1 /*
2 * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8 #include <string.h>
9
10 #include <platform_def.h>
11
12 #include <arch_helpers.h>
13 #include <common/bl_common.h>
14 #include <drivers/generic_delay_timer.h>
15 #include <plat/arm/common/plat_arm.h>
16 #include <plat/common/platform.h>
17
18 /* Weak definitions may be overridden in specific ARM standard platform */
19 #pragma weak bl2u_platform_setup
20 #pragma weak bl2u_early_platform_setup
21 #pragma weak bl2u_plat_arch_setup
22
23 #define MAP_BL2U_TOTAL MAP_REGION_FLAT( \
24 BL2U_BASE, \
25 BL2U_LIMIT - BL2U_BASE, \
26 MT_MEMORY | MT_RW | MT_SECURE)
27
28 /*
29 * Perform ARM standard platform setup for BL2U
30 */
arm_bl2u_platform_setup(void)31 void arm_bl2u_platform_setup(void)
32 {
33 /* Initialize the secure environment */
34 plat_arm_security_setup();
35 }
36
bl2u_platform_setup(void)37 void bl2u_platform_setup(void)
38 {
39 arm_bl2u_platform_setup();
40 }
41
arm_bl2u_early_platform_setup(struct meminfo * mem_layout,void * plat_info)42 void arm_bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info)
43 {
44 /* Initialize the console to provide early debug support */
45 arm_console_boot_init();
46
47 generic_delay_timer_init();
48 }
49
50 /*******************************************************************************
51 * BL1 can pass platform dependent information to BL2U in x1.
52 * In case of ARM CSS platforms x1 contains SCP_BL2U image info.
53 * In case of ARM FVP platforms x1 is not used.
54 * In both cases, x0 contains the extents of the memory available to BL2U
55 ******************************************************************************/
bl2u_early_platform_setup(struct meminfo * mem_layout,void * plat_info)56 void bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info)
57 {
58 arm_bl2u_early_platform_setup(mem_layout, plat_info);
59 }
60
61 /*******************************************************************************
62 * Perform the very early platform specific architectural setup here. At the
63 * moment this is only initializes the mmu in a quick and dirty way.
64 * The memory that is used by BL2U is only mapped.
65 ******************************************************************************/
arm_bl2u_plat_arch_setup(void)66 void arm_bl2u_plat_arch_setup(void)
67 {
68
69 #if USE_COHERENT_MEM
70 /* Ensure ARM platforms dont use coherent memory in BL2U */
71 assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U);
72 #endif
73
74 const mmap_region_t bl_regions[] = {
75 MAP_BL2U_TOTAL,
76 ARM_MAP_BL_RO,
77 #if USE_ROMLIB
78 ARM_MAP_ROMLIB_CODE,
79 ARM_MAP_ROMLIB_DATA,
80 #endif
81 {0}
82 };
83
84 setup_page_tables(bl_regions, plat_arm_get_mmap());
85
86 #ifdef __aarch64__
87 enable_mmu_el1(0);
88 #else
89 enable_mmu_svc_mon(0);
90 #endif
91 arm_setup_romlib();
92 }
93
bl2u_plat_arch_setup(void)94 void bl2u_plat_arch_setup(void)
95 {
96 arm_bl2u_plat_arch_setup();
97 }
98