|  | /* | 
|  | * 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 "qemu/osdep.h" | 
|  | #include "hw/irq.h" | 
|  | #include "hw/qdev-properties.h" | 
|  | #include "qemu/timer.h" | 
|  | #include "sysemu/runstate.h" | 
|  | #include "qemu/bitops.h" | 
|  | #include "hw/sysbus.h" | 
|  | #include "migration/vmstate.h" | 
|  | #include "hw/arm/primecell.h" | 
|  | #include "qemu/log.h" | 
|  | #include "qemu/module.h" | 
|  | #include "qom/object.h" | 
|  |  | 
|  | #define LOCK_VALUE 0xa05f | 
|  |  | 
|  | #define TYPE_ARM_SYSCTL "realview_sysctl" | 
|  | OBJECT_DECLARE_SIMPLE_TYPE(arm_sysctl_state, ARM_SYSCTL) | 
|  |  | 
|  | struct arm_sysctl_state { | 
|  | SysBusDevice parent_obj; | 
|  |  | 
|  | MemoryRegion iomem; | 
|  | qemu_irq pl110_mux_ctrl; | 
|  |  | 
|  | 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; | 
|  | uint32_t sys_clcd; | 
|  | uint32_t mb_clock[6]; | 
|  | uint32_t *db_clock; | 
|  | uint32_t db_num_vsensors; | 
|  | uint32_t *db_voltage; | 
|  | uint32_t db_num_clocks; | 
|  | uint32_t *db_clock_reset; | 
|  | }; | 
|  |  | 
|  | static const VMStateDescription vmstate_arm_sysctl = { | 
|  | .name = "realview_sysctl", | 
|  | .version_id = 4, | 
|  | .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_UINT32_V(sys_clcd, arm_sysctl_state, 3), | 
|  | VMSTATE_UINT32_ARRAY_V(mb_clock, arm_sysctl_state, 6, 4), | 
|  | VMSTATE_VARRAY_UINT32(db_clock, arm_sysctl_state, db_num_clocks, | 
|  | 4, vmstate_info_uint32, uint32_t), | 
|  | 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 = ARM_SYSCTL(d); | 
|  | int i; | 
|  |  | 
|  | s->leds = 0; | 
|  | s->lockval = 0; | 
|  | s->cfgdata1 = 0; | 
|  | s->cfgdata2 = 0; | 
|  | s->flags = 0; | 
|  | s->resetlevel = 0; | 
|  | /* Motherboard oscillators (in Hz) */ | 
|  | s->mb_clock[0] = 50000000; /* Static memory clock: 50MHz */ | 
|  | s->mb_clock[1] = 23750000; /* motherboard CLCD clock: 23.75MHz */ | 
|  | s->mb_clock[2] = 24000000; /* IO FPGA peripheral clock: 24MHz */ | 
|  | s->mb_clock[3] = 24000000; /* IO FPGA reserved clock: 24MHz */ | 
|  | s->mb_clock[4] = 24000000; /* System bus global clock: 24MHz */ | 
|  | s->mb_clock[5] = 24000000; /* IO FPGA reserved clock: 24MHz */ | 
|  | /* Daughterboard oscillators: reset from property values */ | 
|  | for (i = 0; i < s->db_num_clocks; i++) { | 
|  | s->db_clock[i] = s->db_clock_reset[i]; | 
|  | } | 
|  | if (board_id(s) == BOARD_ID_VEXPRESS) { | 
|  | /* On VExpress this register will RAZ/WI */ | 
|  | s->sys_clcd = 0; | 
|  | } else { | 
|  | /* All others: CLCDID 0x1f, indicating VGA */ | 
|  | s->sys_clcd = 0x1f00; | 
|  | } | 
|  | } | 
|  |  | 
|  | static uint64_t arm_sysctl_read(void *opaque, hwaddr offset, | 
|  | unsigned size) | 
|  | { | 
|  | 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 s->sys_clcd; | 
|  | case 0x54: /* CLCDSER */ | 
|  | return 0; | 
|  | case 0x58: /* BOOTCS */ | 
|  | return 0; | 
|  | case 0x5c: /* 24MHz */ | 
|  | return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), 24000000, | 
|  | NANOSECONDS_PER_SECOND); | 
|  | 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: | 
|  | qemu_log_mask(LOG_GUEST_ERROR, | 
|  | "arm_sysctl_read: Bad register offset 0x%x\n", | 
|  | (int)offset); | 
|  | return 0; | 
|  | } | 
|  | } | 
|  |  | 
|  | /* SYS_CFGCTRL functions */ | 
|  | #define SYS_CFG_OSC 1 | 
|  | #define SYS_CFG_VOLT 2 | 
|  | #define SYS_CFG_AMP 3 | 
|  | #define SYS_CFG_TEMP 4 | 
|  | #define SYS_CFG_RESET 5 | 
|  | #define SYS_CFG_SCC 6 | 
|  | #define SYS_CFG_MUXFPGA 7 | 
|  | #define SYS_CFG_SHUTDOWN 8 | 
|  | #define SYS_CFG_REBOOT 9 | 
|  | #define SYS_CFG_DVIMODE 11 | 
|  | #define SYS_CFG_POWER 12 | 
|  | #define SYS_CFG_ENERGY 13 | 
|  |  | 
|  | /* SYS_CFGCTRL site field values */ | 
|  | #define SYS_CFG_SITE_MB 0 | 
|  | #define SYS_CFG_SITE_DB1 1 | 
|  | #define SYS_CFG_SITE_DB2 2 | 
|  |  | 
|  | /** | 
|  | * vexpress_cfgctrl_read: | 
|  | * @s: arm_sysctl_state pointer | 
|  | * @dcc, @function, @site, @position, @device: split out values from | 
|  | * SYS_CFGCTRL register | 
|  | * @val: pointer to where to put the read data on success | 
|  | * | 
|  | * Handle a VExpress SYS_CFGCTRL register read. On success, return true and | 
|  | * write the read value to *val. On failure, return false (and val may | 
|  | * or may not be written to). | 
|  | */ | 
|  | static bool vexpress_cfgctrl_read(arm_sysctl_state *s, unsigned int dcc, | 
|  | unsigned int function, unsigned int site, | 
|  | unsigned int position, unsigned int device, | 
|  | uint32_t *val) | 
|  | { | 
|  | /* We don't support anything other than DCC 0, board stack position 0 | 
|  | * or sites other than motherboard/daughterboard: | 
|  | */ | 
|  | if (dcc != 0 || position != 0 || | 
|  | (site != SYS_CFG_SITE_MB && site != SYS_CFG_SITE_DB1)) { | 
|  | goto cfgctrl_unimp; | 
|  | } | 
|  |  | 
|  | switch (function) { | 
|  | case SYS_CFG_VOLT: | 
|  | if (site == SYS_CFG_SITE_DB1 && device < s->db_num_vsensors) { | 
|  | *val = s->db_voltage[device]; | 
|  | return true; | 
|  | } | 
|  | if (site == SYS_CFG_SITE_MB && device == 0) { | 
|  | /* There is only one motherboard voltage sensor: | 
|  | * VIO : 3.3V : bus voltage between mother and daughterboard | 
|  | */ | 
|  | *val = 3300000; | 
|  | return true; | 
|  | } | 
|  | break; | 
|  | case SYS_CFG_OSC: | 
|  | if (site == SYS_CFG_SITE_MB && device < ARRAY_SIZE(s->mb_clock)) { | 
|  | /* motherboard clock */ | 
|  | *val = s->mb_clock[device]; | 
|  | return true; | 
|  | } | 
|  | if (site == SYS_CFG_SITE_DB1 && device < s->db_num_clocks) { | 
|  | /* daughterboard clock */ | 
|  | *val = s->db_clock[device]; | 
|  | return true; | 
|  | } | 
|  | break; | 
|  | default: | 
|  | break; | 
|  | } | 
|  |  | 
|  | cfgctrl_unimp: | 
|  | qemu_log_mask(LOG_UNIMP, | 
|  | "arm_sysctl: Unimplemented SYS_CFGCTRL read of function " | 
|  | "0x%x DCC 0x%x site 0x%x position 0x%x device 0x%x\n", | 
|  | function, dcc, site, position, device); | 
|  | return false; | 
|  | } | 
|  |  | 
|  | /** | 
|  | * vexpress_cfgctrl_write: | 
|  | * @s: arm_sysctl_state pointer | 
|  | * @dcc, @function, @site, @position, @device: split out values from | 
|  | * SYS_CFGCTRL register | 
|  | * @val: data to write | 
|  | * | 
|  | * Handle a VExpress SYS_CFGCTRL register write. On success, return true. | 
|  | * On failure, return false. | 
|  | */ | 
|  | static bool vexpress_cfgctrl_write(arm_sysctl_state *s, unsigned int dcc, | 
|  | unsigned int function, unsigned int site, | 
|  | unsigned int position, unsigned int device, | 
|  | uint32_t val) | 
|  | { | 
|  | /* We don't support anything other than DCC 0, board stack position 0 | 
|  | * or sites other than motherboard/daughterboard: | 
|  | */ | 
|  | if (dcc != 0 || position != 0 || | 
|  | (site != SYS_CFG_SITE_MB && site != SYS_CFG_SITE_DB1)) { | 
|  | goto cfgctrl_unimp; | 
|  | } | 
|  |  | 
|  | switch (function) { | 
|  | case SYS_CFG_OSC: | 
|  | if (site == SYS_CFG_SITE_MB && device < ARRAY_SIZE(s->mb_clock)) { | 
|  | /* motherboard clock */ | 
|  | s->mb_clock[device] = val; | 
|  | return true; | 
|  | } | 
|  | if (site == SYS_CFG_SITE_DB1 && device < s->db_num_clocks) { | 
|  | /* daughterboard clock */ | 
|  | s->db_clock[device] = val; | 
|  | return true; | 
|  | } | 
|  | break; | 
|  | case SYS_CFG_MUXFPGA: | 
|  | if (site == SYS_CFG_SITE_MB && device == 0) { | 
|  | /* Select whether video output comes from motherboard | 
|  | * or daughterboard: log and ignore as QEMU doesn't | 
|  | * support this. | 
|  | */ | 
|  | qemu_log_mask(LOG_UNIMP, "arm_sysctl: selection of video output " | 
|  | "not supported, ignoring\n"); | 
|  | return true; | 
|  | } | 
|  | break; | 
|  | case SYS_CFG_SHUTDOWN: | 
|  | if (site == SYS_CFG_SITE_MB && device == 0) { | 
|  | qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); | 
|  | return true; | 
|  | } | 
|  | break; | 
|  | case SYS_CFG_REBOOT: | 
|  | if (site == SYS_CFG_SITE_MB && device == 0) { | 
|  | qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); | 
|  | return true; | 
|  | } | 
|  | break; | 
|  | case SYS_CFG_DVIMODE: | 
|  | if (site == SYS_CFG_SITE_MB && device == 0) { | 
|  | /* Selecting DVI mode is meaningless for QEMU: we will | 
|  | * always display the output correctly according to the | 
|  | * pixel height/width programmed into the CLCD controller. | 
|  | */ | 
|  | return true; | 
|  | } | 
|  | default: | 
|  | break; | 
|  | } | 
|  |  | 
|  | cfgctrl_unimp: | 
|  | qemu_log_mask(LOG_UNIMP, | 
|  | "arm_sysctl: Unimplemented SYS_CFGCTRL write of function " | 
|  | "0x%x DCC 0x%x site 0x%x position 0x%x device 0x%x\n", | 
|  | function, dcc, site, position, device); | 
|  | return false; | 
|  | } | 
|  |  | 
|  | static void arm_sysctl_write(void *opaque, hwaddr offset, | 
|  | uint64_t val, unsigned size) | 
|  | { | 
|  | arm_sysctl_state *s = (arm_sysctl_state *)opaque; | 
|  |  | 
|  | switch (offset) { | 
|  | case 0x08: /* LED */ | 
|  | s->leds = val; | 
|  | break; | 
|  | 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 */ | 
|  | switch (board_id(s)) { | 
|  | case BOARD_ID_PB926: | 
|  | if (s->lockval == LOCK_VALUE) { | 
|  | s->resetlevel = val; | 
|  | if (val & 0x100) { | 
|  | qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); | 
|  | } | 
|  | } | 
|  | break; | 
|  | case BOARD_ID_PBX: | 
|  | case BOARD_ID_PBA8: | 
|  | if (s->lockval == LOCK_VALUE) { | 
|  | s->resetlevel = val; | 
|  | if (val & 0x04) { | 
|  | qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); | 
|  | } | 
|  | } | 
|  | break; | 
|  | case BOARD_ID_VEXPRESS: | 
|  | case BOARD_ID_EB: | 
|  | default: | 
|  | /* reserved: RAZ/WI */ | 
|  | break; | 
|  | } | 
|  | break; | 
|  | case 0x44: /* PCICTL */ | 
|  | /* nothing to do.  */ | 
|  | break; | 
|  | case 0x4c: /* FLASH */ | 
|  | break; | 
|  | case 0x50: /* CLCD */ | 
|  | switch (board_id(s)) { | 
|  | case BOARD_ID_PB926: | 
|  | /* On 926 bits 13:8 are R/O, bits 1:0 control | 
|  | * the mux that defines how to interpret the PL110 | 
|  | * graphics format, and other bits are r/w but we | 
|  | * don't implement them to do anything. | 
|  | */ | 
|  | s->sys_clcd &= 0x3f00; | 
|  | s->sys_clcd |= val & ~0x3f00; | 
|  | qemu_set_irq(s->pl110_mux_ctrl, val & 3); | 
|  | break; | 
|  | case BOARD_ID_EB: | 
|  | /* The EB is the same except that there is no mux since | 
|  | * the EB has a PL111. | 
|  | */ | 
|  | s->sys_clcd &= 0x3f00; | 
|  | s->sys_clcd |= val & ~0x3f00; | 
|  | break; | 
|  | case BOARD_ID_PBA8: | 
|  | case BOARD_ID_PBX: | 
|  | /* On PBA8 and PBX bit 7 is r/w and all other bits | 
|  | * are either r/o or RAZ/WI. | 
|  | */ | 
|  | s->sys_clcd &= (1 << 7); | 
|  | s->sys_clcd |= val & ~(1 << 7); | 
|  | break; | 
|  | case BOARD_ID_VEXPRESS: | 
|  | default: | 
|  | /* On VExpress this register is unimplemented and will RAZ/WI */ | 
|  | break; | 
|  | } | 
|  | break; | 
|  | 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; | 
|  | } | 
|  | /* Undefined bits [19:18] are RAZ/WI, and writing to | 
|  | * the start bit just triggers the action; it always reads | 
|  | * as zero. | 
|  | */ | 
|  | s->sys_cfgctrl = val & ~((3 << 18) | (1 << 31)); | 
|  | if (val & (1 << 31)) { | 
|  | /* Start bit set -- actually do something */ | 
|  | unsigned int dcc = extract32(s->sys_cfgctrl, 26, 4); | 
|  | unsigned int function = extract32(s->sys_cfgctrl, 20, 6); | 
|  | unsigned int site = extract32(s->sys_cfgctrl, 16, 2); | 
|  | unsigned int position = extract32(s->sys_cfgctrl, 12, 4); | 
|  | unsigned int device = extract32(s->sys_cfgctrl, 0, 12); | 
|  | s->sys_cfgstat = 1;            /* complete */ | 
|  | if (s->sys_cfgctrl & (1 << 30)) { | 
|  | if (!vexpress_cfgctrl_write(s, dcc, function, site, position, | 
|  | device, s->sys_cfgdata)) { | 
|  | s->sys_cfgstat |= 2;        /* error */ | 
|  | } | 
|  | } else { | 
|  | uint32_t data; | 
|  | if (!vexpress_cfgctrl_read(s, dcc, function, site, position, | 
|  | device, &data)) { | 
|  | s->sys_cfgstat |= 2;        /* error */ | 
|  | } else { | 
|  | s->sys_cfgdata = data; | 
|  | } | 
|  | } | 
|  | } | 
|  | s->sys_cfgctrl &= ~(1 << 31); | 
|  | return; | 
|  | case 0xa8: /* SYS_CFGSTAT */ | 
|  | if (board_id(s) != BOARD_ID_VEXPRESS) { | 
|  | goto bad_reg; | 
|  | } | 
|  | s->sys_cfgstat = val & 3; | 
|  | return; | 
|  | default: | 
|  | bad_reg: | 
|  | qemu_log_mask(LOG_GUEST_ERROR, | 
|  | "arm_sysctl_write: Bad register offset 0x%x\n", | 
|  | (int)offset); | 
|  | return; | 
|  | } | 
|  | } | 
|  |  | 
|  | static const MemoryRegionOps arm_sysctl_ops = { | 
|  | .read = arm_sysctl_read, | 
|  | .write = arm_sysctl_write, | 
|  | .endianness = DEVICE_NATIVE_ENDIAN, | 
|  | }; | 
|  |  | 
|  | 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 void arm_sysctl_init(Object *obj) | 
|  | { | 
|  | DeviceState *dev = DEVICE(obj); | 
|  | SysBusDevice *sd = SYS_BUS_DEVICE(obj); | 
|  | arm_sysctl_state *s = ARM_SYSCTL(obj); | 
|  |  | 
|  | memory_region_init_io(&s->iomem, OBJECT(dev), &arm_sysctl_ops, s, | 
|  | "arm-sysctl", 0x1000); | 
|  | sysbus_init_mmio(sd, &s->iomem); | 
|  | qdev_init_gpio_in(dev, arm_sysctl_gpio_set, 2); | 
|  | qdev_init_gpio_out(dev, &s->pl110_mux_ctrl, 1); | 
|  | } | 
|  |  | 
|  | static void arm_sysctl_realize(DeviceState *d, Error **errp) | 
|  | { | 
|  | arm_sysctl_state *s = ARM_SYSCTL(d); | 
|  |  | 
|  | s->db_clock = g_new0(uint32_t, s->db_num_clocks); | 
|  | } | 
|  |  | 
|  | static void arm_sysctl_finalize(Object *obj) | 
|  | { | 
|  | arm_sysctl_state *s = ARM_SYSCTL(obj); | 
|  |  | 
|  | g_free(s->db_voltage); | 
|  | g_free(s->db_clock); | 
|  | g_free(s->db_clock_reset); | 
|  | } | 
|  |  | 
|  | static Property arm_sysctl_properties[] = { | 
|  | DEFINE_PROP_UINT32("sys_id", arm_sysctl_state, sys_id, 0), | 
|  | DEFINE_PROP_UINT32("proc_id", arm_sysctl_state, proc_id, 0), | 
|  | /* Daughterboard power supply voltages (as reported via SYS_CFG) */ | 
|  | DEFINE_PROP_ARRAY("db-voltage", arm_sysctl_state, db_num_vsensors, | 
|  | db_voltage, qdev_prop_uint32, uint32_t), | 
|  | /* Daughterboard clock reset values (as reported via SYS_CFG) */ | 
|  | DEFINE_PROP_ARRAY("db-clock", arm_sysctl_state, db_num_clocks, | 
|  | db_clock_reset, qdev_prop_uint32, uint32_t), | 
|  | DEFINE_PROP_END_OF_LIST(), | 
|  | }; | 
|  |  | 
|  | static void arm_sysctl_class_init(ObjectClass *klass, void *data) | 
|  | { | 
|  | DeviceClass *dc = DEVICE_CLASS(klass); | 
|  |  | 
|  | dc->realize = arm_sysctl_realize; | 
|  | dc->reset = arm_sysctl_reset; | 
|  | dc->vmsd = &vmstate_arm_sysctl; | 
|  | device_class_set_props(dc, arm_sysctl_properties); | 
|  | } | 
|  |  | 
|  | static const TypeInfo arm_sysctl_info = { | 
|  | .name          = TYPE_ARM_SYSCTL, | 
|  | .parent        = TYPE_SYS_BUS_DEVICE, | 
|  | .instance_size = sizeof(arm_sysctl_state), | 
|  | .instance_init = arm_sysctl_init, | 
|  | .instance_finalize = arm_sysctl_finalize, | 
|  | .class_init    = arm_sysctl_class_init, | 
|  | }; | 
|  |  | 
|  | static void arm_sysctl_register_types(void) | 
|  | { | 
|  | type_register_static(&arm_sysctl_info); | 
|  | } | 
|  |  | 
|  | type_init(arm_sysctl_register_types) |