1 /*
2 * Copyright (c) 2015-2023, 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 #include <drivers/arm/pl061_gpio.h>
11 #include <plat/common/platform.h>
12
13 #include "qemu_private.h"
14
15 #define MAP_BL31_TOTAL MAP_REGION_FLAT( \
16 BL31_BASE, \
17 BL31_END - BL31_BASE, \
18 MT_MEMORY | MT_RW | EL3_PAS)
19 #define MAP_BL31_RO MAP_REGION_FLAT( \
20 BL_CODE_BASE, \
21 BL_CODE_END - BL_CODE_BASE, \
22 MT_CODE | EL3_PAS), \
23 MAP_REGION_FLAT( \
24 BL_RO_DATA_BASE, \
25 BL_RO_DATA_END \
26 - BL_RO_DATA_BASE, \
27 MT_RO_DATA | EL3_PAS)
28
29 #if USE_COHERENT_MEM
30 #define MAP_BL_COHERENT_RAM MAP_REGION_FLAT( \
31 BL_COHERENT_RAM_BASE, \
32 BL_COHERENT_RAM_END \
33 - BL_COHERENT_RAM_BASE, \
34 MT_DEVICE | MT_RW | EL3_PAS)
35 #endif
36
37 /*
38 * Placeholder variables for copying the arguments that have been passed to
39 * BL3-1 from BL2.
40 */
41 static entry_point_info_t bl32_image_ep_info;
42 static entry_point_info_t bl33_image_ep_info;
43
44 /*******************************************************************************
45 * Perform any BL3-1 early platform setup. Here is an opportunity to copy
46 * parameters passed by the calling EL (S-EL1 in BL2 & EL3 in BL1) before
47 * they are lost (potentially). This needs to be done before the MMU is
48 * initialized so that the memory layout can be used while creating page
49 * tables. BL2 has flushed this information to memory, so we are guaranteed
50 * to pick up good data.
51 ******************************************************************************/
bl31_early_platform_setup2(u_register_t arg0,u_register_t arg1,u_register_t arg2,u_register_t arg3)52 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
53 u_register_t arg2, u_register_t arg3)
54 {
55 /* Initialize the console to provide early debug support */
56 qemu_console_init();
57
58 /* Platform names have to be lowercase. */
59 #ifdef PLAT_qemu_sbsa
60 sip_svc_init();
61 #endif
62
63 /*
64 * Check params passed from BL2
65 */
66 bl_params_t *params_from_bl2 = (bl_params_t *)arg0;
67
68 assert(params_from_bl2);
69 assert(params_from_bl2->h.type == PARAM_BL_PARAMS);
70 assert(params_from_bl2->h.version >= VERSION_2);
71
72 bl_params_node_t *bl_params = params_from_bl2->head;
73
74 /*
75 * Copy BL33 and BL32 (if present), entry point information.
76 * They are stored in Secure RAM, in BL2's address space.
77 */
78 while (bl_params) {
79 if (bl_params->image_id == BL32_IMAGE_ID)
80 bl32_image_ep_info = *bl_params->ep_info;
81
82 if (bl_params->image_id == BL33_IMAGE_ID)
83 bl33_image_ep_info = *bl_params->ep_info;
84
85 bl_params = bl_params->next_params_info;
86 }
87
88 if (!bl33_image_ep_info.pc)
89 panic();
90 }
91
bl31_plat_arch_setup(void)92 void bl31_plat_arch_setup(void)
93 {
94 const mmap_region_t bl_regions[] = {
95 MAP_BL31_TOTAL,
96 MAP_BL31_RO,
97 #if USE_COHERENT_MEM
98 MAP_BL_COHERENT_RAM,
99 #endif
100 {0}
101 };
102
103 setup_page_tables(bl_regions, plat_qemu_get_mmap());
104
105 enable_mmu_el3(0);
106 }
107
qemu_gpio_init(void)108 static void qemu_gpio_init(void)
109 {
110 #ifdef SECURE_GPIO_BASE
111 pl061_gpio_init();
112 pl061_gpio_register(SECURE_GPIO_BASE, 0);
113 #endif
114 }
115
bl31_platform_setup(void)116 void bl31_platform_setup(void)
117 {
118 plat_qemu_gic_init();
119 qemu_gpio_init();
120 }
121
plat_get_syscnt_freq2(void)122 unsigned int plat_get_syscnt_freq2(void)
123 {
124 return SYS_COUNTER_FREQ_IN_TICKS;
125 }
126
127 /*******************************************************************************
128 * Return a pointer to the 'entry_point_info' structure of the next image
129 * for the security state specified. BL3-3 corresponds to the non-secure
130 * image type while BL3-2 corresponds to the secure image type. A NULL
131 * pointer is returned if the image does not exist.
132 ******************************************************************************/
bl31_plat_get_next_image_ep_info(uint32_t type)133 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
134 {
135 entry_point_info_t *next_image_info;
136
137 assert(sec_state_is_valid(type));
138 next_image_info = (type == NON_SECURE)
139 ? &bl33_image_ep_info : &bl32_image_ep_info;
140 /*
141 * None of the images on the ARM development platforms can have 0x0
142 * as the entrypoint
143 */
144 if (next_image_info->pc)
145 return next_image_info;
146 else
147 return NULL;
148 }
149
