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 gic_data gic_data;
24 static struct pl011_data console_data;
25
26 register_phys_mem_pgdir(MEM_AREA_IO_NSEC, CONSOLE_UART_BASE,
27 CORE_MMU_PGDIR_SIZE);
28 register_phys_mem_pgdir(MEM_AREA_IO_SEC, GIC_BASE, CORE_MMU_PGDIR_SIZE);
29 register_phys_mem_pgdir(MEM_AREA_IO_SEC, THERMAL_SENSOR_BASE,
30 CORE_MMU_PGDIR_SIZE);
31
itr_core_handler(void)32 void itr_core_handler(void)
33 {
34 gic_it_handle(&gic_data);
35 }
36
console_init(void)37 void console_init(void)
38 {
39 pl011_init(&console_data, CONSOLE_UART_BASE, CONSOLE_UART_CLK_IN_HZ,
40 CONSOLE_BAUDRATE);
41 register_serial_console(&console_data.chip);
42 }
43
main_init_gic(void)44 void main_init_gic(void)
45 {
46 /* On ARMv8-A, GIC configuration is initialized in TF-A */
47 gic_init_base_addr(&gic_data, 0, GIC_BASE + GICD_OFFSET);
48
49 itr_init(&gic_data.chip);
50 }
51
timer_itr_cb(struct itr_handler * h __unused)52 static enum itr_return timer_itr_cb(struct itr_handler *h __unused)
53 {
54 /* Reset timer for next FIQ */
55 generic_timer_handler(TIMER_PERIOD_MS);
56
57 /* Collect entropy on each timer FIQ */
58 rng_collect_entropy();
59
60 return ITRR_HANDLED;
61 }
62
63 static struct itr_handler timer_itr = {
64 .it = IT_SEC_TIMER,
65 .flags = ITRF_TRIGGER_LEVEL,
66 .handler = timer_itr_cb,
67 };
68
init_timer_itr(void)69 static TEE_Result init_timer_itr(void)
70 {
71 itr_add(&timer_itr);
72 itr_enable(IT_SEC_TIMER);
73
74 /* Enable timer FIQ to fetch entropy required during boot */
75 generic_timer_start(TIMER_PERIOD_MS);
76
77 return TEE_SUCCESS;
78 }
79 driver_init(init_timer_itr);
80