1 // SPDX-License-Identifier: BSD-2-Clause
2 /*
3 * Copyright (c) 2018, Linaro Limited
4 */
5
6 #include <arm.h>
7 #include <console.h>
8 #include <drivers/gic.h>
9 #include <drivers/pl011.h>
10 #include <io.h>
11 #include <kernel/boot.h>
12 #include <kernel/interrupt.h>
13 #include <kernel/misc.h>
14 #include <kernel/panic.h>
15 #include <kernel/thread.h>
16 #include <kernel/timer.h>
17 #include <mm/core_memprot.h>
18 #include <platform_config.h>
19 #include <sm/optee_smc.h>
20
21 #include "synquacer_rng_pta.h"
22
23 static struct pl011_data console_data;
24
25 register_phys_mem_pgdir(MEM_AREA_IO_NSEC, CONSOLE_UART_BASE,
26 CORE_MMU_PGDIR_SIZE);
27 register_phys_mem_pgdir(MEM_AREA_IO_SEC, GIC_BASE, CORE_MMU_PGDIR_SIZE);
28 register_phys_mem_pgdir(MEM_AREA_IO_SEC, THERMAL_SENSOR_BASE,
29 CORE_MMU_PGDIR_SIZE);
30
plat_console_init(void)31 void plat_console_init(void)
32 {
33 pl011_init(&console_data, CONSOLE_UART_BASE, CONSOLE_UART_CLK_IN_HZ,
34 CONSOLE_BAUDRATE);
35 register_serial_console(&console_data.chip);
36 }
37
boot_primary_init_intc(void)38 void boot_primary_init_intc(void)
39 {
40 gic_init(0, GIC_BASE + GICD_OFFSET);
41 }
42
timer_itr_cb(struct itr_handler * h __unused)43 static enum itr_return timer_itr_cb(struct itr_handler *h __unused)
44 {
45 /* Reset timer for next FIQ */
46 generic_timer_handler(TIMER_PERIOD_MS);
47
48 /* Collect entropy on each timer FIQ */
49 rng_collect_entropy();
50
51 return ITRR_HANDLED;
52 }
53
54 static struct itr_handler timer_itr = {
55 .it = IT_SEC_TIMER,
56 .flags = ITRF_TRIGGER_LEVEL,
57 .handler = timer_itr_cb,
58 };
59
init_timer_itr(void)60 static TEE_Result init_timer_itr(void)
61 {
62 if (interrupt_add_handler_with_chip(interrupt_get_main_chip(),
63 &timer_itr))
64 panic();
65
66 interrupt_enable(timer_itr.chip, timer_itr.it);
67
68 /* Enable timer FIQ to fetch entropy required during boot */
69 generic_timer_start(TIMER_PERIOD_MS);
70
71 return TEE_SUCCESS;
72 }
73 driver_init(init_timer_itr);
74