Add support for SST READ ID 0x90/0xAB commands for reading out the flash
manufacuter ID and device ID.
Signed-off-by: Francisco Iglesias <address@hidden>
Acked-by: Alistair Francis <address@hidden>
---
hw/block/m25p80.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 2971519..7a5c137 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -355,6 +355,8 @@ typedef enum {
DPP = 0xa2,
QPP = 0x32,
QPP_4 = 0x34,
+ RDID_90 = 0x90,
+ RDID_AB = 0xab,
ERASE_4K = 0x20,
ERASE4_4K = 0x21,
@@ -405,6 +407,7 @@ typedef enum {
MAN_MACRONIX,
MAN_NUMONYX,
MAN_WINBOND,
+ MAN_SST,
MAN_GENERIC,
} Manufacturer;
@@ -476,6 +479,8 @@ static inline Manufacturer get_man(Flash *s)
return MAN_SPANSION;
case 0xC2:
return MAN_MACRONIX;
+ case 0xBF:
+ return MAN_SST;
default:
return MAN_GENERIC;
}
@@ -711,6 +716,22 @@ static void complete_collecting_data(Flash *s)
case WEVCR:
s->enh_volatile_cfg = s->data[0];
break;
+ case RDID_90:
+ case RDID_AB:
+ if (get_man(s) == MAN_SST && s->cur_addr <= 1) {
+ if (s->cur_addr) {
+ s->data[0] = s->pi->id[2];
+ s->data[1] = s->pi->id[0];
+ } else {
+ s->data[0] = s->pi->id[0];
+ s->data[1] = s->pi->id[2];
+ }
+ s->pos = 0;
+ s->len = 2;
+ s->data_read_loop = true;
+ s->state = STATE_READING_DATA;
+ }
+ break;
default:
break;
}
@@ -926,6 +947,8 @@ static void decode_new_cmd(Flash *s, uint32_t value)
case PP4:
case PP4_4:
case DIE_ERASE:
+ case RDID_90:
+ case RDID_AB:
s->needed_bytes = get_addr_length(s);