Re: [edk2-devel] [PATCH v4 0/8] Adjust the QemuFwCfgLibMmio and add PEI stage

["Chao Li" <lichao@loongson.cn>]

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Hi Ard,

OK, I will make adjustments according to your suggestions and submit the 
V5 today.


Thanks,
Chao
On 2024/4/29 14:56, Ard Biesheuvel wrote:
> On Mon, 29 Apr 2024 at 03:17, Chao Li<lichao@loongson.cn>  wrote:
>> Hi Ard and Gerd and other maintainers,
>>
>> Could you review this version and give your suggestions?
>>
> This looks ok to me now, modulo a few minor tweaks (see below) that I
> will apply when merging.
>
> I also changed the type signatures to
>
> extern
> VOID
> (EFIAPI *InternalQemuFwCfgReadBytes) (
>    IN UINTN  Size,
>    IN VOID   *Buffer  OPTIONAL
>    );
>
> Note that the EFIAPI applies to the function itself, not the pointer
> so it needs to be inside the ()
>
>
>
> --- a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgMmioPei.c
> +++ b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgMmioPei.c
> @@ -104,7 +104,6 @@ QemuFwCfgInitialize (
>     UINT64                FwCfgDmaAddress;
>     UINT64                FwCfgDmaSize;
>     QEMU_FW_CFG_RESOURCE  *FwCfgResource;
> -  VOID                  *Buffer;
>
>     //
>     // Check whether the Qemu firmware configure resources HOB has been created,
> @@ -125,11 +124,8 @@ QemuFwCfgInitialize (
>     //
>     // Create resouce memory
>     //
> -  Buffer = AllocatePages(EFI_SIZE_TO_PAGES (sizeof (QEMU_FW_CFG_RESOURCE)));
> -  ASSERT (Buffer != NULL);
> -  ZeroMem (Buffer, sizeof (QEMU_FW_CFG_RESOURCE));
> -
> -  FwCfgResource = (QEMU_FW_CFG_RESOURCE *)Buffer;
> +  FwCfgResource = AllocateZeroPool (sizeof (QEMU_FW_CFG_RESOURCE));
> +  ASSERT (FwCfgResource != NULL);
>
>     for (Prev = 0; ; Prev = Node) {
>       Node = fdt_next_node (DeviceTreeBase, Prev, NULL);
> @@ -141,7 +137,7 @@ QemuFwCfgInitialize (
>       // Check for memory node
>       //
>       Type = fdt_getprop (DeviceTreeBase, Node, "compatible", &Len);
> -    if ((Type) &&
> +    if ((Type != NULL) &&
>           (AsciiStrnCmp (Type, "qemu,fw-cfg-mmio", Len) == 0))
>       {
>         //
>
>
> 
>


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