[Qemu-devel] [PATCH v2 00/11] Support for N25Q256/512 and AT25128/256

[Qemu-devel] [PATCH v2 00/11] Support for N25Q256/512 and AT25128/256

[marcin.krzeminski]

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

V2:
- Removed support for mx66u51235 and s25fl512s from this series
- Corrected/implemented dummy cycles
- rebased to master

Model was tested on u-boot and kernel using custom qemu machine.

Marcin Krzeminski (11):
  block: m25p80: Removed unused variable
  block: m25p80: RESET_ENABLE and RESET_MEMORY commnads
  block: m25p80: Widen flags variable
  block: m25p80: Extend address mode
  block: m25p80: 4byte address mode
  block: m25p80: Add configuration registers
  block: m25p80: Dummy cycles for N25Q256/512
  block: m25p80: Fast read and 4bytes commands
  block: m25p80: Implemented FSR register
  block: m25p80: n25q256a/n25q512a models
  block: m25p80: at25128a/at25256a models

 hw/block/m25p80.c | 290 +++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 279 insertions(+), 11 deletions(-)

-- 
2.5.0

[Qemu-devel] [PATCH v2 01/11] block: m25p80: Removed unused variable

[marcin.krzeminski]

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

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
---
 hw/block/m25p80.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index de24f42..2222124 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -246,8 +246,6 @@ typedef enum {
 typedef struct Flash {
     SSISlave parent_obj;
 
-    uint32_t r;
-
     BlockBackend *blk;
 
     uint8_t *storage;
-- 
2.5.0

[Qemu-devel] [PATCH v2 02/11] block: m25p80: RESET_ENABLE and RESET_MEMORY commnads

[marcin.krzeminski]

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

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
---
 hw/block/m25p80.c | 36 +++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 2222124..b986df4 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -233,6 +233,9 @@ typedef enum {
     ERASE_4K = 0x20,
     ERASE_32K = 0x52,
     ERASE_SECTOR = 0xd8,
+
+    RESET_ENABLE = 0x66,
+    RESET_MEMORY = 0x99,
 } FlashCMD;
 
 typedef enum {
@@ -260,6 +263,7 @@ typedef struct Flash {
     uint8_t cmd_in_progress;
     uint64_t cur_addr;
     bool write_enable;
+    bool reset_enable;
 
     int64_t dirty_page;
 
@@ -432,11 +436,29 @@ static void complete_collecting_data(Flash *s)
     }
 }
 
+static void reset_memory(Flash *s)
+{
+    s->cmd_in_progress = NOP;
+    s->cur_addr = 0;
+    s->len = 0;
+    s->needed_bytes = 0;
+    s->pos = 0;
+    s->state = STATE_IDLE;
+    s->write_enable = false;
+    s->reset_enable = false;
+
+    DB_PRINT_L(0, "Reset done.\n");
+}
+
 static void decode_new_cmd(Flash *s, uint32_t value)
 {
     s->cmd_in_progress = value;
     DB_PRINT_L(0, "decoded new command:%x\n", value);
 
+    if (value != RESET_MEMORY) {
+        s->reset_enable = false;
+    }
+
     switch (value) {
 
     case ERASE_4K:
@@ -541,6 +563,14 @@ static void decode_new_cmd(Flash *s, uint32_t value)
         break;
     case NOP:
         break;
+    case RESET_ENABLE:
+        s->reset_enable = true;
+        break;
+    case RESET_MEMORY:
+        if (s->reset_enable) {
+            reset_memory(s);
+        }
+        break;
     default:
         qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Unknown cmd %x\n", value);
         break;
@@ -555,6 +585,7 @@ static int m25p80_cs(SSISlave *ss, bool select)
         s->len = 0;
         s->pos = 0;
         s->state = STATE_IDLE;
+        s->reset_enable = false;
         flash_sync_dirty(s, -1);
     }
 
@@ -622,6 +653,8 @@ static int m25p80_init(SSISlave *ss)
     s->size = s->pi->sector_size * s->pi->n_sectors;
     s->dirty_page = -1;
 
+    reset_memory(s);
+
     /* FIXME use a qdev drive property instead of drive_get_next() */
     dinfo = drive_get_next(IF_MTD);
 
@@ -654,7 +687,7 @@ static void m25p80_pre_save(void *opaque)
 
 static const VMStateDescription vmstate_m25p80 = {
     .name = "xilinx_spi",
-    .version_id = 1,
+    .version_id = 2,
     .minimum_version_id = 1,
     .pre_save = m25p80_pre_save,
     .fields = (VMStateField[]) {
@@ -666,6 +699,7 @@ static const VMStateDescription vmstate_m25p80 = {
         VMSTATE_UINT8(cmd_in_progress, Flash),
         VMSTATE_UINT64(cur_addr, Flash),
         VMSTATE_BOOL(write_enable, Flash),
+        VMSTATE_BOOL(reset_enable, Flash),
         VMSTATE_END_OF_LIST()
     }
 };
-- 
2.5.0

[Qemu-devel] [PATCH v2 03/11] block: m25p80: Widen flags variable

[marcin.krzeminski]

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

Extend the width of the flags variable to support the already existing
(but unused) WR_1 flag, which is above the range of 8 bits.
This allows support of EEPROM emulation which requires the WR_1 feature.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
---
 hw/block/m25p80.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index b986df4..f9088c5 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -61,7 +61,7 @@ typedef struct FlashPartInfo {
     uint32_t sector_size;
     uint32_t n_sectors;
     uint32_t page_size;
-    uint8_t flags;
+    uint16_t flags;
 } FlashPartInfo;
 
 /* adapted from linux */
-- 
2.5.0

[Qemu-devel] [PATCH v2 04/11] block: m25p80: Extend address mode

[marcin.krzeminski]

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

Extend address mode allows to switch flash 16 MiB banks,
allowing user to access all flash sectors.
This access mode is used by u-boot.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
---
 hw/block/m25p80.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index f9088c5..6b5f00d 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -48,6 +48,9 @@
  */
 #define WR_1 0x100
 
+/* 16 MiB max in 3 byte address mode */
+#define MAX_3BYTES_SIZE 0x1000000
+
 typedef struct FlashPartInfo {
     const char *part_name;
     /* jedec code. (jedec >> 16) & 0xff is the 1st byte, >> 8 the 2nd etc */
@@ -234,6 +237,9 @@ typedef enum {
     ERASE_32K = 0x52,
     ERASE_SECTOR = 0xd8,
 
+    EXTEND_ADDR_READ = 0xC8,
+    EXTEND_ADDR_WRITE = 0xC5,
+
     RESET_ENABLE = 0x66,
     RESET_MEMORY = 0x99,
 } FlashCMD;
@@ -264,6 +270,7 @@ typedef struct Flash {
     uint64_t cur_addr;
     bool write_enable;
     bool reset_enable;
+    uint8_t ear;
 
     int64_t dirty_page;
 
@@ -404,6 +411,7 @@ static void complete_collecting_data(Flash *s)
     s->cur_addr = s->data[0] << 16;
     s->cur_addr |= s->data[1] << 8;
     s->cur_addr |= s->data[2];
+        s->cur_addr += (s->ear & 0x3) * MAX_3BYTES_SIZE;
 
     s->state = STATE_IDLE;
 
@@ -431,6 +439,9 @@ static void complete_collecting_data(Flash *s)
             s->write_enable = false;
         }
         break;
+    case EXTEND_ADDR_WRITE:
+        s->ear = s->data[0];
+        break;
     default:
         break;
     }
@@ -440,6 +451,7 @@ static void reset_memory(Flash *s)
 {
     s->cmd_in_progress = NOP;
     s->cur_addr = 0;
+    s->ear = 0;
     s->len = 0;
     s->needed_bytes = 0;
     s->pos = 0;
@@ -563,6 +575,20 @@ static void decode_new_cmd(Flash *s, uint32_t value)
         break;
     case NOP:
         break;
+    case EXTEND_ADDR_READ:
+        s->data[0] = s->ear;
+        s->pos = 0;
+        s->len = 1;
+        s->state = STATE_READING_DATA;
+        break;
+    case EXTEND_ADDR_WRITE:
+        if (s->write_enable) {
+            s->needed_bytes = 1;
+            s->pos = 0;
+            s->len = 0;
+            s->state = STATE_COLLECTING_DATA;
+        }
+        break;
     case RESET_ENABLE:
         s->reset_enable = true;
         break;
@@ -699,6 +725,7 @@ static const VMStateDescription vmstate_m25p80 = {
         VMSTATE_UINT8(cmd_in_progress, Flash),
         VMSTATE_UINT64(cur_addr, Flash),
         VMSTATE_BOOL(write_enable, Flash),
+        VMSTATE_UINT8(ear, Flash),
         VMSTATE_BOOL(reset_enable, Flash),
         VMSTATE_END_OF_LIST()
     }
-- 
2.5.0

Re: [Qemu-devel] [PATCH v2 04/11] block: m25p80: Extend address mode

[Cédric Le Goater]

On 02/04/2016 01:23 PM, marcin.krzeminski@nokia.com wrote:
> From: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> 
> Extend address mode allows to switch flash 16 MiB banks,
> allowing user to access all flash sectors.
> This access mode is used by u-boot.
> 
> Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
> ---
>  hw/block/m25p80.c | 27 +++++++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
> 
> diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
> index f9088c5..6b5f00d 100644
> --- a/hw/block/m25p80.c
> +++ b/hw/block/m25p80.c
> @@ -48,6 +48,9 @@
>   */
>  #define WR_1 0x100
> 
> +/* 16 MiB max in 3 byte address mode */
> +#define MAX_3BYTES_SIZE 0x1000000
> +
>  typedef struct FlashPartInfo {
>      const char *part_name;
>      /* jedec code. (jedec >> 16) & 0xff is the 1st byte, >> 8 the 2nd etc */
> @@ -234,6 +237,9 @@ typedef enum {
>      ERASE_32K = 0x52,
>      ERASE_SECTOR = 0xd8,
> 
> +    EXTEND_ADDR_READ = 0xC8,
> +    EXTEND_ADDR_WRITE = 0xC5,
> +
>      RESET_ENABLE = 0x66,
>      RESET_MEMORY = 0x99,
>  } FlashCMD;
> @@ -264,6 +270,7 @@ typedef struct Flash {
>      uint64_t cur_addr;
>      bool write_enable;
>      bool reset_enable;
> +    uint8_t ear;
> 
>      int64_t dirty_page;
> 
> @@ -404,6 +411,7 @@ static void complete_collecting_data(Flash *s)
>      s->cur_addr = s->data[0] << 16;
>      s->cur_addr |= s->data[1] << 8;
>      s->cur_addr |= s->data[2];
> +        s->cur_addr += (s->ear & 0x3) * MAX_3BYTES_SIZE;

here ^

and this line does not appear in patch 5 which is curious. Is that a refresh 
issue ? 

Thanks,

C.

> 
>      s->state = STATE_IDLE;
> 
> @@ -431,6 +439,9 @@ static void complete_collecting_data(Flash *s)
>              s->write_enable = false;
>          }
>          break;
> +    case EXTEND_ADDR_WRITE:
> +        s->ear = s->data[0];
> +        break;
>      default:
>          break;
>      }
> @@ -440,6 +451,7 @@ static void reset_memory(Flash *s)
>  {
>      s->cmd_in_progress = NOP;
>      s->cur_addr = 0;
> +    s->ear = 0;
>      s->len = 0;
>      s->needed_bytes = 0;
>      s->pos = 0;
> @@ -563,6 +575,20 @@ static void decode_new_cmd(Flash *s, uint32_t value)
>          break;
>      case NOP:
>          break;
> +    case EXTEND_ADDR_READ:
> +        s->data[0] = s->ear;
> +        s->pos = 0;
> +        s->len = 1;
> +        s->state = STATE_READING_DATA;
> +        break;
> +    case EXTEND_ADDR_WRITE:
> +        if (s->write_enable) {
> +            s->needed_bytes = 1;
> +            s->pos = 0;
> +            s->len = 0;
> +            s->state = STATE_COLLECTING_DATA;
> +        }
> +        break;
>      case RESET_ENABLE:
>          s->reset_enable = true;
>          break;
> @@ -699,6 +725,7 @@ static const VMStateDescription vmstate_m25p80 = {
>          VMSTATE_UINT8(cmd_in_progress, Flash),
>          VMSTATE_UINT64(cur_addr, Flash),
>          VMSTATE_BOOL(write_enable, Flash),
> +        VMSTATE_UINT8(ear, Flash),
>          VMSTATE_BOOL(reset_enable, Flash),
>          VMSTATE_END_OF_LIST()
>      }
> 

Re: [Qemu-devel] [PATCH v2 04/11] block: m25p80: Extend address mode

[Krzeminski, Marcin (Nokia - PL/Wroclaw)]

> -----Original Message-----
> From: EXT Cédric Le Goater [mailto:clg@fr.ibm.com]
> Sent: Friday, February 05, 2016 8:58 AM
> To: Krzeminski, Marcin (Nokia - PL/Wroclaw); qemu-devel@nongnu.org
> Cc: crosthwaitepeter@gmail.com; pawel.lenkow@itlen.com
> Subject: Re: [PATCH v2 04/11] block: m25p80: Extend address mode
> 
> On 02/04/2016 01:23 PM, marcin.krzeminski@nokia.com wrote:
> > From: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> >
> > Extend address mode allows to switch flash 16 MiB banks, allowing user
> > to access all flash sectors.
> > This access mode is used by u-boot.
> >
> > Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> > Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
> > ---
> >  hw/block/m25p80.c | 27 +++++++++++++++++++++++++++
> >  1 file changed, 27 insertions(+)
> >
> > diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index
> > f9088c5..6b5f00d 100644
> > --- a/hw/block/m25p80.c
> > +++ b/hw/block/m25p80.c
> > @@ -48,6 +48,9 @@
> >   */
> >  #define WR_1 0x100
> >
> > +/* 16 MiB max in 3 byte address mode */ #define MAX_3BYTES_SIZE
> > +0x1000000
> > +
> >  typedef struct FlashPartInfo {
> >      const char *part_name;
> >      /* jedec code. (jedec >> 16) & 0xff is the 1st byte, >> 8 the 2nd
> > etc */ @@ -234,6 +237,9 @@ typedef enum {
> >      ERASE_32K = 0x52,
> >      ERASE_SECTOR = 0xd8,
> >
> > +    EXTEND_ADDR_READ = 0xC8,
> > +    EXTEND_ADDR_WRITE = 0xC5,
> > +
> >      RESET_ENABLE = 0x66,
> >      RESET_MEMORY = 0x99,
> >  } FlashCMD;
> > @@ -264,6 +270,7 @@ typedef struct Flash {
> >      uint64_t cur_addr;
> >      bool write_enable;
> >      bool reset_enable;
> > +    uint8_t ear;
> >
> >      int64_t dirty_page;
> >
> > @@ -404,6 +411,7 @@ static void complete_collecting_data(Flash *s)uu
> >      s->cur_addr = s->data[0] << 16;
> >      s->cur_addr |= s->data[1] << 8;
> >      s->cur_addr |= s->data[2];
> > +        s->cur_addr += (s->ear & 0x3) * MAX_3BYTES_SIZE;
> 
> here ^
> 
> and this line does not appear in patch 5 which is curious. Is that a refresh
> issue ?
> 
s->cur_addr += (s->ear & 0x3) * MAX_3BYTES_SIZE; is at line 61.

Thanks,
Marcin

> Thanks,
> 
> C.
> 
> >
> >      s->state = STATE_IDLE;
> >
> > @@ -431,6 +439,9 @@ static void complete_collecting_data(Flash *s)
> >              s->write_enable = false;
> >          }
> >          break;
> > +    case EXTEND_ADDR_WRITE:
> > +        s->ear = s->data[0];
> > +        break;
> >      default:
> >          break;
> >      }
> > @@ -440,6 +451,7 @@ static void reset_memory(Flash *s)  {
> >      s->cmd_in_progress = NOP;
> >      s->cur_addr = 0;
> > +    s->ear = 0;
> >      s->len = 0;
> >      s->needed_bytes = 0;
> >      s->pos = 0;
> > @@ -563,6 +575,20 @@ static void decode_new_cmd(Flash *s, uint32_t
> value)
> >          break;
> >      case NOP:
> >          break;
> > +    case EXTEND_ADDR_READ:
> > +        s->data[0] = s->ear;
> > +        s->pos = 0;
> > +        s->len = 1;
> > +        s->state = STATE_READING_DATA;
> > +        break;
> > +    case EXTEND_ADDR_WRITE:
> > +        if (s->write_enable) {
> > +            s->needed_bytes = 1;
> > +            s->pos = 0;
> > +            s->len = 0;
> > +            s->state = STATE_COLLECTING_DATA;
> > +        }
> > +        break;
> >      case RESET_ENABLE:
> >          s->reset_enable = true;
> >          break;
> > @@ -699,6 +725,7 @@ static const VMStateDescription vmstate_m25p80 =
> {
> >          VMSTATE_UINT8(cmd_in_progress, Flash),
> >          VMSTATE_UINT64(cur_addr, Flash),
> >          VMSTATE_BOOL(write_enable, Flash),
> > +        VMSTATE_UINT8(ear, Flash),
> >          VMSTATE_BOOL(reset_enable, Flash),
> >          VMSTATE_END_OF_LIST()
> >      }
> >

[Qemu-devel] [PATCH v2 05/11] block: m25p80: 4byte address mode

[marcin.krzeminski]

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

This patch adds only 4byte address mode (does not cover dummy cycles).
This mode is needed to access more than 16 MiB of flash.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
---
 hw/block/m25p80.c | 40 +++++++++++++++++++++++++++++++++++-----
 1 file changed, 35 insertions(+), 5 deletions(-)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 6b5f00d..e306356 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -237,6 +237,9 @@ typedef enum {
     ERASE_32K = 0x52,
     ERASE_SECTOR = 0xd8,
 
+    EN_4BYTE_ADDR = 0xB7,
+    EX_4BYTE_ADDR = 0xE9,
+
     EXTEND_ADDR_READ = 0xC8,
     EXTEND_ADDR_WRITE = 0xC5,
 
@@ -269,6 +272,7 @@ typedef struct Flash {
     uint8_t cmd_in_progress;
     uint64_t cur_addr;
     bool write_enable;
+    bool four_bytes_address_mode;
     bool reset_enable;
     uint8_t ear;
 
@@ -406,12 +410,26 @@ void flash_write8(Flash *s, uint64_t addr, uint8_t data)
     s->dirty_page = page;
 }
 
+static inline int get_cmd_length(Flash *s)
+{
+       return s->four_bytes_address_mode ? 4 : 3;
+   }
+}
+
 static void complete_collecting_data(Flash *s)
 {
-    s->cur_addr = s->data[0] << 16;
-    s->cur_addr |= s->data[1] << 8;
-    s->cur_addr |= s->data[2];
+    int i;
+
+    s->cur_addr = 0;
+
+    for ( i=0; i< get_cmd_length(s); ++i ) {
+        s->cur_addr <<= 8;
+        s->cur_addr |= s->data[i];
+    }
+
+    if ( get_cmd_length(s) == 3) {
         s->cur_addr += (s->ear & 0x3) * MAX_3BYTES_SIZE;
+    }
 
     s->state = STATE_IDLE;
 
@@ -452,6 +470,7 @@ static void reset_memory(Flash *s)
     s->cmd_in_progress = NOP;
     s->cur_addr = 0;
     s->ear = 0;
+    s->four_bytes_address_mode = false;
     s->len = 0;
     s->needed_bytes = 0;
     s->pos = 0;
@@ -480,7 +499,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
     case DPP:
     case QPP:
     case PP:
-        s->needed_bytes = 3;
+        s->needed_bytes = get_cmd_length(s);
         s->pos = 0;
         s->len = 0;
         s->state = STATE_COLLECTING_DATA;
@@ -489,7 +508,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
     case FAST_READ:
     case DOR:
     case QOR:
-        s->needed_bytes = 4;
+        s->needed_bytes = get_cmd_length(s);
         s->pos = 0;
         s->len = 0;
         s->state = STATE_COLLECTING_DATA;
@@ -502,6 +521,8 @@ static void decode_new_cmd(Flash *s, uint32_t value)
             s->needed_bytes = 4;
             break;
         case JEDEC_NUMONYX:
+            s->needed_bytes = get_cmd_length(s);
+            break;
         default:
             s->needed_bytes = 5;
         }
@@ -517,6 +538,8 @@ static void decode_new_cmd(Flash *s, uint32_t value)
             s->needed_bytes = 6;
             break;
         case JEDEC_NUMONYX:
+            s->needed_bytes = get_cmd_length(s);
+            break;
         default:
             s->needed_bytes = 8;
         }
@@ -575,6 +598,12 @@ static void decode_new_cmd(Flash *s, uint32_t value)
         break;
     case NOP:
         break;
+    case EN_4BYTE_ADDR:
+        s->four_bytes_address_mode = true;
+        break;
+    case EX_4BYTE_ADDR:
+        s->four_bytes_address_mode = false;
+        break;
     case EXTEND_ADDR_READ:
         s->data[0] = s->ear;
         s->pos = 0;
@@ -725,6 +754,7 @@ static const VMStateDescription vmstate_m25p80 = {
         VMSTATE_UINT8(cmd_in_progress, Flash),
         VMSTATE_UINT64(cur_addr, Flash),
         VMSTATE_BOOL(write_enable, Flash),
+        VMSTATE_BOOL(four_bytes_address_mode, Flash),
         VMSTATE_UINT8(ear, Flash),
         VMSTATE_BOOL(reset_enable, Flash),
         VMSTATE_END_OF_LIST()
-- 
2.5.0

Re: [Qemu-devel] [PATCH v2 05/11] block: m25p80: 4byte address mode

[Cédric Le Goater]

Hello Marcin,

Some comments below


On 02/04/2016 01:23 PM, marcin.krzeminski@nokia.com wrote:
> From: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> 
> This patch adds only 4byte address mode (does not cover dummy cycles).
> This mode is needed to access more than 16 MiB of flash.
> 
> Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> ---
>  hw/block/m25p80.c | 40 +++++++++++++++++++++++++++++++++++-----
>  1 file changed, 35 insertions(+), 5 deletions(-)
> 
> diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
> index 6b5f00d..e306356 100644
> --- a/hw/block/m25p80.c
> +++ b/hw/block/m25p80.c
> @@ -237,6 +237,9 @@ typedef enum {
>      ERASE_32K = 0x52,
>      ERASE_SECTOR = 0xd8,
> 
> +    EN_4BYTE_ADDR = 0xB7,
> +    EX_4BYTE_ADDR = 0xE9,
> +
>      EXTEND_ADDR_READ = 0xC8,
>      EXTEND_ADDR_WRITE = 0xC5,
> 
> @@ -269,6 +272,7 @@ typedef struct Flash {
>      uint8_t cmd_in_progress;
>      uint64_t cur_addr;
>      bool write_enable;
> +    bool four_bytes_address_mode;
>      bool reset_enable;
>      uint8_t ear;
> 
> @@ -406,12 +410,26 @@ void flash_write8(Flash *s, uint64_t addr, uint8_t data)
>      s->dirty_page = page;
>  }
> 
> +static inline int get_cmd_length(Flash *s)

The name is bit confusing, it is not really a command length 
but an address width ? 

> +{
> +       return s->four_bytes_address_mode ? 4 : 3;
> +   }

one '}' should be enough :)

> +}
> +
>  static void complete_collecting_data(Flash *s)
>  {
> -    s->cur_addr = s->data[0] << 16;
> -    s->cur_addr |= s->data[1] << 8;
> -    s->cur_addr |= s->data[2];
> +    int i;
> +
> +    s->cur_addr = 0;
> +
> +    for ( i=0; i< get_cmd_length(s); ++i ) {

white space issues above 

> +        s->cur_addr <<= 8;
> +        s->cur_addr |= s->data[i];
> +    }
> +
> +    if ( get_cmd_length(s) == 3) {

white space issues above


C.


>          s->cur_addr += (s->ear & 0x3) * MAX_3BYTES_SIZE;
> +    }
> 
>      s->state = STATE_IDLE;
> 
> @@ -452,6 +470,7 @@ static void reset_memory(Flash *s)
>      s->cmd_in_progress = NOP;
>      s->cur_addr = 0;
>      s->ear = 0;
> +    s->four_bytes_address_mode = false;
>      s->len = 0;
>      s->needed_bytes = 0;
>      s->pos = 0;
> @@ -480,7 +499,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
>      case DPP:
>      case QPP:
>      case PP:
> -        s->needed_bytes = 3;
> +        s->needed_bytes = get_cmd_length(s);
>          s->pos = 0;
>          s->len = 0;
>          s->state = STATE_COLLECTING_DATA;
> @@ -489,7 +508,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
>      case FAST_READ:
>      case DOR:
>      case QOR:
> -        s->needed_bytes = 4;
> +        s->needed_bytes = get_cmd_length(s);
>          s->pos = 0;
>          s->len = 0;
>          s->state = STATE_COLLECTING_DATA;
> @@ -502,6 +521,8 @@ static void decode_new_cmd(Flash *s, uint32_t value)
>              s->needed_bytes = 4;
>              break;
>          case JEDEC_NUMONYX:
> +            s->needed_bytes = get_cmd_length(s);
> +            break;
>          default:
>              s->needed_bytes = 5;
>          }
> @@ -517,6 +538,8 @@ static void decode_new_cmd(Flash *s, uint32_t value)
>              s->needed_bytes = 6;
>              break;
>          case JEDEC_NUMONYX:
> +            s->needed_bytes = get_cmd_length(s);
> +            break;
>          default:
>              s->needed_bytes = 8;
>          }
> @@ -575,6 +598,12 @@ static void decode_new_cmd(Flash *s, uint32_t value)
>          break;
>      case NOP:
>          break;
> +    case EN_4BYTE_ADDR:
> +        s->four_bytes_address_mode = true;
> +        break;
> +    case EX_4BYTE_ADDR:
> +        s->four_bytes_address_mode = false;
> +        break;
>      case EXTEND_ADDR_READ:
>          s->data[0] = s->ear;
>          s->pos = 0;
> @@ -725,6 +754,7 @@ static const VMStateDescription vmstate_m25p80 = {
>          VMSTATE_UINT8(cmd_in_progress, Flash),
>          VMSTATE_UINT64(cur_addr, Flash),
>          VMSTATE_BOOL(write_enable, Flash),
> +        VMSTATE_BOOL(four_bytes_address_mode, Flash),
>          VMSTATE_UINT8(ear, Flash),
>          VMSTATE_BOOL(reset_enable, Flash),
>          VMSTATE_END_OF_LIST()
> 

Re: [Qemu-devel] [PATCH v2 05/11] block: m25p80: 4byte address mode

[Krzeminski, Marcin (Nokia - PL/Wroclaw)]

Hello,

> -----Original Message-----
> From: EXT Cédric Le Goater [mailto:clg@fr.ibm.com]
> Sent: Friday, February 05, 2016 8:53 AM
> To: Krzeminski, Marcin (Nokia - PL/Wroclaw); qemu-devel@nongnu.org
> Cc: crosthwaitepeter@gmail.com; pawel.lenkow@itlen.com
> Subject: Re: [PATCH v2 05/11] block: m25p80: 4byte address mode
> 
> Hello Marcin,
> 
> Some comments below
> 
> 
> On 02/04/2016 01:23 PM, marcin.krzeminski@nokia.com wrote:
> > From: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> >
> > This patch adds only 4byte address mode (does not cover dummy cycles).
> > This mode is needed to access more than 16 MiB of flash.
> >
> > Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> > ---
> >  hw/block/m25p80.c | 40 +++++++++++++++++++++++++++++++++++-----
> >  1 file changed, 35 insertions(+), 5 deletions(-)
> >
> > diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index
> > 6b5f00d..e306356 100644
> > --- a/hw/block/m25p80.c
> > +++ b/hw/block/m25p80.c
> > @@ -237,6 +237,9 @@ typedef enum {
> >      ERASE_32K = 0x52,
> >      ERASE_SECTOR = 0xd8,
> >
> > +    EN_4BYTE_ADDR = 0xB7,
> > +    EX_4BYTE_ADDR = 0xE9,
> > +
> >      EXTEND_ADDR_READ = 0xC8,
> >      EXTEND_ADDR_WRITE = 0xC5,
> >
> > @@ -269,6 +272,7 @@ typedef struct Flash {
> >      uint8_t cmd_in_progress;
> >      uint64_t cur_addr;
> >      bool write_enable;
> > +    bool four_bytes_address_mode;
> >      bool reset_enable;
> >      uint8_t ear;
> >
> > @@ -406,12 +410,26 @@ void flash_write8(Flash *s, uint64_t addr, uint8_t
> data)
> >      s->dirty_page = page;
> >  }
> >
> > +static inline int get_cmd_length(Flash *s)
> 
> The name is bit confusing, it is not really a command length but an address
> width ?
> 
Yes, this function returns number of bytes that follows after command.
I can change it to get_address_width.
> > +{
> > +       return s->four_bytes_address_mode ? 4 : 3;
> > +   }
> 
> one '}' should be enough :)
> 
Still problems with creating patches from one file...
> > +}
> > +
> >  static void complete_collecting_data(Flash *s)  {
> > -    s->cur_addr = s->data[0] << 16;
> > -    s->cur_addr |= s->data[1] << 8;
> > -    s->cur_addr |= s->data[2];
> > +    int i;
> > +
> > +    s->cur_addr = 0;
> > +
> > +    for ( i=0; i< get_cmd_length(s); ++i ) {
> 
> white space issues above
> 
> > +        s->cur_addr <<= 8;
> > +        s->cur_addr |= s->data[i];
> > +    }
> > +
> > +    if ( get_cmd_length(s) == 3) {
> 
> white space issues above
> 
I forgot to run checkpatch script.
> 
> C.
Thanks,
Marcin
> 
> >          s->cur_addr += (s->ear & 0x3) * MAX_3BYTES_SIZE;
> > +    }
> >
> >      s->state = STATE_IDLE;
> >
> > @@ -452,6 +470,7 @@ static void reset_memory(Flash *s)
> >      s->cmd_in_progress = NOP;
> >      s->cur_addr = 0;
> >      s->ear = 0;
> > +    s->four_bytes_address_mode = false;
> >      s->len = 0;
> >      s->needed_bytes = 0;
> >      s->pos = 0;
> > @@ -480,7 +499,7 @@ static void decode_new_cmd(Flash *s, uint32_t
> value)
> >      case DPP:
> >      case QPP:
> >      case PP:
> > -        s->needed_bytes = 3;
> > +        s->needed_bytes = get_cmd_length(s);
> >          s->pos = 0;
> >          s->len = 0;
> >          s->state = STATE_COLLECTING_DATA; @@ -489,7 +508,7 @@ static
> > void decode_new_cmd(Flash *s, uint32_t value)
> >      case FAST_READ:
> >      case DOR:
> >      case QOR:
> > -        s->needed_bytes = 4;
> > +        s->needed_bytes = get_cmd_length(s);
> >          s->pos = 0;
> >          s->len = 0;
> >          s->state = STATE_COLLECTING_DATA; @@ -502,6 +521,8 @@ static
> > void decode_new_cmd(Flash *s, uint32_t value)
> >              s->needed_bytes = 4;
> >              break;
> >          case JEDEC_NUMONYX:
> > +            s->needed_bytes = get_cmd_length(s);
> > +            break;
> >          default:
> >              s->needed_bytes = 5;
> >          }
> > @@ -517,6 +538,8 @@ static void decode_new_cmd(Flash *s, uint32_t
> value)
> >              s->needed_bytes = 6;
> >              break;
> >          case JEDEC_NUMONYX:
> > +            s->needed_bytes = get_cmd_length(s);
> > +            break;
> >          default:
> >              s->needed_bytes = 8;
> >          }
> > @@ -575,6 +598,12 @@ static void decode_new_cmd(Flash *s, uint32_t
> value)
> >          break;
> >      case NOP:
> >          break;
> > +    case EN_4BYTE_ADDR:
> > +        s->four_bytes_address_mode = true;
> > +        break;
> > +    case EX_4BYTE_ADDR:
> > +        s->four_bytes_address_mode = false;
> > +        break;
> >      case EXTEND_ADDR_READ:
> >          s->data[0] = s->ear;
> >          s->pos = 0;
> > @@ -725,6 +754,7 @@ static const VMStateDescription vmstate_m25p80 =
> {
> >          VMSTATE_UINT8(cmd_in_progress, Flash),
> >          VMSTATE_UINT64(cur_addr, Flash),
> >          VMSTATE_BOOL(write_enable, Flash),
> > +        VMSTATE_BOOL(four_bytes_address_mode, Flash),
> >          VMSTATE_UINT8(ear, Flash),
> >          VMSTATE_BOOL(reset_enable, Flash),
> >          VMSTATE_END_OF_LIST()
> >

[Qemu-devel] [PATCH v2 06/11] block: m25p80: Add configuration registers

[marcin.krzeminski]

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

This patch adds both volatile and non volatile configuration registers
and commands to allow modify them. It is needed for proper handling
dummy cycles. Power-on initialization of those registers and flash state
has been included as well.
Some of this registers are used by kernel.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
---
 hw/block/m25p80.c | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index e306356..a213587 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -26,6 +26,7 @@
 #include "sysemu/block-backend.h"
 #include "sysemu/blockdev.h"
 #include "hw/ssi/ssi.h"
+#include "qemu/bitops.h"
 
 #ifndef M25P80_ERR_DEBUG
 #define M25P80_ERR_DEBUG 0
@@ -245,6 +246,15 @@ typedef enum {
 
     RESET_ENABLE = 0x66,
     RESET_MEMORY = 0x99,
+
+    RNVCR = 0xB5,
+    WNVCR = 0xB1,
+
+    RVCR = 0x85,
+    WVCR = 0x81,
+
+    REVCR = 0x65,
+    WEVCR = 0x61,
 } FlashCMD;
 
 typedef enum {
@@ -271,6 +281,9 @@ typedef struct Flash {
     uint8_t needed_bytes;
     uint8_t cmd_in_progress;
     uint64_t cur_addr;
+    uint32_t nonvolatile_cfg;
+    uint32_t volatile_cfg;
+    uint32_t enh_volatile_cfg;
     bool write_enable;
     bool four_bytes_address_mode;
     bool reset_enable;
@@ -460,6 +473,15 @@ static void complete_collecting_data(Flash *s)
     case EXTEND_ADDR_WRITE:
         s->ear = s->data[0];
         break;
+    case WNVCR:
+        s->nonvolatile_cfg = s->data[0] | (s->data[1] << 8);
+        break;
+    case WVCR:
+        s->volatile_cfg = s->data[0];
+        break;
+    case WEVCR:
+        s->enh_volatile_cfg = s->data[0];
+        break;
     default:
         break;
     }
@@ -618,6 +640,49 @@ static void decode_new_cmd(Flash *s, uint32_t value)
             s->state = STATE_COLLECTING_DATA;
         }
         break;
+    case RNVCR:
+        s->data[0] = s->nonvolatile_cfg & 0xFF;
+        s->data[1] = (s->nonvolatile_cfg >> 8) & 0xFF;
+        s->pos = 0;
+        s->len = 1;
+        s->state = STATE_READING_DATA;
+        break;
+    case WNVCR:
+        if (s->write_enable) {
+            s->needed_bytes = 2;
+            s->pos = 0;
+            s->len = 0;
+            s->state = STATE_COLLECTING_DATA;
+        }
+        break;
+    case RVCR:
+        s->data[0] = s->volatile_cfg & 0xFF;
+        s->pos = 0;
+        s->len = 1;
+        s->state = STATE_READING_DATA;
+        break;
+    case WVCR:
+        if (s->write_enable) {
+            s->needed_bytes = 1;
+            s->pos = 0;
+            s->len = 0;
+            s->state = STATE_COLLECTING_DATA;
+        }
+        break;
+    case REVCR:
+        s->data[0] = s->enh_volatile_cfg & 0xFF;
+        s->pos = 0;
+        s->len = 1;
+        s->state = STATE_READING_DATA;
+        break;
+    case WEVCR:
+        if (s->write_enable) {
+            s->needed_bytes = 1;
+            s->pos = 0;
+            s->len = 0;
+            s->state = STATE_COLLECTING_DATA;
+        }
+        break;
     case RESET_ENABLE:
         s->reset_enable = true;
         break;
@@ -710,6 +775,41 @@ static int m25p80_init(SSISlave *ss)
 
     reset_memory(s);
 
+    s->volatile_cfg = 0;
+    /* WRAP & reserved*/
+    s->volatile_cfg |= 0x3;
+    /* XIP */
+    if (extract32(s->nonvolatile_cfg,9,3) != 0x7)
+    {
+        s->volatile_cfg |= (1 << 3);
+    }
+    /* Number of dummy cycles */
+    s->volatile_cfg |= deposit32(s->volatile_cfg,4,4,extract32(s->nonvolatile_cfg,12,4));
+
+    s->enh_volatile_cfg = 0;
+    /* Output driver strength */
+    s->enh_volatile_cfg |= 0x7;
+    /* Vpp accelerator */
+    s->enh_volatile_cfg |= (1 << 3);
+    /* Reset/hold & reserved */
+    s->enh_volatile_cfg |= (1 << 4);
+    /* Dual I/O protocol */
+    if ( (s->nonvolatile_cfg >> 1) & 0x1) {
+        s->enh_volatile_cfg |= (1 << 6);
+    }
+    /* Quad I/O protocol */
+    if ( (s->nonvolatile_cfg >> 3) & 0x1) {
+        s->enh_volatile_cfg |= (1 << 7);
+    }
+
+    if ( !(s->nonvolatile_cfg & 0x1)) {
+        s->four_bytes_address_mode = true;
+    }
+
+    if ( !((s->nonvolatile_cfg >> 1) & 0x1)) {
+        s->ear = 0x3;
+    }
+
     /* FIXME use a qdev drive property instead of drive_get_next() */
     dinfo = drive_get_next(IF_MTD);
 
@@ -740,6 +840,11 @@ static void m25p80_pre_save(void *opaque)
     flash_sync_dirty((Flash *)opaque, -1);
 }
 
+static Property m25p80_properties[] = {
+    DEFINE_PROP_UINT32("nonvolatile-cfg", Flash, nonvolatile_cfg, 0x8FFF),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static const VMStateDescription vmstate_m25p80 = {
     .name = "xilinx_spi",
     .version_id = 2,
@@ -757,6 +862,9 @@ static const VMStateDescription vmstate_m25p80 = {
         VMSTATE_BOOL(four_bytes_address_mode, Flash),
         VMSTATE_UINT8(ear, Flash),
         VMSTATE_BOOL(reset_enable, Flash),
+        VMSTATE_UINT32(nonvolatile_cfg, Flash),
+        VMSTATE_UINT32(volatile_cfg, Flash),
+        VMSTATE_UINT32(enh_volatile_cfg, Flash),
         VMSTATE_END_OF_LIST()
     }
 };
@@ -772,6 +880,7 @@ static void m25p80_class_init(ObjectClass *klass, void *data)
     k->set_cs = m25p80_cs;
     k->cs_polarity = SSI_CS_LOW;
     dc->vmsd = &vmstate_m25p80;
+    dc->props = m25p80_properties;
     mc->pi = data;
 }
 
-- 
2.5.0

[Qemu-devel] [PATCH v2 07/11] block: m25p80: Dummy cycles for N25Q256/512

[marcin.krzeminski]

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

This patch handles dummy cycles.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
---
 hw/block/m25p80.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index a213587..df1f829 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -531,6 +531,10 @@ static void decode_new_cmd(Flash *s, uint32_t value)
     case DOR:
     case QOR:
         s->needed_bytes = get_cmd_length(s);
+        if ( ((s->pi->jedec >> 16) & 0xFF) == JEDEC_NUMONYX ) {
+            /* Dummy cycles - modeled with bytes writes instead of bits */
+            s->needed_bytes += extract32(s->volatile_cfg,4,4);
+        }
         s->pos = 0;
         s->len = 0;
         s->state = STATE_COLLECTING_DATA;
@@ -544,6 +548,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
             break;
         case JEDEC_NUMONYX:
             s->needed_bytes = get_cmd_length(s);
+            s->needed_bytes += extract32(s->volatile_cfg,4,4);
             break;
         default:
             s->needed_bytes = 5;
@@ -561,6 +566,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
             break;
         case JEDEC_NUMONYX:
             s->needed_bytes = get_cmd_length(s);
+            s->needed_bytes += extract32(s->volatile_cfg,4,4);
             break;
         default:
             s->needed_bytes = 8;
-- 
2.5.0

Re: [Qemu-devel] [PATCH v2 07/11] block: m25p80: Dummy cycles for N25Q256/512

[Cédric Le Goater]

On 02/04/2016 01:23 PM, marcin.krzeminski@nokia.com wrote:
> From: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> 
> This patch handles dummy cycles.
> 
> Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> ---
>  hw/block/m25p80.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
> index a213587..df1f829 100644
> --- a/hw/block/m25p80.c
> +++ b/hw/block/m25p80.c
> @@ -531,6 +531,10 @@ static void decode_new_cmd(Flash *s, uint32_t value)
>      case DOR:
>      case QOR:
>          s->needed_bytes = get_cmd_length(s);
> +        if ( ((s->pi->jedec >> 16) & 0xFF) == JEDEC_NUMONYX ) {

There are a few other areas where we check the manufactory id. May be we 
could add :

	#define manuf_id(pinfo) ((pinfo)->jedec >> 16) & 0xFF


> +            /* Dummy cycles - modeled with bytes writes instead of bits */
> +            s->needed_bytes += extract32(s->volatile_cfg,4,4);

white space issues ^

> +        }
>          s->pos = 0;
>          s->len = 0;
>          s->state = STATE_COLLECTING_DATA;
> @@ -544,6 +548,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
>              break;
>          case JEDEC_NUMONYX:
>              s->needed_bytes = get_cmd_length(s);
> +            s->needed_bytes += extract32(s->volatile_cfg,4,4);
>              break;
>          default:
>              s->needed_bytes = 5;
> @@ -561,6 +566,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
>              break;
>          case JEDEC_NUMONYX:
>              s->needed_bytes = get_cmd_length(s);
> +            s->needed_bytes += extract32(s->volatile_cfg,4,4);
>              break;
>          default:
>              s->needed_bytes = 8;
> 

Re: [Qemu-devel] [PATCH v2 07/11] block: m25p80: Dummy cycles for N25Q256/512

[Krzeminski, Marcin (Nokia - PL/Wroclaw)]

> -----Original Message-----
> From: EXT Cédric Le Goater [mailto:clg@fr.ibm.com]
> Sent: Friday, February 05, 2016 9:06 AM
> To: Krzeminski, Marcin (Nokia - PL/Wroclaw); qemu-devel@nongnu.org
> Cc: crosthwaitepeter@gmail.com; pawel.lenkow@itlen.com
> Subject: Re: [PATCH v2 07/11] block: m25p80: Dummy cycles for
> N25Q256/512
> 
> On 02/04/2016 01:23 PM, marcin.krzeminski@nokia.com wrote:
> > From: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> >
> > This patch handles dummy cycles.
> >
> > Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
> > ---
> >  hw/block/m25p80.c | 6 ++++++
> >  1 file changed, 6 insertions(+)
> >
> > diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index
> > a213587..df1f829 100644
> > --- a/hw/block/m25p80.c
> > +++ b/hw/block/m25p80.c
> > @@ -531,6 +531,10 @@ static void decode_new_cmd(Flash *s, uint32_t
> value)
> >      case DOR:
> >      case QOR:
> >          s->needed_bytes = get_cmd_length(s);
> > +        if ( ((s->pi->jedec >> 16) & 0xFF) == JEDEC_NUMONYX ) {
> 
> There are a few other areas where we check the manufactory id. May be we
> could add :
> 
> 	#define manuf_id(pinfo) ((pinfo)->jedec >> 16) & 0xFF
> 
> 
I will probably add this with Micronics/Spansion patches.

> > +            /* Dummy cycles - modeled with bytes writes instead of bits */
> > +            s->needed_bytes += extract32(s->volatile_cfg,4,4);
> 
> white space issues ^
> 
Thanks,
Marcin
> > +        }
> >          s->pos = 0;
> >          s->len = 0;
> >          s->state = STATE_COLLECTING_DATA; @@ -544,6 +548,7 @@ static
> > void decode_new_cmd(Flash *s, uint32_t value)
> >              break;
> >          case JEDEC_NUMONYX:
> >              s->needed_bytes = get_cmd_length(s);
> > +            s->needed_bytes += extract32(s->volatile_cfg,4,4);
> >              break;
> >          default:
> >              s->needed_bytes = 5;
> > @@ -561,6 +566,7 @@ static void decode_new_cmd(Flash *s, uint32_t
> value)
> >              break;
> >          case JEDEC_NUMONYX:
> >              s->needed_bytes = get_cmd_length(s);
> > +            s->needed_bytes += extract32(s->volatile_cfg,4,4);
> >              break;
> >          default:
> >              s->needed_bytes = 8;
> >

[Qemu-devel] [PATCH v2 08/11] block: m25p80: Fast read and 4bytes commands

[marcin.krzeminski]

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

Adds fast read and 4bytes commands family.
This work is based on Pawel Lenkow patch from v1.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
---
 hw/block/m25p80.c | 43 ++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index df1f829..faf1212 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -224,19 +224,28 @@ typedef enum {
     BULK_ERASE = 0xc7,
 
     READ = 0x3,
-    FAST_READ = 0xb,
+    READ4 = 0x13,
+    FAST_READ = 0x0b,
+    FAST_READ4 = 0x0c,
     DOR = 0x3b,
+    DOR4 = 0x3c,
     QOR = 0x6b,
+    QOR4 = 0x6c,
     DIOR = 0xbb,
+    DIOR4 = 0xbc,
     QIOR = 0xeb,
+    QIOR4 = 0xec,
 
     PP = 0x2,
+    PP4 = 0x12,
     DPP = 0xa2,
     QPP = 0x32,
 
     ERASE_4K = 0x20,
+    ERASE4_4K = 0x21,
     ERASE_32K = 0x52,
     ERASE_SECTOR = 0xd8,
+    ERASE4_SECTOR = 0xdc,
 
     EN_4BYTE_ADDR = 0xB7,
     EX_4BYTE_ADDR = 0xE9,
@@ -359,6 +368,7 @@ static void flash_erase(Flash *s, int offset, FlashCMD cmd)
 
     switch (cmd) {
     case ERASE_4K:
+    case ERASE4_4K:
         len = 4 << 10;
         capa_to_assert = ER_4K;
         break;
@@ -367,6 +377,7 @@ static void flash_erase(Flash *s, int offset, FlashCMD cmd)
         capa_to_assert = ER_32K;
         break;
     case ERASE_SECTOR:
+    case ERASE4_SECTOR:
         len = s->pi->sector_size;
         break;
     case BULK_ERASE:
@@ -425,6 +436,18 @@ void flash_write8(Flash *s, uint64_t addr, uint8_t data)
 
 static inline int get_cmd_length(Flash *s)
 {
+   switch (s->cmd_in_progress) {
+   case PP4:
+   case READ4:
+   case QIOR4:
+   case ERASE4_4K:
+   case ERASE4_SECTOR:
+   case FAST_READ4:
+   case DOR4:
+   case QOR4:
+   case DIOR4:
+       return 4;
+   default:
        return s->four_bytes_address_mode ? 4 : 3;
    }
 }
@@ -450,19 +473,28 @@ static void complete_collecting_data(Flash *s)
     case DPP:
     case QPP:
     case PP:
+    case PP4:
         s->state = STATE_PAGE_PROGRAM;
         break;
     case READ:
+    case READ4:
     case FAST_READ:
+    case FAST_READ4:
     case DOR:
+    case DOR4:
     case QOR:
+    case QOR4:
     case DIOR:
+    case DIOR4:
     case QIOR:
+    case QIOR4:
         s->state = STATE_READ;
         break;
     case ERASE_4K:
+    case ERASE4_4K:
     case ERASE_32K:
     case ERASE_SECTOR:
+    case ERASE4_SECTOR:
         flash_erase(s, s->cur_addr, s->cmd_in_progress);
         break;
     case WRSR:
@@ -515,12 +547,16 @@ static void decode_new_cmd(Flash *s, uint32_t value)
     switch (value) {
 
     case ERASE_4K:
+    case ERASE4_4K:
     case ERASE_32K:
     case ERASE_SECTOR:
+    case ERASE4_SECTOR:
     case READ:
+    case READ4:
     case DPP:
     case QPP:
     case PP:
+    case PP4:
         s->needed_bytes = get_cmd_length(s);
         s->pos = 0;
         s->len = 0;
@@ -528,8 +564,11 @@ static void decode_new_cmd(Flash *s, uint32_t value)
         break;
 
     case FAST_READ:
+    case FAST_READ4:
     case DOR:
+    case DOR4:
     case QOR:
+    case QOR4:
         s->needed_bytes = get_cmd_length(s);
         if ( ((s->pi->jedec >> 16) & 0xFF) == JEDEC_NUMONYX ) {
             /* Dummy cycles - modeled with bytes writes instead of bits */
@@ -541,6 +580,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
         break;
 
     case DIOR:
+    case DIOR4:
         switch ((s->pi->jedec >> 16) & 0xFF) {
         case JEDEC_WINBOND:
         case JEDEC_SPANSION:
@@ -559,6 +599,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
         break;
 
     case QIOR:
+    case QIOR4:
         switch ((s->pi->jedec >> 16) & 0xFF) {
         case JEDEC_WINBOND:
         case JEDEC_SPANSION:
-- 
2.5.0

[Qemu-devel] [PATCH v2 09/11] block: m25p80: Implemented FSR register

[marcin.krzeminski]

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 faf1212..116e098 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,
@@ -640,6 +641,16 @@ 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

[Qemu-devel] [PATCH v2 10/11] block: m25p80: n25q256a/n25q512a models

[marcin.krzeminski]

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

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
---
 hw/block/m25p80.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 116e098..ec1013d 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -210,8 +210,9 @@ static const FlashPartInfo known_devices[] = {
     { INFO("w25q80bl",    0xef4014,      0,  64 << 10,  16, ER_4K) },
     { INFO("w25q256",     0xef4019,      0,  64 << 10, 512, ER_4K) },
 
-    /* Numonyx -- n25q128 */
     { INFO("n25q128",      0x20ba18,      0,  64 << 10, 256, 0) },
+    { INFO("n25q256a",     0x20ba19,      0,  64 << 10, 512, ER_4K) },
+    { INFO("n25q512a",     0x20ba20,      0,  64 << 10, 1024, ER_4K) },
 };
 
 typedef enum {
-- 
2.5.0

[Qemu-devel] [PATCH v2 11/11] block: m25p80: at25128a/at25256a models

[marcin.krzeminski]

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

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 ec1013d..3ff418f 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -99,6 +99,12 @@ static const FlashPartInfo known_devices[] = {
 
     { INFO("at45db081d",  0x1f2500,      0,  64 << 10,  16, ER_4K) },
 
+    /* Atmel EEPROMS - it is assumed, that don't care bit in command
+     * is set to 0. Block protection is not supported.
+     */
+    { INFO("at25128a-nonjedec", 0x0,     0,         1, 131072, WR_1) },
+    { INFO("at25256a-nonjedec", 0x0,     0,         1, 262144, WR_1) },
+
     /* EON -- en25xxx */
     { INFO("en25f32",     0x1c3116,      0,  64 << 10,  64, ER_4K) },
     { INFO("en25p32",     0x1c2016,      0,  64 << 10,  64, 0) },
@@ -438,6 +444,11 @@ void flash_write8(Flash *s, uint64_t addr, uint8_t data)
 
 static inline int get_cmd_length(Flash *s)
 {
+   /* check if eeprom is in use */
+   if (s->pi->flags == WR_1) {
+       return 2;
+   }
+
    switch (s->cmd_in_progress) {
    case PP4:
    case READ4:
-- 
2.5.0