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m25p80: Fast read commands family changes.

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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>
This commit is contained in:
Marcin Krzeminski 2016-06-27 15:37:34 +01:00 • committed by Peter Maydell
parent d9cc8701f1
commit cf6f1efe0b
1 changed files with 117 additions and 37 deletions
Download patch file Download diff file Expand all files Collapse all files

154
hw/block/m25p80.c
View file

@ -142,6 +142,13 @@ typedef struct FlashPartInfo {
#define SPANSION_ADDR_LEN_POS 7 #define SPANSION_ADDR_LEN_POS 7
#define SPANSION_ADDR_LEN_LEN 1 #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[] = { static const FlashPartInfo known_devices[] = {
/* Atmel -- some are (confusingly) marketed as "DataFlash" */ /* Atmel -- some are (confusingly) marketed as "DataFlash" */
{ INFO("at25fs010", 0x1f6601, 0, 32 << 10, 4, ER_4K) }, { 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"); 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) static void decode_new_cmd(Flash *s, uint32_t value)
{ {
s->cmd_in_progress = value; s->cmd_in_progress = value;
@ -756,51 +870,17 @@ static void decode_new_cmd(Flash *s, uint32_t value)
case DOR4: case DOR4:
case QOR: case QOR:
case QOR4: case QOR4:
s->needed_bytes = get_addr_length(s); decode_fast_read_cmd(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;
break; break;
case DIOR: case DIOR:
case DIOR4: case DIOR4:
switch (get_man(s)) { decode_dio_read_cmd(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;
break; break;
case QIOR: case QIOR:
case QIOR4: case QIOR4:
switch (get_man(s)) { decode_qio_read_cmd(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;
break; break;
case WRSR: case WRSR: