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-rw-r--r--hw/block/m25p80.c70
1 files changed, 65 insertions, 5 deletions
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 9ea38d94d8..28725db894 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -281,6 +281,7 @@ typedef enum {
JEDEC_READ = 0x9f,
BULK_ERASE = 0xc7,
READ_FSR = 0x70,
+ RDCR = 0x15,
READ = 0x03,
READ4 = 0x13,
@@ -317,6 +318,13 @@ typedef enum {
RESET_ENABLE = 0x66,
RESET_MEMORY = 0x99,
+ /*
+ * Micron: 0x35 - enable QPI
+ * Spansion: 0x35 - read control register
+ */
+ RDCR_EQIO = 0x35,
+ RSTQIO = 0xf5,
+
RNVCR = 0xB5,
WNVCR = 0xB1,
@@ -366,6 +374,7 @@ typedef struct Flash {
bool write_enable;
bool four_bytes_address_mode;
bool reset_enable;
+ bool quad_enable;
uint8_t ear;
int64_t dirty_page;
@@ -586,6 +595,16 @@ static void complete_collecting_data(Flash *s)
flash_erase(s, s->cur_addr, s->cmd_in_progress);
break;
case WRSR:
+ switch (get_man(s)) {
+ case MAN_SPANSION:
+ s->quad_enable = !!(s->data[1] & 0x02);
+ break;
+ case MAN_MACRONIX:
+ s->quad_enable = extract32(s->data[0], 6, 1);
+ break;
+ default:
+ break;
+ }
if (s->write_enable) {
s->write_enable = false;
}
@@ -619,6 +638,7 @@ static void reset_memory(Flash *s)
s->state = STATE_IDLE;
s->write_enable = false;
s->reset_enable = false;
+ s->quad_enable = false;
switch (get_man(s)) {
case MAN_NUMONYX:
@@ -747,10 +767,20 @@ static void decode_new_cmd(Flash *s, uint32_t value)
case WRSR:
if (s->write_enable) {
- s->needed_bytes = 1;
+ switch (get_man(s)) {
+ case MAN_SPANSION:
+ s->needed_bytes = 2;
+ s->state = STATE_COLLECTING_DATA;
+ break;
+ case MAN_MACRONIX:
+ s->needed_bytes = 2;
+ s->state = STATE_COLLECTING_VAR_LEN_DATA;
+ break;
+ default:
+ s->needed_bytes = 1;
+ s->state = STATE_COLLECTING_DATA;
+ }
s->pos = 0;
- s->len = 0;
- s->state = STATE_COLLECTING_DATA;
}
break;
@@ -763,6 +793,9 @@ static void decode_new_cmd(Flash *s, uint32_t value)
case RDSR:
s->data[0] = (!!s->write_enable) << 1;
+ if (get_man(s) == MAN_MACRONIX) {
+ s->data[0] |= (!!s->quad_enable) << 6;
+ }
s->pos = 0;
s->len = 1;
s->state = STATE_READING_DATA;
@@ -789,6 +822,14 @@ static void decode_new_cmd(Flash *s, uint32_t value)
s->state = STATE_READING_DATA;
break;
+ case RDCR:
+ s->data[0] = s->volatile_cfg & 0xFF;
+ s->data[0] |= (!!s->four_bytes_address_mode) << 5;
+ s->pos = 0;
+ s->len = 1;
+ s->state = STATE_READING_DATA;
+ break;
+
case BULK_ERASE:
if (s->write_enable) {
DB_PRINT_L(0, "chip erase\n");
@@ -828,7 +869,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
s->state = STATE_READING_DATA;
break;
case WNVCR:
- if (s->write_enable) {
+ if (s->write_enable && get_man(s) == MAN_NUMONYX) {
s->needed_bytes = 2;
s->pos = 0;
s->len = 0;
@@ -871,6 +912,24 @@ static void decode_new_cmd(Flash *s, uint32_t value)
reset_memory(s);
}
break;
+ case RDCR_EQIO:
+ switch (get_man(s)) {
+ case MAN_SPANSION:
+ s->data[0] = (!!s->quad_enable) << 1;
+ s->pos = 0;
+ s->len = 1;
+ s->state = STATE_READING_DATA;
+ break;
+ case MAN_MACRONIX:
+ s->quad_enable = true;
+ break;
+ default:
+ break;
+ }
+ break;
+ case RSTQIO:
+ s->quad_enable = false;
+ break;
default:
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Unknown cmd %x\n", value);
break;
@@ -999,7 +1058,7 @@ static Property m25p80_properties[] = {
static const VMStateDescription vmstate_m25p80 = {
.name = "xilinx_spi",
- .version_id = 2,
+ .version_id = 3,
.minimum_version_id = 1,
.pre_save = m25p80_pre_save,
.fields = (VMStateField[]) {
@@ -1017,6 +1076,7 @@ static const VMStateDescription vmstate_m25p80 = {
VMSTATE_UINT32_V(nonvolatile_cfg, Flash, 2),
VMSTATE_UINT32_V(volatile_cfg, Flash, 2),
VMSTATE_UINT32_V(enh_volatile_cfg, Flash, 2),
+ VMSTATE_BOOL_V(quad_enable, Flash, 3),
VMSTATE_END_OF_LIST()
}
};