diff options
Diffstat (limited to 'hw/block/m25p80.c')
| -rw-r--r-- | hw/block/m25p80.c | 63 |
1 files changed, 54 insertions, 9 deletions
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index f7123f9e68..e2e84f8b5f 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -61,7 +61,8 @@ typedef struct FlashPartInfo { */ uint8_t id[SPI_NOR_MAX_ID_LEN]; uint8_t id_len; - /* there is confusion between manufacturers as to what a sector is. In this + /* + * there is confusion between manufacturers as to what a sector is. In this * device model, a "sector" is the size that is erased by the ERASE_SECTOR * command (opcode 0xd8). */ @@ -168,7 +169,7 @@ typedef struct FlashPartInfo { /* * Spansion read mode command length in bytes, * the mode is currently not supported. -*/ + */ #define SPANSION_CONTINUOUS_READ_MODE_CMD_LEN 1 #define WINBOND_CONTINUOUS_READ_MODE_CMD_LEN 1 @@ -189,7 +190,8 @@ static const FlashPartInfo known_devices[] = { { INFO("at45db081d", 0x1f2500, 0, 64 << 10, 16, ER_4K) }, - /* Atmel EEPROMS - it is assumed, that don't care bit in command + /* + * Atmel EEPROMS - it is assumed, that don't care bit in command * is set to 0. Block protection is not supported. */ { INFO("at25128a-nonjedec", 0x0, 0, 1, 131072, EEPROM) }, @@ -275,10 +277,13 @@ static const FlashPartInfo known_devices[] = { { INFO_STACKED("n25q00a", 0x20bb21, 0x1000, 64 << 10, 2048, ER_4K, 4) }, { INFO_STACKED("mt25ql01g", 0x20ba21, 0x1040, 64 << 10, 2048, ER_4K, 2) }, { INFO_STACKED("mt25qu01g", 0x20bb21, 0x1040, 64 << 10, 2048, ER_4K, 2) }, - { INFO_STACKED("mt25ql02g", 0x20ba22, 0x1040, 64 << 10, 4096, ER_4K | ER_32K, 2) }, - { INFO_STACKED("mt25qu02g", 0x20bb22, 0x1040, 64 << 10, 4096, ER_4K | ER_32K, 2) }, + { INFO_STACKED("mt25ql02g", 0x20ba22, 0x1040, 64 << 10, 4096, + ER_4K | ER_32K, 2) }, + { INFO_STACKED("mt25qu02g", 0x20bb22, 0x1040, 64 << 10, 4096, + ER_4K | ER_32K, 2) }, - /* Spansion -- single (large) sector size only, at least + /* + * Spansion -- single (large) sector size only, at least * for the chips listed here (without boot sectors). */ { INFO("s25sl032p", 0x010215, 0x4d00, 64 << 10, 64, ER_4K) }, @@ -351,7 +356,8 @@ static const FlashPartInfo known_devices[] = { { INFO("w25x64", 0xef3017, 0, 64 << 10, 128, ER_4K) }, { INFO("w25q64", 0xef4017, 0, 64 << 10, 128, ER_4K) }, { INFO("w25q80", 0xef5014, 0, 64 << 10, 16, ER_4K) }, - { INFO("w25q80bl", 0xef4014, 0, 64 << 10, 16, ER_4K) }, + { INFO("w25q80bl", 0xef4014, 0, 64 << 10, 16, ER_4K), + .sfdp_read = m25p80_sfdp_w25q80bl }, { INFO("w25q256", 0xef4019, 0, 64 << 10, 512, ER_4K), .sfdp_read = m25p80_sfdp_w25q256 }, { INFO("w25q512jv", 0xef4020, 0, 64 << 10, 1024, ER_4K), @@ -425,6 +431,11 @@ typedef enum { RDCR_EQIO = 0x35, RSTQIO = 0xf5, + /* + * Winbond: 0x31 - write status register 2 + */ + WRSR2 = 0x31, + RNVCR = 0xB5, WNVCR = 0xB1, @@ -549,7 +560,8 @@ static void blk_sync_complete(void *opaque, int ret) qemu_iovec_destroy(iov); g_free(iov); - /* do nothing. Masters do not directly interact with the backing store, + /* + * do nothing. Masters do not directly interact with the backing store, * only the working copy so no mutexing required. */ } @@ -815,6 +827,15 @@ static void complete_collecting_data(Flash *s) s->write_enable = false; } break; + case WRSR2: + switch (get_man(s)) { + case MAN_WINBOND: + s->quad_enable = !!(s->data[0] & 0x02); + break; + default: + break; + } + break; case BRWR: case EXTEND_ADDR_WRITE: s->ear = s->data[0]; @@ -1274,7 +1295,31 @@ static void decode_new_cmd(Flash *s, uint32_t value) } s->pos = 0; break; + case WRSR2: + /* + * If WP# is low and status_register_write_disabled is high, + * status register writes are disabled. + * This is also called "hardware protected mode" (HPM). All other + * combinations of the two states are called "software protected mode" + * (SPM), and status register writes are permitted. + */ + if ((s->wp_level == 0 && s->status_register_write_disabled) + || !s->write_enable) { + qemu_log_mask(LOG_GUEST_ERROR, + "M25P80: Status register 2 write is disabled!\n"); + break; + } + switch (get_man(s)) { + case MAN_WINBOND: + s->needed_bytes = 1; + s->state = STATE_COLLECTING_DATA; + s->pos = 0; + break; + default: + break; + } + break; case WRDI: s->write_enable = false; if (get_man(s) == MAN_SST) { @@ -1843,7 +1888,7 @@ static void m25p80_register_types(void) type_register_static(&m25p80_info); for (i = 0; i < ARRAY_SIZE(known_devices); ++i) { - TypeInfo ti = { + const TypeInfo ti = { .name = known_devices[i].part_name, .parent = TYPE_M25P80, .class_init = m25p80_class_init, |