From 8cba237086dfbb312a5913bb75eef4f6046aeae5 Mon Sep 17 00:00:00 2001
From: Nicholas Chin <nic.c3.14@gmail.com>
Date: Mon, 18 Mar 2024 10:45:05 -0600
Subject: util: Import autoport with Haswell patches

This is a copy of coreboot's autoport utility, with a patch applied to
support Haswell/Lynx Point platforms. That patch is currently in review
on coreboot's Gerrit.

https://review.coreboot.org/c/coreboot/+/30890

Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
---
 util/autoport/gpio_common.go | 113 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 util/autoport/gpio_common.go

(limited to 'util/autoport/gpio_common.go')

diff --git a/util/autoport/gpio_common.go b/util/autoport/gpio_common.go
new file mode 100644
index 00000000..a869dce4
--- /dev/null
+++ b/util/autoport/gpio_common.go
@@ -0,0 +1,113 @@
+/* code to generate common GPIO code for Intel 6/7/8 Series Chipset */
+
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func writeGPIOSet(ctx Context, sb *os.File,
+	val uint32, set uint, partno int, constraint uint32) {
+
+	max := uint(32)
+	if set == 3 {
+		max = 12
+	}
+
+	bits := [6][2]string{
+		{"GPIO_MODE_NATIVE", "GPIO_MODE_GPIO"},
+		{"GPIO_DIR_OUTPUT", "GPIO_DIR_INPUT"},
+		{"GPIO_LEVEL_LOW", "GPIO_LEVEL_HIGH"},
+		{"GPIO_RESET_PWROK", "GPIO_RESET_RSMRST"},
+		{"GPIO_NO_INVERT", "GPIO_INVERT"},
+		{"GPIO_NO_BLINK", "GPIO_BLINK"},
+	}
+
+	for i := uint(0); i < max; i++ {
+		if (constraint>>i)&1 == 1 {
+			fmt.Fprintf(sb, "	.gpio%d = %s,\n",
+				(set-1)*32+i,
+				bits[partno][(val>>i)&1])
+		}
+	}
+}
+
+func GPIO(ctx Context, inteltool InteltoolData) {
+	var constraint uint32
+	gpio := Create(ctx, "gpio.c")
+	defer gpio.Close()
+
+	AddBootBlockFile("gpio.c", "")
+	AddROMStageFile("gpio.c", "")
+
+	Add_gpl(gpio)
+	gpio.WriteString("#include <southbridge/intel/common/gpio.h>\n\n")
+
+	addresses := [3][6]int{
+		{0x00, 0x04, 0x0c, 0x60, 0x2c, 0x18},
+		{0x30, 0x34, 0x38, 0x64, -1, -1},
+		{0x40, 0x44, 0x48, 0x68, -1, -1},
+	}
+
+	for set := 1; set <= 3; set++ {
+		for partno, part := range []string{"mode", "direction", "level", "reset", "invert", "blink"} {
+			addr := addresses[set-1][partno]
+			if addr < 0 {
+				continue
+			}
+			fmt.Fprintf(gpio, "static const struct pch_gpio_set%d pch_gpio_set%d_%s = {\n",
+				set, set, part)
+
+			constraint = 0xffffffff
+			switch part {
+			case "direction":
+				/* Ignored on native mode */
+				constraint = inteltool.GPIO[uint16(addresses[set-1][0])]
+			case "level":
+				/* Level doesn't matter for input */
+				constraint = inteltool.GPIO[uint16(addresses[set-1][0])]
+				constraint &^= inteltool.GPIO[uint16(addresses[set-1][1])]
+			case "reset":
+				/* Only show reset */
+				constraint = inteltool.GPIO[uint16(addresses[set-1][3])]
+			case "invert":
+				/* Only on input and only show inverted GPIO */
+				constraint = inteltool.GPIO[uint16(addresses[set-1][0])]
+				constraint &= inteltool.GPIO[uint16(addresses[set-1][1])]
+				constraint &= inteltool.GPIO[uint16(addresses[set-1][4])]
+			case "blink":
+				/* Only on output and only show blinking GPIO */
+				constraint = inteltool.GPIO[uint16(addresses[set-1][0])]
+				constraint &^= inteltool.GPIO[uint16(addresses[set-1][1])]
+				constraint &= inteltool.GPIO[uint16(addresses[set-1][5])]
+			}
+			writeGPIOSet(ctx, gpio, inteltool.GPIO[uint16(addr)], uint(set), partno, constraint)
+			gpio.WriteString("};\n\n")
+		}
+	}
+
+	gpio.WriteString(`const struct pch_gpio_map mainboard_gpio_map = {
+	.set1 = {
+		.mode		= &pch_gpio_set1_mode,
+		.direction	= &pch_gpio_set1_direction,
+		.level		= &pch_gpio_set1_level,
+		.blink		= &pch_gpio_set1_blink,
+		.invert		= &pch_gpio_set1_invert,
+		.reset		= &pch_gpio_set1_reset,
+	},
+	.set2 = {
+		.mode		= &pch_gpio_set2_mode,
+		.direction	= &pch_gpio_set2_direction,
+		.level		= &pch_gpio_set2_level,
+		.reset		= &pch_gpio_set2_reset,
+	},
+	.set3 = {
+		.mode		= &pch_gpio_set3_mode,
+		.direction	= &pch_gpio_set3_direction,
+		.level		= &pch_gpio_set3_level,
+		.reset		= &pch_gpio_set3_reset,
+	},
+};
+`)
+}
-- 
cgit v1.2.1