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[60.249.20.69]) by smtp.gmail.com with ESMTPSA id a71sm10846909pfl.129.2017.06.29.02.03.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 29 Jun 2017 02:03:57 -0700 (PDT) X-Original-To: edk2-devel@lists.01.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=jo5/QMs92SlBZukxCf7askJqfPqhcgchgWNJ9r820go=; b=dMXIrB0/RNy2GFAj60LoZB2UVLBn6ue5rYrAcS+8jhkADc9wo+vFgvevYacEnjeiYZ KF2bmCRyfzcYsCqgbhEU7rXcXDzOxu6dV/z9kyc+Wa8/ESbxl3K157Wf9C9VDJyUL0au bZY3DtitIC69YlrrkFTHldGJqudnYO+89KyhA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=jo5/QMs92SlBZukxCf7askJqfPqhcgchgWNJ9r820go=; b=MXIk5FX4DKQTWfEUn2UTwEPBieuKrzBQqDUMkMumu4sWWNWf5d1xFXpVkUf1E9ApAo 0IU4KhmgLy+Yj/5sK1g5E90GU5cIidhL/o6MjfYjs5etq7j0fpHBE4/l5WLj3dn2u+hU quphd0yTQUw/WVvEWL1fuGfq5qmbSN1U4vwCoRgrQewE1BSo8rMMJsRF08ByOfRZ6k3H RMK+E2WqQAgkrVRTMQU3/2fyV2ZWdhtdBCmywLj7P+Lo/yIALIw4530rNDAh6GZxG4KJ zEdzU+T3Klr4ACupCEDkdXq/XBU9997luBB62GnpFsiGEYbkn2nc7AzOhveccHk/9mji ZZqg== X-Gm-Message-State: AKS2vOz3wSfmSer3Hm0KgiD4PNKR+nGlHXJvh8L+jL1jYAe2+R2HjVZy Ovbht+XKJJ462q8K X-Received: by 10.98.133.16 with SMTP id u16mr4324145pfd.140.1498727037746; Thu, 29 Jun 2017 02:03:57 -0700 (PDT) From: Jun Nie To: ard.biesheuvel@linaro.org, leif.lindholm@linaro.org, haojian.zhuang@linaro.org, edk2-devel@lists.01.org Date: Thu, 29 Jun 2017 17:03:50 +0800 Message-Id: <1498727030-26410-1-git-send-email-jun.nie@linaro.org> X-Mailer: git-send-email 1.9.1 Subject: [edk2] [PATCH] EmbeddedPkg/MmcDxe: Align the ExtCSD buffer X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jason.liu@linaro.org, shawn.guo@linaro.org MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Errors-To: edk2-devel-bounces@lists.01.org Sender: "edk2-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_4 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" ExtCSD structure may be read via DMA. So align it to page to avoid data corruption. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jun Nie --- EmbeddedPkg/Universal/MmcDxe/Mmc.h | 2 +- EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c | 11 ++++++++--- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/EmbeddedPkg/Universal/MmcDxe/Mmc.h b/EmbeddedPkg/Universal/Mmc= Dxe/Mmc.h index 8a7d5a3..f3e56ff 100644 --- a/EmbeddedPkg/Universal/MmcDxe/Mmc.h +++ b/EmbeddedPkg/Universal/MmcDxe/Mmc.h @@ -319,7 +319,7 @@ typedef struct { OCR OCRData; CID CIDData; CSD CSDData; - ECSD ECSDData; // MMC V4 extended card spec= ific + ECSD *ECSDData; // MMC V4 extended card spe= cific } CARD_INFO; =20 typedef struct _MMC_HOST_INSTANCE { diff --git a/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c b/EmbeddedPkg= /Universal/MmcDxe/MmcIdentification.c index c28207e..6bb65c3 100644 --- a/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c +++ b/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c @@ -13,6 +13,7 @@ **/ =20 #include +#include #include =20 #include "Mmc.h" @@ -210,12 +211,16 @@ EmmcIdentificationMode ( } =20 // Fetch ECSD + MmcHostInstance->CardInfo.ECSDData =3D AllocatePages (1); + if (MmcHostInstance->CardInfo.ECSDData =3D=3D NULL) { + return EFI_BUFFER_TOO_SMALL; + } Status =3D Host->SendCommand (Host, MMC_CMD8, 0); if (EFI_ERROR (Status)) { DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): ECSD fetch error, Stat= us=3D%r.\n", Status)); } =20 - Status =3D Host->ReadBlockData (Host, 0, 512, (UINT32 *)&(MmcHostInstanc= e->CardInfo.ECSDData)); + Status =3D Host->ReadBlockData (Host, 0, 512, (UINT32 *)MmcHostInstance-= >CardInfo.ECSDData); if (EFI_ERROR (Status)) { DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): ECSD read error, Statu= s=3D%r.\n", Status)); return Status; @@ -237,7 +242,7 @@ EmmcIdentificationMode ( Media->LogicalBlocksPerPhysicalBlock =3D 1; Media->IoAlign =3D 4; // Compute last block using bits [215:212] of the ECSD - Media->LastBlock =3D MmcHostInstance->CardInfo.ECSDData.SECTOR_COUNT - 1= ; // eMMC isn't supposed to report this for + Media->LastBlock =3D MmcHostInstance->CardInfo.ECSDData->SECTOR_COUNT - = 1; // eMMC isn't supposed to report this for // Cards <2GB in size, but the model does. =20 // Setup card type @@ -258,7 +263,7 @@ InitializeEmmcDevice ( UINT32 TimingMode[4] =3D {EMMCHS52DDR1V2, EMMCHS52DDR1V8, EMMCHS52, = EMMCHS26}; =20 Host =3D MmcHostInstance->MmcHost; - ECSDData =3D &MmcHostInstance->CardInfo.ECSDData; + ECSDData =3D MmcHostInstance->CardInfo.ECSDData; if (ECSDData->DEVICE_TYPE =3D=3D EMMCBACKWARD) return EFI_SUCCESS; =20 --=20 1.9.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel