRL", .addr = A_DBG_TSTMP_CTRL,
.reset = 0xa00,
.rsvd = 0xffffc0f8,
},
{ .name = "RST_FPD_TOP", .addr = A_RST_FPD_TOP,
.reset = 0xf9ffe,
.rsvd = 0xf06001,
},{ .name = "RST_FPD_APU", .addr = A_RST_FPD_APU,
.reset = 0x3d0f,
.rsvd = 0xc2f0,
.pre_write = rst_fpd_apu_prew,
},{ .name = "RST_DDR_SS", .addr = A_RST_DDR_SS,
.reset = 0xf,
.rsvd = 0xf3,
}
};
static void crf_reset_enter(Object *obj, ResetType type)
{
XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(obj);
unsigned int i;
for (i = 0; i < ARRAY_SIZE(s->regs_info); ++i) {
register_reset(&s->regs_info[i]);
}
}
static void crf_reset_hold(Object *obj)
{
XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(obj);
ir_update_irq(s);
}
static const MemoryRegionOps crf_ops = {
.read = register_read_memory,
.write = register_write_memory,
.endianness = DEVICE_LITTLE_ENDIAN,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
},
};
static void crf_init(Object *obj)
{
XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
s->reg_array =
register_init_block32(DEVICE(obj), crf_regs_info,
ARRAY_SIZE(crf_regs_info),
s->regs_info, s->regs,
&crf_ops,
XLNX_ZYNQMP_CRF_ERR_DEBUG,
CRF_R_MAX * 4);
sysbus_init_mmio(sbd, &s->reg_array->mem);
sysbus_init_irq(sbd, &s->irq_ir);
}
static void crf_finalize(Object *obj)
{
XlnxZynqMPCRF *s = XLNX_ZYNQMP_CRF(obj);
register_finalize_block(s->reg_array);
}
static const VMStateDescription vmstate_crf = {
.name = TYPE_XLNX_ZYNQMP_CRF,
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(regs, XlnxZynqMPCRF, CRF_R_MAX),
VMSTATE_END_OF_LIST(),
}
};
static void crf_class_init(ObjectClass *klass, void *data)
{
ResettableClass *rc = RESETTABLE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
dc->vmsd = &vmstate_crf;
rc->phases.enter = crf_reset_enter;
rc->phases.hold = crf_reset_hold;
}
static const TypeInfo crf_info = {
.name = TYPE_XLNX_ZYNQMP_CRF,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(XlnxZynqMPCRF),
.class_init = crf_class_init,
.instance_init = crf_init,
.instance_finalize = crf_finalize,
};
static void crf_register_types(void)
{
type_register_static(&crf_info);
}
type_init(crf_register_types)
