@@ -14,6 +14,7 @@
**/
+#include <Platform/MemoryMap.h>
#include <Platform/Pcie.h>
#include "AcpiTables.h"
@@ -37,7 +38,21 @@ DefinitionBlock ("SsdtPci.aml", "SSDT", 1, "SNI", "SYNQUACR",
VPID, 16,
}
+ OperationRegion (GPIO, SystemMemory, SYNQUACER_GPIO_BASE, 8)
+ Field (GPIO, DWordAcc, NoLock, Preserve) {
+ , 39,
+ PRDT, 1,
+ , 24,
+ }
+
Method (_STA, 0x0, Serialized) {
+ If (!LEqual (FixedPcdGet8 (PcdPcie0PresenceDetectGpioPin), 0xff)) {
+ Store (PRDT, local0)
+ If (!LEqual (local0, 0x0)) {
+ Return (0x0)
+ }
+ }
+
//
// Check whether the VID/PID of device #1 on bus #0 equals 0xffff.
// If this is not the case, we are dealing with a ghost device,
@@ -62,3 +62,4 @@ [FixedPcd]
gSynQuacerTokenSpaceGuid.PcdNetsecEepromBase
gSynQuacerTokenSpaceGuid.PcdNetsecPhyAddress
+ gSynQuacerTokenSpaceGuid.PcdPcie0PresenceDetectGpioPin
On the SynQuacer Evalution Board, PCIe RC #0 is not clocked if no card is inserted into the PCIe slot, and so any attempt to access the device registers will lock up the system. So let's check the presence detect pin directly in the _STA implementation of PCI0. This needs to be done before the config space check, because that access itself will lock the system if no card is inserted. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> --- Silicon/Socionext/SynQuacer/AcpiTables/AcpiSsdtRootPci.asl | 15 +++++++++++++++ Silicon/Socionext/SynQuacer/AcpiTables/AcpiTables.inf | 1 + 2 files changed, 16 insertions(+) -- 2.11.0 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel