From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: M1cha <sigmaepsilon92@gmail.com>
Cc: "edk2-devel@lists.01.org" <edk2-devel@lists.01.org>,
Leif Lindholm <leif.lindholm@linaro.org>
Subject: Re: [PATCH] EmbeddedPkg/PrePiLib: add support for v2 sections
Date: Tue, 12 Dec 2017 10:46:48 +0000 [thread overview]
Message-ID: <CAKv+Gu-RkaH_dvCPnjUwq4NqCRW4k5ownvDfm_x5=xQdWK7CFA@mail.gmail.com> (raw)
In-Reply-To: <20171212065219.11843-1-sigmaepsilon92@gmail.com>
On 12 December 2017 at 06:52, M1cha <sigmaepsilon92@gmail.com> wrote:
> From: Michael Zimmermann <sigmaepsilon92@gmail.com>
>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Michael Zimmermann <sigmaepsilon92@gmail.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Pushed as 4efc8a402d155fa5c80dac7d1f576b6dd1d3defb
Thanks.
> ---
> EmbeddedPkg/Library/PrePiLib/FwVol.c | 61 ++++++++++++++++----
> 1 file changed, 50 insertions(+), 11 deletions(-)
>
> diff --git a/EmbeddedPkg/Library/PrePiLib/FwVol.c b/EmbeddedPkg/Library/PrePiLib/FwVol.c
> index 530fc15dca1c..d513de351ff5 100644
> --- a/EmbeddedPkg/Library/PrePiLib/FwVol.c
> +++ b/EmbeddedPkg/Library/PrePiLib/FwVol.c
> @@ -296,35 +296,61 @@ FfsProcessSection (
> UINT32 SectionLength;
> UINT32 ParsedLength;
> EFI_COMPRESSION_SECTION *CompressionSection;
> + EFI_COMPRESSION_SECTION2 *CompressionSection2;
> UINT32 DstBufferSize;
> VOID *ScratchBuffer;
> UINT32 ScratchBufferSize;
> VOID *DstBuffer;
> UINT16 SectionAttribute;
> UINT32 AuthenticationStatus;
> + CHAR8 *CompressedData;
> + UINTN CompressedDataLength;
>
>
> *OutputBuffer = NULL;
> ParsedLength = 0;
> Status = EFI_NOT_FOUND;
> while (ParsedLength < SectionSize) {
> + if (IS_SECTION2 (Section)) {
> + ASSERT (SECTION2_SIZE (Section) > 0x00FFFFFF);
> + }
> +
> if (Section->Type == SectionType) {
> - *OutputBuffer = (VOID *)(Section + 1);
> + if (IS_SECTION2 (Section)) {
> + *OutputBuffer = (VOID *)((UINT8 *) Section + sizeof (EFI_COMMON_SECTION_HEADER2));
> + } else {
> + *OutputBuffer = (VOID *)((UINT8 *) Section + sizeof (EFI_COMMON_SECTION_HEADER));
> + }
>
> return EFI_SUCCESS;
> } else if ((Section->Type == EFI_SECTION_COMPRESSION) || (Section->Type == EFI_SECTION_GUID_DEFINED)) {
>
> if (Section->Type == EFI_SECTION_COMPRESSION) {
> - CompressionSection = (EFI_COMPRESSION_SECTION *) Section;
> - SectionLength = *(UINT32 *)Section->Size & 0x00FFFFFF;
> + if (IS_SECTION2 (Section)) {
> + CompressionSection2 = (EFI_COMPRESSION_SECTION2 *) Section;
> + SectionLength = SECTION2_SIZE (Section);
>
> - if (CompressionSection->CompressionType != EFI_STANDARD_COMPRESSION) {
> - return EFI_UNSUPPORTED;
> + if (CompressionSection2->CompressionType != EFI_STANDARD_COMPRESSION) {
> + return EFI_UNSUPPORTED;
> + }
> +
> + CompressedData = (CHAR8 *) ((EFI_COMPRESSION_SECTION2 *) Section + 1);
> + CompressedDataLength = (UINT32) SectionLength - sizeof (EFI_COMPRESSION_SECTION2);
> + } else {
> + CompressionSection = (EFI_COMPRESSION_SECTION *) Section;
> + SectionLength = SECTION_SIZE (Section);
> +
> + if (CompressionSection->CompressionType != EFI_STANDARD_COMPRESSION) {
> + return EFI_UNSUPPORTED;
> + }
> +
> + CompressedData = (CHAR8 *) ((EFI_COMPRESSION_SECTION *) Section + 1);
> + CompressedDataLength = (UINT32) SectionLength - sizeof (EFI_COMPRESSION_SECTION);
> }
>
> Status = UefiDecompressGetInfo (
> - (UINT8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),
> - (UINT32) SectionLength - sizeof (EFI_COMPRESSION_SECTION),
> + CompressedData,
> + CompressedDataLength,
> &DstBufferSize,
> &ScratchBufferSize
> );
> @@ -362,13 +388,23 @@ FfsProcessSection (
> // DstBuffer still is one section. Adjust DstBuffer offset, skip EFI section header
> // to make section data at page alignment.
> //
> - DstBuffer = (UINT8 *)DstBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER);
> + if (IS_SECTION2 (Section))
> + DstBuffer = (UINT8 *)DstBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER2);
> + else
> + DstBuffer = (UINT8 *)DstBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER);
> //
> // Call decompress function
> //
> if (Section->Type == EFI_SECTION_COMPRESSION) {
> + if (IS_SECTION2 (Section)) {
> + CompressedData = (CHAR8 *) ((EFI_COMPRESSION_SECTION2 *) Section + 1);
> + }
> + else {
> + CompressedData = (CHAR8 *) ((EFI_COMPRESSION_SECTION *) Section + 1);
> + }
> +
> Status = UefiDecompress (
> - (CHAR8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),
> + CompressedData,
> DstBuffer,
> ScratchBuffer
> );
> @@ -397,12 +433,15 @@ FfsProcessSection (
> }
> }
>
> + if (IS_SECTION2 (Section)) {
> + SectionLength = SECTION2_SIZE (Section);
> + } else {
> + SectionLength = SECTION_SIZE (Section);
> + }
> //
> - // Size is 24 bits wide so mask upper 8 bits.
> // SectionLength is adjusted it is 4 byte aligned.
> // Go to the next section
> //
> - SectionLength = *(UINT32 *)Section->Size & 0x00FFFFFF;
> SectionLength = GET_OCCUPIED_SIZE (SectionLength, 4);
> ASSERT (SectionLength != 0);
> ParsedLength += SectionLength;
> --
> 2.15.1
>
next prev parent reply other threads:[~2017-12-12 10:42 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-12 6:52 [PATCH] EmbeddedPkg/PrePiLib: add support for v2 sections M1cha
2017-12-12 10:46 ` Ard Biesheuvel [this message]
-- strict thread matches above, loose matches on Subject: below --
2017-12-11 7:39 Michael Zimmermann
2017-12-11 18:22 ` Ard Biesheuvel
2017-12-11 21:17 ` Ard Biesheuvel
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