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Achin Gupta4f6ad662013-10-25 09:08:21 +01001/*
Dan Handleye83b0ca2014-01-14 18:17:09 +00002 * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
Achin Gupta4f6ad662013-10-25 09:08:21 +01003 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 *
10 * Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 *
14 * Neither the name of ARM nor the names of its contributors may be used
15 * to endorse or promote products derived from this software without specific
16 * prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
Dan Handley2bd4ef22014-04-09 13:14:54 +010031#include <arch.h>
Achin Gupta4f6ad662013-10-25 09:08:21 +010032#include <arch_helpers.h>
Dan Handley2bd4ef22014-04-09 13:14:54 +010033#include <assert.h>
34#include <bl_common.h>
Achin Gupta4f6ad662013-10-25 09:08:21 +010035#include <bl1.h>
Dan Handley2bd4ef22014-04-09 13:14:54 +010036#include <platform.h>
37#include <stdio.h>
Dan Handleybcd60ba2014-04-17 18:53:42 +010038#include "bl1_private.h"
Achin Gupta4f6ad662013-10-25 09:08:21 +010039
40/*******************************************************************************
41 * Function to perform late architectural and platform specific initialization.
42 * It also locates and loads the BL2 raw binary image in the trusted DRAM. Only
43 * called by the primary cpu after a cold boot.
44 * TODO: Add support for alternative image load mechanism e.g using virtio/elf
45 * loader etc.
46 ******************************************************************************/
47void bl1_main(void)
48{
James Morrissey40a6f642014-02-10 14:24:36 +000049#if DEBUG
Vikram Kanigiri78a6e0c2014-03-11 17:41:00 +000050 unsigned long sctlr_el3 = read_sctlr_el3();
James Morrissey40a6f642014-02-10 14:24:36 +000051#endif
Achin Gupta4f6ad662013-10-25 09:08:21 +010052 unsigned long bl2_base;
53 unsigned int load_type = TOP_LOAD, spsr;
Dan Handleye2712bc2014-04-10 15:37:22 +010054 meminfo_t *bl1_tzram_layout;
55 meminfo_t *bl2_tzram_layout = 0x0;
Achin Gupta4f6ad662013-10-25 09:08:21 +010056
57 /*
58 * Ensure that MMU/Caches and coherency are turned on
59 */
60 assert(sctlr_el3 | SCTLR_M_BIT);
61 assert(sctlr_el3 | SCTLR_C_BIT);
62 assert(sctlr_el3 | SCTLR_I_BIT);
63
64 /* Perform remaining generic architectural setup from EL3 */
65 bl1_arch_setup();
66
67 /* Perform platform setup in BL1. */
68 bl1_platform_setup();
69
70 /* Announce our arrival */
71 printf(FIRMWARE_WELCOME_STR);
Jon Medhurstecf0a712014-02-17 12:18:24 +000072 printf("%s\n\r", build_message);
Achin Gupta4f6ad662013-10-25 09:08:21 +010073
74 /*
75 * Find out how much free trusted ram remains after BL1 load
76 * & load the BL2 image at its top
77 */
Sandrine Bailleuxee12f6f2013-11-28 14:55:58 +000078 bl1_tzram_layout = bl1_plat_sec_mem_layout();
79 bl2_base = load_image(bl1_tzram_layout,
Achin Gupta4f6ad662013-10-25 09:08:21 +010080 (const char *) BL2_IMAGE_NAME,
81 load_type, BL2_BASE);
82
83 /*
84 * Create a new layout of memory for BL2 as seen by BL1 i.e.
85 * tell it the amount of total and free memory available.
86 * This layout is created at the first free address visible
87 * to BL2. BL2 will read the memory layout before using its
88 * memory for other purposes.
89 */
Dan Handleye2712bc2014-04-10 15:37:22 +010090 bl2_tzram_layout = (meminfo_t *) bl1_tzram_layout->free_base;
Sandrine Bailleuxee12f6f2013-11-28 14:55:58 +000091 init_bl2_mem_layout(bl1_tzram_layout,
Achin Gupta4f6ad662013-10-25 09:08:21 +010092 bl2_tzram_layout,
93 load_type,
94 bl2_base);
95
96 if (bl2_base) {
97 bl1_arch_next_el_setup();
98 spsr = make_spsr(MODE_EL1, MODE_SP_ELX, MODE_RW_64);
99 printf("Booting trusted firmware boot loader stage 2\n\r");
100#if DEBUG
101 printf("BL2 address = 0x%llx \n\r", (unsigned long long) bl2_base);
102 printf("BL2 cpsr = 0x%x \n\r", spsr);
103 printf("BL2 memory layout address = 0x%llx \n\r",
104 (unsigned long long) bl2_tzram_layout);
105#endif
Achin Guptae4d084e2014-02-19 17:18:23 +0000106 run_image(bl2_base,
107 spsr,
108 SECURE,
109 (void *) bl2_tzram_layout,
110 NULL);
Achin Gupta4f6ad662013-10-25 09:08:21 +0100111 }
112
113 /*
114 * TODO: print failure to load BL2 but also add a tzwdog timer
115 * which will reset the system eventually.
116 */
117 printf("Failed to load boot loader stage 2 (BL2) firmware.\n\r");
118 return;
119}
120
121/*******************************************************************************
122 * Temporary function to print the fact that BL2 has done its job and BL31 is
123 * about to be loaded. This is needed as long as printfs cannot be used
124 ******************************************************************************/
125void display_boot_progress(unsigned long entrypoint,
126 unsigned long spsr,
127 unsigned long mem_layout,
128 unsigned long ns_image_info)
129{
130 printf("Booting trusted firmware boot loader stage 3\n\r");
131#if DEBUG
132 printf("BL31 address = 0x%llx \n\r", (unsigned long long) entrypoint);
133 printf("BL31 cpsr = 0x%llx \n\r", (unsigned long long)spsr);
134 printf("BL31 memory layout address = 0x%llx \n\r", (unsigned long long)mem_layout);
135 printf("BL31 non-trusted image info address = 0x%llx\n\r", (unsigned long long)ns_image_info);
136#endif
137 return;
138}