soc/intel/common/pch: Decouple CLIENT from BASE

In preparation to add a third option, have "Client" platforms select a
dedicated Kconfig option instead of the common "_BASE" option. Rewrite
the help texts to clarify what "Client" and "Server" mean, because the
terms refer to the type of silicon and not to the market segment. Some
uniprocessor (single-socket) servers are actually client platforms and
there are some multi-socket workstations based on a server platform.

Change-Id: I646729d709f60ca2b5e74df18c2b4e52f9b10e6b
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65951
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>

src/soc/intel/alderlake/Kconfig

@@ -112,7 +112,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG
 	select SOC_INTEL_COMMON_BASECODE
 	select SOC_INTEL_COMMON_FSP_RESET
-	select SOC_INTEL_COMMON_PCH_BASE
+	select SOC_INTEL_COMMON_PCH_CLIENT
 	select SOC_INTEL_COMMON_RESET
 	select SOC_INTEL_CSE_SEND_EOP_EARLY
 	select SOC_INTEL_CSE_SET_EOP

src/soc/intel/cannonlake/Kconfig

@@ -105,7 +105,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG
 	select SOC_INTEL_COMMON_FSP_RESET
 	select SOC_INTEL_COMMON_NHLT
-	select SOC_INTEL_COMMON_PCH_BASE
+	select SOC_INTEL_COMMON_PCH_CLIENT
 	select SOC_INTEL_COMMON_RESET
 	select SOC_INTEL_MEM_MAPPED_PM_CONFIGURATION
 	select SSE2

src/soc/intel/common/pch/Kconfig

@@ -1,28 +1,32 @@
+config SOC_INTEL_COMMON_PCH_CLIENT
+	bool
+	select SOC_INTEL_COMMON_PCH_BASE
+	help
+	  Selected by "Client" platforms, i.e. desktops, workstations,
+	  laptops, tablets... This also includes uniprocessor servers
+	  based on the same silicon as desktops and workstations. The
+	  "Client" platforms include additional IP blocks that are of
+	  little to no use on servers.
+
+config SOC_INTEL_COMMON_PCH_SERVER
+	bool
+	select SOC_INTEL_COMMON_PCH_BASE
+	help
+	  Selected by "Server" platforms, i.e. multi-socket capable
+	  platforms used in large servers and workstations, such as
+	  those using the Lewisburg (C620) PCH.
+
 config SOC_INTEL_COMMON_PCH_BASE
 	bool
 	depends on SOC_INTEL_COMMON_BLOCK
 	help
-	  All common PCH code blocks between Gen-6 till latest-PCH should be
+	  This option is meant to be selected by the specific options above.
-	  part of this directory. A SoC Kconfig might select this option to include
-	  base PCH package while building new SOC block. Currently majority of
-	  common IP code blocks are part of soc/intel/common/block/ and
-	  SoC Kconfig just select those Kconfig option. Addition to that SoC
-	  code now having option to select required base PCH block to include
-	  common IP block.
-
-config SOC_INTEL_COMMON_PCH_SERVER
-	def_bool n
-	depends on SOC_INTEL_COMMON_PCH_BASE
-	help
-	  SERVER is a subset of the COMMON_PCH_BASE and limits support to
-	  server PCH devices (ex:, Intel C620 - Lewisburg).
 
 if SOC_INTEL_COMMON_PCH_BASE
 
 source "src/soc/intel/common/pch/*/Kconfig"
 
 config PCH_SPECIFIC_BASE_OPTIONS
-	# Always include the BASE (SERVER) subset of devices
 	def_bool y
 	select SOC_INTEL_COMMON_BLOCK_CHIP_CONFIG
 	select SOC_INTEL_COMMON_BLOCK_CSE
@@ -48,9 +52,7 @@ config PCH_SPECIFIC_BASE_OPTIONS
 	select SOUTHBRIDGE_INTEL_COMMON_SMBUS
 
 config PCH_SPECIFIC_CLIENT_OPTIONS
-	# Include the CLIENT devices if this is not a SERVER
+	def_bool SOC_INTEL_COMMON_PCH_CLIENT
-	def_bool n if SOC_INTEL_COMMON_PCH_SERVER
-	def_bool y if !SOC_INTEL_COMMON_PCH_SERVER
 	select SOC_INTEL_COMMON_BLOCK_DSP
 	select SOC_INTEL_COMMON_BLOCK_GRAPHICS
 	select SOC_INTEL_COMMON_BLOCK_I2C

src/soc/intel/elkhartlake/Kconfig

@@ -56,7 +56,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_SMM
 	select SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP
 	select SOC_INTEL_COMMON_FSP_RESET
-	select SOC_INTEL_COMMON_PCH_BASE
+	select SOC_INTEL_COMMON_PCH_CLIENT
 	select SOC_INTEL_COMMON_RESET
 	select SOC_INTEL_MEM_MAPPED_PM_CONFIGURATION
 	select SSE2

src/soc/intel/icelake/Kconfig

@@ -54,7 +54,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP
 	select SOC_INTEL_COMMON_BLOCK_THERMAL_PCI_DEV
 	select SOC_INTEL_COMMON_FSP_RESET
-	select SOC_INTEL_COMMON_PCH_BASE
+	select SOC_INTEL_COMMON_PCH_CLIENT
 	select SOC_INTEL_COMMON_RESET
 	select SOC_INTEL_MEM_MAPPED_PM_CONFIGURATION
 	select SSE2

src/soc/intel/jasperlake/Kconfig

@@ -57,7 +57,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_SMM_IO_TRAP
 	select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG
 	select SOC_INTEL_COMMON_FSP_RESET
-	select SOC_INTEL_COMMON_PCH_BASE
+	select SOC_INTEL_COMMON_PCH_CLIENT
 	select SOC_INTEL_COMMON_RESET
 	select SOC_INTEL_CSE_SET_EOP
 	select SOC_INTEL_MEM_MAPPED_PM_CONFIGURATION

src/soc/intel/meteorlake/Kconfig

@@ -77,7 +77,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG
 	select SOC_INTEL_COMMON_BASECODE
 	select SOC_INTEL_COMMON_FSP_RESET
-	select SOC_INTEL_COMMON_PCH_BASE
+	select SOC_INTEL_COMMON_PCH_CLIENT
 	select SOC_INTEL_COMMON_RESET
 	select SOC_INTEL_COMMON_BLOCK_IOC
 	select SOC_INTEL_CSE_SET_EOP

src/soc/intel/skylake/Kconfig

@@ -76,7 +76,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_UART
 	select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG
 	select SOC_INTEL_COMMON_FSP_RESET
-	select SOC_INTEL_COMMON_PCH_BASE
+	select SOC_INTEL_COMMON_PCH_CLIENT
 	select SOC_INTEL_COMMON_NHLT
 	select SOC_INTEL_COMMON_RESET
 	select SOC_INTEL_COMMON_BLOCK_POWER_LIMIT

src/soc/intel/tigerlake/Kconfig

@@ -76,7 +76,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_USB4_XHCI
 	select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG
 	select SOC_INTEL_COMMON_FSP_RESET
-	select SOC_INTEL_COMMON_PCH_BASE
+	select SOC_INTEL_COMMON_PCH_CLIENT
 	select SOC_INTEL_COMMON_RESET
 	select SOC_INTEL_COMMON_BLOCK_POWER_LIMIT
 	select SOC_INTEL_CSE_SET_EOP

src/soc/intel/xeon_sp/Kconfig

@@ -53,7 +53,6 @@ config	CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_PMC_DISCOVERABLE
 	select SOC_INTEL_COMMON_BLOCK_SMM
 	select SOC_INTEL_COMMON_BLOCK_ACPI
-	select SOC_INTEL_COMMON_PCH_BASE
 	select SOC_INTEL_COMMON_PCH_SERVER
 	select SUPPORT_CPU_UCODE_IN_CBFS
 	select TSC_MONOTONIC_TIMER