[flashrom] Re: adding part #

[Vlim]

Thanks.

How is Dual IO and Quad IO supported here?
I have the following cases.

1.
parts that need to configure QE bit before Quad IO can be used.
  2.
parts that have default QE bit set for quad.
  3.
Has a dedicated command for quad IO read, which is similar to other vendors.

Regards,

Victor

________________________________
From: Anastasia Klimchuk 
Sent: Thursday, March 21, 2024 23:32
To: Vlim ; [e-mail] 
Cc: Peter Marheine 
Subject: Re: [flashrom] Re: adding part #

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For these two (printlock and unlock), you need to pick the function
which handles the highest BP bit that chip supports. In your example,
if a chip supports bits BP0-BP4 the correct functions are those with
BP4 in the name. So you did it all right.

If the chip supports write protection, you also need to set .reg_bits
in chip definition. For this you need to have a look at struct
reg_bit_map in include/flash.h, it has comments on what each bit in
the struct means.

On Fri, Mar 22, 2024 at 7:22 AM Vlim  wrote:
> Thanks, Anastasia,
>
> Can you please explain this statement,
>
> .printlock  = SPI_PRETTYPRINT_STATUS_REGISTER_BP4_SRWD,
> .unlock     = SPI_DISABLE_BLOCKPROTECT_BP4_SRWD,
>
> Looks like this is to support memory array protection. But it needs BP0-BP4.
> Do I need to specify BP0 to BP3 as well?
> Or I specify the setting when I initiate the flashrom programming command?
>
> Regards,
>
> Victor
>
> From: Anastasia Klimchuk 
> Sent: Thursday, March 21, 2024 05:32
> To: Vlim ; [e-mail] 
> Cc: Peter Marheine 
> Subject: [flashrom] Re: adding part #
>
> You don't often get email from [e-mail]. Learn why this is important
> 此为外部邮件，谨防钓鱼邮件，请注意邮件是否涉及敏感信息
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> Hello Victor,
>
> Various feature bits are defined as macros in include/flash.h , some of them have comments explaining what they do. If the feature name is not descriptive, and there is no comment, but you think you might need this feature: feel free to ask. I would try to add comments later.
>
> SPI_DISABLE_BLOCKPROTECT_BP4_SRWD and other unlock functions as in spi25_statusreg.c. Those functions have comments, hopefully this can help!
>
> On Thu, Mar 21, 2024 at 2:48 PM Vlim  wrote:
>
> Thanks, Peter,
>
> Where can I find the definition of terms like,
>
> .feature_bits     = FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_WRSR_EXT2,
> SPI_DISABLE_BLOCKPROTECT_BP4_SRWD
>
> Regards,
>
> Victor
>
> From: Peter Marheine 
> Sent: Tuesday, March 19, 2024 15:42
> To: Vlim 
> Cc: [e-mail] 
> Subject: Re: [flashrom] adding part #
>
> You don't often get email from [e-mail]. Learn why this is important
> 此为外部邮件，谨防钓鱼邮件，请注意邮件是否涉及敏感信息
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> Our "how to add a new chip" documentation should point you in the right direction: https://apc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fflashrom.o...https://flashrom.org/contrib_howtos/how_to_add_new_chip.html
>
> But feel free to ask further questions if anything there doesn't seem sufficient for your needs.
>
> On Wed, Mar 20, 2024 at 6:31 AM Vlim  wrote:
>
> Hi, FlashRom team,
>
> I am the FAE director in Gigadevice and I would like to add some part #s to the flashchip.c and flashchip.h.
> Can you please provide some guidance?
>
> Regards,
>
> Victor Lim
> FAE Director
> GigaDevice Semiconductor
> 4088833856
>
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