1 /*
2 * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
3 *
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
31 #include <bl_common.h>
32 #include <console.h>
33 #include <platform_tsp.h>
34 #include "../fvp_def.h"
35 #include "../fvp_private.h"
36
37 /*******************************************************************************
38 * Declarations of linker defined symbols which will help us find the layout
39 * of trusted SRAM
40 ******************************************************************************/
41 extern unsigned long __RO_START__;
42 extern unsigned long __RO_END__;
43 extern unsigned long __BL32_END__;
44
45 #if USE_COHERENT_MEM
46 extern unsigned long __COHERENT_RAM_START__;
47 extern unsigned long __COHERENT_RAM_END__;
48 #endif
49
50 /*
51 * The next 3 constants identify the extents of the code & RO data region and
52 * the limit of the BL3-2 image. These addresses are used by the MMU setup code
53 * and therefore they must be page-aligned. It is the responsibility of the
54 * linker script to ensure that __RO_START__, __RO_END__ & & __BL32_END__
55 * linker symbols refer to page-aligned addresses.
56 */
57 #define BL32_RO_BASE (unsigned long)(&__RO_START__)
58 #define BL32_RO_LIMIT (unsigned long)(&__RO_END__)
59 #define BL32_END (unsigned long)(&__BL32_END__)
60
61 #if USE_COHERENT_MEM
62 /*
63 * The next 2 constants identify the extents of the coherent memory region.
64 * These addresses are used by the MMU setup code and therefore they must be
65 * page-aligned. It is the responsibility of the linker script to ensure that
66 * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to
67 * page-aligned addresses.
68 */
69 #define BL32_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__)
70 #define BL32_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__)
71 #endif
72
73 /*******************************************************************************
74 * Initialize the UART
75 ******************************************************************************/
tsp_early_platform_setup(void)76 void tsp_early_platform_setup(void)
77 {
78 /*
79 * Initialize a different console than already in use to display
80 * messages from TSP
81 */
82 console_init(PL011_UART2_BASE, PL011_UART2_CLK_IN_HZ, PL011_BAUDRATE);
83
84 /* Initialize the platform config for future decision making */
85 fvp_config_setup();
86 }
87
88 /*******************************************************************************
89 * Perform platform specific setup placeholder
90 ******************************************************************************/
tsp_platform_setup(void)91 void tsp_platform_setup(void)
92 {
93 fvp_gic_init();
94 }
95
96 /*******************************************************************************
97 * Perform the very early platform specific architectural setup here. At the
98 * moment this is only intializes the MMU
99 ******************************************************************************/
tsp_plat_arch_setup(void)100 void tsp_plat_arch_setup(void)
101 {
102 fvp_configure_mmu_el1(BL32_RO_BASE,
103 (BL32_END - BL32_RO_BASE),
104 BL32_RO_BASE,
105 BL32_RO_LIMIT
106 #if USE_COHERENT_MEM
107 , BL32_COHERENT_RAM_BASE,
108 BL32_COHERENT_RAM_LIMIT
109 #endif
110 );
111 }
112