On Mon, Nov 19, 2018 at 11:16:09AM -0800, Ard Biesheuvel wrote: > On Mon, 19 Nov 2018 at 11:10, Leif Lindholm <leif.lindh...@linaro.org> wrote: > > > > On Fri, Nov 16, 2018 at 05:29:05PM -0800, Ard Biesheuvel wrote: > > > On Fri, 16 Nov 2018 at 16:45, Ard Biesheuvel <ard.biesheu...@linaro.org> > > > wrote: > > > > > > > > NorFlashQemuLib is one of the last remaining drivers in ArmVirtPkg > > > > that are not based on the device tree received from QEMU. > > > > > > > > For ArmVirtQemu, this does not really matter, given that the NOR > > > > flash banks are always the same: the PEI code is linked to execute > > > > in place from flash bank #0, and the fixed varstore PCDs refer to > > > > flash bank #1 directly. > > > > > > > > However, ArmVirtQemuKernel can execute at any offset, and flash bank > > > > > > #0 is configured as secure-only when running with support for EL3 enabled. > > > > Never gets old :) > > No this is entirely reasonable: it makes perfect sense for a NOR flash > at address 0x0 to be secure only on a system that implements EL3, > since mach-virt's default reset vector is 0x0.
*cough* sorry, I was referring to the leading #. > > > > In this case, NorFlashQemuLib should not expose the first flash bank > > > > at all. > > > > > > > > To prevent introducing too much internal knowledge about which flash > > > > bank is accessible under which circumstances, let's switch to using > > > > the DTB to decide which flash banks to expose to the NOR flash driver. > > > > Does this mean we as a side effect get rid of the limitation that the > > pflash image needs to be exactly 64MB. Or does that require further > > changes on the QEMU side? > > No that is a QEMU thing. OK, thanks for confirming. But this should mean that we don't need any changes on the guest sides if/when we do fix this in QEMU? / Leif > > If it does, please add a comment to the commit message. > > Either way: > > Reviewed-by: Leif Lindholm <leif.lindh...@linaro.org> > > > > Thanks > > > > > > > > > Contributed-under: TianoCore Contribution Agreement 1.1 > > > > Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org> > > > > --- > > > > ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.c | 84 > > > > +++++++++++++++----- > > > > ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.inf | 12 +++ > > > > 2 files changed, 75 insertions(+), 21 deletions(-) > > > > > > > > diff --git a/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.c > > > > b/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.c > > > > index e3bbae5b06c5..dc0a15e77170 100644 > > > > --- a/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.c > > > > +++ b/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.c > > > > @@ -1,6 +1,6 @@ > > > > /** @file > > > > > > > > - Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR> > > > > + Copyright (c) 2014-2018, Linaro Ltd. All rights reserved.<BR> > > > > > > > > This program and the accompanying materials > > > > are licensed and made available under the terms and conditions of the > > > > BSD License > > > > @@ -12,13 +12,16 @@ > > > > > > > > **/ > > > > > > > > +#include <Library/BaseLib.h> > > > > +#include <Library/DebugLib.h> > > > > #include <Library/NorFlashPlatformLib.h> > > > > +#include <Library/UefiBootServicesTableLib.h> > > > > + > > > > +#include <Protocol/FdtClient.h> > > > > > > > > #define QEMU_NOR_BLOCK_SIZE SIZE_256KB > > > > -#define QEMU_NOR0_BASE 0x0 > > > > -#define QEMU_NOR0_SIZE SIZE_64MB > > > > -#define QEMU_NOR1_BASE 0x04000000 > > > > -#define QEMU_NOR1_SIZE SIZE_64MB > > > > + > > > > +#define MAX_FLASH_BANKS 4 > > > > > > > > EFI_STATUS > > > > NorFlashPlatformInitialization ( > > > > @@ -28,21 +31,7 @@ NorFlashPlatformInitialization ( > > > > return EFI_SUCCESS; > > > > } > > > > > > > > -NOR_FLASH_DESCRIPTION mNorFlashDevices[] = { > > > > - { > > > > - QEMU_NOR0_BASE, > > > > - QEMU_NOR0_BASE, > > > > - QEMU_NOR0_SIZE, > > > > - QEMU_NOR_BLOCK_SIZE, > > > > - {0xF9B94AE2, 0x8BA6, 0x409B, {0x9D, 0x56, 0xB9, 0xB4, 0x17, 0xF5, > > > > 0x3C, 0xB3}} > > > > - }, { > > > > - QEMU_NOR1_BASE, > > > > - QEMU_NOR1_BASE, > > > > - QEMU_NOR1_SIZE, > > > > - QEMU_NOR_BLOCK_SIZE, > > > > - {0x8047DB4B, 0x7E9C, 0x4C0C, {0x8E, 0xBC, 0xDF, 0xBB, 0xAA, 0xCA, > > > > 0xCE, 0x8F}} > > > > - } > > > > -}; > > > > +NOR_FLASH_DESCRIPTION mNorFlashDevices[MAX_FLASH_BANKS]; > > > > > > > > EFI_STATUS > > > > NorFlashPlatformGetDevices ( > > > > @@ -50,7 +39,60 @@ NorFlashPlatformGetDevices ( > > > > OUT UINT32 *Count > > > > ) > > > > { > > > > + FDT_CLIENT_PROTOCOL *FdtClient; > > > > + INT32 Node; > > > > + EFI_STATUS Status; > > > > + EFI_STATUS FindNodeStatus; > > > > + CONST UINT64 *Reg; > > > > + UINT32 RegSize; > > > > + CONST CHAR8 *NodeStatus; > > > > + UINTN Num; > > > > + > > > > + Status = gBS->LocateProtocol (&gFdtClientProtocolGuid, NULL, > > > > + (VOID **)&FdtClient); > > > > + ASSERT_EFI_ERROR (Status); > > > > + > > > > + Num = 0; > > > > + for (FindNodeStatus = FdtClient->FindCompatibleNode (FdtClient, > > > > + "cfi-flash", &Node); > > > > + !EFI_ERROR (FindNodeStatus); > > > > + FindNodeStatus = FdtClient->FindNextCompatibleNode (FdtClient, > > > > + "cfi-flash", Node, &Node)) { > > > > + > > > > + Status = FdtClient->GetNodeProperty (FdtClient, Node, "status", > > > > + (CONST VOID **)&NodeStatus, NULL); > > > > + if (!EFI_ERROR (Status) && AsciiStrnCmp (NodeStatus, "ok", 2) != > > > > 0) { > > > > + continue; > > > > + } > > > > + > > > > + Status = FdtClient->GetNodeProperty (FdtClient, Node, "reg", > > > > + (CONST VOID **)&Reg, &RegSize); > > > > + if (EFI_ERROR (Status)) { > > > > + DEBUG ((EFI_D_ERROR, "%a: GetNodeProperty () failed (Status == > > > > %r)\n", > > > > + __FUNCTION__, Status)); > > > > + continue; > > > > + } > > > > + > > > > + ASSERT ((RegSize % (2 * sizeof(UINT64))) == 0); > > > > + > > > > + while (RegSize > 0) { > > > > + mNorFlashDevices[Num].DeviceBaseAddress = (UINTN)SwapBytes64 > > > > (Reg[0]); > > > > + mNorFlashDevices[Num].RegionBaseAddress = (UINTN)SwapBytes64 > > > > (Reg[0]); > > > > + mNorFlashDevices[Num].Size = (UINTN)SwapBytes64 > > > > (Reg[1]); > > > > + mNorFlashDevices[Num].BlockSize = QEMU_NOR_BLOCK_SIZE; > > > > + > > > > + Num++; > > > > + Reg += 2; > > > > + RegSize -= 2 * sizeof(UINT64); > > > > + > > > > + if (Num >= MAX_FLASH_BANKS) { > > > > + goto Finished; > > > > + } > > > > + } > > > > + } > > > > + > > > > +Finished: > > > > *NorFlashDescriptions = mNorFlashDevices; > > > > - *Count = ARRAY_SIZE (mNorFlashDevices); > > > > + *Count = Num; > > > > return EFI_SUCCESS; > > > > } > > > > diff --git a/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.inf > > > > b/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.inf > > > > index 126d1671f544..d86ff36dbd58 100644 > > > > --- a/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.inf > > > > +++ b/ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.inf > > > > @@ -28,3 +28,15 @@ > > > > [Packages] > > > > MdePkg/MdePkg.dec > > > > ArmPlatformPkg/ArmPlatformPkg.dec > > > > + ArmVirtPkg/ArmVirtPkg.dec > > > > + > > > > +[LibraryClasses] > > > > + BaseLib > > > > + DebugLib > > > > + UefiBootServicesTableLib > > > > + > > > > +[Protocols] > > > > + gFdtClientProtocolGuid ## CONSUMES > > > > + > > > > +[Depex] > > > > + gFdtClientProtocolGuid > > > > -- > > > > 2.17.1 > > > > _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel