mirror of
https://github.com/Atmosphere-NX/Atmosphere
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105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/*
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* Copyright (c) 2018 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "utils.h"
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#include "mmu.h"
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#include "memory_map.h"
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#include "cpu_context.h"
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#include "bootconfig.h"
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#include "configitem.h"
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#include "masterkey.h"
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#include "bootup.h"
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#include "smc_api.h"
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#include "exocfg.h"
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#include "se.h"
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#include "mc.h"
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#include "car.h"
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#include "i2c.h"
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#include "misc.h"
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#include "uart.h"
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#include "interrupt.h"
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#include "pmc.h"
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uintptr_t get_warmboot_main_stack_address(void) {
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return TZRAM_GET_SEGMENT_ADDRESS(TZRAM_SEGEMENT_ID_SECMON_EVT) + 0x780;
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}
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void __attribute__((noreturn)) warmboot_main(void) {
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/*
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This function and its callers are reached in either of the following events, under normal conditions:
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- warmboot (core 3)
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- cpu_on
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*/
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if (is_core_active(get_core_id())) {
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panic(0xF7F00009); /* invalid CPU context */
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}
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/* IRAM C+D identity mapping has actually been removed on coldboot but we don't really care */
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/* For our crt0 to work, this doesn't actually unmap TZRAM */
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identity_unmap_iram_cd_tzram();
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/* On warmboot (not cpu_on) only */
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if (VIRT_MC_SECURITY_CFG3 == 0) {
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/* N only does this on dev units, but we will do it unconditionally. */
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{
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uart_select(UART_A);
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clkrst_reboot(CARDEVICE_UARTA);
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uart_init(UART_A, 115200);
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}
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if (!configitem_is_retail()) {
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uart_send(UART_A, "OHAYO", 6);
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uart_wait_idle(UART_A, UART_VENDOR_STATE_TX_IDLE);
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}
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/* Sanity check the Security Engine. */
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se_verify_flags_cleared();
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/* Initialize interrupts. */
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intr_initialize_gic_nonsecure();
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bootup_misc_mmio();
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/* Make PMC (2.x+), MC (4.x+) registers secure-only */
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secure_additional_devices();
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if (exosphere_get_target_firmware() < EXOSPHERE_TARGET_FIRMWARE_400 || configitem_get_hardware_type() == 0) {
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/* Enable input to I2C1 */
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PINMUX_AUX_GEN1_I2C_SCL_0 = 0x40;
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PINMUX_AUX_GEN1_I2C_SDA_0 = 0x40;
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clkrst_reboot(CARDEVICE_I2C1);
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i2c_init(0);
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i2c_clear_ti_charger_bit_7();
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clkrst_disable(CARDEVICE_I2C1);
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}
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clear_user_smc_in_progress();
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if (exosphere_get_target_firmware() >= EXOSPHERE_TARGET_FIRMWARE_400) {
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setup_4x_mmio();
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}
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}
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setup_current_core_state();
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/* Update SCR_EL3 depending on value in Bootconfig. */
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set_extabt_serror_taken_to_el3(bootconfig_take_extabt_serror_to_el3());
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core_jump_to_lower_el();
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}
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