soc/intel/tigerlake: add devicetree option PcieRpSlotImplemented

Add the UPD PcieRpSlotImplemented as devicetree option. To keep the PI
bit set for any slots of already existing boards, add set the option
PcieRpSlotImplemented=1 where appropriate.

Change-Id: Ia6f685df3c22c74ae764693329a69817bf3cd01d
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60946
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/mainboard/google/deltaur/variants/baseboard/devicetree.cb

@@ -50,6 +50,7 @@ chip soc/intel/tigerlake
 	register "PcieRpEnable[8]" = "1"
 	register "PcieClkSrcUsage[2]" = "8"
 	register "PcieClkSrcClkReq[2]" = "2"
+	register "PcieRpSlotImplemented[8]" = "1"
 
 	# Mark unused SRCCLKREQs as so
 	register "PcieClkSrcUsage[0]" = "PCIE_CLK_NOTUSED"

src/mainboard/google/volteer/variants/baseboard/devicetree.cb

@@ -120,11 +120,13 @@ chip soc/intel/tigerlake
 	register "PcieRpLtrEnable[8]" = "1"
 	register "PcieClkSrcUsage[0]" = "8"
 	register "PcieClkSrcClkReq[0]" = "0"
+	register "PcieRpSlotImplemented[8]" = "1"
 
 	# Enable Optane PCIE 11 using clk 0
 	register "PcieRpEnable[10]" = "1"
 	register "PcieRpLtrEnable[10]" = "1"
 	register "HybridStorageMode" = "0"
+	register "PcieRpSlotImplemented[10]" = "1"
 
 	# Enable SD Card PCIE 8 using clk 3
 	register "PcieRpEnable[7]" = "1"
@@ -138,6 +140,7 @@ chip soc/intel/tigerlake
 	register "PcieRpLtrEnable[6]" = "1"
 	register "PcieClkSrcUsage[1]" = "6"
 	register "PcieClkSrcClkReq[1]" = "1"
+	register "PcieRpSlotImplemented[6]" = "1"
 
 	# Mark SRCCLKREQ pins as unused that are routed for a Non-Clkreq functionality
 	register "PcieClkSrcUsage[2]" = "PCIE_CLK_NOTUSED"

src/mainboard/google/volteer/variants/voema/overridetree.cb

@@ -15,6 +15,7 @@ chip soc/intel/tigerlake
 	register "PcieRpEnable[6]" = "0"
 	register "PcieRpLtrEnable[6]" = "0"
 	register "PcieClkSrcUsage[1]" = "PCIE_CLK_NOTUSED"
+	register "PcieRpSlotImplemented[6]" = "1"
 
 	# Disable SD Card PCIE 8
 	register "PcieRpEnable[7]" = "0"

src/mainboard/intel/tglrvp/variants/tglrvp_up3/devicetree.cb

@@ -44,6 +44,10 @@ chip soc/intel/tigerlake
 	register "PcieRpEnable[3]" = "1"
 	register "PcieRpEnable[8]" = "1"
 	register "PcieRpEnable[10]" = "1"
+	register "PcieRpSlotImplemented[2]" = "1"
+	register "PcieRpSlotImplemented[3]" = "1"
+	register "PcieRpSlotImplemented[8]" = "1"
+	register "PcieRpSlotImplemented[10]" = "1"
 
 	# Enable RP LTR
 	register "PcieRpLtrEnable[2]" = "1"

src/mainboard/intel/tglrvp/variants/tglrvp_up4/devicetree.cb

@@ -45,6 +45,10 @@ chip soc/intel/tigerlake
 	register "PcieRpEnable[3]" = "1"
 	register "PcieRpEnable[8]" = "1"
 	register "PcieRpEnable[10]" = "1"
+	register "PcieRpSlotImplemented[2]" = "1"
+	register "PcieRpSlotImplemented[3]" = "1"
+	register "PcieRpSlotImplemented[8]" = "1"
+	register "PcieRpSlotImplemented[10]" = "1"
 
 	# Enable PR LTR
 	register "PcieRpLtrEnable[2]" = "1"

src/mainboard/starlabs/labtop/variants/tgl/devicetree.cb

@@ -181,6 +181,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[8]"		= "1"
 			register "PcieClkSrcUsage[3]"		= "0x08"
 			register "PcieClkSrcClkReq[3]"		= "3"
+			register "PcieRpSlotImplemented[8]"	= "1"
 			smbios_slot_desc "SlotTypeM2Socket3" "SlotLengthOther" "M.2/M 2280" "SlotDataBusWidth4X"
 		end
 		device pci 1d.1 off end						# PCI Express Port 10

src/mainboard/system76/darp7/devicetree.cb

@@ -285,6 +285,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[7]" = "1"
 			register "PcieClkSrcUsage[1]" = "7"
 			register "PcieClkSrcClkReq[1]" = "1"
+			register "PcieRpSlotImplemented[7]" = "1"
 		end
 		device ref pcie_rp9 on
 			# PCIe root port #9 x4, Clock 4 (SSD0)
@@ -292,6 +293,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[8]" = "1"
 			register "PcieClkSrcUsage[4]" = "8"
 			register "PcieClkSrcClkReq[4]" = "4"
+			register "PcieRpSlotImplemented[8]" = "1"
 			chip soc/intel/common/block/pcie/rtd3
 				register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_D14)" # SSD_PWR_EN
 				register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_H0)" # GPP_H0_RTD3

src/mainboard/system76/galp5/devicetree.cb

@@ -303,6 +303,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[10]" = "1"
 			register "PcieClkSrcUsage[1]" = "10"
 			register "PcieClkSrcClkReq[1]" = "1"
+			register "PcieRpSlotImplemented[10]" = "1"
 		end
 		device ref pch_espi on
 			register "gen1_dec" = "0x00040069"

src/mainboard/system76/gaze16/variants/3050/overridetree.cb

@@ -62,6 +62,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[7]" = "1"
 			register "PcieClkSrcUsage[8]" = "7"
 			register "PcieClkSrcClkReq[8]" = "8"
+			register "PcieRpSlotImplemented[7]" = "1"
 		end
 		device ref pcie_rp9 on
 			# PCIe root port #9 x4, Clock 9 (SSD1)
@@ -69,6 +70,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[8]" = "1"
 			register "PcieClkSrcUsage[9]" = "8"
 			register "PcieClkSrcClkReq[9]" = "9"
+			register "PcieRpSlotImplemented[8]" = "1"
 		end
 	end
 end

src/mainboard/system76/gaze16/variants/3060/overridetree.cb

@@ -62,6 +62,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[7]" = "1"
 			register "PcieClkSrcUsage[2]" = "7"
 			register "PcieClkSrcClkReq[2]" = "2"
+			register "PcieRpSlotImplemented[7]" = "1"
 		end
 		device ref pcie_rp9 on
 			# PCIe root port #9 x4, Clock 10 (SSD2)
@@ -69,6 +70,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[8]" = "1"
 			register "PcieClkSrcUsage[10]" = "8"
 			register "PcieClkSrcClkReq[10]" = "10"
+			register "PcieRpSlotImplemented[8]" = "1"
 		end
 		device ref gbe on end
 	end

src/mainboard/system76/lemp10/devicetree.cb

@@ -243,6 +243,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[2]" = "1"
 			register "PcieClkSrcUsage[1]" = "2"
 			register "PcieClkSrcClkReq[1]" = "1"
+			register "PcieRpSlotImplemented[2]" = "1"
 		end
 		device ref pcie_rp6 on
 			# PCIe root port #6 x1, Clock 2 (CARD)
@@ -258,6 +259,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[8]" = "1"
 			register "PcieClkSrcUsage[0]" = "8"
 			register "PcieClkSrcClkReq[0]" = "0"
+			register "PcieRpSlotImplemented[8]" = "1"
 			chip soc/intel/common/block/pcie/rtd3
 				register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_D14)" # SSD2_PWR_DN#
 				register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_D9)" # GPP_D13_RTD3 (labeled incorrectly)

src/mainboard/system76/oryp8/devicetree.cb

@@ -188,6 +188,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[7]" = "1"
 			register "PcieClkSrcUsage[2]" = "7"
 			register "PcieClkSrcClkReq[2]" = "2"
+			register "PcieRpSlotImplemented[7]" = "1"
 		end
 		device ref pcie_rp9 on
 			# PCIe root port #9 x4, Clock 6 (SSD2)
@@ -195,6 +196,7 @@ chip soc/intel/tigerlake
 			register "PcieRpLtrEnable[8]" = "1"
 			register "PcieClkSrcUsage[6]" = "8"
 			register "PcieClkSrcClkReq[6]" = "6"
+			register "PcieRpSlotImplemented[8]" = "1"
 		end
 		device ref pch_espi on
 			register "gen1_dec" = "0x00040069" # EC PM channel

src/soc/intel/tigerlake/chip.h

@@ -248,6 +248,8 @@ struct soc_intel_tigerlake_config {
 	/* PCIe Root Ports */
 	uint8_t PcieRpEnable[CONFIG_MAX_ROOT_PORTS];
 	uint8_t PcieRpHotPlug[CONFIG_MAX_ROOT_PORTS];
+	/* Implemented as slot or built-in? */
+	uint8_t PcieRpSlotImplemented[CONFIG_MAX_ROOT_PORTS];
 	/* PCIe output clocks type to PCIe devices.
 	 * 0-23: PCH rootport, 0x70: LAN, 0x80: unspecified but in use,
 	 * 0xFF: not used */

src/soc/intel/tigerlake/fsp_params.c

@@ -402,6 +402,7 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd)
 			config->PcieRpAdvancedErrorReporting[i];
 		params->PcieRpHotPlug[i] = config->PcieRpHotPlug[i];
 		params->PciePtm[i] = config->PciePtm[i];
+		params->PcieRpSlotImplemented[i] = config->PcieRpSlotImplemented[i];
 	}
 
 	/* Enable ClkReqDetect for enabled port */