[edk2-devel] [edk2-platforms][PATCH v2 4/5] Platform/RPi3/PlatformSmbiosDxe: Populate BIOS major/minor from PCD

[Leif Lindholm]

On Tue, Oct 08, 2019 at 01:38:40PM +0100, Pete Batard wrote:
> String parsing code is added to BIOSInfoUpdateSmbiosType0() so that
> any numeric "x.y" value being passed in PcdFirmwareVersionString is
> now used to populate the BIOS major and minor.
> 
> Signed-off-by: Pete Batard <pete at akeo.ie>
> ---
>  Platform/RaspberryPi/RPi3/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.c | 44 +++++++++++++++++++-
>  1 file changed, 43 insertions(+), 1 deletion(-)
> 
> diff --git a/Platform/RaspberryPi/RPi3/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.c b/Platform/RaspberryPi/RPi3/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.c
> index 8a4840267780..66ffadd0cade 100644
> --- a/Platform/RaspberryPi/RPi3/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.c
> +++ b/Platform/RaspberryPi/RPi3/Drivers/PlatformSmbiosDxe/PlatformSmbiosDxe.c
> @@ -41,7 +41,9 @@
>  #include <Library/UefiBootServicesTableLib.h>
>  #include <Library/PrintLib.h>
>  
> -static RASPBERRY_PI_FIRMWARE_PROTOCOL *mFwProtocol;
> +#define SMB_IS_DIGIT(c)  (((c) >= '0') && ((c) <= '9'))
> +
> +STATIC RASPBERRY_PI_FIRMWARE_PROTOCOL *mFwProtocol;

Style fix only.

/
    Leif
>  
>  /***********************************************************************
>          SMBIOS data definition  TYPE0  BIOS Information
> @@ -618,6 +620,46 @@ BIOSInfoUpdateSmbiosType0 (
>    UnicodeStrToAsciiStrS ((CHAR16*)PcdGetPtr (PcdFirmwareVersionString),
>      mBiosVersion, sizeof (mBiosVersion));
>  
> +  // Look for a "x.y" numeric string anywhere in mBiosVersion and
> +  // try to parse it to populate the BIOS major and minor.
> +  for (i = 0; (i < AsciiStrLen (mBiosVersion)) && (State < 4); i++) {
> +    switch (State) {
> +    case 0:
> +      if (!SMB_IS_DIGIT (mBiosVersion[i]))
> +        break;
> +      Value[0] = Value[1] = 0;
> +      State++;
> +      // Fall through
> +    case 1:
> +    case 3:
> +      if (SMB_IS_DIGIT (mBiosVersion[i])) {
> +        Value[State / 2] = (Value[State / 2] * 10) + (mBiosVersion[i] - '0');
> +        if (Value[State / 2] > 255) {
> +          while (SMB_IS_DIGIT (mBiosVersion[i + 1]))
> +            i++;
> +          // Reset our state (we may have something like "Firmware X83737.1 v1.23")
> +          State = 0;
> +        }
> +      } else {
> +        State++;
> +      }
> +      if (State != 2)
> +        break;
> +      // Fall through
> +    case 2:
> +      if ((mBiosVersion[i] == '.') && (SMB_IS_DIGIT (mBiosVersion[i + 1]))) {
> +        State++;
> +      } else {
> +        State = 0;
> +      }
> +      break;
> +    }
> +  }
> +  if ((State == 3) || (State == 4)) {
> +    mBIOSInfoType0.SystemBiosMajorRelease = (UINT8)Value[0];
> +    mBIOSInfoType0.SystemBiosMinorRelease = (UINT8)Value[1];
> +  }
> +
>    LogSmbiosData ((EFI_SMBIOS_TABLE_HEADER*)&mBIOSInfoType0, mBIOSInfoType0Strings, NULL);
>  }
>  
> -- 
> 2.21.0.windows.1
> 

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