Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 795 insertions, 0 deletions

diff --git a/qemu/hw/block/pflash_cfi02.c b/qemu/hw/block/pflash_cfi02.c
new file mode 100644
index 000000000..074a005f6
--- /dev/null
+++ b/qemu/hw/block/pflash_cfi02.c
@@ -0,0 +1,795 @@
+/*
+ *  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 "hw/hw.h"
+#include "hw/block/flash.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 TYPE_CFI_PFLASH02 "cfi.pflash02"
+#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;
+        /* round to sectors */
+        offset = offset >> 9;
+        offset_end = (offset_end + 511) >> 9;
+        blk_write(pfl->blk, offset, pfl->storage + (offset << 9),
+                  offset_end - offset);
+    }
+}
+
+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) + (get_ticks_per_sec() * 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) + (get_ticks_per_sec() / 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;
+
+    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) {
+        /* read the initial flash content */
+        ret = blk_read(pfl->blk, 0, pfl->storage, chip_len >> 9);
+        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);
+
+    if (pfl->blk) {
+        pfl->ro = blk_is_read_only(pfl->blk);
+    } else {
+        pfl->ro = 0;
+    }
+
+    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);
+}