LXR qemu/hw/misc/exynos4210

   1/*
   2 *  Exynos4210 Power Management Unit (PMU) Emulation
   3 *
   4 *  Copyright (C) 2011 Samsung Electronics Co Ltd.
   5 *    Maksim Kozlov <m.kozlov@samsung.com>
   6 *
   7 *  This program is free software; you can redistribute it and/or modify it
   8 *  under the terms of the GNU General Public License as published by the
   9 *  Free Software Foundation; either version 2 of the License, or
  10 *  (at your option) any later version.
  11 *
  12 *  This program is distributed in the hope that it will be useful, but WITHOUT
  13 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 *  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  15 *  for more details.
  16 *
  17 *  You should have received a copy of the GNU General Public License along
  18 *  with this program; if not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21/*
  22 * This model implements PMU registers just as a bulk of memory. Currently,
  23 * the only reason this device exists is that secondary CPU boot loader
  24 * uses PMU INFORM5 register as a holding pen.
  25 */
  26
  27#include "qemu/osdep.h"
  28#include "hw/sysbus.h"
  29#include "sysemu/sysemu.h"
  30
  31#ifndef DEBUG_PMU
  32#define DEBUG_PMU           0
  33#endif
  34
  35#ifndef DEBUG_PMU_EXTEND
  36#define DEBUG_PMU_EXTEND    0
  37#endif
  38
  39#if DEBUG_PMU
  40#define  PRINT_DEBUG(fmt, args...)  \
  41        do { \
  42            fprintf(stderr, "  [%s:%d]   "fmt, __func__, __LINE__, ##args); \
  43        } while (0)
  44
  45#if DEBUG_PMU_EXTEND
  46#define  PRINT_DEBUG_EXTEND(fmt, args...) \
  47        do { \
  48            fprintf(stderr, "  [%s:%d]   "fmt, __func__, __LINE__, ##args); \
  49        } while (0)
  50#else
  51#define  PRINT_DEBUG_EXTEND(fmt, args...)  do {} while (0)
  52#endif /* EXTEND */
  53
  54#else
  55#define  PRINT_DEBUG(fmt, args...)   do {} while (0)
  56#define  PRINT_DEBUG_EXTEND(fmt, args...)  do {} while (0)
  57#endif
  58
  59/*
  60 *  Offsets for PMU registers
  61 */
  62#define OM_STAT                  0x0000 /* OM status register */
  63#define RTC_CLKO_SEL             0x000C /* Controls RTCCLKOUT */
  64#define GNSS_RTC_OUT_CTRL        0x0010 /* Controls GNSS_RTC_OUT */
  65/* Decides whether system-level low-power mode is used. */
  66#define SYSTEM_POWER_DOWN_CTRL   0x0200
  67/* Sets control options for CENTRAL_SEQ */
  68#define SYSTEM_POWER_DOWN_OPTION 0x0208
  69#define SWRESET                  0x0400 /* Generate software reset */
  70#define RST_STAT                 0x0404 /* Reset status register */
  71#define WAKEUP_STAT              0x0600 /* Wakeup status register  */
  72#define EINT_WAKEUP_MASK         0x0604 /* Configure External INTerrupt mask */
  73#define WAKEUP_MASK              0x0608 /* Configure wakeup source mask */
  74#define HDMI_PHY_CONTROL         0x0700 /* HDMI PHY control register */
  75#define USBDEVICE_PHY_CONTROL    0x0704 /* USB Device PHY control register */
  76#define USBHOST_PHY_CONTROL      0x0708 /* USB HOST PHY control register */
  77#define DAC_PHY_CONTROL          0x070C /* DAC control register  */
  78#define MIPI_PHY0_CONTROL        0x0710 /* MIPI PHY control register */
  79#define MIPI_PHY1_CONTROL        0x0714 /* MIPI PHY control register */
  80#define ADC_PHY_CONTROL          0x0718 /* TS-ADC control register */
  81#define PCIe_PHY_CONTROL         0x071C /* TS-PCIe control register */
  82#define SATA_PHY_CONTROL         0x0720 /* TS-SATA control register */
  83#define INFORM0                  0x0800 /* Information register 0  */
  84#define INFORM1                  0x0804 /* Information register 1  */
  85#define INFORM2                  0x0808 /* Information register 2  */
  86#define INFORM3                  0x080C /* Information register 3  */
  87#define INFORM4                  0x0810 /* Information register 4  */
  88#define INFORM5                  0x0814 /* Information register 5  */
  89#define INFORM6                  0x0818 /* Information register 6  */
  90#define INFORM7                  0x081C /* Information register 7  */
  91#define PMU_DEBUG                0x0A00 /* PMU debug register */
  92/* Registers to set system-level low-power option */
  93#define ARM_CORE0_SYS_PWR_REG              0x1000
  94#define ARM_CORE1_SYS_PWR_REG              0x1010
  95#define ARM_COMMON_SYS_PWR_REG             0x1080
  96#define ARM_CPU_L2_0_SYS_PWR_REG           0x10C0
  97#define ARM_CPU_L2_1_SYS_PWR_REG           0x10C4
  98#define CMU_ACLKSTOP_SYS_PWR_REG           0x1100
  99#define CMU_SCLKSTOP_SYS_PWR_REG           0x1104
 100#define CMU_RESET_SYS_PWR_REG              0x110C
 101#define APLL_SYSCLK_SYS_PWR_REG            0x1120
 102#define MPLL_SYSCLK_SYS_PWR_REG            0x1124
 103#define VPLL_SYSCLK_SYS_PWR_REG            0x1128
 104#define EPLL_SYSCLK_SYS_PWR_REG            0x112C
 105#define CMU_CLKSTOP_GPS_ALIVE_SYS_PWR_REG  0x1138
 106#define CMU_RESET_GPS_ALIVE_SYS_PWR_REG    0x113C
 107#define CMU_CLKSTOP_CAM_SYS_PWR_REG        0x1140
 108#define CMU_CLKSTOP_TV_SYS_PWR_REG         0x1144
 109#define CMU_CLKSTOP_MFC_SYS_PWR_REG        0x1148
 110#define CMU_CLKSTOP_G3D_SYS_PWR_REG        0x114C
 111#define CMU_CLKSTOP_LCD0_SYS_PWR_REG       0x1150
 112#define CMU_CLKSTOP_LCD1_SYS_PWR_REG       0x1154
 113#define CMU_CLKSTOP_MAUDIO_SYS_PWR_REG     0x1158
 114#define CMU_CLKSTOP_GPS_SYS_PWR_REG        0x115C
 115#define CMU_RESET_CAM_SYS_PWR_REG          0x1160
 116#define CMU_RESET_TV_SYS_PWR_REG           0x1164
 117#define CMU_RESET_MFC_SYS_PWR_REG          0x1168
 118#define CMU_RESET_G3D_SYS_PWR_REG          0x116C
 119#define CMU_RESET_LCD0_SYS_PWR_REG         0x1170
 120#define CMU_RESET_LCD1_SYS_PWR_REG         0x1174
 121#define CMU_RESET_MAUDIO_SYS_PWR_REG       0x1178
 122#define CMU_RESET_GPS_SYS_PWR_REG          0x117C
 123#define TOP_BUS_SYS_PWR_REG                0x1180
 124#define TOP_RETENTION_SYS_PWR_REG          0x1184
 125#define TOP_PWR_SYS_PWR_REG                0x1188
 126#define LOGIC_RESET_SYS_PWR_REG            0x11A0
 127#define OneNANDXL_MEM_SYS_PWR_REG          0x11C0
 128#define MODEMIF_MEM_SYS_PWR_REG            0x11C4
 129#define USBDEVICE_MEM_SYS_PWR_REG          0x11CC
 130#define SDMMC_MEM_SYS_PWR_REG              0x11D0
 131#define CSSYS_MEM_SYS_PWR_REG              0x11D4
 132#define SECSS_MEM_SYS_PWR_REG              0x11D8
 133#define PCIe_MEM_SYS_PWR_REG               0x11E0
 134#define SATA_MEM_SYS_PWR_REG               0x11E4
 135#define PAD_RETENTION_DRAM_SYS_PWR_REG     0x1200
 136#define PAD_RETENTION_MAUDIO_SYS_PWR_REG   0x1204
 137#define PAD_RETENTION_GPIO_SYS_PWR_REG     0x1220
 138#define PAD_RETENTION_UART_SYS_PWR_REG     0x1224
 139#define PAD_RETENTION_MMCA_SYS_PWR_REG     0x1228
 140#define PAD_RETENTION_MMCB_SYS_PWR_REG     0x122C
 141#define PAD_RETENTION_EBIA_SYS_PWR_REG     0x1230
 142#define PAD_RETENTION_EBIB_SYS_PWR_REG     0x1234
 143#define PAD_ISOLATION_SYS_PWR_REG          0x1240
 144#define PAD_ALV_SEL_SYS_PWR_REG            0x1260
 145#define XUSBXTI_SYS_PWR_REG                0x1280
 146#define XXTI_SYS_PWR_REG                   0x1284
 147#define EXT_REGULATOR_SYS_PWR_REG          0x12C0
 148#define GPIO_MODE_SYS_PWR_REG              0x1300
 149#define GPIO_MODE_MAUDIO_SYS_PWR_REG       0x1340
 150#define CAM_SYS_PWR_REG                    0x1380
 151#define TV_SYS_PWR_REG                     0x1384
 152#define MFC_SYS_PWR_REG                    0x1388
 153#define G3D_SYS_PWR_REG                    0x138C
 154#define LCD0_SYS_PWR_REG                   0x1390
 155#define LCD1_SYS_PWR_REG                   0x1394
 156#define MAUDIO_SYS_PWR_REG                 0x1398
 157#define GPS_SYS_PWR_REG                    0x139C
 158#define GPS_ALIVE_SYS_PWR_REG              0x13A0
 159#define ARM_CORE0_CONFIGURATION 0x2000 /* Configure power mode of ARM_CORE0 */
 160#define ARM_CORE0_STATUS        0x2004 /* Check power mode of ARM_CORE0 */
 161#define ARM_CORE0_OPTION        0x2008 /* Sets control options for ARM_CORE0 */
 162#define ARM_CORE1_CONFIGURATION 0x2080 /* Configure power mode of ARM_CORE1 */
 163#define ARM_CORE1_STATUS        0x2084 /* Check power mode of ARM_CORE1 */
 164#define ARM_CORE1_OPTION        0x2088 /* Sets control options for ARM_CORE0 */
 165#define ARM_COMMON_OPTION       0x2408 /* Sets control options for ARM_COMMON */
 166/* Configure power mode of ARM_CPU_L2_0 */
 167#define ARM_CPU_L2_0_CONFIGURATION 0x2600
 168#define ARM_CPU_L2_0_STATUS        0x2604 /* Check power mode of ARM_CPU_L2_0 */
 169/* Configure power mode of ARM_CPU_L2_1 */
 170#define ARM_CPU_L2_1_CONFIGURATION 0x2620
 171#define ARM_CPU_L2_1_STATUS        0x2624 /* Check power mode of ARM_CPU_L2_1 */
 172/* Sets control options for PAD_RETENTION_MAUDIO */
 173#define PAD_RETENTION_MAUDIO_OPTION 0x3028
 174/* Sets control options for PAD_RETENTION_GPIO */
 175#define PAD_RETENTION_GPIO_OPTION   0x3108
 176/* Sets control options for PAD_RETENTION_UART */
 177#define PAD_RETENTION_UART_OPTION   0x3128
 178/* Sets control options for PAD_RETENTION_MMCA */
 179#define PAD_RETENTION_MMCA_OPTION   0x3148
 180/* Sets control options for PAD_RETENTION_MMCB */
 181#define PAD_RETENTION_MMCB_OPTION   0x3168
 182/* Sets control options for PAD_RETENTION_EBIA */
 183#define PAD_RETENTION_EBIA_OPTION   0x3188
 184/* Sets control options for PAD_RETENTION_EBIB */
 185#define PAD_RETENTION_EBIB_OPTION   0x31A8
 186#define PS_HOLD_CONTROL         0x330C /* PS_HOLD control register */
 187#define XUSBXTI_CONFIGURATION   0x3400 /* Configure the pad of XUSBXTI */
 188#define XUSBXTI_STATUS          0x3404 /* Check the pad of XUSBXTI */
 189/* Sets time required for XUSBXTI to be stabilized */
 190#define XUSBXTI_DURATION        0x341C
 191#define XXTI_CONFIGURATION      0x3420 /* Configure the pad of XXTI */
 192#define XXTI_STATUS             0x3424 /* Check the pad of XXTI */
 193/* Sets time required for XXTI to be stabilized */
 194#define XXTI_DURATION           0x343C
 195/* Sets time required for EXT_REGULATOR to be stabilized */
 196#define EXT_REGULATOR_DURATION  0x361C
 197#define CAM_CONFIGURATION       0x3C00 /* Configure power mode of CAM */
 198#define CAM_STATUS              0x3C04 /* Check power mode of CAM */
 199#define CAM_OPTION              0x3C08 /* Sets control options for CAM */
 200#define TV_CONFIGURATION        0x3C20 /* Configure power mode of TV */
 201#define TV_STATUS               0x3C24 /* Check power mode of TV */
 202#define TV_OPTION               0x3C28 /* Sets control options for TV */
 203#define MFC_CONFIGURATION       0x3C40 /* Configure power mode of MFC */
 204#define MFC_STATUS              0x3C44 /* Check power mode of MFC */
 205#define MFC_OPTION              0x3C48 /* Sets control options for MFC */
 206#define G3D_CONFIGURATION       0x3C60 /* Configure power mode of G3D */
 207#define G3D_STATUS              0x3C64 /* Check power mode of G3D */
 208#define G3D_OPTION              0x3C68 /* Sets control options for G3D */
 209#define LCD0_CONFIGURATION      0x3C80 /* Configure power mode of LCD0 */
 210#define LCD0_STATUS             0x3C84 /* Check power mode of LCD0 */
 211#define LCD0_OPTION             0x3C88 /* Sets control options for LCD0 */
 212#define LCD1_CONFIGURATION      0x3CA0 /* Configure power mode of LCD1 */
 213#define LCD1_STATUS             0x3CA4 /* Check power mode of LCD1 */
 214#define LCD1_OPTION             0x3CA8 /* Sets control options for LCD1 */
 215#define GPS_CONFIGURATION       0x3CE0 /* Configure power mode of GPS */
 216#define GPS_STATUS              0x3CE4 /* Check power mode of GPS */
 217#define GPS_OPTION              0x3CE8 /* Sets control options for GPS */
 218#define GPS_ALIVE_CONFIGURATION 0x3D00 /* Configure power mode of GPS */
 219#define GPS_ALIVE_STATUS        0x3D04 /* Check power mode of GPS */
 220#define GPS_ALIVE_OPTION        0x3D08 /* Sets control options for GPS */
 221
 222#define EXYNOS4210_PMU_REGS_MEM_SIZE 0x3d0c
 223
 224typedef struct Exynos4210PmuReg {
 225    const char  *name; /* for debug only */
 226    uint32_t     offset;
 227    uint32_t     reset_value;
 228} Exynos4210PmuReg;
 229
 230static const Exynos4210PmuReg exynos4210_pmu_regs[] = {
 231    {"OM_STAT", OM_STAT, 0x00000000},
 232    {"RTC_CLKO_SEL", RTC_CLKO_SEL, 0x00000000},
 233    {"GNSS_RTC_OUT_CTRL", GNSS_RTC_OUT_CTRL, 0x00000001},
 234    {"SYSTEM_POWER_DOWN_CTRL", SYSTEM_POWER_DOWN_CTRL, 0x00010000},
 235    {"SYSTEM_POWER_DOWN_OPTION", SYSTEM_POWER_DOWN_OPTION, 0x03030000},
 236    {"SWRESET", SWRESET, 0x00000000},
 237    {"RST_STAT", RST_STAT, 0x00000000},
 238    {"WAKEUP_STAT", WAKEUP_STAT, 0x00000000},
 239    {"EINT_WAKEUP_MASK", EINT_WAKEUP_MASK, 0x00000000},
 240    {"WAKEUP_MASK", WAKEUP_MASK, 0x00000000},
 241    {"HDMI_PHY_CONTROL", HDMI_PHY_CONTROL, 0x00960000},
 242    {"USBDEVICE_PHY_CONTROL", USBDEVICE_PHY_CONTROL, 0x00000000},
 243    {"USBHOST_PHY_CONTROL", USBHOST_PHY_CONTROL, 0x00000000},
 244    {"DAC_PHY_CONTROL", DAC_PHY_CONTROL, 0x00000000},
 245    {"MIPI_PHY0_CONTROL", MIPI_PHY0_CONTROL, 0x00000000},
 246    {"MIPI_PHY1_CONTROL", MIPI_PHY1_CONTROL, 0x00000000},
 247    {"ADC_PHY_CONTROL", ADC_PHY_CONTROL, 0x00000001},
 248    {"PCIe_PHY_CONTROL", PCIe_PHY_CONTROL, 0x00000000},
 249    {"SATA_PHY_CONTROL", SATA_PHY_CONTROL, 0x00000000},
 250    {"INFORM0", INFORM0, 0x00000000},
 251    {"INFORM1", INFORM1, 0x00000000},
 252    {"INFORM2", INFORM2, 0x00000000},
 253    {"INFORM3", INFORM3, 0x00000000},
 254    {"INFORM4", INFORM4, 0x00000000},
 255    {"INFORM5", INFORM5, 0x00000000},
 256    {"INFORM6", INFORM6, 0x00000000},
 257    {"INFORM7", INFORM7, 0x00000000},
 258    {"PMU_DEBUG", PMU_DEBUG, 0x00000000},
 259    {"ARM_CORE0_SYS_PWR_REG", ARM_CORE0_SYS_PWR_REG, 0xFFFFFFFF},
 260    {"ARM_CORE1_SYS_PWR_REG", ARM_CORE1_SYS_PWR_REG, 0xFFFFFFFF},
 261    {"ARM_COMMON_SYS_PWR_REG", ARM_COMMON_SYS_PWR_REG, 0xFFFFFFFF},
 262    {"ARM_CPU_L2_0_SYS_PWR_REG", ARM_CPU_L2_0_SYS_PWR_REG, 0xFFFFFFFF},
 263    {"ARM_CPU_L2_1_SYS_PWR_REG", ARM_CPU_L2_1_SYS_PWR_REG, 0xFFFFFFFF},
 264    {"CMU_ACLKSTOP_SYS_PWR_REG", CMU_ACLKSTOP_SYS_PWR_REG, 0xFFFFFFFF},
 265    {"CMU_SCLKSTOP_SYS_PWR_REG", CMU_SCLKSTOP_SYS_PWR_REG, 0xFFFFFFFF},
 266    {"CMU_RESET_SYS_PWR_REG", CMU_RESET_SYS_PWR_REG, 0xFFFFFFFF},
 267    {"APLL_SYSCLK_SYS_PWR_REG", APLL_SYSCLK_SYS_PWR_REG, 0xFFFFFFFF},
 268    {"MPLL_SYSCLK_SYS_PWR_REG", MPLL_SYSCLK_SYS_PWR_REG, 0xFFFFFFFF},
 269    {"VPLL_SYSCLK_SYS_PWR_REG", VPLL_SYSCLK_SYS_PWR_REG, 0xFFFFFFFF},
 270    {"EPLL_SYSCLK_SYS_PWR_REG", EPLL_SYSCLK_SYS_PWR_REG, 0xFFFFFFFF},
 271    {"CMU_CLKSTOP_GPS_ALIVE_SYS_PWR_REG", CMU_CLKSTOP_GPS_ALIVE_SYS_PWR_REG,
 272            0xFFFFFFFF},
 273    {"CMU_RESET_GPS_ALIVE_SYS_PWR_REG", CMU_RESET_GPS_ALIVE_SYS_PWR_REG,
 274            0xFFFFFFFF},
 275    {"CMU_CLKSTOP_CAM_SYS_PWR_REG", CMU_CLKSTOP_CAM_SYS_PWR_REG, 0xFFFFFFFF},
 276    {"CMU_CLKSTOP_TV_SYS_PWR_REG", CMU_CLKSTOP_TV_SYS_PWR_REG, 0xFFFFFFFF},
 277    {"CMU_CLKSTOP_MFC_SYS_PWR_REG", CMU_CLKSTOP_MFC_SYS_PWR_REG, 0xFFFFFFFF},
 278    {"CMU_CLKSTOP_G3D_SYS_PWR_REG", CMU_CLKSTOP_G3D_SYS_PWR_REG, 0xFFFFFFFF},
 279    {"CMU_CLKSTOP_LCD0_SYS_PWR_REG", CMU_CLKSTOP_LCD0_SYS_PWR_REG, 0xFFFFFFFF},
 280    {"CMU_CLKSTOP_LCD1_SYS_PWR_REG", CMU_CLKSTOP_LCD1_SYS_PWR_REG, 0xFFFFFFFF},
 281    {"CMU_CLKSTOP_MAUDIO_SYS_PWR_REG", CMU_CLKSTOP_MAUDIO_SYS_PWR_REG,
 282            0xFFFFFFFF},
 283    {"CMU_CLKSTOP_GPS_SYS_PWR_REG", CMU_CLKSTOP_GPS_SYS_PWR_REG, 0xFFFFFFFF},
 284    {"CMU_RESET_CAM_SYS_PWR_REG", CMU_RESET_CAM_SYS_PWR_REG, 0xFFFFFFFF},
 285    {"CMU_RESET_TV_SYS_PWR_REG", CMU_RESET_TV_SYS_PWR_REG, 0xFFFFFFFF},
 286    {"CMU_RESET_MFC_SYS_PWR_REG", CMU_RESET_MFC_SYS_PWR_REG, 0xFFFFFFFF},
 287    {"CMU_RESET_G3D_SYS_PWR_REG", CMU_RESET_G3D_SYS_PWR_REG, 0xFFFFFFFF},
 288    {"CMU_RESET_LCD0_SYS_PWR_REG", CMU_RESET_LCD0_SYS_PWR_REG, 0xFFFFFFFF},
 289    {"CMU_RESET_LCD1_SYS_PWR_REG", CMU_RESET_LCD1_SYS_PWR_REG, 0xFFFFFFFF},
 290    {"CMU_RESET_MAUDIO_SYS_PWR_REG", CMU_RESET_MAUDIO_SYS_PWR_REG, 0xFFFFFFFF},
 291    {"CMU_RESET_GPS_SYS_PWR_REG", CMU_RESET_GPS_SYS_PWR_REG, 0xFFFFFFFF},
 292    {"TOP_BUS_SYS_PWR_REG", TOP_BUS_SYS_PWR_REG, 0xFFFFFFFF},
 293    {"TOP_RETENTION_SYS_PWR_REG", TOP_RETENTION_SYS_PWR_REG, 0xFFFFFFFF},
 294    {"TOP_PWR_SYS_PWR_REG", TOP_PWR_SYS_PWR_REG, 0xFFFFFFFF},
 295    {"LOGIC_RESET_SYS_PWR_REG", LOGIC_RESET_SYS_PWR_REG, 0xFFFFFFFF},
 296    {"OneNANDXL_MEM_SYS_PWR_REG", OneNANDXL_MEM_SYS_PWR_REG, 0xFFFFFFFF},
 297    {"MODEMIF_MEM_SYS_PWR_REG", MODEMIF_MEM_SYS_PWR_REG, 0xFFFFFFFF},
 298    {"USBDEVICE_MEM_SYS_PWR_REG", USBDEVICE_MEM_SYS_PWR_REG, 0xFFFFFFFF},
 299    {"SDMMC_MEM_SYS_PWR_REG", SDMMC_MEM_SYS_PWR_REG, 0xFFFFFFFF},
 300    {"CSSYS_MEM_SYS_PWR_REG", CSSYS_MEM_SYS_PWR_REG, 0xFFFFFFFF},
 301    {"SECSS_MEM_SYS_PWR_REG", SECSS_MEM_SYS_PWR_REG, 0xFFFFFFFF},
 302    {"PCIe_MEM_SYS_PWR_REG", PCIe_MEM_SYS_PWR_REG, 0xFFFFFFFF},
 303    {"SATA_MEM_SYS_PWR_REG", SATA_MEM_SYS_PWR_REG, 0xFFFFFFFF},
 304    {"PAD_RETENTION_DRAM_SYS_PWR_REG", PAD_RETENTION_DRAM_SYS_PWR_REG,
 305            0xFFFFFFFF},
 306    {"PAD_RETENTION_MAUDIO_SYS_PWR_REG", PAD_RETENTION_MAUDIO_SYS_PWR_REG,
 307            0xFFFFFFFF},
 308    {"PAD_RETENTION_GPIO_SYS_PWR_REG", PAD_RETENTION_GPIO_SYS_PWR_REG,
 309            0xFFFFFFFF},
 310    {"PAD_RETENTION_UART_SYS_PWR_REG", PAD_RETENTION_UART_SYS_PWR_REG,
 311            0xFFFFFFFF},
 312    {"PAD_RETENTION_MMCA_SYS_PWR_REG", PAD_RETENTION_MMCA_SYS_PWR_REG,
 313            0xFFFFFFFF},
 314    {"PAD_RETENTION_MMCB_SYS_PWR_REG", PAD_RETENTION_MMCB_SYS_PWR_REG,
 315            0xFFFFFFFF},
 316    {"PAD_RETENTION_EBIA_SYS_PWR_REG", PAD_RETENTION_EBIA_SYS_PWR_REG,
 317            0xFFFFFFFF},
 318    {"PAD_RETENTION_EBIB_SYS_PWR_REG", PAD_RETENTION_EBIB_SYS_PWR_REG,
 319            0xFFFFFFFF},
 320    {"PAD_ISOLATION_SYS_PWR_REG", PAD_ISOLATION_SYS_PWR_REG, 0xFFFFFFFF},
 321    {"PAD_ALV_SEL_SYS_PWR_REG", PAD_ALV_SEL_SYS_PWR_REG, 0xFFFFFFFF},
 322    {"XUSBXTI_SYS_PWR_REG", XUSBXTI_SYS_PWR_REG, 0xFFFFFFFF},
 323    {"XXTI_SYS_PWR_REG", XXTI_SYS_PWR_REG, 0xFFFFFFFF},
 324    {"EXT_REGULATOR_SYS_PWR_REG", EXT_REGULATOR_SYS_PWR_REG, 0xFFFFFFFF},
 325    {"GPIO_MODE_SYS_PWR_REG", GPIO_MODE_SYS_PWR_REG, 0xFFFFFFFF},
 326    {"GPIO_MODE_MAUDIO_SYS_PWR_REG", GPIO_MODE_MAUDIO_SYS_PWR_REG, 0xFFFFFFFF},
 327    {"CAM_SYS_PWR_REG", CAM_SYS_PWR_REG, 0xFFFFFFFF},
 328    {"TV_SYS_PWR_REG", TV_SYS_PWR_REG, 0xFFFFFFFF},
 329    {"MFC_SYS_PWR_REG", MFC_SYS_PWR_REG, 0xFFFFFFFF},
 330    {"G3D_SYS_PWR_REG", G3D_SYS_PWR_REG, 0xFFFFFFFF},
 331    {"LCD0_SYS_PWR_REG", LCD0_SYS_PWR_REG, 0xFFFFFFFF},
 332    {"LCD1_SYS_PWR_REG", LCD1_SYS_PWR_REG, 0xFFFFFFFF},
 333    {"MAUDIO_SYS_PWR_REG", MAUDIO_SYS_PWR_REG, 0xFFFFFFFF},
 334    {"GPS_SYS_PWR_REG", GPS_SYS_PWR_REG, 0xFFFFFFFF},
 335    {"GPS_ALIVE_SYS_PWR_REG", GPS_ALIVE_SYS_PWR_REG, 0xFFFFFFFF},
 336    {"ARM_CORE0_CONFIGURATION", ARM_CORE0_CONFIGURATION, 0x00000003},
 337    {"ARM_CORE0_STATUS", ARM_CORE0_STATUS, 0x00030003},
 338    {"ARM_CORE0_OPTION", ARM_CORE0_OPTION, 0x01010001},
 339    {"ARM_CORE1_CONFIGURATION", ARM_CORE1_CONFIGURATION, 0x00000003},
 340    {"ARM_CORE1_STATUS", ARM_CORE1_STATUS, 0x00030003},
 341    {"ARM_CORE1_OPTION", ARM_CORE1_OPTION, 0x01010001},
 342    {"ARM_COMMON_OPTION", ARM_COMMON_OPTION, 0x00000001},
 343    {"ARM_CPU_L2_0_CONFIGURATION", ARM_CPU_L2_0_CONFIGURATION, 0x00000003},
 344    {"ARM_CPU_L2_0_STATUS", ARM_CPU_L2_0_STATUS, 0x00000003},
 345    {"ARM_CPU_L2_1_CONFIGURATION", ARM_CPU_L2_1_CONFIGURATION, 0x00000003},
 346    {"ARM_CPU_L2_1_STATUS", ARM_CPU_L2_1_STATUS, 0x00000003},
 347    {"PAD_RETENTION_MAUDIO_OPTION", PAD_RETENTION_MAUDIO_OPTION, 0x00000000},
 348    {"PAD_RETENTION_GPIO_OPTION", PAD_RETENTION_GPIO_OPTION, 0x00000000},
 349    {"PAD_RETENTION_UART_OPTION", PAD_RETENTION_UART_OPTION, 0x00000000},
 350    {"PAD_RETENTION_MMCA_OPTION", PAD_RETENTION_MMCA_OPTION, 0x00000000},
 351    {"PAD_RETENTION_MMCB_OPTION", PAD_RETENTION_MMCB_OPTION, 0x00000000},
 352    {"PAD_RETENTION_EBIA_OPTION", PAD_RETENTION_EBIA_OPTION, 0x00000000},
 353    {"PAD_RETENTION_EBIB_OPTION", PAD_RETENTION_EBIB_OPTION, 0x00000000},
 354    /*
 355     * PS_HOLD_CONTROL: reset value and manually toggle high the DATA bit.
 356     * DATA bit high, set usually by bootloader, keeps system on.
 357     */
 358    {"PS_HOLD_CONTROL", PS_HOLD_CONTROL, 0x00005200 | BIT(8)},
 359    {"XUSBXTI_CONFIGURATION", XUSBXTI_CONFIGURATION, 0x00000001},
 360    {"XUSBXTI_STATUS", XUSBXTI_STATUS, 0x00000001},
 361    {"XUSBXTI_DURATION", XUSBXTI_DURATION, 0xFFF00000},
 362    {"XXTI_CONFIGURATION", XXTI_CONFIGURATION, 0x00000001},
 363    {"XXTI_STATUS", XXTI_STATUS, 0x00000001},
 364    {"XXTI_DURATION", XXTI_DURATION, 0xFFF00000},
 365    {"EXT_REGULATOR_DURATION", EXT_REGULATOR_DURATION, 0xFFF03FFF},
 366    {"CAM_CONFIGURATION", CAM_CONFIGURATION, 0x00000007},
 367    {"CAM_STATUS", CAM_STATUS, 0x00060007},
 368    {"CAM_OPTION", CAM_OPTION, 0x00000001},
 369    {"TV_CONFIGURATION", TV_CONFIGURATION, 0x00000007},
 370    {"TV_STATUS", TV_STATUS, 0x00060007},
 371    {"TV_OPTION", TV_OPTION, 0x00000001},
 372    {"MFC_CONFIGURATION", MFC_CONFIGURATION, 0x00000007},
 373    {"MFC_STATUS", MFC_STATUS, 0x00060007},
 374    {"MFC_OPTION", MFC_OPTION, 0x00000001},
 375    {"G3D_CONFIGURATION", G3D_CONFIGURATION, 0x00000007},
 376    {"G3D_STATUS", G3D_STATUS, 0x00060007},
 377    {"G3D_OPTION", G3D_OPTION, 0x00000001},
 378    {"LCD0_CONFIGURATION", LCD0_CONFIGURATION, 0x00000007},
 379    {"LCD0_STATUS", LCD0_STATUS, 0x00060007},
 380    {"LCD0_OPTION", LCD0_OPTION, 0x00000001},
 381    {"LCD1_CONFIGURATION", LCD1_CONFIGURATION, 0x00000007},
 382    {"LCD1_STATUS", LCD1_STATUS, 0x00060007},
 383    {"LCD1_OPTION", LCD1_OPTION, 0x00000001},
 384    {"GPS_CONFIGURATION", GPS_CONFIGURATION, 0x00000007},
 385    {"GPS_STATUS", GPS_STATUS, 0x00060007},
 386    {"GPS_OPTION", GPS_OPTION, 0x00000001},
 387    {"GPS_ALIVE_CONFIGURATION", GPS_ALIVE_CONFIGURATION, 0x00000007},
 388    {"GPS_ALIVE_STATUS", GPS_ALIVE_STATUS, 0x00060007},
 389    {"GPS_ALIVE_OPTION", GPS_ALIVE_OPTION, 0x00000001},
 390};
 391
 392#define PMU_NUM_OF_REGISTERS ARRAY_SIZE(exynos4210_pmu_regs)
 393
 394#define TYPE_EXYNOS4210_PMU "exynos4210.pmu"
 395#define EXYNOS4210_PMU(obj) \
 396    OBJECT_CHECK(Exynos4210PmuState, (obj), TYPE_EXYNOS4210_PMU)
 397
 398typedef struct Exynos4210PmuState {
 399    SysBusDevice parent_obj;
 400
 401    MemoryRegion iomem;
 402    uint32_t reg[PMU_NUM_OF_REGISTERS];
 403} Exynos4210PmuState;
 404
 405static void exynos4210_pmu_poweroff(void)
 406{
 407    PRINT_DEBUG("QEMU PMU: PS_HOLD bit down, powering off\n");
 408    qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
 409}
 410
 411static uint64_t exynos4210_pmu_read(void *opaque, hwaddr offset,
 412                                    unsigned size)
 413{
 414    Exynos4210PmuState *s = (Exynos4210PmuState *)opaque;
 415    const Exynos4210PmuReg *reg_p = exynos4210_pmu_regs;
 416    unsigned int i;
 417
 418    for (i = 0; i < PMU_NUM_OF_REGISTERS; i++) {
 419        if (reg_p->offset == offset) {
 420            PRINT_DEBUG_EXTEND("%s [0x%04x] -> 0x%04x\n", reg_p->name,
 421                                   (uint32_t)offset, s->reg[i]);
 422            return s->reg[i];
 423        }
 424        reg_p++;
 425    }
 426    PRINT_DEBUG("QEMU PMU ERROR: bad read offset 0x%04x\n", (uint32_t)offset);
 427    return 0;
 428}
 429
 430static void exynos4210_pmu_write(void *opaque, hwaddr offset,
 431                                 uint64_t val, unsigned size)
 432{
 433    Exynos4210PmuState *s = (Exynos4210PmuState *)opaque;
 434    const Exynos4210PmuReg *reg_p = exynos4210_pmu_regs;
 435    unsigned int i;
 436
 437    for (i = 0; i < PMU_NUM_OF_REGISTERS; i++) {
 438        if (reg_p->offset == offset) {
 439            PRINT_DEBUG_EXTEND("%s <0x%04x> <- 0x%04x\n", reg_p->name,
 440                    (uint32_t)offset, (uint32_t)val);
 441            s->reg[i] = val;
 442            if ((offset == PS_HOLD_CONTROL) && ((val & BIT(8)) == 0)) {
 443                /*
 444                 * We are interested only in setting data bit
 445                 * of PS_HOLD_CONTROL register to indicate power off request.
 446                 */
 447                exynos4210_pmu_poweroff();
 448            }
 449            return;
 450        }
 451        reg_p++;
 452    }
 453    PRINT_DEBUG("QEMU PMU ERROR: bad write offset 0x%04x\n", (uint32_t)offset);
 454}
 455
 456static const MemoryRegionOps exynos4210_pmu_ops = {
 457    .read = exynos4210_pmu_read,
 458    .write = exynos4210_pmu_write,
 459    .endianness = DEVICE_NATIVE_ENDIAN,
 460    .valid = {
 461        .min_access_size = 4,
 462        .max_access_size = 4,
 463        .unaligned = false
 464    }
 465};
 466
 467static void exynos4210_pmu_reset(DeviceState *dev)
 468{
 469    Exynos4210PmuState *s = EXYNOS4210_PMU(dev);
 470    unsigned i;
 471
 472    /* Set default values for registers */
 473    for (i = 0; i < PMU_NUM_OF_REGISTERS; i++) {
 474        s->reg[i] = exynos4210_pmu_regs[i].reset_value;
 475    }
 476}
 477
 478static void exynos4210_pmu_init(Object *obj)
 479{
 480    Exynos4210PmuState *s = EXYNOS4210_PMU(obj);
 481    SysBusDevice *dev = SYS_BUS_DEVICE(obj);
 482
 483    /* memory mapping */
 484    memory_region_init_io(&s->iomem, obj, &exynos4210_pmu_ops, s,
 485                          "exynos4210.pmu", EXYNOS4210_PMU_REGS_MEM_SIZE);
 486    sysbus_init_mmio(dev, &s->iomem);
 487}
 488
 489static const VMStateDescription exynos4210_pmu_vmstate = {
 490    .name = "exynos4210.pmu",
 491    .version_id = 1,
 492    .minimum_version_id = 1,
 493    .fields = (VMStateField[]) {
 494        VMSTATE_UINT32_ARRAY(reg, Exynos4210PmuState, PMU_NUM_OF_REGISTERS),
 495        VMSTATE_END_OF_LIST()
 496    }
 497};
 498
 499static void exynos4210_pmu_class_init(ObjectClass *klass, void *data)
 500{
 501    DeviceClass *dc = DEVICE_CLASS(klass);
 502
 503    dc->reset = exynos4210_pmu_reset;
 504    dc->vmsd = &exynos4210_pmu_vmstate;
 505}
 506
 507static const TypeInfo exynos4210_pmu_info = {
 508    .name          = TYPE_EXYNOS4210_PMU,
 509    .parent        = TYPE_SYS_BUS_DEVICE,
 510    .instance_size = sizeof(Exynos4210PmuState),
 511    .instance_init = exynos4210_pmu_init,
 512    .class_init    = exynos4210_pmu_class_init,
 513};
 514
 515static void exynos4210_pmu_register(void)
 516{
 517    type_register_static(&exynos4210_pmu_info);
 518}
 519
 520type_init(exynos4210_pmu_register)
 521