1 /*
2 * Copyright (c) 2015-2019, 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 /*
16 * Placeholder variables for copying the arguments that have been passed to
17 * BL3-1 from BL2.
18 */
19 static entry_point_info_t bl32_image_ep_info;
20 static entry_point_info_t bl33_image_ep_info;
21
22 /*******************************************************************************
23 * Perform any BL3-1 early platform setup. Here is an opportunity to copy
24 * parameters passed by the calling EL (S-EL1 in BL2 & EL3 in BL1) before
25 * they are lost (potentially). This needs to be done before the MMU is
26 * initialized so that the memory layout can be used while creating page
27 * tables. BL2 has flushed this information to memory, so we are guaranteed
28 * to pick up good data.
29 ******************************************************************************/
bl31_early_platform_setup2(u_register_t arg0,u_register_t arg1,u_register_t arg2,u_register_t arg3)30 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
31 u_register_t arg2, u_register_t arg3)
32 {
33 /* Initialize the console to provide early debug support */
34 qemu_console_init();
35
36 /*
37 * Check params passed from BL2
38 */
39 bl_params_t *params_from_bl2 = (bl_params_t *)arg0;
40
41 assert(params_from_bl2);
42 assert(params_from_bl2->h.type == PARAM_BL_PARAMS);
43 assert(params_from_bl2->h.version >= VERSION_2);
44
45 bl_params_node_t *bl_params = params_from_bl2->head;
46
47 /*
48 * Copy BL33 and BL32 (if present), entry point information.
49 * They are stored in Secure RAM, in BL2's address space.
50 */
51 while (bl_params) {
52 if (bl_params->image_id == BL32_IMAGE_ID)
53 bl32_image_ep_info = *bl_params->ep_info;
54
55 if (bl_params->image_id == BL33_IMAGE_ID)
56 bl33_image_ep_info = *bl_params->ep_info;
57
58 bl_params = bl_params->next_params_info;
59 }
60
61 if (!bl33_image_ep_info.pc)
62 panic();
63 }
64
bl31_plat_arch_setup(void)65 void bl31_plat_arch_setup(void)
66 {
67 qemu_configure_mmu_el3(BL31_BASE, (BL31_END - BL31_BASE),
68 BL_CODE_BASE, BL_CODE_END,
69 BL_RO_DATA_BASE, BL_RO_DATA_END,
70 BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_END);
71 }
72
qemu_gpio_init(void)73 static void qemu_gpio_init(void)
74 {
75 #ifdef SECURE_GPIO_BASE
76 pl061_gpio_init();
77 pl061_gpio_register(SECURE_GPIO_BASE, 0);
78 #endif
79 }
80
bl31_platform_setup(void)81 void bl31_platform_setup(void)
82 {
83 plat_qemu_gic_init();
84 qemu_gpio_init();
85 }
86
plat_get_syscnt_freq2(void)87 unsigned int plat_get_syscnt_freq2(void)
88 {
89 return SYS_COUNTER_FREQ_IN_TICKS;
90 }
91
92 /*******************************************************************************
93 * Return a pointer to the 'entry_point_info' structure of the next image
94 * for the security state specified. BL3-3 corresponds to the non-secure
95 * image type while BL3-2 corresponds to the secure image type. A NULL
96 * pointer is returned if the image does not exist.
97 ******************************************************************************/
bl31_plat_get_next_image_ep_info(uint32_t type)98 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
99 {
100 entry_point_info_t *next_image_info;
101
102 assert(sec_state_is_valid(type));
103 next_image_info = (type == NON_SECURE)
104 ? &bl33_image_ep_info : &bl32_image_ep_info;
105 /*
106 * None of the images on the ARM development platforms can have 0x0
107 * as the entrypoint
108 */
109 if (next_image_info->pc)
110 return next_image_info;
111 else
112 return NULL;
113 }
114