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/* 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,
},
};
`)
}
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