1 /*
2 * Copyright (c) 2015-2025, Arm Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8
9 #include <platform_def.h>
10
11 #include <bl32/tsp/platform_tsp.h>
12 #include <common/bl_common.h>
13 #include <common/debug.h>
14 #include <drivers/arm/pl011.h>
15 #include <drivers/console.h>
16 #if TRANSFER_LIST && MEASURED_BOOT
17 #include <event_measure.h>
18 #include <event_print.h>
19 #endif
20 #include <plat/arm/common/plat_arm.h>
21 #include <plat/common/platform.h>
22
23 /* Weak definitions may be overridden in specific ARM standard platform */
24 #pragma weak tsp_early_platform_setup
25 #pragma weak tsp_platform_setup
26 #pragma weak tsp_plat_arch_setup
27
28 #define MAP_BL_TSP_TOTAL MAP_REGION_FLAT( \
29 BL32_BASE, \
30 BL32_END - BL32_BASE, \
31 MT_MEMORY | MT_RW | MT_SECURE)
32
33 #define MAP_FW_HANDOFF MAP_REGION_FLAT( \
34 PLAT_ARM_EL3_FW_HANDOFF_BASE, \
35 PLAT_ARM_FW_HANDOFF_SIZE, \
36 MT_MEMORY | MT_RO | MT_SECURE)
37
38 struct transfer_list_header *secure_tl __unused;
39
40 /*******************************************************************************
41 * Initialize the UART
42 ******************************************************************************/
43 static console_t arm_tsp_runtime_console;
44
arm_tsp_early_platform_setup(u_register_t arg0,u_register_t arg1,u_register_t arg2,u_register_t arg3)45 void arm_tsp_early_platform_setup(u_register_t arg0, u_register_t arg1,
46 u_register_t arg2, u_register_t arg3)
47 {
48 #if TRANSFER_LIST
49 secure_tl = (struct transfer_list_header *)arg3;
50 assert(secure_tl != NULL);
51
52 if (transfer_list_check_header(secure_tl) == TL_OPS_NON) {
53 ERROR("Invalid transfer list received");
54 transfer_list_dump(secure_tl);
55 panic();
56 }
57 #endif
58
59 /*
60 * Initialize a different console than already in use to display
61 * messages from TSP
62 */
63 int rc = console_pl011_register(PLAT_ARM_TSP_UART_BASE,
64 PLAT_ARM_TSP_UART_CLK_IN_HZ,
65 ARM_CONSOLE_BAUDRATE,
66 &arm_tsp_runtime_console);
67 if (rc == 0) {
68 panic();
69 }
70
71 console_set_scope(&arm_tsp_runtime_console,
72 CONSOLE_FLAG_BOOT | CONSOLE_FLAG_RUNTIME);
73 }
74
tsp_early_platform_setup(u_register_t arg0,u_register_t arg1,u_register_t arg2,u_register_t arg3)75 void tsp_early_platform_setup(u_register_t arg0, u_register_t arg1,
76 u_register_t arg2, u_register_t arg3)
77 {
78 arm_tsp_early_platform_setup(arg0, arg1, arg2, arg3);
79 }
80
81 /*******************************************************************************
82 * Perform platform specific setup placeholder
83 ******************************************************************************/
tsp_platform_setup(void)84 void tsp_platform_setup(void)
85 {
86 struct transfer_list_entry *te __unused;
87
88 /*
89 * On GICv2 the driver must be initialised before calling the plat_ic_*
90 * functions as they need the data structures. Higher versions don't.
91 */
92 #if USE_GIC_DRIVER == 2
93 gic_init(plat_my_core_pos());
94 #endif
95
96 #if TRANSFER_LIST && MEASURED_BOOT
97 te = transfer_list_find(secure_tl, TL_TAG_TPM_EVLOG);
98 assert(te != NULL);
99
100 /*
101 * Note the actual log is offset 4-bytes from the start of entry data, the
102 * first bytes are reserved.
103 */
104 event_log_dump(transfer_list_entry_data(te) + U(4), te->data_size - U(4));
105 #endif
106 }
107
108 /*******************************************************************************
109 * Perform the very early platform specific architectural setup here. At the
110 * moment this is only initializes the MMU
111 ******************************************************************************/
tsp_plat_arch_setup(void)112 void tsp_plat_arch_setup(void)
113 {
114 #if USE_COHERENT_MEM
115 /* Ensure ARM platforms don't use coherent memory in TSP */
116 assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U);
117 #endif
118
119 const mmap_region_t bl_regions[] = {
120 MAP_BL_TSP_TOTAL,
121 ARM_MAP_BL_RO,
122 #if TRANSFER_LIST
123 MAP_FW_HANDOFF,
124 #endif
125 {0}
126 };
127
128 setup_page_tables(bl_regions, plat_arm_get_mmap());
129 enable_mmu_el1(0);
130
131 #if PLAT_RO_XLAT_TABLES
132 arm_xlat_make_tables_readonly();
133 #endif
134 }
135