1 /*
2 * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8 #include <common/bl_common.h>
9 #include <common/interrupt_props.h>
10 #include <drivers/arm/gicv2.h>
11 #include <lib/mmio.h>
12 #include <lib/xlat_tables/xlat_mmu_helpers.h>
13 #include <plat/common/platform.h>
14 #include <platform_def.h>
15
16 #include "aml_private.h"
17
18 /*
19 * Placeholder variables for copying the arguments that have been passed to
20 * BL31 from BL2.
21 */
22 static entry_point_info_t bl32_image_ep_info;
23 static entry_point_info_t bl33_image_ep_info;
24 static image_info_t bl30_image_info;
25 static image_info_t bl301_image_info;
26
27 /*******************************************************************************
28 * Return a pointer to the 'entry_point_info' structure of the next image for
29 * the security state specified. BL33 corresponds to the non-secure image type
30 * while BL32 corresponds to the secure image type. A NULL pointer is returned
31 * if the image does not exist.
32 ******************************************************************************/
bl31_plat_get_next_image_ep_info(uint32_t type)33 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
34 {
35 entry_point_info_t *next_image_info;
36
37 next_image_info = (type == NON_SECURE) ?
38 &bl33_image_ep_info : &bl32_image_ep_info;
39
40 /* None of the images can have 0x0 as the entrypoint. */
41 if (next_image_info->pc != 0U)
42 return next_image_info;
43
44 return NULL;
45 }
46
47 /*******************************************************************************
48 * Perform any BL31 early platform setup. Here is an opportunity to copy
49 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before
50 * they are lost (potentially). This needs to be done before the MMU is
51 * initialized so that the memory layout can be used while creating page
52 * tables. BL2 has flushed this information to memory, so we are guaranteed
53 * to pick up good data.
54 ******************************************************************************/
55 struct g12a_bl31_param {
56 param_header_t h;
57 image_info_t *bl31_image_info;
58 entry_point_info_t *bl32_ep_info;
59 image_info_t *bl32_image_info;
60 entry_point_info_t *bl33_ep_info;
61 image_info_t *bl33_image_info;
62 image_info_t *scp_image_info[];
63 };
64
bl31_early_platform_setup2(u_register_t arg0,u_register_t arg1,u_register_t arg2,u_register_t arg3)65 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
66 u_register_t arg2, u_register_t arg3)
67 {
68 struct g12a_bl31_param *from_bl2;
69
70 /* Initialize the console to provide early debug support */
71 aml_console_init();
72
73 from_bl2 = (struct g12a_bl31_param *)arg0;
74
75 /* Check params passed from BL2 are not NULL. */
76 assert(from_bl2 != NULL);
77 assert(from_bl2->h.type == PARAM_BL31);
78 assert(from_bl2->h.version >= VERSION_1);
79
80 /*
81 * Copy BL32 and BL33 entry point information. It is stored in Secure
82 * RAM, in BL2's address space.
83 */
84 bl32_image_ep_info = *from_bl2->bl32_ep_info;
85 bl33_image_ep_info = *from_bl2->bl33_ep_info;
86
87 if (bl33_image_ep_info.pc == 0U) {
88 ERROR("BL31: BL33 entrypoint not obtained from BL2\n");
89 panic();
90 }
91
92 bl30_image_info = *from_bl2->scp_image_info[0];
93 bl301_image_info = *from_bl2->scp_image_info[1];
94 }
95
bl31_plat_arch_setup(void)96 void bl31_plat_arch_setup(void)
97 {
98 aml_setup_page_tables();
99
100 enable_mmu_el3(0);
101 }
102
103 /*******************************************************************************
104 * GICv2 driver setup information
105 ******************************************************************************/
106 static const interrupt_prop_t g12a_interrupt_props[] = {
107 INTR_PROP_DESC(IRQ_SEC_PHY_TIMER, GIC_HIGHEST_SEC_PRIORITY,
108 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
109 INTR_PROP_DESC(IRQ_SEC_SGI_0, GIC_HIGHEST_SEC_PRIORITY,
110 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
111 INTR_PROP_DESC(IRQ_SEC_SGI_1, GIC_HIGHEST_SEC_PRIORITY,
112 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
113 INTR_PROP_DESC(IRQ_SEC_SGI_2, GIC_HIGHEST_SEC_PRIORITY,
114 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
115 INTR_PROP_DESC(IRQ_SEC_SGI_3, GIC_HIGHEST_SEC_PRIORITY,
116 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
117 INTR_PROP_DESC(IRQ_SEC_SGI_4, GIC_HIGHEST_SEC_PRIORITY,
118 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
119 INTR_PROP_DESC(IRQ_SEC_SGI_5, GIC_HIGHEST_SEC_PRIORITY,
120 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
121 INTR_PROP_DESC(IRQ_SEC_SGI_6, GIC_HIGHEST_SEC_PRIORITY,
122 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
123 INTR_PROP_DESC(IRQ_SEC_SGI_7, GIC_HIGHEST_SEC_PRIORITY,
124 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL)
125 };
126
127 static const gicv2_driver_data_t g12a_gic_data = {
128 .gicd_base = AML_GICD_BASE,
129 .gicc_base = AML_GICC_BASE,
130 .interrupt_props = g12a_interrupt_props,
131 .interrupt_props_num = ARRAY_SIZE(g12a_interrupt_props)
132 };
133
bl31_platform_setup(void)134 void bl31_platform_setup(void)
135 {
136 aml_mhu_secure_init();
137
138 gicv2_driver_init(&g12a_gic_data);
139 gicv2_distif_init();
140 gicv2_pcpu_distif_init();
141 gicv2_cpuif_enable();
142 }
143