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path: root/util/autoport/gpio_common.go
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Diffstat (limited to 'util/autoport/gpio_common.go')
-rw-r--r--util/autoport/gpio_common.go113
1 files changed, 113 insertions, 0 deletions
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,
+ },
+};
+`)
+}