| /* |
| * CFI parallel flash with AMD command set emulation |
| * |
| * Copyright (c) 2005 Jocelyn Mayer |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| /* |
| * For now, this code can emulate flashes of 1, 2 or 4 bytes width. |
| * Supported commands/modes are: |
| * - flash read |
| * - flash write |
| * - flash ID read |
| * - sector erase |
| * - chip erase |
| * - unlock bypass command |
| * - CFI queries |
| * |
| * It does not support flash interleaving. |
| * It does not implement boot blocs with reduced size |
| * It does not implement software data protection as found in many real chips |
| * It does not implement erase suspend/resume commands |
| * It does not implement multiple sectors erase |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "hw/hw.h" |
| #include "hw/block/flash.h" |
| #include "qapi/error.h" |
| #include "qemu/timer.h" |
| #include "sysemu/block-backend.h" |
| #include "exec/address-spaces.h" |
| #include "qemu/host-utils.h" |
| #include "hw/sysbus.h" |
| |
| //#define PFLASH_DEBUG |
| #ifdef PFLASH_DEBUG |
| #define DPRINTF(fmt, ...) \ |
| do { \ |
| fprintf(stderr, "PFLASH: " fmt , ## __VA_ARGS__); \ |
| } while (0) |
| #else |
| #define DPRINTF(fmt, ...) do { } while (0) |
| #endif |
| |
| #define PFLASH_LAZY_ROMD_THRESHOLD 42 |
| |
| #define CFI_PFLASH02(obj) OBJECT_CHECK(pflash_t, (obj), TYPE_CFI_PFLASH02) |
| |
| struct pflash_t { |
| /*< private >*/ |
| SysBusDevice parent_obj; |
| /*< public >*/ |
| |
| BlockBackend *blk; |
| uint32_t sector_len; |
| uint32_t nb_blocs; |
| uint32_t chip_len; |
| uint8_t mappings; |
| uint8_t width; |
| uint8_t be; |
| int wcycle; /* if 0, the flash is read normally */ |
| int bypass; |
| int ro; |
| uint8_t cmd; |
| uint8_t status; |
| /* FIXME: implement array device properties */ |
| uint16_t ident0; |
| uint16_t ident1; |
| uint16_t ident2; |
| uint16_t ident3; |
| uint16_t unlock_addr0; |
| uint16_t unlock_addr1; |
| uint8_t cfi_len; |
| uint8_t cfi_table[0x52]; |
| QEMUTimer *timer; |
| /* The device replicates the flash memory across its memory space. Emulate |
| * that by having a container (.mem) filled with an array of aliases |
| * (.mem_mappings) pointing to the flash memory (.orig_mem). |
| */ |
| MemoryRegion mem; |
| MemoryRegion *mem_mappings; /* array; one per mapping */ |
| MemoryRegion orig_mem; |
| int rom_mode; |
| int read_counter; /* used for lazy switch-back to rom mode */ |
| char *name; |
| void *storage; |
| }; |
| |
| /* |
| * Set up replicated mappings of the same region. |
| */ |
| static void pflash_setup_mappings(pflash_t *pfl) |
| { |
| unsigned i; |
| hwaddr size = memory_region_size(&pfl->orig_mem); |
| |
| memory_region_init(&pfl->mem, OBJECT(pfl), "pflash", pfl->mappings * size); |
| pfl->mem_mappings = g_new(MemoryRegion, pfl->mappings); |
| for (i = 0; i < pfl->mappings; ++i) { |
| memory_region_init_alias(&pfl->mem_mappings[i], OBJECT(pfl), |
| "pflash-alias", &pfl->orig_mem, 0, size); |
| memory_region_add_subregion(&pfl->mem, i * size, &pfl->mem_mappings[i]); |
| } |
| } |
| |
| static void pflash_register_memory(pflash_t *pfl, int rom_mode) |
| { |
| memory_region_rom_device_set_romd(&pfl->orig_mem, rom_mode); |
| pfl->rom_mode = rom_mode; |
| } |
| |
| static void pflash_timer (void *opaque) |
| { |
| pflash_t *pfl = opaque; |
| |
| DPRINTF("%s: command %02x done\n", __func__, pfl->cmd); |
| /* Reset flash */ |
| pfl->status ^= 0x80; |
| if (pfl->bypass) { |
| pfl->wcycle = 2; |
| } else { |
| pflash_register_memory(pfl, 1); |
| pfl->wcycle = 0; |
| } |
| pfl->cmd = 0; |
| } |
| |
| static uint32_t pflash_read (pflash_t *pfl, hwaddr offset, |
| int width, int be) |
| { |
| hwaddr boff; |
| uint32_t ret; |
| uint8_t *p; |
| |
| DPRINTF("%s: offset " TARGET_FMT_plx "\n", __func__, offset); |
| ret = -1; |
| /* Lazy reset to ROMD mode after a certain amount of read accesses */ |
| if (!pfl->rom_mode && pfl->wcycle == 0 && |
| ++pfl->read_counter > PFLASH_LAZY_ROMD_THRESHOLD) { |
| pflash_register_memory(pfl, 1); |
| } |
| offset &= pfl->chip_len - 1; |
| boff = offset & 0xFF; |
| if (pfl->width == 2) |
| boff = boff >> 1; |
| else if (pfl->width == 4) |
| boff = boff >> 2; |
| switch (pfl->cmd) { |
| default: |
| /* This should never happen : reset state & treat it as a read*/ |
| DPRINTF("%s: unknown command state: %x\n", __func__, pfl->cmd); |
| pfl->wcycle = 0; |
| pfl->cmd = 0; |
| /* fall through to the read code */ |
| case 0x80: |
| /* We accept reads during second unlock sequence... */ |
| case 0x00: |
| flash_read: |
| /* Flash area read */ |
| p = pfl->storage; |
| switch (width) { |
| case 1: |
| ret = p[offset]; |
| // DPRINTF("%s: data offset %08x %02x\n", __func__, offset, ret); |
| break; |
| case 2: |
| if (be) { |
| ret = p[offset] << 8; |
| ret |= p[offset + 1]; |
| } else { |
| ret = p[offset]; |
| ret |= p[offset + 1] << 8; |
| } |
| // DPRINTF("%s: data offset %08x %04x\n", __func__, offset, ret); |
| break; |
| case 4: |
| if (be) { |
| ret = p[offset] << 24; |
| ret |= p[offset + 1] << 16; |
| ret |= p[offset + 2] << 8; |
| ret |= p[offset + 3]; |
| } else { |
| ret = p[offset]; |
| ret |= p[offset + 1] << 8; |
| ret |= p[offset + 2] << 16; |
| ret |= p[offset + 3] << 24; |
| } |
| // DPRINTF("%s: data offset %08x %08x\n", __func__, offset, ret); |
| break; |
| } |
| break; |
| case 0x90: |
| /* flash ID read */ |
| switch (boff) { |
| case 0x00: |
| case 0x01: |
| ret = boff & 0x01 ? pfl->ident1 : pfl->ident0; |
| break; |
| case 0x02: |
| ret = 0x00; /* Pretend all sectors are unprotected */ |
| break; |
| case 0x0E: |
| case 0x0F: |
| ret = boff & 0x01 ? pfl->ident3 : pfl->ident2; |
| if (ret == (uint8_t)-1) { |
| goto flash_read; |
| } |
| break; |
| default: |
| goto flash_read; |
| } |
| DPRINTF("%s: ID " TARGET_FMT_plx " %x\n", __func__, boff, ret); |
| break; |
| case 0xA0: |
| case 0x10: |
| case 0x30: |
| /* Status register read */ |
| ret = pfl->status; |
| DPRINTF("%s: status %x\n", __func__, ret); |
| /* Toggle bit 6 */ |
| pfl->status ^= 0x40; |
| break; |
| case 0x98: |
| /* CFI query mode */ |
| if (boff > pfl->cfi_len) |
| ret = 0; |
| else |
| ret = pfl->cfi_table[boff]; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| /* update flash content on disk */ |
| static void pflash_update(pflash_t *pfl, int offset, |
| int size) |
| { |
| int offset_end; |
| if (pfl->blk) { |
| offset_end = offset + size; |
| /* widen to sector boundaries */ |
| offset = QEMU_ALIGN_DOWN(offset, BDRV_SECTOR_SIZE); |
| offset_end = QEMU_ALIGN_UP(offset_end, BDRV_SECTOR_SIZE); |
| blk_pwrite(pfl->blk, offset, pfl->storage + offset, |
| offset_end - offset, 0); |
| } |
| } |
| |
| static void pflash_write (pflash_t *pfl, hwaddr offset, |
| uint32_t value, int width, int be) |
| { |
| hwaddr boff; |
| uint8_t *p; |
| uint8_t cmd; |
| |
| cmd = value; |
| if (pfl->cmd != 0xA0 && cmd == 0xF0) { |
| #if 0 |
| DPRINTF("%s: flash reset asked (%02x %02x)\n", |
| __func__, pfl->cmd, cmd); |
| #endif |
| goto reset_flash; |
| } |
| DPRINTF("%s: offset " TARGET_FMT_plx " %08x %d %d\n", __func__, |
| offset, value, width, pfl->wcycle); |
| offset &= pfl->chip_len - 1; |
| |
| DPRINTF("%s: offset " TARGET_FMT_plx " %08x %d\n", __func__, |
| offset, value, width); |
| boff = offset & (pfl->sector_len - 1); |
| if (pfl->width == 2) |
| boff = boff >> 1; |
| else if (pfl->width == 4) |
| boff = boff >> 2; |
| switch (pfl->wcycle) { |
| case 0: |
| /* Set the device in I/O access mode if required */ |
| if (pfl->rom_mode) |
| pflash_register_memory(pfl, 0); |
| pfl->read_counter = 0; |
| /* We're in read mode */ |
| check_unlock0: |
| if (boff == 0x55 && cmd == 0x98) { |
| enter_CFI_mode: |
| /* Enter CFI query mode */ |
| pfl->wcycle = 7; |
| pfl->cmd = 0x98; |
| return; |
| } |
| if (boff != pfl->unlock_addr0 || cmd != 0xAA) { |
| DPRINTF("%s: unlock0 failed " TARGET_FMT_plx " %02x %04x\n", |
| __func__, boff, cmd, pfl->unlock_addr0); |
| goto reset_flash; |
| } |
| DPRINTF("%s: unlock sequence started\n", __func__); |
| break; |
| case 1: |
| /* We started an unlock sequence */ |
| check_unlock1: |
| if (boff != pfl->unlock_addr1 || cmd != 0x55) { |
| DPRINTF("%s: unlock1 failed " TARGET_FMT_plx " %02x\n", __func__, |
| boff, cmd); |
| goto reset_flash; |
| } |
| DPRINTF("%s: unlock sequence done\n", __func__); |
| break; |
| case 2: |
| /* We finished an unlock sequence */ |
| if (!pfl->bypass && boff != pfl->unlock_addr0) { |
| DPRINTF("%s: command failed " TARGET_FMT_plx " %02x\n", __func__, |
| boff, cmd); |
| goto reset_flash; |
| } |
| switch (cmd) { |
| case 0x20: |
| pfl->bypass = 1; |
| goto do_bypass; |
| case 0x80: |
| case 0x90: |
| case 0xA0: |
| pfl->cmd = cmd; |
| DPRINTF("%s: starting command %02x\n", __func__, cmd); |
| break; |
| default: |
| DPRINTF("%s: unknown command %02x\n", __func__, cmd); |
| goto reset_flash; |
| } |
| break; |
| case 3: |
| switch (pfl->cmd) { |
| case 0x80: |
| /* We need another unlock sequence */ |
| goto check_unlock0; |
| case 0xA0: |
| DPRINTF("%s: write data offset " TARGET_FMT_plx " %08x %d\n", |
| __func__, offset, value, width); |
| p = pfl->storage; |
| if (!pfl->ro) { |
| switch (width) { |
| case 1: |
| p[offset] &= value; |
| pflash_update(pfl, offset, 1); |
| break; |
| case 2: |
| if (be) { |
| p[offset] &= value >> 8; |
| p[offset + 1] &= value; |
| } else { |
| p[offset] &= value; |
| p[offset + 1] &= value >> 8; |
| } |
| pflash_update(pfl, offset, 2); |
| break; |
| case 4: |
| if (be) { |
| p[offset] &= value >> 24; |
| p[offset + 1] &= value >> 16; |
| p[offset + 2] &= value >> 8; |
| p[offset + 3] &= value; |
| } else { |
| p[offset] &= value; |
| p[offset + 1] &= value >> 8; |
| p[offset + 2] &= value >> 16; |
| p[offset + 3] &= value >> 24; |
| } |
| pflash_update(pfl, offset, 4); |
| break; |
| } |
| } |
| pfl->status = 0x00 | ~(value & 0x80); |
| /* Let's pretend write is immediate */ |
| if (pfl->bypass) |
| goto do_bypass; |
| goto reset_flash; |
| case 0x90: |
| if (pfl->bypass && cmd == 0x00) { |
| /* Unlock bypass reset */ |
| goto reset_flash; |
| } |
| /* We can enter CFI query mode from autoselect mode */ |
| if (boff == 0x55 && cmd == 0x98) |
| goto enter_CFI_mode; |
| /* No break here */ |
| default: |
| DPRINTF("%s: invalid write for command %02x\n", |
| __func__, pfl->cmd); |
| goto reset_flash; |
| } |
| case 4: |
| switch (pfl->cmd) { |
| case 0xA0: |
| /* Ignore writes while flash data write is occurring */ |
| /* As we suppose write is immediate, this should never happen */ |
| return; |
| case 0x80: |
| goto check_unlock1; |
| default: |
| /* Should never happen */ |
| DPRINTF("%s: invalid command state %02x (wc 4)\n", |
| __func__, pfl->cmd); |
| goto reset_flash; |
| } |
| break; |
| case 5: |
| switch (cmd) { |
| case 0x10: |
| if (boff != pfl->unlock_addr0) { |
| DPRINTF("%s: chip erase: invalid address " TARGET_FMT_plx "\n", |
| __func__, offset); |
| goto reset_flash; |
| } |
| /* Chip erase */ |
| DPRINTF("%s: start chip erase\n", __func__); |
| if (!pfl->ro) { |
| memset(pfl->storage, 0xFF, pfl->chip_len); |
| pflash_update(pfl, 0, pfl->chip_len); |
| } |
| pfl->status = 0x00; |
| /* Let's wait 5 seconds before chip erase is done */ |
| timer_mod(pfl->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
| (NANOSECONDS_PER_SECOND * 5)); |
| break; |
| case 0x30: |
| /* Sector erase */ |
| p = pfl->storage; |
| offset &= ~(pfl->sector_len - 1); |
| DPRINTF("%s: start sector erase at " TARGET_FMT_plx "\n", __func__, |
| offset); |
| if (!pfl->ro) { |
| memset(p + offset, 0xFF, pfl->sector_len); |
| pflash_update(pfl, offset, pfl->sector_len); |
| } |
| pfl->status = 0x00; |
| /* Let's wait 1/2 second before sector erase is done */ |
| timer_mod(pfl->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
| (NANOSECONDS_PER_SECOND / 2)); |
| break; |
| default: |
| DPRINTF("%s: invalid command %02x (wc 5)\n", __func__, cmd); |
| goto reset_flash; |
| } |
| pfl->cmd = cmd; |
| break; |
| case 6: |
| switch (pfl->cmd) { |
| case 0x10: |
| /* Ignore writes during chip erase */ |
| return; |
| case 0x30: |
| /* Ignore writes during sector erase */ |
| return; |
| default: |
| /* Should never happen */ |
| DPRINTF("%s: invalid command state %02x (wc 6)\n", |
| __func__, pfl->cmd); |
| goto reset_flash; |
| } |
| break; |
| case 7: /* Special value for CFI queries */ |
| DPRINTF("%s: invalid write in CFI query mode\n", __func__); |
| goto reset_flash; |
| default: |
| /* Should never happen */ |
| DPRINTF("%s: invalid write state (wc 7)\n", __func__); |
| goto reset_flash; |
| } |
| pfl->wcycle++; |
| |
| return; |
| |
| /* Reset flash */ |
| reset_flash: |
| pfl->bypass = 0; |
| pfl->wcycle = 0; |
| pfl->cmd = 0; |
| return; |
| |
| do_bypass: |
| pfl->wcycle = 2; |
| pfl->cmd = 0; |
| } |
| |
| |
| static uint32_t pflash_readb_be(void *opaque, hwaddr addr) |
| { |
| return pflash_read(opaque, addr, 1, 1); |
| } |
| |
| static uint32_t pflash_readb_le(void *opaque, hwaddr addr) |
| { |
| return pflash_read(opaque, addr, 1, 0); |
| } |
| |
| static uint32_t pflash_readw_be(void *opaque, hwaddr addr) |
| { |
| pflash_t *pfl = opaque; |
| |
| return pflash_read(pfl, addr, 2, 1); |
| } |
| |
| static uint32_t pflash_readw_le(void *opaque, hwaddr addr) |
| { |
| pflash_t *pfl = opaque; |
| |
| return pflash_read(pfl, addr, 2, 0); |
| } |
| |
| static uint32_t pflash_readl_be(void *opaque, hwaddr addr) |
| { |
| pflash_t *pfl = opaque; |
| |
| return pflash_read(pfl, addr, 4, 1); |
| } |
| |
| static uint32_t pflash_readl_le(void *opaque, hwaddr addr) |
| { |
| pflash_t *pfl = opaque; |
| |
| return pflash_read(pfl, addr, 4, 0); |
| } |
| |
| static void pflash_writeb_be(void *opaque, hwaddr addr, |
| uint32_t value) |
| { |
| pflash_write(opaque, addr, value, 1, 1); |
| } |
| |
| static void pflash_writeb_le(void *opaque, hwaddr addr, |
| uint32_t value) |
| { |
| pflash_write(opaque, addr, value, 1, 0); |
| } |
| |
| static void pflash_writew_be(void *opaque, hwaddr addr, |
| uint32_t value) |
| { |
| pflash_t *pfl = opaque; |
| |
| pflash_write(pfl, addr, value, 2, 1); |
| } |
| |
| static void pflash_writew_le(void *opaque, hwaddr addr, |
| uint32_t value) |
| { |
| pflash_t *pfl = opaque; |
| |
| pflash_write(pfl, addr, value, 2, 0); |
| } |
| |
| static void pflash_writel_be(void *opaque, hwaddr addr, |
| uint32_t value) |
| { |
| pflash_t *pfl = opaque; |
| |
| pflash_write(pfl, addr, value, 4, 1); |
| } |
| |
| static void pflash_writel_le(void *opaque, hwaddr addr, |
| uint32_t value) |
| { |
| pflash_t *pfl = opaque; |
| |
| pflash_write(pfl, addr, value, 4, 0); |
| } |
| |
| static const MemoryRegionOps pflash_cfi02_ops_be = { |
| .old_mmio = { |
| .read = { pflash_readb_be, pflash_readw_be, pflash_readl_be, }, |
| .write = { pflash_writeb_be, pflash_writew_be, pflash_writel_be, }, |
| }, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| }; |
| |
| static const MemoryRegionOps pflash_cfi02_ops_le = { |
| .old_mmio = { |
| .read = { pflash_readb_le, pflash_readw_le, pflash_readl_le, }, |
| .write = { pflash_writeb_le, pflash_writew_le, pflash_writel_le, }, |
| }, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| }; |
| |
| static void pflash_cfi02_realize(DeviceState *dev, Error **errp) |
| { |
| pflash_t *pfl = CFI_PFLASH02(dev); |
| uint32_t chip_len; |
| int ret; |
| Error *local_err = NULL; |
| |
| if (pfl->sector_len == 0) { |
| error_setg(errp, "attribute \"sector-length\" not specified or zero."); |
| return; |
| } |
| if (pfl->nb_blocs == 0) { |
| error_setg(errp, "attribute \"num-blocks\" not specified or zero."); |
| return; |
| } |
| if (pfl->name == NULL) { |
| error_setg(errp, "attribute \"name\" not specified."); |
| return; |
| } |
| |
| chip_len = pfl->sector_len * pfl->nb_blocs; |
| /* XXX: to be fixed */ |
| #if 0 |
| if (total_len != (8 * 1024 * 1024) && total_len != (16 * 1024 * 1024) && |
| total_len != (32 * 1024 * 1024) && total_len != (64 * 1024 * 1024)) |
| return NULL; |
| #endif |
| |
| memory_region_init_rom_device(&pfl->orig_mem, OBJECT(pfl), pfl->be ? |
| &pflash_cfi02_ops_be : &pflash_cfi02_ops_le, |
| pfl, pfl->name, chip_len, &local_err); |
| if (local_err) { |
| error_propagate(errp, local_err); |
| return; |
| } |
| |
| vmstate_register_ram(&pfl->orig_mem, DEVICE(pfl)); |
| pfl->storage = memory_region_get_ram_ptr(&pfl->orig_mem); |
| pfl->chip_len = chip_len; |
| |
| if (pfl->blk) { |
| uint64_t perm; |
| pfl->ro = blk_is_read_only(pfl->blk); |
| perm = BLK_PERM_CONSISTENT_READ | (pfl->ro ? 0 : BLK_PERM_WRITE); |
| ret = blk_set_perm(pfl->blk, perm, BLK_PERM_ALL, errp); |
| if (ret < 0) { |
| return; |
| } |
| } else { |
| pfl->ro = 0; |
| } |
| |
| if (pfl->blk) { |
| /* read the initial flash content */ |
| ret = blk_pread(pfl->blk, 0, pfl->storage, chip_len); |
| if (ret < 0) { |
| vmstate_unregister_ram(&pfl->orig_mem, DEVICE(pfl)); |
| error_setg(errp, "failed to read the initial flash content"); |
| return; |
| } |
| } |
| |
| pflash_setup_mappings(pfl); |
| pfl->rom_mode = 1; |
| sysbus_init_mmio(SYS_BUS_DEVICE(dev), &pfl->mem); |
| |
| pfl->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, pflash_timer, pfl); |
| pfl->wcycle = 0; |
| pfl->cmd = 0; |
| pfl->status = 0; |
| /* Hardcoded CFI table (mostly from SG29 Spansion flash) */ |
| pfl->cfi_len = 0x52; |
| /* Standard "QRY" string */ |
| pfl->cfi_table[0x10] = 'Q'; |
| pfl->cfi_table[0x11] = 'R'; |
| pfl->cfi_table[0x12] = 'Y'; |
| /* Command set (AMD/Fujitsu) */ |
| pfl->cfi_table[0x13] = 0x02; |
| pfl->cfi_table[0x14] = 0x00; |
| /* Primary extended table address */ |
| pfl->cfi_table[0x15] = 0x31; |
| pfl->cfi_table[0x16] = 0x00; |
| /* Alternate command set (none) */ |
| pfl->cfi_table[0x17] = 0x00; |
| pfl->cfi_table[0x18] = 0x00; |
| /* Alternate extended table (none) */ |
| pfl->cfi_table[0x19] = 0x00; |
| pfl->cfi_table[0x1A] = 0x00; |
| /* Vcc min */ |
| pfl->cfi_table[0x1B] = 0x27; |
| /* Vcc max */ |
| pfl->cfi_table[0x1C] = 0x36; |
| /* Vpp min (no Vpp pin) */ |
| pfl->cfi_table[0x1D] = 0x00; |
| /* Vpp max (no Vpp pin) */ |
| pfl->cfi_table[0x1E] = 0x00; |
| /* Reserved */ |
| pfl->cfi_table[0x1F] = 0x07; |
| /* Timeout for min size buffer write (NA) */ |
| pfl->cfi_table[0x20] = 0x00; |
| /* Typical timeout for block erase (512 ms) */ |
| pfl->cfi_table[0x21] = 0x09; |
| /* Typical timeout for full chip erase (4096 ms) */ |
| pfl->cfi_table[0x22] = 0x0C; |
| /* Reserved */ |
| pfl->cfi_table[0x23] = 0x01; |
| /* Max timeout for buffer write (NA) */ |
| pfl->cfi_table[0x24] = 0x00; |
| /* Max timeout for block erase */ |
| pfl->cfi_table[0x25] = 0x0A; |
| /* Max timeout for chip erase */ |
| pfl->cfi_table[0x26] = 0x0D; |
| /* Device size */ |
| pfl->cfi_table[0x27] = ctz32(chip_len); |
| /* Flash device interface (8 & 16 bits) */ |
| pfl->cfi_table[0x28] = 0x02; |
| pfl->cfi_table[0x29] = 0x00; |
| /* Max number of bytes in multi-bytes write */ |
| /* XXX: disable buffered write as it's not supported */ |
| // pfl->cfi_table[0x2A] = 0x05; |
| pfl->cfi_table[0x2A] = 0x00; |
| pfl->cfi_table[0x2B] = 0x00; |
| /* Number of erase block regions (uniform) */ |
| pfl->cfi_table[0x2C] = 0x01; |
| /* Erase block region 1 */ |
| pfl->cfi_table[0x2D] = pfl->nb_blocs - 1; |
| pfl->cfi_table[0x2E] = (pfl->nb_blocs - 1) >> 8; |
| pfl->cfi_table[0x2F] = pfl->sector_len >> 8; |
| pfl->cfi_table[0x30] = pfl->sector_len >> 16; |
| |
| /* Extended */ |
| pfl->cfi_table[0x31] = 'P'; |
| pfl->cfi_table[0x32] = 'R'; |
| pfl->cfi_table[0x33] = 'I'; |
| |
| pfl->cfi_table[0x34] = '1'; |
| pfl->cfi_table[0x35] = '0'; |
| |
| pfl->cfi_table[0x36] = 0x00; |
| pfl->cfi_table[0x37] = 0x00; |
| pfl->cfi_table[0x38] = 0x00; |
| pfl->cfi_table[0x39] = 0x00; |
| |
| pfl->cfi_table[0x3a] = 0x00; |
| |
| pfl->cfi_table[0x3b] = 0x00; |
| pfl->cfi_table[0x3c] = 0x00; |
| } |
| |
| static Property pflash_cfi02_properties[] = { |
| DEFINE_PROP_DRIVE("drive", struct pflash_t, blk), |
| DEFINE_PROP_UINT32("num-blocks", struct pflash_t, nb_blocs, 0), |
| DEFINE_PROP_UINT32("sector-length", struct pflash_t, sector_len, 0), |
| DEFINE_PROP_UINT8("width", struct pflash_t, width, 0), |
| DEFINE_PROP_UINT8("mappings", struct pflash_t, mappings, 0), |
| DEFINE_PROP_UINT8("big-endian", struct pflash_t, be, 0), |
| DEFINE_PROP_UINT16("id0", struct pflash_t, ident0, 0), |
| DEFINE_PROP_UINT16("id1", struct pflash_t, ident1, 0), |
| DEFINE_PROP_UINT16("id2", struct pflash_t, ident2, 0), |
| DEFINE_PROP_UINT16("id3", struct pflash_t, ident3, 0), |
| DEFINE_PROP_UINT16("unlock-addr0", struct pflash_t, unlock_addr0, 0), |
| DEFINE_PROP_UINT16("unlock-addr1", struct pflash_t, unlock_addr1, 0), |
| DEFINE_PROP_STRING("name", struct pflash_t, name), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void pflash_cfi02_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| dc->realize = pflash_cfi02_realize; |
| dc->props = pflash_cfi02_properties; |
| set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
| } |
| |
| static const TypeInfo pflash_cfi02_info = { |
| .name = TYPE_CFI_PFLASH02, |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_size = sizeof(struct pflash_t), |
| .class_init = pflash_cfi02_class_init, |
| }; |
| |
| static void pflash_cfi02_register_types(void) |
| { |
| type_register_static(&pflash_cfi02_info); |
| } |
| |
| type_init(pflash_cfi02_register_types) |
| |
| pflash_t *pflash_cfi02_register(hwaddr base, |
| DeviceState *qdev, const char *name, |
| hwaddr size, |
| BlockBackend *blk, uint32_t sector_len, |
| int nb_blocs, int nb_mappings, int width, |
| uint16_t id0, uint16_t id1, |
| uint16_t id2, uint16_t id3, |
| uint16_t unlock_addr0, uint16_t unlock_addr1, |
| int be) |
| { |
| DeviceState *dev = qdev_create(NULL, TYPE_CFI_PFLASH02); |
| |
| if (blk) { |
| qdev_prop_set_drive(dev, "drive", blk, &error_abort); |
| } |
| qdev_prop_set_uint32(dev, "num-blocks", nb_blocs); |
| qdev_prop_set_uint32(dev, "sector-length", sector_len); |
| qdev_prop_set_uint8(dev, "width", width); |
| qdev_prop_set_uint8(dev, "mappings", nb_mappings); |
| qdev_prop_set_uint8(dev, "big-endian", !!be); |
| qdev_prop_set_uint16(dev, "id0", id0); |
| qdev_prop_set_uint16(dev, "id1", id1); |
| qdev_prop_set_uint16(dev, "id2", id2); |
| qdev_prop_set_uint16(dev, "id3", id3); |
| qdev_prop_set_uint16(dev, "unlock-addr0", unlock_addr0); |
| qdev_prop_set_uint16(dev, "unlock-addr1", unlock_addr1); |
| qdev_prop_set_string(dev, "name", name); |
| qdev_init_nofail(dev); |
| |
| sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); |
| return CFI_PFLASH02(dev); |
| } |