[edk2-devel] [PATCH 1/5] Platform/RaspberryPi: Add XHCI/PCI selection menu
Jeremy Linton
jeremy.linton at arm.com
Thu Aug 5 16:35:47 UTC 2021
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 we hide the menu and only allow
PCIe mode.
Signed-off-by: Jeremy Linton <jeremy.linton at 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"|gRaspberryPiTokenSpaceGuid|0x0|0
+ # Select XHCI/PCIe mode (not valid on rpi3)
+ #
+ # 0 - DISABLED
+ #
+ gRaspberryPiTokenSpaceGuid.PcdXhciPci|L"XhciPci"|gConfigDxeFormSetGuid|0x0|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"|gRaspberryPiTokenSpaceGuid|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|0x0|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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