| /* |
| * Nuvoton NPCM7xx Flash Interface Unit (FIU) |
| * |
| * Copyright 2020 Google LLC |
| * |
| * 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. |
| */ |
| |
| #include "qemu/osdep.h" |
| |
| #include "hw/irq.h" |
| #include "hw/qdev-properties.h" |
| #include "hw/ssi/npcm7xx_fiu.h" |
| #include "migration/vmstate.h" |
| #include "qapi/error.h" |
| #include "qemu/error-report.h" |
| #include "qemu/log.h" |
| #include "qemu/module.h" |
| #include "qemu/units.h" |
| |
| #include "trace.h" |
| |
| /* Up to 128 MiB of flash may be accessed directly as memory. */ |
| #define NPCM7XX_FIU_FLASH_WINDOW_SIZE (128 * MiB) |
| |
| /* Each module has 4 KiB of register space. Only a fraction of it is used. */ |
| #define NPCM7XX_FIU_CTRL_REGS_SIZE (4 * KiB) |
| |
| /* 32-bit FIU register indices. */ |
| enum NPCM7xxFIURegister { |
| NPCM7XX_FIU_DRD_CFG, |
| NPCM7XX_FIU_DWR_CFG, |
| NPCM7XX_FIU_UMA_CFG, |
| NPCM7XX_FIU_UMA_CTS, |
| NPCM7XX_FIU_UMA_CMD, |
| NPCM7XX_FIU_UMA_ADDR, |
| NPCM7XX_FIU_PRT_CFG, |
| NPCM7XX_FIU_UMA_DW0 = 0x0020 / sizeof(uint32_t), |
| NPCM7XX_FIU_UMA_DW1, |
| NPCM7XX_FIU_UMA_DW2, |
| NPCM7XX_FIU_UMA_DW3, |
| NPCM7XX_FIU_UMA_DR0, |
| NPCM7XX_FIU_UMA_DR1, |
| NPCM7XX_FIU_UMA_DR2, |
| NPCM7XX_FIU_UMA_DR3, |
| NPCM7XX_FIU_PRT_CMD0, |
| NPCM7XX_FIU_PRT_CMD1, |
| NPCM7XX_FIU_PRT_CMD2, |
| NPCM7XX_FIU_PRT_CMD3, |
| NPCM7XX_FIU_PRT_CMD4, |
| NPCM7XX_FIU_PRT_CMD5, |
| NPCM7XX_FIU_PRT_CMD6, |
| NPCM7XX_FIU_PRT_CMD7, |
| NPCM7XX_FIU_PRT_CMD8, |
| NPCM7XX_FIU_PRT_CMD9, |
| NPCM7XX_FIU_CFG = 0x78 / sizeof(uint32_t), |
| NPCM7XX_FIU_REGS_END, |
| }; |
| |
| /* FIU_{DRD,DWR,UMA,PTR}_CFG cannot be written when this bit is set. */ |
| #define NPCM7XX_FIU_CFG_LCK BIT(31) |
| |
| /* Direct Read configuration register fields. */ |
| #define FIU_DRD_CFG_ADDSIZ(rv) extract32(rv, 16, 2) |
| #define FIU_ADDSIZ_3BYTES 0 |
| #define FIU_ADDSIZ_4BYTES 1 |
| #define FIU_DRD_CFG_DBW(rv) extract32(rv, 12, 2) |
| #define FIU_DRD_CFG_ACCTYPE(rv) extract32(rv, 8, 2) |
| #define FIU_DRD_CFG_RDCMD(rv) extract32(rv, 0, 8) |
| |
| /* Direct Write configuration register fields. */ |
| #define FIU_DWR_CFG_ADDSIZ(rv) extract32(rv, 16, 2) |
| #define FIU_DWR_CFG_WRCMD(rv) extract32(rv, 0, 8) |
| |
| /* User-Mode Access register fields. */ |
| |
| /* Command Mode Lock and the bits protected by it. */ |
| #define FIU_UMA_CFG_CMMLCK BIT(30) |
| #define FIU_UMA_CFG_CMMLCK_MASK 0x00000403 |
| |
| #define FIU_UMA_CFG_RDATSIZ(rv) extract32(rv, 24, 5) |
| #define FIU_UMA_CFG_DBSIZ(rv) extract32(rv, 21, 3) |
| #define FIU_UMA_CFG_WDATSIZ(rv) extract32(rv, 16, 5) |
| #define FIU_UMA_CFG_ADDSIZ(rv) extract32(rv, 11, 3) |
| #define FIU_UMA_CFG_CMDSIZ(rv) extract32(rv, 10, 1) |
| #define FIU_UMA_CFG_DBPCK(rv) extract32(rv, 6, 2) |
| |
| #define FIU_UMA_CTS_RDYIE BIT(25) |
| #define FIU_UMA_CTS_RDYST BIT(24) |
| #define FIU_UMA_CTS_SW_CS BIT(16) |
| #define FIU_UMA_CTS_DEV_NUM(rv) extract32(rv, 8, 2) |
| #define FIU_UMA_CTS_EXEC_DONE BIT(0) |
| |
| /* |
| * Returns the index of flash in the fiu->flash array. This corresponds to the |
| * chip select ID of the flash. |
| */ |
| static unsigned npcm7xx_fiu_cs_index(NPCM7xxFIUState *fiu, |
| NPCM7xxFIUFlash *flash) |
| { |
| int index = flash - fiu->flash; |
| |
| g_assert(index >= 0 && index < fiu->cs_count); |
| |
| return index; |
| } |
| |
| /* Assert the chip select specified in the UMA Control/Status Register. */ |
| static void npcm7xx_fiu_select(NPCM7xxFIUState *s, unsigned cs_id) |
| { |
| trace_npcm7xx_fiu_select(DEVICE(s)->canonical_path, cs_id); |
| |
| if (cs_id < s->cs_count) { |
| qemu_irq_lower(s->cs_lines[cs_id]); |
| s->active_cs = cs_id; |
| } else { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: UMA to CS%d; this module has only %d chip selects", |
| DEVICE(s)->canonical_path, cs_id, s->cs_count); |
| s->active_cs = -1; |
| } |
| } |
| |
| /* Deassert the currently active chip select. */ |
| static void npcm7xx_fiu_deselect(NPCM7xxFIUState *s) |
| { |
| if (s->active_cs < 0) { |
| return; |
| } |
| |
| trace_npcm7xx_fiu_deselect(DEVICE(s)->canonical_path, s->active_cs); |
| |
| qemu_irq_raise(s->cs_lines[s->active_cs]); |
| s->active_cs = -1; |
| } |
| |
| /* Direct flash memory read handler. */ |
| static uint64_t npcm7xx_fiu_flash_read(void *opaque, hwaddr addr, |
| unsigned int size) |
| { |
| NPCM7xxFIUFlash *f = opaque; |
| NPCM7xxFIUState *fiu = f->fiu; |
| uint64_t value = 0; |
| uint32_t drd_cfg; |
| int dummy_cycles; |
| int i; |
| |
| if (fiu->active_cs != -1) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: direct flash read with CS%d already active", |
| DEVICE(fiu)->canonical_path, fiu->active_cs); |
| } |
| |
| npcm7xx_fiu_select(fiu, npcm7xx_fiu_cs_index(fiu, f)); |
| |
| drd_cfg = fiu->regs[NPCM7XX_FIU_DRD_CFG]; |
| ssi_transfer(fiu->spi, FIU_DRD_CFG_RDCMD(drd_cfg)); |
| |
| switch (FIU_DRD_CFG_ADDSIZ(drd_cfg)) { |
| case FIU_ADDSIZ_4BYTES: |
| ssi_transfer(fiu->spi, extract32(addr, 24, 8)); |
| /* fall through */ |
| case FIU_ADDSIZ_3BYTES: |
| ssi_transfer(fiu->spi, extract32(addr, 16, 8)); |
| ssi_transfer(fiu->spi, extract32(addr, 8, 8)); |
| ssi_transfer(fiu->spi, extract32(addr, 0, 8)); |
| break; |
| |
| default: |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: bad address size %d\n", |
| DEVICE(fiu)->canonical_path, FIU_DRD_CFG_ADDSIZ(drd_cfg)); |
| break; |
| } |
| |
| /* Flash chip model expects one transfer per dummy bit, not byte */ |
| dummy_cycles = |
| (FIU_DRD_CFG_DBW(drd_cfg) * 8) >> FIU_DRD_CFG_ACCTYPE(drd_cfg); |
| for (i = 0; i < dummy_cycles; i++) { |
| ssi_transfer(fiu->spi, 0); |
| } |
| |
| for (i = 0; i < size; i++) { |
| value = deposit64(value, 8 * i, 8, ssi_transfer(fiu->spi, 0)); |
| } |
| |
| trace_npcm7xx_fiu_flash_read(DEVICE(fiu)->canonical_path, fiu->active_cs, |
| addr, size, value); |
| |
| npcm7xx_fiu_deselect(fiu); |
| |
| return value; |
| } |
| |
| /* Direct flash memory write handler. */ |
| static void npcm7xx_fiu_flash_write(void *opaque, hwaddr addr, uint64_t v, |
| unsigned int size) |
| { |
| NPCM7xxFIUFlash *f = opaque; |
| NPCM7xxFIUState *fiu = f->fiu; |
| uint32_t dwr_cfg; |
| unsigned cs_id; |
| int i; |
| |
| if (fiu->active_cs != -1) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: direct flash write with CS%d already active", |
| DEVICE(fiu)->canonical_path, fiu->active_cs); |
| } |
| |
| cs_id = npcm7xx_fiu_cs_index(fiu, f); |
| trace_npcm7xx_fiu_flash_write(DEVICE(fiu)->canonical_path, cs_id, addr, |
| size, v); |
| npcm7xx_fiu_select(fiu, cs_id); |
| |
| dwr_cfg = fiu->regs[NPCM7XX_FIU_DWR_CFG]; |
| ssi_transfer(fiu->spi, FIU_DWR_CFG_WRCMD(dwr_cfg)); |
| |
| switch (FIU_DWR_CFG_ADDSIZ(dwr_cfg)) { |
| case FIU_ADDSIZ_4BYTES: |
| ssi_transfer(fiu->spi, extract32(addr, 24, 8)); |
| /* fall through */ |
| case FIU_ADDSIZ_3BYTES: |
| ssi_transfer(fiu->spi, extract32(addr, 16, 8)); |
| ssi_transfer(fiu->spi, extract32(addr, 8, 8)); |
| ssi_transfer(fiu->spi, extract32(addr, 0, 8)); |
| break; |
| |
| default: |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: bad address size %d\n", |
| DEVICE(fiu)->canonical_path, FIU_DWR_CFG_ADDSIZ(dwr_cfg)); |
| break; |
| } |
| |
| for (i = 0; i < size; i++) { |
| ssi_transfer(fiu->spi, extract64(v, i * 8, 8)); |
| } |
| |
| npcm7xx_fiu_deselect(fiu); |
| } |
| |
| static const MemoryRegionOps npcm7xx_fiu_flash_ops = { |
| .read = npcm7xx_fiu_flash_read, |
| .write = npcm7xx_fiu_flash_write, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| .valid = { |
| .min_access_size = 1, |
| .max_access_size = 8, |
| .unaligned = true, |
| }, |
| }; |
| |
| /* Control register read handler. */ |
| static uint64_t npcm7xx_fiu_ctrl_read(void *opaque, hwaddr addr, |
| unsigned int size) |
| { |
| hwaddr reg = addr / sizeof(uint32_t); |
| NPCM7xxFIUState *s = opaque; |
| uint32_t value; |
| |
| if (reg < NPCM7XX_FIU_NR_REGS) { |
| value = s->regs[reg]; |
| } else { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: read from invalid offset 0x%" PRIx64 "\n", |
| DEVICE(s)->canonical_path, addr); |
| value = 0; |
| } |
| |
| trace_npcm7xx_fiu_ctrl_read(DEVICE(s)->canonical_path, addr, value); |
| |
| return value; |
| } |
| |
| /* Send the specified number of address bytes from the UMA address register. */ |
| static void send_address(SSIBus *spi, unsigned int addsiz, uint32_t addr) |
| { |
| switch (addsiz) { |
| case 4: |
| ssi_transfer(spi, extract32(addr, 24, 8)); |
| /* fall through */ |
| case 3: |
| ssi_transfer(spi, extract32(addr, 16, 8)); |
| /* fall through */ |
| case 2: |
| ssi_transfer(spi, extract32(addr, 8, 8)); |
| /* fall through */ |
| case 1: |
| ssi_transfer(spi, extract32(addr, 0, 8)); |
| /* fall through */ |
| case 0: |
| break; |
| } |
| } |
| |
| /* Send the number of dummy bits specified in the UMA config register. */ |
| static void send_dummy_bits(SSIBus *spi, uint32_t uma_cfg, uint32_t uma_cmd) |
| { |
| unsigned int bits_per_clock = 1U << FIU_UMA_CFG_DBPCK(uma_cfg); |
| unsigned int i; |
| |
| for (i = 0; i < FIU_UMA_CFG_DBSIZ(uma_cfg); i++) { |
| /* Use bytes 0 and 1 first, then keep repeating byte 2 */ |
| unsigned int field = (i < 2) ? ((i + 1) * 8) : 24; |
| unsigned int j; |
| |
| for (j = 0; j < 8; j += bits_per_clock) { |
| ssi_transfer(spi, extract32(uma_cmd, field + j, bits_per_clock)); |
| } |
| } |
| } |
| |
| /* Perform a User-Mode Access transaction. */ |
| static void npcm7xx_fiu_uma_transaction(NPCM7xxFIUState *s) |
| { |
| uint32_t uma_cts = s->regs[NPCM7XX_FIU_UMA_CTS]; |
| uint32_t uma_cfg; |
| unsigned int i; |
| |
| /* SW_CS means the CS is already forced low, so don't touch it. */ |
| if (uma_cts & FIU_UMA_CTS_SW_CS) { |
| int cs_id = FIU_UMA_CTS_DEV_NUM(s->regs[NPCM7XX_FIU_UMA_CTS]); |
| npcm7xx_fiu_select(s, cs_id); |
| } |
| |
| /* Send command, if present. */ |
| uma_cfg = s->regs[NPCM7XX_FIU_UMA_CFG]; |
| if (FIU_UMA_CFG_CMDSIZ(uma_cfg) > 0) { |
| ssi_transfer(s->spi, extract32(s->regs[NPCM7XX_FIU_UMA_CMD], 0, 8)); |
| } |
| |
| /* Send address, if present. */ |
| send_address(s->spi, FIU_UMA_CFG_ADDSIZ(uma_cfg), |
| s->regs[NPCM7XX_FIU_UMA_ADDR]); |
| |
| /* Write data, if present. */ |
| for (i = 0; i < FIU_UMA_CFG_WDATSIZ(uma_cfg); i++) { |
| unsigned int reg = |
| (i < 16) ? (NPCM7XX_FIU_UMA_DW0 + i / 4) : NPCM7XX_FIU_UMA_DW3; |
| unsigned int field = (i % 4) * 8; |
| |
| ssi_transfer(s->spi, extract32(s->regs[reg], field, 8)); |
| } |
| |
| /* Send dummy bits, if present. */ |
| send_dummy_bits(s->spi, uma_cfg, s->regs[NPCM7XX_FIU_UMA_CMD]); |
| |
| /* Read data, if present. */ |
| for (i = 0; i < FIU_UMA_CFG_RDATSIZ(uma_cfg); i++) { |
| unsigned int reg = NPCM7XX_FIU_UMA_DR0 + i / 4; |
| unsigned int field = (i % 4) * 8; |
| uint8_t c; |
| |
| c = ssi_transfer(s->spi, 0); |
| if (reg <= NPCM7XX_FIU_UMA_DR3) { |
| s->regs[reg] = deposit32(s->regs[reg], field, 8, c); |
| } |
| } |
| |
| /* Again, don't touch CS if the user is forcing it low. */ |
| if (uma_cts & FIU_UMA_CTS_SW_CS) { |
| npcm7xx_fiu_deselect(s); |
| } |
| |
| /* RDYST means a command has completed since it was cleared. */ |
| s->regs[NPCM7XX_FIU_UMA_CTS] |= FIU_UMA_CTS_RDYST; |
| /* EXEC_DONE means Execute Command / Not Done, so clear it here. */ |
| s->regs[NPCM7XX_FIU_UMA_CTS] &= ~FIU_UMA_CTS_EXEC_DONE; |
| } |
| |
| /* Control register write handler. */ |
| static void npcm7xx_fiu_ctrl_write(void *opaque, hwaddr addr, uint64_t v, |
| unsigned int size) |
| { |
| hwaddr reg = addr / sizeof(uint32_t); |
| NPCM7xxFIUState *s = opaque; |
| uint32_t value = v; |
| |
| trace_npcm7xx_fiu_ctrl_write(DEVICE(s)->canonical_path, addr, value); |
| |
| switch (reg) { |
| case NPCM7XX_FIU_UMA_CFG: |
| if (s->regs[reg] & FIU_UMA_CFG_CMMLCK) { |
| value &= ~FIU_UMA_CFG_CMMLCK_MASK; |
| value |= (s->regs[reg] & FIU_UMA_CFG_CMMLCK_MASK); |
| } |
| /* fall through */ |
| case NPCM7XX_FIU_DRD_CFG: |
| case NPCM7XX_FIU_DWR_CFG: |
| if (s->regs[reg] & NPCM7XX_FIU_CFG_LCK) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: write to locked register @ 0x%" PRIx64 "\n", |
| DEVICE(s)->canonical_path, addr); |
| return; |
| } |
| s->regs[reg] = value; |
| break; |
| |
| case NPCM7XX_FIU_UMA_CTS: |
| if (value & FIU_UMA_CTS_RDYST) { |
| value &= ~FIU_UMA_CTS_RDYST; |
| } else { |
| value |= s->regs[reg] & FIU_UMA_CTS_RDYST; |
| } |
| if ((s->regs[reg] ^ value) & FIU_UMA_CTS_SW_CS) { |
| if (value & FIU_UMA_CTS_SW_CS) { |
| /* |
| * Don't drop CS if there's a transfer in progress, or we're |
| * about to start one. |
| */ |
| if (!((value | s->regs[reg]) & FIU_UMA_CTS_EXEC_DONE)) { |
| npcm7xx_fiu_deselect(s); |
| } |
| } else { |
| int cs_id = FIU_UMA_CTS_DEV_NUM(s->regs[NPCM7XX_FIU_UMA_CTS]); |
| npcm7xx_fiu_select(s, cs_id); |
| } |
| } |
| s->regs[reg] = value | (s->regs[reg] & FIU_UMA_CTS_EXEC_DONE); |
| if (value & FIU_UMA_CTS_EXEC_DONE) { |
| npcm7xx_fiu_uma_transaction(s); |
| } |
| break; |
| |
| case NPCM7XX_FIU_UMA_DR0 ... NPCM7XX_FIU_UMA_DR3: |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: write to read-only register @ 0x%" PRIx64 "\n", |
| DEVICE(s)->canonical_path, addr); |
| return; |
| |
| case NPCM7XX_FIU_PRT_CFG: |
| case NPCM7XX_FIU_PRT_CMD0 ... NPCM7XX_FIU_PRT_CMD9: |
| qemu_log_mask(LOG_UNIMP, "%s: PRT is not implemented\n", __func__); |
| break; |
| |
| case NPCM7XX_FIU_UMA_CMD: |
| case NPCM7XX_FIU_UMA_ADDR: |
| case NPCM7XX_FIU_UMA_DW0 ... NPCM7XX_FIU_UMA_DW3: |
| case NPCM7XX_FIU_CFG: |
| s->regs[reg] = value; |
| break; |
| |
| default: |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: write to invalid offset 0x%" PRIx64 "\n", |
| DEVICE(s)->canonical_path, addr); |
| return; |
| } |
| } |
| |
| static const MemoryRegionOps npcm7xx_fiu_ctrl_ops = { |
| .read = npcm7xx_fiu_ctrl_read, |
| .write = npcm7xx_fiu_ctrl_write, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| .valid = { |
| .min_access_size = 4, |
| .max_access_size = 4, |
| .unaligned = false, |
| }, |
| }; |
| |
| static void npcm7xx_fiu_enter_reset(Object *obj, ResetType type) |
| { |
| NPCM7xxFIUState *s = NPCM7XX_FIU(obj); |
| |
| trace_npcm7xx_fiu_enter_reset(DEVICE(obj)->canonical_path, type); |
| |
| memset(s->regs, 0, sizeof(s->regs)); |
| |
| s->regs[NPCM7XX_FIU_DRD_CFG] = 0x0300100b; |
| s->regs[NPCM7XX_FIU_DWR_CFG] = 0x03000002; |
| s->regs[NPCM7XX_FIU_UMA_CFG] = 0x00000400; |
| s->regs[NPCM7XX_FIU_UMA_CTS] = 0x00010000; |
| s->regs[NPCM7XX_FIU_UMA_CMD] = 0x0000000b; |
| s->regs[NPCM7XX_FIU_PRT_CFG] = 0x00000400; |
| s->regs[NPCM7XX_FIU_CFG] = 0x0000000b; |
| } |
| |
| static void npcm7xx_fiu_hold_reset(Object *obj) |
| { |
| NPCM7xxFIUState *s = NPCM7XX_FIU(obj); |
| int i; |
| |
| trace_npcm7xx_fiu_hold_reset(DEVICE(obj)->canonical_path); |
| |
| for (i = 0; i < s->cs_count; i++) { |
| qemu_irq_raise(s->cs_lines[i]); |
| } |
| } |
| |
| static void npcm7xx_fiu_realize(DeviceState *dev, Error **errp) |
| { |
| NPCM7xxFIUState *s = NPCM7XX_FIU(dev); |
| SysBusDevice *sbd = &s->parent; |
| int i; |
| |
| if (s->cs_count <= 0) { |
| error_setg(errp, "%s: %d chip selects specified, need at least one", |
| dev->canonical_path, s->cs_count); |
| return; |
| } |
| |
| s->spi = ssi_create_bus(dev, "spi"); |
| s->cs_lines = g_new0(qemu_irq, s->cs_count); |
| qdev_init_gpio_out_named(DEVICE(s), s->cs_lines, "cs", s->cs_count); |
| s->flash = g_new0(NPCM7xxFIUFlash, s->cs_count); |
| |
| /* |
| * Register the control registers region first. It may be followed by one |
| * or more direct flash access regions. |
| */ |
| memory_region_init_io(&s->mmio, OBJECT(s), &npcm7xx_fiu_ctrl_ops, s, "ctrl", |
| NPCM7XX_FIU_CTRL_REGS_SIZE); |
| sysbus_init_mmio(sbd, &s->mmio); |
| |
| for (i = 0; i < s->cs_count; i++) { |
| NPCM7xxFIUFlash *flash = &s->flash[i]; |
| flash->fiu = s; |
| memory_region_init_io(&flash->direct_access, OBJECT(s), |
| &npcm7xx_fiu_flash_ops, &s->flash[i], "flash", |
| NPCM7XX_FIU_FLASH_WINDOW_SIZE); |
| sysbus_init_mmio(sbd, &flash->direct_access); |
| } |
| } |
| |
| static const VMStateDescription vmstate_npcm7xx_fiu = { |
| .name = "npcm7xx-fiu", |
| .version_id = 0, |
| .minimum_version_id = 0, |
| .fields = (VMStateField[]) { |
| VMSTATE_INT32(active_cs, NPCM7xxFIUState), |
| VMSTATE_UINT32_ARRAY(regs, NPCM7xxFIUState, NPCM7XX_FIU_NR_REGS), |
| VMSTATE_END_OF_LIST(), |
| }, |
| }; |
| |
| static Property npcm7xx_fiu_properties[] = { |
| DEFINE_PROP_INT32("cs-count", NPCM7xxFIUState, cs_count, 0), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void npcm7xx_fiu_class_init(ObjectClass *klass, void *data) |
| { |
| ResettableClass *rc = RESETTABLE_CLASS(klass); |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| QEMU_BUILD_BUG_ON(NPCM7XX_FIU_REGS_END > NPCM7XX_FIU_NR_REGS); |
| |
| dc->desc = "NPCM7xx Flash Interface Unit"; |
| dc->realize = npcm7xx_fiu_realize; |
| dc->vmsd = &vmstate_npcm7xx_fiu; |
| rc->phases.enter = npcm7xx_fiu_enter_reset; |
| rc->phases.hold = npcm7xx_fiu_hold_reset; |
| device_class_set_props(dc, npcm7xx_fiu_properties); |
| } |
| |
| static const TypeInfo npcm7xx_fiu_types[] = { |
| { |
| .name = TYPE_NPCM7XX_FIU, |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_size = sizeof(NPCM7xxFIUState), |
| .class_init = npcm7xx_fiu_class_init, |
| }, |
| }; |
| DEFINE_TYPES(npcm7xx_fiu_types); |
