1 /*
2 * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <arch_helpers.h>
8 #include <arm_def.h>
9 #include <bl_common.h>
10 #include <console.h>
11 #include <plat_arm.h>
12 #include <platform_def.h>
13 #include <string.h>
14
15 /* Weak definitions may be overridden in specific ARM standard platform */
16 #pragma weak bl2u_platform_setup
17 #pragma weak bl2u_early_platform_setup
18 #pragma weak bl2u_plat_arch_setup
19
20 /*
21 * Perform ARM standard platform setup for BL2U
22 */
arm_bl2u_platform_setup(void)23 void arm_bl2u_platform_setup(void)
24 {
25 /* Initialize the secure environment */
26 plat_arm_security_setup();
27 }
28
bl2u_platform_setup(void)29 void bl2u_platform_setup(void)
30 {
31 arm_bl2u_platform_setup();
32 }
33
arm_bl2u_early_platform_setup(meminfo_t * mem_layout,void * plat_info)34 void arm_bl2u_early_platform_setup(meminfo_t *mem_layout, void *plat_info)
35 {
36 /* Initialize the console to provide early debug support */
37 console_init(PLAT_ARM_BOOT_UART_BASE, PLAT_ARM_BOOT_UART_CLK_IN_HZ,
38 ARM_CONSOLE_BAUDRATE);
39 }
40
41 /*******************************************************************************
42 * BL1 can pass platform dependent information to BL2U in x1.
43 * In case of ARM CSS platforms x1 contains SCP_BL2U image info.
44 * In case of ARM FVP platforms x1 is not used.
45 * In both cases, x0 contains the extents of the memory available to BL2U
46 ******************************************************************************/
bl2u_early_platform_setup(meminfo_t * mem_layout,void * plat_info)47 void bl2u_early_platform_setup(meminfo_t *mem_layout, void *plat_info)
48 {
49 arm_bl2u_early_platform_setup(mem_layout, plat_info);
50 }
51
52 /*******************************************************************************
53 * Perform the very early platform specific architectural setup here. At the
54 * moment this is only initializes the mmu in a quick and dirty way.
55 * The memory that is used by BL2U is only mapped.
56 ******************************************************************************/
arm_bl2u_plat_arch_setup(void)57 void arm_bl2u_plat_arch_setup(void)
58 {
59 arm_setup_page_tables(BL2U_BASE,
60 BL31_LIMIT,
61 BL_CODE_BASE,
62 BL_CODE_END,
63 BL_RO_DATA_BASE,
64 BL_RO_DATA_END
65 #if USE_COHERENT_MEM
66 ,
67 BL_COHERENT_RAM_BASE,
68 BL_COHERENT_RAM_END
69 #endif
70 );
71 #ifdef AARCH32
72 enable_mmu_secure(0);
73 #else
74 enable_mmu_el1(0);
75 #endif
76 }
77
bl2u_plat_arch_setup(void)78 void bl2u_plat_arch_setup(void)
79 {
80 arm_bl2u_plat_arch_setup();
81 }
82