[for-2.12?] m25p80: Correct the at25128a/at25256a eeproms size

Message ID 20180415203106.24333-1-f4bug@amsat.org
State New
Headers show
Series
  • [for-2.12?] m25p80: Correct the at25128a/at25256a eeproms size
Related show

Commit Message

Philippe Mathieu-Daudé April 15, 2018, 8:31 p.m.
From the datasheet (3368J–SEEPR) description:
    The AT25128A/256A provides 131,072/262,144 bits of serial
    electrically-erasable programmable read only memory (EEPROM)
    organized as 16,384/32,768 words of 8 bits each.

However QEMU models the flash size in bytes.
Correct the at25128a/at25256a entries to reflect the datasheet size.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
This is not a regression, so can now wait for 2.13.

 hw/block/m25p80.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

mar.krzeminski April 16, 2018, 4:05 p.m. | #1
W dniu 15.04.2018 o 22:31, Philippe Mathieu-Daudé pisze:
> >From the datasheet (3368J–SEEPR) description:
>      The AT25128A/256A provides 131,072/262,144 bits of serial
>      electrically-erasable programmable read only memory (EEPROM)
>      organized as 16,384/32,768 words of 8 bits each.
>
> However QEMU models the flash size in bytes.
> Correct the at25128a/at25256a entries to reflect the datasheet size.
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Marcin Krzeminski <mar.krzeminski@gmail.com>
> ---
> This is not a regression, so can now wait for 2.13.
>
>   hw/block/m25p80.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
> index b49c8e9caa..d0b9fbfc50 100644
> --- a/hw/block/m25p80.c
> +++ b/hw/block/m25p80.c
> @@ -196,8 +196,8 @@ static const FlashPartInfo known_devices[] = {
>       /* 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, EEPROM) },
> -    { INFO("at25256a-nonjedec", 0x0,     0,         1, 262144, EEPROM) },
> +    { INFO("at25128a-nonjedec", 0x0,     0,         1, 16384, EEPROM) },
> +    { INFO("at25256a-nonjedec", 0x0,     0,         1, 32768, EEPROM) },
Thanks!
Marcin
>   
>       /* EON -- en25xxx */
>       { INFO("en25f32",     0x1c3116,      0,  64 << 10,  64, ER_4K) },
Alistair Francis April 16, 2018, 8:52 p.m. | #2
On Mon, Apr 16, 2018 at 9:05 AM, mar.krzeminski
<mar.krzeminski@gmail.com> wrote:
> W dniu 15.04.2018 o 22:31, Philippe Mathieu-Daudé pisze:
>>
>> >From the datasheet (3368J–SEEPR) description:
>>      The AT25128A/256A provides 131,072/262,144 bits of serial
>>      electrically-erasable programmable read only memory (EEPROM)
>>      organized as 16,384/32,768 words of 8 bits each.
>>
>> However QEMU models the flash size in bytes.
>> Correct the at25128a/at25256a entries to reflect the datasheet size.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
>
> Reviewed-by: Marcin Krzeminski <mar.krzeminski@gmail.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

>>
>> ---
>> This is not a regression, so can now wait for 2.13.
>>
>>   hw/block/m25p80.c | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
>> index b49c8e9caa..d0b9fbfc50 100644
>> --- a/hw/block/m25p80.c
>> +++ b/hw/block/m25p80.c
>> @@ -196,8 +196,8 @@ static const FlashPartInfo known_devices[] = {
>>       /* 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, EEPROM) },
>> -    { INFO("at25256a-nonjedec", 0x0,     0,         1, 262144, EEPROM) },
>> +    { INFO("at25128a-nonjedec", 0x0,     0,         1, 16384, EEPROM) },
>> +    { INFO("at25256a-nonjedec", 0x0,     0,         1, 32768, EEPROM) },
>
> Thanks!
> Marcin
>
>>         /* EON -- en25xxx */
>>       { INFO("en25f32",     0x1c3116,      0,  64 << 10,  64, ER_4K) },
>
>
>

Patch

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index b49c8e9caa..d0b9fbfc50 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -196,8 +196,8 @@  static const FlashPartInfo known_devices[] = {
     /* 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, EEPROM) },
-    { INFO("at25256a-nonjedec", 0x0,     0,         1, 262144, EEPROM) },
+    { INFO("at25128a-nonjedec", 0x0,     0,         1, 16384, EEPROM) },
+    { INFO("at25256a-nonjedec", 0x0,     0,         1, 32768, EEPROM) },
 
     /* EON -- en25xxx */
     { INFO("en25f32",     0x1c3116,      0,  64 << 10,  64, ER_4K) },