1 /*
2 * Copyright (c) 2021-2022, Arm Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8
9 #include <common/bl_common.h>
10
11 #include <drivers/generic_delay_timer.h>
12 #include <drivers/io/io_storage.h>
13 #include <plat/common/platform.h>
14 #include <plat/arm/common/arm_fconf_getter.h>
15 #include <plat/arm/common/arm_fconf_io_storage.h>
16 #include <plat/arm/common/plat_arm.h>
17 #include <platform_def.h>
18
19 /*
20 * Table of regions to map using the MMU.
21 * Replace or extend the below regions as required
22 */
23
24 const mmap_region_t plat_arm_mmap[] = {
25 ARM_MAP_SHARED_RAM,
26 ARM_MAP_NS_SHARED_RAM,
27 ARM_MAP_NS_DRAM1,
28 CORSTONE1000_MAP_DEVICE,
29 CORSTONE1000_EXTERNAL_FLASH,
30 {0}
31 };
32
set_fip_image_source(void)33 static void set_fip_image_source(void)
34 {
35 const struct plat_io_policy *policy;
36 /*
37 * metadata for firmware update is written at 0x0000 offset of the flash.
38 * PLAT_ARM_BOOT_BANK_FLAG contains the boot bank that TF-M is booted.
39 * As per firmware update spec, at a given point of time, only one bank
40 * is active. This means, TF-A should boot from the same bank as TF-M.
41 */
42 volatile uint32_t *boot_bank_flag = (uint32_t *)(PLAT_ARM_BOOT_BANK_FLAG);
43
44 if (*boot_bank_flag > 1) {
45 VERBOSE("Boot_bank is set higher than possible values");
46 }
47
48 VERBOSE("Boot bank flag = %u.\n\r", *boot_bank_flag);
49
50 policy = FCONF_GET_PROPERTY(arm, io_policies, FIP_IMAGE_ID);
51
52 assert(policy != NULL);
53 assert(policy->image_spec != 0UL);
54
55 io_block_spec_t *spec = (io_block_spec_t *)policy->image_spec;
56
57 if ((*boot_bank_flag) == 0) {
58 VERBOSE("Booting from bank 0: fip offset = 0x%lx\n\r",
59 PLAT_ARM_FIP_BASE_BANK0);
60 spec->offset = PLAT_ARM_FIP_BASE_BANK0;
61 } else {
62 VERBOSE("Booting from bank 1: fip offset = 0x%lx\n\r",
63 PLAT_ARM_FIP_BASE_BANK1);
64 spec->offset = PLAT_ARM_FIP_BASE_BANK1;
65 }
66 }
67
bl2_platform_setup(void)68 void bl2_platform_setup(void)
69 {
70 arm_bl2_platform_setup();
71 /*
72 * Identify the start address of the FIP by reading the boot
73 * index flag from the flash.
74 */
75 set_fip_image_source();
76 }
77
78 /* corstone1000 only has one always-on power domain and there
79 * is no power control present
80 */
plat_arm_pwrc_setup(void)81 void __init plat_arm_pwrc_setup(void)
82 {
83 }
84
plat_get_syscnt_freq2(void)85 unsigned int plat_get_syscnt_freq2(void)
86 {
87 /* Returning the Generic Timer Frequency */
88 return SYS_COUNTER_FREQ_IN_TICKS;
89 }
90
91
92 /*
93 * Helper function to initialize ARM interconnect driver.
94 */
plat_arm_interconnect_init(void)95 void plat_arm_interconnect_init(void)
96 {
97 }
98
99 /*
100 * Helper function to place current master into coherency
101 */
plat_arm_interconnect_enter_coherency(void)102 void plat_arm_interconnect_enter_coherency(void)
103 {
104 }
105
106 /*
107 * Helper function to remove current master from coherency
108 */
plat_arm_interconnect_exit_coherency(void)109 void plat_arm_interconnect_exit_coherency(void)
110 {
111 }
112
113 /*
114 * This function is invoked during Mbed TLS library initialisation to get a heap
115 * The function simply returns the default allocated heap.
116 */
117
118 #if TRUSTED_BOARD_BOOT
plat_get_mbedtls_heap(void ** heap_addr,size_t * heap_size)119 int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size)
120 {
121 assert(heap_addr != NULL);
122 assert(heap_size != NULL);
123
124 return arm_get_mbedtls_heap(heap_addr, heap_size);
125 }
126 #endif
127