util/intelp2m: Add support for Cannonlake-LP SoCs

Add support for Cannonlake-LP SoCs (Whiskeylake-U,
Coffeelake-U, Cometlake-U) as a separate parsing profile,
copying the existing 'Sunrise' profile and adjusting for differences
in reset mapping and GPIO macro generation

Test: convert inteltool GPIO log dump into coreboot macros for
an out-of-tree CML-U board.

Change-Id: I86296697ee892af7aa0818fb608b6d68fad2f307
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44457
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com>

2 files changed, 248 insertions, 0 deletions

diff --git a/util/intelp2m/platforms/cnl/macro.go b/util/intelp2m/platforms/cnl/macro.go
new file mode 100644
index 0000000000..c3bdfc88b1
--- /dev/null
+++ b/util/intelp2m/platforms/cnl/macro.go
@@ -0,0 +1,215 @@
+package cnl
+
+import "strings"
+import "fmt"
+
+// Local packages
+import "../common"
+import "../../config"
+import "../../fields"
+import "../snr"
+
+const (
+	PAD_CFG_DW0_RO_FIELDS = (0x1 << 27) | (0x1 << 24) | (0x3 << 21) | (0xf << 16) | 0xfc
+	PAD_CFG_DW1_RO_FIELDS = 0xfdffc3ff
+)
+
+const (
+	PAD_CFG_DW0 = common.PAD_CFG_DW0
+	PAD_CFG_DW1 = common.PAD_CFG_DW1
+	MAX_DW_NUM  = common.MAX_DW_NUM
+)
+
+type InheritanceMacro interface {
+	GpoMacroAdd()
+	NativeFunctionMacroAdd()
+	NoConnMacroAdd()
+}
+
+type PlatformSpecific struct {
+	InheritanceMacro
+	InheritanceTemplate
+}
+
+// RemmapRstSrc - remmap Pad Reset Source Config
+func (PlatformSpecific) RemmapRstSrc() {
+	macro := common.GetMacro()
+	if config.TemplateGet() != config.TempInteltool {
+		// Use reset source remapping only if the input file is inteltool.log dump
+		return
+	}
+	if strings.Contains(macro.PadIdGet(), "GPP_A") ||
+			strings.Contains(macro.PadIdGet(), "GPP_B") ||
+			strings.Contains(macro.PadIdGet(), "GPP_G") {
+		// See reset map for the Cannonlake Groups the Community 0:
+		// https://github.com/coreboot/coreboot/blob/master/src/soc/intel/cannonlake/gpio.c#L14
+		// remmap is not required because it is the same as common.
+		return
+	}
+
+	dw0 := macro.Register(PAD_CFG_DW0)
+	var remapping = map[uint8]uint32{
+		0: common.RST_RSMRST << common.PadRstCfgShift,
+		1: common.RST_DEEP   << common.PadRstCfgShift,
+		2: common.RST_PLTRST << common.PadRstCfgShift,
+	}
+	resetsrc, valid := remapping[dw0.GetResetConfig()]
+	if valid {
+		// dw0.SetResetConfig(resetsrc)
+		ResetConfigFieldVal := (dw0.ValueGet() & 0x3fffffff) | remapping[dw0.GetResetConfig()]
+		dw0.ValueSet(ResetConfigFieldVal)
+	} else {
+		fmt.Println("Invalid Pad Reset Config [ 0x", resetsrc ," ] for ", macro.PadIdGet())
+	}
+	dw0.CntrMaskFieldsClear(common.PadRstCfgMask)
+}
+
+// Adds The Pad Termination (TERM) parameter from PAD_CFG_DW1 to the macro
+// as a new argument
+func (PlatformSpecific) Pull() {
+	macro := common.GetMacro()
+	dw1 := macro.Register(PAD_CFG_DW1)
+	var pull = map[uint8]string{
+		0x0: "NONE",
+		0x2: "DN_5K",
+		0x4: "DN_20K",
+		0x9: "UP_1K",
+		0xa: "UP_5K",
+		0xb: "UP_2K",
+		0xc: "UP_20K",
+		0xd: "UP_667",
+		0xf: "NATIVE",
+	}
+	str, valid := pull[dw1.GetTermination()]
+	if !valid {
+		str = "INVALID"
+		fmt.Println("Error",
+				macro.PadIdGet(),
+				" invalid TERM value = ",
+				int(dw1.GetTermination()))
+	}
+	macro.Separator().Add(str)
+}
+
+// Generate macro to cause peripheral IRQ when configured in GPIO input mode
+func ioApicRoute() bool {
+	macro := common.GetMacro()
+	dw0 := macro.Register(PAD_CFG_DW0)
+	if dw0.GetGPIOInputRouteIOxAPIC() == 0 {
+		return false
+	}
+
+	macro.Add("_APIC")
+	// PAD_CFG_GPI_APIC(pad, pull, rst, trig, inv)
+	macro.Add("(").Id().Pull().Rstsrc().Trig().Invert().Add("),")
+	return true
+}
+
+// Generate macro to cause NMI when configured in GPIO input mode
+func nmiRoute() bool {
+	macro := common.GetMacro()
+	if macro.Register(PAD_CFG_DW0).GetGPIOInputRouteNMI() == 0 {
+		return false
+	}
+	// PAD_CFG_GPI_NMI(GPIO_24, UP_20K, DEEP, LEVEL, INVERT),
+	macro.Add("_NMI").Add("(").Id().Pull().Rstsrc().Trig().Invert().Add("),")
+	return true
+}
+
+// Generate macro to cause SCI when configured in GPIO input mode
+func sciRoute() bool {
+	macro := common.GetMacro()
+	dw0 := macro.Register(PAD_CFG_DW0)
+	if dw0.GetGPIOInputRouteSCI() == 0 {
+		return false
+	}
+	// PAD_CFG_GPI_SCI(pad, pull, rst, trig, inv)
+	macro.Add("_SCI").Add("(").Id().Pull().Rstsrc().Trig().Invert().Add("),")
+	return true
+}
+
+// Generate macro to cause SMI when configured in GPIO input mode
+func smiRoute() bool {
+	macro := common.GetMacro()
+	dw0 := macro.Register(PAD_CFG_DW0)
+	if dw0.GetGPIOInputRouteSMI() == 0 {
+		return false
+	}
+	// PAD_CFG_GPI_SMI(pad, pull, rst, trig, inv)
+	macro.Add("_SMI").Add("(").Id().Pull().Rstsrc().Trig().Invert().Add("),")
+	return true
+}
+
+// Adds PAD_CFG_GPI macro with arguments
+func (PlatformSpecific) GpiMacroAdd() {
+	macro := common.GetMacro()
+	var ids []string
+	macro.Set("PAD_CFG_GPI")
+	for routeid, isRoute := range map[string]func() (bool) {
+		"IOAPIC": ioApicRoute,
+		"SCI":    sciRoute,
+		"SMI":    smiRoute,
+		"NMI":    nmiRoute,
+	} {
+		if isRoute() {
+			ids = append(ids, routeid)
+		}
+	}
+
+	switch argc := len(ids); argc {
+	case 0:
+		// e.g. PAD_CFG_GPI_TRIG_OWN(pad, pull, rst, trig, own)
+		macro.Add("_TRIG_OWN").Add("(").Id().Pull().Rstsrc().Trig().Own().Add("),")
+	case 1:
+		// GPI with IRQ route
+		if config.AreFieldsIgnored() {
+			// Set Host Software Ownership to ACPI mode
+			macro.SetPadOwnership(common.PAD_OWN_ACPI)
+		}
+
+	case 2:
+		// PAD_CFG_GPI_DUAL_ROUTE(pad, pull, rst, trig, inv, route1, route2)
+		macro.Set("PAD_CFG_GPI_DUAL_ROUTE(").Id().Pull().Rstsrc().Trig().Invert()
+		macro.Add(", " + ids[0] + ", " + ids[1] + "),")
+		if config.AreFieldsIgnored() {
+			// Set Host Software Ownership to ACPI mode
+			macro.SetPadOwnership(common.PAD_OWN_ACPI)
+		}
+	default:
+		// Clear the control mask so that the check fails and "Advanced" macro is
+		// generated
+		macro.Register(PAD_CFG_DW0).CntrMaskFieldsClear(common.AllFields)
+	}
+}
+
+// Adds PAD_CFG_GPO macro with arguments
+func (platform PlatformSpecific) GpoMacroAdd() {
+	platform.InheritanceMacro.GpoMacroAdd()
+}
+
+// Adds PAD_CFG_NF macro with arguments
+func (platform PlatformSpecific) NativeFunctionMacroAdd() {
+	platform.InheritanceMacro.NativeFunctionMacroAdd()
+}
+
+// Adds PAD_NC macro
+func (platform PlatformSpecific) NoConnMacroAdd() {
+	platform.InheritanceMacro.NoConnMacroAdd()
+}
+
+// GenMacro - generate pad macro
+// dw0 : DW0 config register value
+// dw1 : DW1 config register value
+// return: string of macro
+//         error
+func (PlatformSpecific) GenMacro(id string, dw0 uint32, dw1 uint32, ownership uint8) string {
+	macro := common.GetInstanceMacro(PlatformSpecific{InheritanceMacro : snr.PlatformSpecific{}},
+		fields.InterfaceGet())
+	macro.Clear()
+	macro.Register(PAD_CFG_DW0).CntrMaskFieldsClear(common.AllFields)
+	macro.Register(PAD_CFG_DW0).CntrMaskFieldsClear(common.AllFields)
+	macro.PadIdSet(id).SetPadOwnership(ownership)
+	macro.Register(PAD_CFG_DW0).ValueSet(dw0).ReadOnlyFieldsSet(PAD_CFG_DW0_RO_FIELDS)
+	macro.Register(PAD_CFG_DW1).ValueSet(dw1).ReadOnlyFieldsSet(PAD_CFG_DW1_RO_FIELDS)
+	return macro.Generate()
+}
diff --git a/util/intelp2m/platforms/cnl/template.go b/util/intelp2m/platforms/cnl/template.go
new file mode 100644
index 0000000000..f1a17413bc
--- /dev/null
+++ b/util/intelp2m/platforms/cnl/template.go
@@ -0,0 +1,33 @@
+package cnl
+
+import "strings"
+
+type InheritanceTemplate interface {
+
+	KeywordCheck(line string) bool
+}
+
+// GroupNameExtract - This function extracts the group ID, if it exists in a row
+// line      : string from the configuration file
+// return
+//     bool   : true if the string contains a group identifier
+//     string : group identifier
+func (PlatformSpecific) GroupNameExtract(line string) (bool, string) {
+	for _, groupKeyword := range []string{
+		"GPP_A", "GPP_B", "GPP_G",
+		"GPP_D", "GPP_F", "GPP_H",
+		"GPD",   "GPP_C", "GPP_E",
+	} {
+		if strings.Contains(line, groupKeyword) {
+			return true, groupKeyword
+		}
+	}
+	return false, ""
+}
+
+// KeywordCheck - This function is used to filter parsed lines of the configuration file and
+//                returns true if the keyword is contained in the line.
+// line      : string from the configuration file
+func (platform PlatformSpecific) KeywordCheck(line string) bool {
+	return platform.InheritanceTemplate.KeywordCheck(line)
+}