[Qemu-devel] [PATCH v4 09/11] block: m25p80: Implemented FSR register

[marcin.krzeminski@nokia.com]

From: Marcin Krzeminski <marcin.krzeminski@nokia.com>

Implements FSR register, it is used for busy waits.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
---
 hw/block/m25p80.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 4acc79a..bc0dadb 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -222,6 +222,7 @@ typedef enum {
     WREN = 0x6,
     JEDEC_READ = 0x9f,
     BULK_ERASE = 0xc7,
+    READ_FSR = 0x70,
 
     READ = 0x3,
     READ4 = 0x13,
@@ -678,6 +679,16 @@ static void decode_new_cmd(Flash *s, uint32_t value)
         s->state = STATE_READING_DATA;
         break;
 
+    case READ_FSR:
+        s->data[0] = (1 << 7); /*Indicates flash is ready */
+        if (s->four_bytes_address_mode) {
+            s->data[0] |= 0x1;
+        }
+        s->pos = 0;
+        s->len = 1;
+        s->state = STATE_READING_DATA;
+        break;
+
     case JEDEC_READ:
         DB_PRINT_L(0, "populated jedec code\n");
         s->data[0] = (s->pi->jedec >> 16) & 0xff;
-- 
2.5.0