One feedback is to add the new HII setting to the README. Otherwise, looks good!
Reviewed-By: Samer El-Haj-Mahmoud <samer.el-haj-mahm...@arm.com>
> -----Original Message-----
> From: Jeremy Linton <jeremy.lin...@arm.com>
> Sent: Friday, August 20, 2021 12:16 AM
> To: devel@edk2.groups.io
> Cc: p...@akeo.ie; ardb+tianoc...@kernel.org; Andrei Warkentin
> (awarken...@vmware.com) <awarken...@vmware.com>; Sunny Wang
> <sunny.w...@arm.com>; Samer El-Haj-Mahmoud <Samer.El-Haj-
> mahm...@arm.com>; Jeremy Linton <jeremy.lin...@arm.com>
> Subject: [PATCH v3 1/7] Platform/RaspberryPi: Add XHCI/PCI selection menu
>
> Arm has standardized a PCI SMC conduit that can be used
> to access the PCI config space in a standardized way. This
> functionality doesn't yet exist in many OS/Distro's. Lets
> add another advanced config item that allows the user
> to toggle between presenting the XHCI on the base RPi4
> as a platform device, or presenting this newer PCIe
> conduit. The CM4 doesn't have an attached XHCI controller
> soldered to the PCIe, so PCIe mode is the default.
>
> Signed-off-by: Jeremy Linton <jeremy.lin...@arm.com>
> ---
> Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c | 42
> ++++++++++++++++++++++
> .../RaspberryPi/Drivers/ConfigDxe/ConfigDxe.inf | 1 +
> .../RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.uni | 5 +++
> .../RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.vfr | 17 +++++++++
> Platform/RaspberryPi/Include/ConfigVars.h | 4 +++
> Platform/RaspberryPi/RPi3/RPi3.dsc | 6 ++++
> Platform/RaspberryPi/RPi4/RPi4.dsc | 8 +++++
> Platform/RaspberryPi/RaspberryPi.dec | 1 +
> 8 files changed, 84 insertions(+)
>
> diff --git a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
> b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
> index 9e78cb47ad..87f6b4e7bb 100644
> --- a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
> +++ b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
> @@ -43,6 +43,7 @@ extern UINT8 ConfigDxeStrings[];
> STATIC RASPBERRY_PI_FIRMWARE_PROTOCOL *mFwProtocol;
> STATIC UINT32 mModelFamily = 0;
> STATIC UINT32 mModelInstalledMB = 0;
> +STATIC UINT32 mModelRevision = 0;
>
> STATIC EFI_MAC_ADDRESS mMacAddress;
>
> @@ -271,6 +272,40 @@ SetupVariables (
> ASSERT_EFI_ERROR (Status);
> }
>
> + if (mModelFamily >= 4) {
> + if (((mModelRevision >> 4) & 0xFF) == 0x14) {
> + /*
> + * Enable PCIe by default on CM4
> + */
> + Status = PcdSet32S (PcdXhciPci, 2);
> + ASSERT_EFI_ERROR (Status);
> + } else {
> + Size = sizeof (UINT32);
> + Status = gRT->GetVariable (L"XhciPci",
> + &gConfigDxeFormSetGuid,
> + NULL, &Size, &Var32);
> + if (EFI_ERROR (Status) || (Var32 == 0)) {
> + /*
> + * Enable XHCI by default
> + */
> + Status = PcdSet32S (PcdXhciPci, 0);
> + ASSERT_EFI_ERROR (Status);
> + } else {
> + /*
> + * Enable PCIe
> + */
> + Status = PcdSet32S (PcdXhciPci, 1);
> + ASSERT_EFI_ERROR (Status);
> + }
> + }
> + } else {
> + /*
> + * Disable PCIe and XHCI
> + */
> + Status = PcdSet32S (PcdXhciPci, 0);
> + ASSERT_EFI_ERROR (Status);
> + }
> +
> Size = sizeof (AssetTagVar);
> Status = gRT->GetVariable (L"AssetTag",
> &gConfigDxeFormSetGuid,
> @@ -888,6 +923,13 @@ ConfigInitialize (
> DEBUG ((DEBUG_INFO, "Current Raspberry Pi installed RAM size is %d MB\n",
> mModelInstalledMB));
> }
>
> + Status = mFwProtocol->GetModelRevision (&mModelRevision);
> + if (Status != EFI_SUCCESS) {
> + DEBUG ((DEBUG_ERROR, "Couldn't get the Raspberry Pi revision: %r\n",
> Status));
> + } else {
> + DEBUG ((DEBUG_INFO, "Current Raspberry Pi revision %x\n",
> mModelRevision));
> + }
> +
> Status = SetupVariables ();
> if (Status != EFI_SUCCESS) {
> DEBUG ((DEBUG_ERROR, "Couldn't not setup NV vars: %r\n", Status));
> diff --git a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.inf
> b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.inf
> index 4bb2d08550..e6e22ad82e 100644
> --- a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.inf
> +++ b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.inf
> @@ -94,6 +94,7 @@
> gRaspberryPiTokenSpaceGuid.PcdFanOnGpio
> gRaspberryPiTokenSpaceGuid.PcdFanTemp
> gRaspberryPiTokenSpaceGuid.PcdUartInUse
> + gRaspberryPiTokenSpaceGuid.PcdXhciPci
>
> [Depex]
> gPcdProtocolGuid AND gRaspberryPiFirmwareProtocolGuid
> diff --git a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.uni
> b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.uni
> index 466fa852cb..5ec17072c3 100644
> --- a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.uni
> +++ b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.uni
> @@ -57,6 +57,11 @@
> #string STR_ADVANCED_FANTEMP_PROMPT #language en-US "ACPI fan
> temperature"
> #string STR_ADVANCED_FANTEMP_HELP #language en-US "Cycle a fan at C"
>
> +#string STR_ADVANCED_XHCIPCI_PROMPT #language en-US "ACPI
> XHCI/PCIe"
> +#string STR_ADVANCED_XHCIPCI_HELP #language en-US "OS sees XHCI USB
> platform device or PCIe bridge"
> +#string STR_ADVANCED_XHCIPCI_XHCI #language en-US "XHCI"
> +#string STR_ADVANCED_XHCIPCI_PCIE #language en-US "PCIe"
> +
> #string STR_ADVANCED_ASSET_TAG_PROMPT #language en-US "Asset Tag"
> #string STR_ADVANCED_ASSET_TAG_HELP #language en-US "Set the system
> Asset Tag"
>
> diff --git a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.vfr
> b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.vfr
> index fa34eab809..18b3ec726e 100644
> --- a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.vfr
> +++ b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.vfr
> @@ -56,6 +56,11 @@ formset
> name = FanTemp,
> guid = CONFIGDXE_FORM_SET_GUID;
>
> + efivarstore ADVANCED_XHCIPCI_VARSTORE_DATA,
> + attribute = EFI_VARIABLE_BOOTSERVICE_ACCESS |
> EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
> + name = XhciPci,
> + guid = CONFIGDXE_FORM_SET_GUID;
> +
> efivarstore SYSTEM_TABLE_MODE_VARSTORE_DATA,
> attribute = EFI_VARIABLE_BOOTSERVICE_ACCESS |
> EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
> name = SystemTableMode,
> @@ -212,6 +217,18 @@ formset
> default = 60,
> endnumeric;
> endif;
> +
> + suppressif ideqval XhciPci.Value == 2;
> + grayoutif NOT ideqval SystemTableMode.Mode ==
> SYSTEM_TABLE_MODE_ACPI;
> + oneof varid = XhciPci.Value,
> + prompt = STRING_TOKEN(STR_ADVANCED_XHCIPCI_PROMPT),
> + help = STRING_TOKEN(STR_ADVANCED_XHCIPCI_HELP),
> + flags = NUMERIC_SIZE_4 | INTERACTIVE | RESET_REQUIRED,
> + option text = STRING_TOKEN(STR_ADVANCED_XHCIPCI_XHCI), value =
> 0, flags = DEFAULT;
> + option text = STRING_TOKEN(STR_ADVANCED_XHCIPCI_PCIE), value =
> 1, flags = 0;
> + endoneof;
> + endif;
> + endif;
> #endif
> string varid = AssetTag.AssetTag,
> prompt = STRING_TOKEN(STR_ADVANCED_ASSET_TAG_PROMPT),
> diff --git a/Platform/RaspberryPi/Include/ConfigVars.h
> b/Platform/RaspberryPi/Include/ConfigVars.h
> index 142317985a..a5b32b5284 100644
> --- a/Platform/RaspberryPi/Include/ConfigVars.h
> +++ b/Platform/RaspberryPi/Include/ConfigVars.h
> @@ -77,6 +77,10 @@ typedef struct {
> } ADVANCED_FANTEMP_VARSTORE_DATA;
>
> typedef struct {
> + UINT32 Value;
> +} ADVANCED_XHCIPCI_VARSTORE_DATA;
> +
> +typedef struct {
> #define SYSTEM_TABLE_MODE_ACPI 0
> #define SYSTEM_TABLE_MODE_BOTH 1
> #define SYSTEM_TABLE_MODE_DT 2
> diff --git a/Platform/RaspberryPi/RPi3/RPi3.dsc
> b/Platform/RaspberryPi/RPi3/RPi3.dsc
> index 1c8a5408e7..6ab5d1ae6d 100644
> --- a/Platform/RaspberryPi/RPi3/RPi3.dsc
> +++ b/Platform/RaspberryPi/RPi3/RPi3.dsc
> @@ -520,6 +520,12 @@
>
>
> gRaspberryPiTokenSpaceGuid.PcdPlatformResetDelay|L"ResetDelay"|gRaspberr
> yPiTokenSpaceGuid|0x0|0
>
> + # Select XHCI/PCIe mode (not valid on rpi3)
> + #
> + # 0 - DISABLED
> + #
> +
> gRaspberryPiTokenSpaceGuid.PcdXhciPci|L"XhciPci"|gConfigDxeFormSetGuid|0
> x0|0
> +
> #
> # Common UEFI ones.
> #
> diff --git a/Platform/RaspberryPi/RPi4/RPi4.dsc
> b/Platform/RaspberryPi/RPi4/RPi4.dsc
> index dcf9bb5f11..babcbb2f41 100644
> --- a/Platform/RaspberryPi/RPi4/RPi4.dsc
> +++ b/Platform/RaspberryPi/RPi4/RPi4.dsc
> @@ -536,6 +536,14 @@
>
>
> gRaspberryPiTokenSpaceGuid.PcdPlatformResetDelay|L"ResetDelay"|gRaspberr
> yPiTokenSpaceGuid|0x0|0
>
> + # Select XHCI/PCIe mode
> + #
> + # 0 - XHCI Enabled (default on !cm4)
> + # 1 - PCIe Enabled
> + # 2 - PCIe Enabled (default on cm4)
> + #
> +
> gRaspberryPiTokenSpaceGuid.PcdXhciPci|L"XhciPci"|gConfigDxeFormSetGuid|0
> x0|0
> +
> #
> # Common UEFI ones.
> #
> diff --git a/Platform/RaspberryPi/RaspberryPi.dec
> b/Platform/RaspberryPi/RaspberryPi.dec
> index 2ca25ff9e6..797be59274 100644
> --- a/Platform/RaspberryPi/RaspberryPi.dec
> +++ b/Platform/RaspberryPi/RaspberryPi.dec
> @@ -71,3 +71,4 @@
> gRaspberryPiTokenSpaceGuid.PcdPlatformResetDelay|0|UINT32|0x0000001E
> gRaspberryPiTokenSpaceGuid.PcdMmcEnableDma|0|UINT32|0x0000001F
> gRaspberryPiTokenSpaceGuid.PcdUartInUse|1|UINT32|0x00000021
> + gRaspberryPiTokenSpaceGuid.PcdXhciPci|0|UINT32|0x00000022
> --
> 2.13.7
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