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hw/block/m25p80: Check SPI mode before running some Numonyx commands

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Some Numonyx flash commands cannot be executed in DIO and QIO mode, such as
trying to do DPP or DOR when in QIO mode.

Signed-off-by: Joe Komlodi <komlodi@xilinx.com>
Reviewed-by: Francisco Iglesias <francisco.iglesias@xilinx.com>
Message-id: 1605568264-26376-4-git-send-email-komlodi@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Joe Komlodi 2020-11-16 15:11:03 -08:00 committed by Peter Maydell
parent fc5df349da
commit 2348623117
1 changed files with 95 additions and 19 deletions
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114
hw/block/m25p80.c
View File

@ -413,6 +413,12 @@ typedef enum {
MAN_GENERIC,
} Manufacturer;
typedef enum {
MODE_STD = 0,
MODE_DIO = 1,
MODE_QIO = 2
} SPIMode;
#define M25P80_INTERNAL_DATA_BUFFER_SZ 16
struct Flash {
@ -820,6 +826,17 @@ static void reset_memory(Flash *s)
trace_m25p80_reset_done(s);
}
static uint8_t numonyx_mode(Flash *s)
{
if (!(s->enh_volatile_cfg & EVCFG_QUAD_IO_DISABLED)) {
return MODE_QIO;
} else if (!(s->enh_volatile_cfg & EVCFG_DUAL_IO_DISABLED)) {
return MODE_DIO;
} else {
return MODE_STD;
}
}
static void decode_fast_read_cmd(Flash *s)
{
s->needed_bytes = get_addr_length(s);
@ -950,14 +967,8 @@ static void decode_new_cmd(Flash *s, uint32_t value)
case ERASE4_32K:
case ERASE_SECTOR:
case ERASE4_SECTOR:
case READ:
case READ4:
case DPP:
case QPP:
case QPP_4:
case PP:
case PP4:
case PP4_4:
case DIE_ERASE:
case RDID_90:
case RDID_AB:
@ -966,24 +977,84 @@ static void decode_new_cmd(Flash *s, uint32_t value)
s->len = 0;
s->state = STATE_COLLECTING_DATA;
break;
case READ:
case READ4:
if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) == MODE_STD) {
s->needed_bytes = get_addr_length(s);
s->pos = 0;
s->len = 0;
s->state = STATE_COLLECTING_DATA;
} else {
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
"DIO or QIO mode\n", s->cmd_in_progress);
}
break;
case DPP:
if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_QIO) {
s->needed_bytes = get_addr_length(s);
s->pos = 0;
s->len = 0;
s->state = STATE_COLLECTING_DATA;
} else {
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
"QIO mode\n", s->cmd_in_progress);
}
break;
case QPP:
case QPP_4:
case PP4_4:
if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_DIO) {
s->needed_bytes = get_addr_length(s);
s->pos = 0;
s->len = 0;
s->state = STATE_COLLECTING_DATA;
} else {
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
"DIO mode\n", s->cmd_in_progress);
}
break;
case FAST_READ:
case FAST_READ4:
decode_fast_read_cmd(s);
break;
case DOR:
case DOR4:
if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_QIO) {
decode_fast_read_cmd(s);
} else {
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
"QIO mode\n", s->cmd_in_progress);
}
break;
case QOR:
case QOR4:
decode_fast_read_cmd(s);
if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_DIO) {
decode_fast_read_cmd(s);
} else {
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
"DIO mode\n", s->cmd_in_progress);
}
break;
case DIOR:
case DIOR4:
decode_dio_read_cmd(s);
if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_QIO) {
decode_dio_read_cmd(s);
} else {
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
"QIO mode\n", s->cmd_in_progress);
}
break;
case QIOR:
case QIOR4:
decode_qio_read_cmd(s);
if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_DIO) {
decode_qio_read_cmd(s);
} else {
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
"DIO mode\n", s->cmd_in_progress);
}
break;
case WRSR:
@ -1035,17 +1106,22 @@ static void decode_new_cmd(Flash *s, uint32_t value)
break;
case JEDEC_READ:
trace_m25p80_populated_jedec(s);
for (i = 0; i < s->pi->id_len; i++) {
s->data[i] = s->pi->id[i];
}
for (; i < SPI_NOR_MAX_ID_LEN; i++) {
s->data[i] = 0;
}
if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) == MODE_STD) {
trace_m25p80_populated_jedec(s);
for (i = 0; i < s->pi->id_len; i++) {
s->data[i] = s->pi->id[i];
}
for (; i < SPI_NOR_MAX_ID_LEN; i++) {
s->data[i] = 0;
}
s->len = SPI_NOR_MAX_ID_LEN;
s->pos = 0;
s->state = STATE_READING_DATA;
s->len = SPI_NOR_MAX_ID_LEN;
s->pos = 0;
s->state = STATE_READING_DATA;
} else {
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute JEDEC read "
"in DIO or QIO mode\n");
}
break;
case RDCR: