/* 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, }, }; `) }