[Qemu-devel] [PATCH v2 4/9] hw/block/pflash_cfi01: Start state machine as READY to accept commands

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

When the state machine is ready to accept command, the bit 7 of
the status register (SR) is set to 1.
The guest polls the status register and check this bit before
writting command to the internal 'Write State Machine' (WSM).

Set SR.7 bit to 1 when the device is created.

Reference: Read Array Flowchart
  "Common Flash Interface (CFI) and Command Sets"
   (Intel Application Note 646)
   Appendix B "Basic Command Set"

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/block/pflash_cfi01.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
index 33c77f6569..dd1dfd266b 100644
--- a/hw/block/pflash_cfi01.c
+++ b/hw/block/pflash_cfi01.c
@@ -764,7 +764,7 @@ static void pflash_cfi01_realize(DeviceState *dev, Error **errp)
     }
 
     pflash_mode_read_array(pfl);
-    pfl->status = 0;
+    pfl->status = 0x80; /* WSM ready */
     /* Hardcoded CFI table */
     /* Standard "QRY" string */
     pfl->cfi_table[0x10] = 'Q';
-- 
2.20.1