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|
package main
import (
"fmt"
"os"
"strings"
)
const (
PIRQI = 0
PIRQJ = 1
PIRQK = 2
PIRQL = 3
PIRQM = 4
PIRQN = 5
PIRQO = 6
PIRQP = 7
PIRQQ = 8
PIRQR = 9
PIRQS = 10
PIRQT = 11
PIRQU = 12
PIRQV = 13
PIRQW = 14
PIRQX = 15
)
/* from sb/intel/lynxpoint/lp_gpio.c */
func lp_gpio_to_pirq(gpioNum uint16) int {
switch gpioNum {
case 8:
return PIRQI
case 9:
return PIRQJ
case 10:
return PIRQK
case 13:
return PIRQL
case 14:
return PIRQM
case 45:
return PIRQN
case 46:
return PIRQO
case 47:
return PIRQP
case 48:
return PIRQQ
case 49:
return PIRQR
case 50:
return PIRQS
case 51:
return PIRQT
case 52:
return PIRQU
case 53:
return PIRQV
case 54:
return PIRQW
case 55:
return PIRQX
default:
return -1
}
}
func conf0str(conf0 uint32) string {
if (conf0 & 1) == 0 {
return "GPIO_MODE_NATIVE"
} else {
s := []string{"GPIO_MODE_GPIO"}
var gpio_output bool
if ((conf0 >> 2) & 1) == 1 {
s = append(s, "GPIO_DIR_INPUT")
gpio_output = false
} else {
s = append(s, "GPIO_DIR_OUTPUT")
gpio_output = true
}
if ((conf0 >> 3) & 1) == 1 {
s = append(s, "GPIO_INVERT")
}
if ((conf0 >> 4) & 1) == 1 {
s = append(s, "GPIO_IRQ_LEVEL")
}
if gpio_output {
if ((conf0 >> 31) & 1) == 1 {
s = append(s, "GPO_LEVEL_HIGH")
} else {
s = append(s, "GPO_LEVEL_LOW")
}
}
return strings.Join(s, " | ")
}
}
func lpgpio_preset(conf0 uint32, owner uint32, route uint32, irqen uint32, pirq uint32) string {
if conf0 == 0xd { /* 0b1101: MODE_GPIO | INPUT | INVERT */
if owner == 0 { /* OWNER_ACPI */
if irqen == 0 && pirq == 0 {
if route == 0 { /* SCI */
return "GPIO_ACPI_SCI"
} else {
return "GPIO_ACPI_SMI"
}
}
return ""
} else { /* OWNER_GPIO */
if route == 0 && irqen == 0 && pirq != 0 {
return "GPIO_INPUT_INVERT"
}
return ""
}
}
if conf0 == 0x5 && owner == 1 { /* 0b101: MODE_GPIO | INPUT, OWNER_GPIO */
if route == 0 && irqen == 0 {
if pirq == 1 {
return "GPIO_PIRQ"
} else {
return "GPIO_INPUT"
}
}
return ""
}
if owner == 1 && irqen == 1 {
if route == 0 && pirq == 0 {
if conf0 == 0x5 { /* 0b00101 */
return "GPIO_IRQ_EDGE"
}
if conf0 == 0x15 { /* 0b10101 */
return "GPIO_IRQ_LEVEL"
}
}
return ""
}
return ""
}
func gpio_str(conf0 uint32, conf1 uint32, owner uint32, route uint32, irqen uint32, reset uint32, blink uint32, pirq uint32) string {
s := []string{}
s = append(s, fmt.Sprintf(".conf0 = %s", conf0str(conf0)))
if conf1 != 0 {
s = append(s, fmt.Sprintf(".conf1 = 0x%x", conf1))
}
if owner != 0 {
s = append(s, ".owner = GPIO_OWNER_GPIO")
}
if route != 0 {
s = append(s, ".route = GPIO_ROUTE_SMI")
}
if irqen != 0 {
s = append(s, ".irqen = GPIO_IRQ_ENABLE")
}
if reset != 0 {
s = append(s, ".reset = GPIO_RESET_RSMRST")
}
if blink != 0 {
s = append(s, ".blink = GPO_BLINK")
}
if pirq != 0 {
s = append(s, ".pirq = GPIO_PIRQ_APIC_ROUTE")
}
return strings.Join(s, ", ")
}
/* start addresses of GPIO registers */
const (
GPIO_OWN = 0x0
GPIPIRQ2IOXAPIC = 0x10
GPO_BLINK = 0x18
GPI_ROUT = 0x30
GP_RST_SEL = 0x60
GPI_IE = 0x90
GPnCONFIGA = 0x100
GPnCONFIGB = 0x104
)
func PrintLPGPIO(gpio *os.File, inteltool InteltoolData) {
for gpioNum := uint16(0); gpioNum <= 94; gpioNum++ {
if gpioNum < 10 {
fmt.Fprintf(gpio, "\t[%d] = ", gpioNum)
} else {
fmt.Fprintf(gpio, "\t[%d] = ", gpioNum)
}
conf0 := inteltool.GPIO[GPnCONFIGA+gpioNum*8]
conf1 := inteltool.GPIO[GPnCONFIGB+gpioNum*8]
set := gpioNum / 32
bit := gpioNum % 32
/* owner only effective in GPIO mode */
owner := (inteltool.GPIO[GPIO_OWN+set*4] >> bit) & 1
route := (inteltool.GPIO[GPI_ROUT+set*4] >> bit) & 1
irqen := (inteltool.GPIO[GPI_IE+set*4] >> bit) & 1
reset := (inteltool.GPIO[GP_RST_SEL+set*4] >> bit) & 1
var blink, pirq uint32
/* blink only effective in GPIO output mode */
if set == 0 {
blink = (inteltool.GPIO[GPO_BLINK] >> bit) & 1
} else {
blink = 0
}
irqset := lp_gpio_to_pirq(gpioNum)
if irqset >= 0 {
pirq = (inteltool.GPIO[GPIPIRQ2IOXAPIC] >> uint(irqset)) & 1
} else {
pirq = 0
}
if (conf0 & 1) == 0 {
fmt.Fprintf(gpio, "LP_GPIO_NATIVE,\n")
} else if (conf0 & 4) == 0 {
/* configured as output */
if ((conf0 >> 31) & 1) == 0 {
fmt.Fprintf(gpio, "LP_GPIO_OUT_LOW,\n")
} else {
fmt.Fprintf(gpio, "LP_GPIO_OUT_HIGH,\n")
}
} else if (conf1 & 4) != 0 {
/* configured as input and sensing disabled */
fmt.Fprintf(gpio, "LP_GPIO_UNUSED,\n")
} else {
is_preset := false
if conf1 == 0 && reset == 0 && blink == 0 {
preset := lpgpio_preset(conf0, owner, route, irqen, pirq)
if preset != "" {
fmt.Fprintf(gpio, "LP_%s,\n", preset)
is_preset = true
}
}
if !is_preset {
fmt.Fprintf(gpio, "{ %s },\n", gpio_str(conf0, conf1, owner, route, irqen, reset, blink, pirq))
}
}
}
}
func Lynxpoint_LP_GPIO(ctx Context, inteltool InteltoolData) {
gpio := Create(ctx, "gpio.c")
defer gpio.Close()
AddROMStageFile("gpio.c", "")
Add_gpl(gpio)
gpio.WriteString(`#include <southbridge/intel/lynxpoint/lp_gpio.h>
const struct pch_lp_gpio_map mainboard_lp_gpio_map[] = {
`)
PrintLPGPIO(gpio, inteltool)
gpio.WriteString("\tLP_GPIO_END\n};\n")
}
|
