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author | Marcin Krzeminski <marcin.krzeminski@nokia.com> | 2016-06-27 15:37:34 +0100 |
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committer | Peter Maydell <peter.maydell@linaro.org> | 2016-06-27 15:37:34 +0100 |
commit | cf6f1efe0b573a89597a046631153c5bef20e80d (patch) | |
tree | 26872d842859becbe6775eefcb9d63b1cf974f3b /hw | |
parent | d9cc8701f16ed1c2224d0820d69cd5c5362c43df (diff) | |
download | qemu-cf6f1efe0b573a89597a046631153c5bef20e80d.zip qemu-cf6f1efe0b573a89597a046631153c5bef20e80d.tar.gz qemu-cf6f1efe0b573a89597a046631153c5bef20e80d.tar.bz2 |
m25p80: Fast read commands family changes.
Support for Spansion and Macronix flashes.
Additionally Numonyx(Micron) moved from default
in fast read commands family. Also moved fast read
command decoding to functions.
Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1466755631-25201-9-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw')
-rw-r--r-- | hw/block/m25p80.c | 154 |
1 files changed, 117 insertions, 37 deletions
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index bbb5999..0a790d5 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -142,6 +142,13 @@ typedef struct FlashPartInfo { #define SPANSION_ADDR_LEN_POS 7 #define SPANSION_ADDR_LEN_LEN 1 +/* + * Spansion read mode command length in bytes, + * the mode is currently not supported. +*/ + +#define SPANSION_CONTINUOUS_READ_MODE_CMD_LEN 1 + static const FlashPartInfo known_devices[] = { /* Atmel -- some are (confusingly) marketed as "DataFlash" */ { INFO("at25fs010", 0x1f6601, 0, 32 << 10, 4, ER_4K) }, @@ -719,6 +726,113 @@ static void reset_memory(Flash *s) DB_PRINT_L(0, "Reset done.\n"); } +static void decode_fast_read_cmd(Flash *s) +{ + s->needed_bytes = get_addr_length(s); + switch (get_man(s)) { + /* Dummy cycles - modeled with bytes writes instead of bits */ + case MAN_NUMONYX: + s->needed_bytes += extract32(s->volatile_cfg, 4, 4); + break; + case MAN_MACRONIX: + if (extract32(s->volatile_cfg, 6, 2) == 1) { + s->needed_bytes += 6; + } else { + s->needed_bytes += 8; + } + break; + case MAN_SPANSION: + s->needed_bytes += extract32(s->spansion_cr2v, + SPANSION_DUMMY_CLK_POS, + SPANSION_DUMMY_CLK_LEN + ); + break; + default: + break; + } + s->pos = 0; + s->len = 0; + s->state = STATE_COLLECTING_DATA; +} + +static void decode_dio_read_cmd(Flash *s) +{ + s->needed_bytes = get_addr_length(s); + /* Dummy cycles modeled with bytes writes instead of bits */ + switch (get_man(s)) { + case MAN_WINBOND: + s->needed_bytes = 4; + break; + case MAN_SPANSION: + s->needed_bytes += SPANSION_CONTINUOUS_READ_MODE_CMD_LEN; + s->needed_bytes += extract32(s->spansion_cr2v, + SPANSION_DUMMY_CLK_POS, + SPANSION_DUMMY_CLK_LEN + ); + break; + case MAN_NUMONYX: + s->needed_bytes += extract32(s->volatile_cfg, 4, 4); + break; + case MAN_MACRONIX: + switch (extract32(s->volatile_cfg, 6, 2)) { + case 1: + s->needed_bytes += 6; + break; + case 2: + s->needed_bytes += 8; + break; + default: + s->needed_bytes += 4; + break; + } + break; + default: + break; + } + s->pos = 0; + s->len = 0; + s->state = STATE_COLLECTING_DATA; +} + +static void decode_qio_read_cmd(Flash *s) +{ + s->needed_bytes = get_addr_length(s); + /* Dummy cycles modeled with bytes writes instead of bits */ + switch (get_man(s)) { + case MAN_WINBOND: + s->needed_bytes = 6; + break; + case MAN_SPANSION: + s->needed_bytes += SPANSION_CONTINUOUS_READ_MODE_CMD_LEN; + s->needed_bytes += extract32(s->spansion_cr2v, + SPANSION_DUMMY_CLK_POS, + SPANSION_DUMMY_CLK_LEN + ); + break; + case MAN_NUMONYX: + s->needed_bytes += extract32(s->volatile_cfg, 4, 4); + break; + case MAN_MACRONIX: + switch (extract32(s->volatile_cfg, 6, 2)) { + case 1: + s->needed_bytes += 4; + break; + case 2: + s->needed_bytes += 8; + break; + default: + s->needed_bytes += 6; + break; + } + break; + default: + break; + } + s->pos = 0; + s->len = 0; + s->state = STATE_COLLECTING_DATA; +} + static void decode_new_cmd(Flash *s, uint32_t value) { s->cmd_in_progress = value; @@ -756,51 +870,17 @@ static void decode_new_cmd(Flash *s, uint32_t value) case DOR4: case QOR: case QOR4: - s->needed_bytes = get_addr_length(s); - switch (get_man(s)) { - case MAN_NUMONYX: - s->needed_bytes += extract32(s->volatile_cfg, 4, 4); - break; - default: - break; - } - s->pos = 0; - s->len = 0; - s->state = STATE_COLLECTING_DATA; + decode_fast_read_cmd(s); break; case DIOR: case DIOR4: - switch (get_man(s)) { - case MAN_WINBOND: - case MAN_SPANSION: - s->needed_bytes = 4; - break; - default: - s->needed_bytes = get_addr_length(s); - /* Dummy cycles modeled with bytes writes instead of bits */ - s->needed_bytes += extract32(s->volatile_cfg, 4, 4); - } - s->pos = 0; - s->len = 0; - s->state = STATE_COLLECTING_DATA; + decode_dio_read_cmd(s); break; case QIOR: case QIOR4: - switch (get_man(s)) { - case MAN_WINBOND: - case MAN_SPANSION: - s->needed_bytes = 6; - break; - default: - s->needed_bytes = get_addr_length(s); - /* Dummy cycles modeled with bytes writes instead of bits */ - s->needed_bytes += extract32(s->volatile_cfg, 4, 4); - } - s->pos = 0; - s->len = 0; - s->state = STATE_COLLECTING_DATA; + decode_qio_read_cmd(s); break; case WRSR: |