| /* |
| * Allwinner H3 Clock Control Unit emulation |
| * |
| * Copyright (C) 2019 Niek Linnenbank <nieklinnenbank@gmail.com> |
| * |
| * This program 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. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/units.h" |
| #include "hw/sysbus.h" |
| #include "migration/vmstate.h" |
| #include "qemu/log.h" |
| #include "qemu/module.h" |
| #include "hw/misc/allwinner-h3-ccu.h" |
| |
| /* CCU register offsets */ |
| enum { |
| REG_PLL_CPUX = 0x0000, /* PLL CPUX Control */ |
| REG_PLL_AUDIO = 0x0008, /* PLL Audio Control */ |
| REG_PLL_VIDEO = 0x0010, /* PLL Video Control */ |
| REG_PLL_VE = 0x0018, /* PLL VE Control */ |
| REG_PLL_DDR = 0x0020, /* PLL DDR Control */ |
| REG_PLL_PERIPH0 = 0x0028, /* PLL Peripherals 0 Control */ |
| REG_PLL_GPU = 0x0038, /* PLL GPU Control */ |
| REG_PLL_PERIPH1 = 0x0044, /* PLL Peripherals 1 Control */ |
| REG_PLL_DE = 0x0048, /* PLL Display Engine Control */ |
| REG_CPUX_AXI = 0x0050, /* CPUX/AXI Configuration */ |
| REG_APB1 = 0x0054, /* ARM Peripheral Bus 1 Config */ |
| REG_APB2 = 0x0058, /* ARM Peripheral Bus 2 Config */ |
| REG_DRAM_CFG = 0x00F4, /* DRAM Configuration */ |
| REG_MBUS = 0x00FC, /* MBUS Reset */ |
| REG_PLL_TIME0 = 0x0200, /* PLL Stable Time 0 */ |
| REG_PLL_TIME1 = 0x0204, /* PLL Stable Time 1 */ |
| REG_PLL_CPUX_BIAS = 0x0220, /* PLL CPUX Bias */ |
| REG_PLL_AUDIO_BIAS = 0x0224, /* PLL Audio Bias */ |
| REG_PLL_VIDEO_BIAS = 0x0228, /* PLL Video Bias */ |
| REG_PLL_VE_BIAS = 0x022C, /* PLL VE Bias */ |
| REG_PLL_DDR_BIAS = 0x0230, /* PLL DDR Bias */ |
| REG_PLL_PERIPH0_BIAS = 0x0234, /* PLL Peripherals 0 Bias */ |
| REG_PLL_GPU_BIAS = 0x023C, /* PLL GPU Bias */ |
| REG_PLL_PERIPH1_BIAS = 0x0244, /* PLL Peripherals 1 Bias */ |
| REG_PLL_DE_BIAS = 0x0248, /* PLL Display Engine Bias */ |
| REG_PLL_CPUX_TUNING = 0x0250, /* PLL CPUX Tuning */ |
| REG_PLL_DDR_TUNING = 0x0260, /* PLL DDR Tuning */ |
| }; |
| |
| #define REG_INDEX(offset) (offset / sizeof(uint32_t)) |
| |
| /* CCU register flags */ |
| enum { |
| REG_DRAM_CFG_UPDATE = (1 << 16), |
| }; |
| |
| enum { |
| REG_PLL_ENABLE = (1 << 31), |
| REG_PLL_LOCK = (1 << 28), |
| }; |
| |
| |
| /* CCU register reset values */ |
| enum { |
| REG_PLL_CPUX_RST = 0x00001000, |
| REG_PLL_AUDIO_RST = 0x00035514, |
| REG_PLL_VIDEO_RST = 0x03006207, |
| REG_PLL_VE_RST = 0x03006207, |
| REG_PLL_DDR_RST = 0x00001000, |
| REG_PLL_PERIPH0_RST = 0x00041811, |
| REG_PLL_GPU_RST = 0x03006207, |
| REG_PLL_PERIPH1_RST = 0x00041811, |
| REG_PLL_DE_RST = 0x03006207, |
| REG_CPUX_AXI_RST = 0x00010000, |
| REG_APB1_RST = 0x00001010, |
| REG_APB2_RST = 0x01000000, |
| REG_DRAM_CFG_RST = 0x00000000, |
| REG_MBUS_RST = 0x80000000, |
| REG_PLL_TIME0_RST = 0x000000FF, |
| REG_PLL_TIME1_RST = 0x000000FF, |
| REG_PLL_CPUX_BIAS_RST = 0x08100200, |
| REG_PLL_AUDIO_BIAS_RST = 0x10100000, |
| REG_PLL_VIDEO_BIAS_RST = 0x10100000, |
| REG_PLL_VE_BIAS_RST = 0x10100000, |
| REG_PLL_DDR_BIAS_RST = 0x81104000, |
| REG_PLL_PERIPH0_BIAS_RST = 0x10100010, |
| REG_PLL_GPU_BIAS_RST = 0x10100000, |
| REG_PLL_PERIPH1_BIAS_RST = 0x10100010, |
| REG_PLL_DE_BIAS_RST = 0x10100000, |
| REG_PLL_CPUX_TUNING_RST = 0x0A101000, |
| REG_PLL_DDR_TUNING_RST = 0x14880000, |
| }; |
| |
| static uint64_t allwinner_h3_ccu_read(void *opaque, hwaddr offset, |
| unsigned size) |
| { |
| const AwH3ClockCtlState *s = AW_H3_CCU(opaque); |
| const uint32_t idx = REG_INDEX(offset); |
| |
| switch (offset) { |
| case 0x308 ... AW_H3_CCU_IOSIZE: |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: out-of-bounds offset 0x%04x\n", |
| __func__, (uint32_t)offset); |
| return 0; |
| } |
| |
| return s->regs[idx]; |
| } |
| |
| static void allwinner_h3_ccu_write(void *opaque, hwaddr offset, |
| uint64_t val, unsigned size) |
| { |
| AwH3ClockCtlState *s = AW_H3_CCU(opaque); |
| const uint32_t idx = REG_INDEX(offset); |
| |
| switch (offset) { |
| case REG_DRAM_CFG: /* DRAM Configuration */ |
| val &= ~REG_DRAM_CFG_UPDATE; |
| break; |
| case REG_PLL_CPUX: /* PLL CPUX Control */ |
| case REG_PLL_AUDIO: /* PLL Audio Control */ |
| case REG_PLL_VIDEO: /* PLL Video Control */ |
| case REG_PLL_VE: /* PLL VE Control */ |
| case REG_PLL_DDR: /* PLL DDR Control */ |
| case REG_PLL_PERIPH0: /* PLL Peripherals 0 Control */ |
| case REG_PLL_GPU: /* PLL GPU Control */ |
| case REG_PLL_PERIPH1: /* PLL Peripherals 1 Control */ |
| case REG_PLL_DE: /* PLL Display Engine Control */ |
| if (val & REG_PLL_ENABLE) { |
| val |= REG_PLL_LOCK; |
| } |
| break; |
| case 0x308 ... AW_H3_CCU_IOSIZE: |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: out-of-bounds offset 0x%04x\n", |
| __func__, (uint32_t)offset); |
| break; |
| default: |
| qemu_log_mask(LOG_UNIMP, "%s: unimplemented write offset 0x%04x\n", |
| __func__, (uint32_t)offset); |
| break; |
| } |
| |
| s->regs[idx] = (uint32_t) val; |
| } |
| |
| static const MemoryRegionOps allwinner_h3_ccu_ops = { |
| .read = allwinner_h3_ccu_read, |
| .write = allwinner_h3_ccu_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| .valid = { |
| .min_access_size = 4, |
| .max_access_size = 4, |
| }, |
| .impl.min_access_size = 4, |
| }; |
| |
| static void allwinner_h3_ccu_reset(DeviceState *dev) |
| { |
| AwH3ClockCtlState *s = AW_H3_CCU(dev); |
| |
| /* Set default values for registers */ |
| s->regs[REG_INDEX(REG_PLL_CPUX)] = REG_PLL_CPUX_RST; |
| s->regs[REG_INDEX(REG_PLL_AUDIO)] = REG_PLL_AUDIO_RST; |
| s->regs[REG_INDEX(REG_PLL_VIDEO)] = REG_PLL_VIDEO_RST; |
| s->regs[REG_INDEX(REG_PLL_VE)] = REG_PLL_VE_RST; |
| s->regs[REG_INDEX(REG_PLL_DDR)] = REG_PLL_DDR_RST; |
| s->regs[REG_INDEX(REG_PLL_PERIPH0)] = REG_PLL_PERIPH0_RST; |
| s->regs[REG_INDEX(REG_PLL_GPU)] = REG_PLL_GPU_RST; |
| s->regs[REG_INDEX(REG_PLL_PERIPH1)] = REG_PLL_PERIPH1_RST; |
| s->regs[REG_INDEX(REG_PLL_DE)] = REG_PLL_DE_RST; |
| s->regs[REG_INDEX(REG_CPUX_AXI)] = REG_CPUX_AXI_RST; |
| s->regs[REG_INDEX(REG_APB1)] = REG_APB1_RST; |
| s->regs[REG_INDEX(REG_APB2)] = REG_APB2_RST; |
| s->regs[REG_INDEX(REG_DRAM_CFG)] = REG_DRAM_CFG_RST; |
| s->regs[REG_INDEX(REG_MBUS)] = REG_MBUS_RST; |
| s->regs[REG_INDEX(REG_PLL_TIME0)] = REG_PLL_TIME0_RST; |
| s->regs[REG_INDEX(REG_PLL_TIME1)] = REG_PLL_TIME1_RST; |
| s->regs[REG_INDEX(REG_PLL_CPUX_BIAS)] = REG_PLL_CPUX_BIAS_RST; |
| s->regs[REG_INDEX(REG_PLL_AUDIO_BIAS)] = REG_PLL_AUDIO_BIAS_RST; |
| s->regs[REG_INDEX(REG_PLL_VIDEO_BIAS)] = REG_PLL_VIDEO_BIAS_RST; |
| s->regs[REG_INDEX(REG_PLL_VE_BIAS)] = REG_PLL_VE_BIAS_RST; |
| s->regs[REG_INDEX(REG_PLL_DDR_BIAS)] = REG_PLL_DDR_BIAS_RST; |
| s->regs[REG_INDEX(REG_PLL_PERIPH0_BIAS)] = REG_PLL_PERIPH0_BIAS_RST; |
| s->regs[REG_INDEX(REG_PLL_GPU_BIAS)] = REG_PLL_GPU_BIAS_RST; |
| s->regs[REG_INDEX(REG_PLL_PERIPH1_BIAS)] = REG_PLL_PERIPH1_BIAS_RST; |
| s->regs[REG_INDEX(REG_PLL_DE_BIAS)] = REG_PLL_DE_BIAS_RST; |
| s->regs[REG_INDEX(REG_PLL_CPUX_TUNING)] = REG_PLL_CPUX_TUNING_RST; |
| s->regs[REG_INDEX(REG_PLL_DDR_TUNING)] = REG_PLL_DDR_TUNING_RST; |
| } |
| |
| static void allwinner_h3_ccu_init(Object *obj) |
| { |
| SysBusDevice *sbd = SYS_BUS_DEVICE(obj); |
| AwH3ClockCtlState *s = AW_H3_CCU(obj); |
| |
| /* Memory mapping */ |
| memory_region_init_io(&s->iomem, OBJECT(s), &allwinner_h3_ccu_ops, s, |
| TYPE_AW_H3_CCU, AW_H3_CCU_IOSIZE); |
| sysbus_init_mmio(sbd, &s->iomem); |
| } |
| |
| static const VMStateDescription allwinner_h3_ccu_vmstate = { |
| .name = "allwinner-h3-ccu", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .fields = (VMStateField[]) { |
| VMSTATE_UINT32_ARRAY(regs, AwH3ClockCtlState, AW_H3_CCU_REGS_NUM), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static void allwinner_h3_ccu_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| dc->reset = allwinner_h3_ccu_reset; |
| dc->vmsd = &allwinner_h3_ccu_vmstate; |
| } |
| |
| static const TypeInfo allwinner_h3_ccu_info = { |
| .name = TYPE_AW_H3_CCU, |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_init = allwinner_h3_ccu_init, |
| .instance_size = sizeof(AwH3ClockCtlState), |
| .class_init = allwinner_h3_ccu_class_init, |
| }; |
| |
| static void allwinner_h3_ccu_register(void) |
| { |
| type_register_static(&allwinner_h3_ccu_info); |
| } |
| |
| type_init(allwinner_h3_ccu_register) |