219 lines
4.7 KiB
C
219 lines
4.7 KiB
C
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/*
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* Copyright (C) 2009-2015 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#include <debug.h>
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#include <drivers/display.h>
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#include <drivers/hdmi.h>
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#include <drivers/flash_nor.h>
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#include <drivers/iic.h>
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#include <drivers/power.h>
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#include <drivers/mcu.h>
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#include <lib/devicetree.h>
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#include <lib/env.h>
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#include <lib/mib.h>
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#include <lib/syscfg.h>
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#include <platform.h>
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#include <platform/gpio.h>
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#include <platform/gpiodef.h>
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#include <platform/memmap.h>
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#include <sys.h>
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#include <sys/boot.h>
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#include <sys/menu.h>
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#include <sys/task.h>
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#include <target.h>
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#include <target/powerconfig.h>
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static u_int32_t j33i_get_board_rev(void);
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MIB_CONSTANT(kMIBTargetOsPictureScale, kOIDTypeUInt32, 1);
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MIB_CONSTANT(kMIBTargetPictureRotate, kOIDTypeInt32, 0);
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static uint32_t display_config;
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void target_early_init(void)
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{
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// <rdar://problem/12315444> J33i: HDMI DDC - change tSU;STA interval (iOS & iBoot).
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iic_set_filter(2, 0x4A334009);
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//<rdar://problem/12711386> J33i: iBoot DDC speed should be ~50 kHz
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iic_set_frequency(2, 50000);
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}
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void target_late_init(void)
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{
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#if WITH_HW_MCU
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// Late display initialization. Needed to wait for MCU.
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mcu_init();
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#endif
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#if WITH_HW_DISPLAY_HDMI
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// Backgrounded. See hdmi_device_wait_started() call below.
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hdmi_init();
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#endif
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}
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void target_init(void)
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{
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#if WITH_HW_FLASH_NOR
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flash_nor_init(SPI_NOR0);
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#endif
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}
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void target_quiesce_hardware(void)
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{
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#if WITH_HW_MCU
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// radar 9746416 -- UART4 left in interrupt mode will cause kernel panic
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mcu_quiesce_uart();
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#endif
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}
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void target_poweroff(void)
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{
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}
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int target_debug_init(void)
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{
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#if WITH_HW_MCU
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mcu_start_recover();
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#endif
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return 0;
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}
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int target_bootprep(enum boot_target target)
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{
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switch (target) {
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case BOOT_DARWIN:
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case BOOT_DIAGS:
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#if WITH_HW_MCU
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#if WITH_HW_DISPLAY_HDMI && PRODUCT_IBOOT
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/* Potentially delay boot so we have a
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* logo. We might have to do this if a
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* connected TV is particularly slow at
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* responding to EDID. Sorry. */
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hdmi_device_wait_started();
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#endif
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mcu_start_boot();
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#endif
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break;
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case BOOT_DARWIN_RESTORE:
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break;
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default:
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// do nothing
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break;
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}
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return 0;
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}
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bool target_should_recover(void)
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{
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// trigger recovery mode whenever USB is attached, unless
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// environment variable says otherwise.
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return power_has_usb() && !env_get_bool("auto-boot-usb", true);
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}
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bool target_should_poweron(bool *cold_button_boot)
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{
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// always powers on
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return true;
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}
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bool target_should_poweroff(bool at_boot)
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{
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// never power off
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return false;
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}
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#if APPLICATION_IBOOT
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void target_watchdog_tickle(void)
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{
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// u_int32_t value = gpio_read(GPIO_WDOG_TICKLE);
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// gpio_write(GPIO_WDOG_TICKLE, value ^ 1);
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}
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#endif // APPLICATION_IBOOT
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void * target_get_display_configuration(void)
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{
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display_config = 0x00000000;
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return ((void *)&display_config);
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}
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#if WITH_ENV
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void target_setup_default_environment(void)
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{
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env_set("boot-device", "nand0", 0);
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env_set("display-color-space","RGB888", 0);
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env_set("display-timing", "720p-hdmi", 0);
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env_set("idle-off", "false", 0); // do not idle off; there is no battery and this will just reboot (8035422)
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}
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#endif
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#if WITH_DEVICETREE
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int target_update_device_tree(void)
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{
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DTNode *node;
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uint32_t propSize;
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char *propName;
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void *propData;
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// Update the pmu node with the actual vcore values
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if (FindNode(0, "arm-io/i2c0/pmu", &node)) {
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propName = "swi-vcores";
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if (FindProperty(node, &propName, &propData, &propSize)) {
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platform_get_soc_voltages(propSize / sizeof(u_int32_t), propData);
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}
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}
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if (FindNode(0, "arm-io/mcu0", &node)) {
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propName = "board-rev";
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if (FindProperty(node, &propName, &propData, &propSize))
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((u_int32_t *)propData)[0] = j33i_get_board_rev();
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}
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return 0;
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}
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#endif
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static u_int32_t j33i_get_board_rev(void)
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{
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u_int32_t gpio_board_rev;
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gpio_configure(GPIO_BOARD_REV0, GPIO_CFG_IN);
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gpio_configure(GPIO_BOARD_REV1, GPIO_CFG_IN);
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gpio_configure(GPIO_BOARD_REV2, GPIO_CFG_IN);
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gpio_configure(GPIO_BOARD_REV3, GPIO_CFG_IN);
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gpio_configure_pupdn(GPIO_BOARD_REV0, GPIO_PDN);
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gpio_configure_pupdn(GPIO_BOARD_REV1, GPIO_PDN);
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gpio_configure_pupdn(GPIO_BOARD_REV2, GPIO_PDN);
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gpio_configure_pupdn(GPIO_BOARD_REV3, GPIO_PDN);
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spin(100); // Wait 100us
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gpio_board_rev =
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(gpio_read(GPIO_BOARD_REV3) << 3) |
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(gpio_read(GPIO_BOARD_REV2) << 2) |
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(gpio_read(GPIO_BOARD_REV1) << 1) |
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(gpio_read(GPIO_BOARD_REV0) << 0);
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gpio_configure(GPIO_BOARD_REV0, GPIO_CFG_DFLT);
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gpio_configure(GPIO_BOARD_REV1, GPIO_CFG_DFLT);
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gpio_configure(GPIO_BOARD_REV2, GPIO_CFG_DFLT);
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gpio_configure(GPIO_BOARD_REV3, GPIO_CFG_DFLT);
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return (gpio_board_rev &0xF);
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}
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