1 /*
2 * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <platform_def.h>
8
9 #include <arch.h>
10 #include <arch_helpers.h>
11 #include <common/bl_common.h>
12 #include <common/debug.h>
13 #include <lib/mmio.h>
14 #include <lib/xlat_tables/xlat_mmu_helpers.h>
15 #include <lib/xlat_tables/xlat_tables_defs.h>
16
17 #include <rpi_shared.h>
18
19 /* Data structure which holds the extents of the trusted SRAM for BL1 */
20 static meminfo_t bl1_tzram_layout;
21
bl1_plat_sec_mem_layout(void)22 meminfo_t *bl1_plat_sec_mem_layout(void)
23 {
24 return &bl1_tzram_layout;
25 }
26
27 /*******************************************************************************
28 * Perform any BL1 specific platform actions.
29 ******************************************************************************/
bl1_early_platform_setup(void)30 void bl1_early_platform_setup(void)
31 {
32 /* use the 19.2 MHz clock for the architected timer */
33 mmio_write_32(RPI3_INTC_BASE_ADDRESS + RPI3_INTC_CONTROL_OFFSET, 0);
34 mmio_write_32(RPI3_INTC_BASE_ADDRESS + RPI3_INTC_PRESCALER_OFFSET,
35 0x80000000);
36
37 /* Initialize the console to provide early debug support */
38 rpi3_console_init();
39
40 /* Allow BL1 to see the whole Trusted RAM */
41 bl1_tzram_layout.total_base = BL_RAM_BASE;
42 bl1_tzram_layout.total_size = BL_RAM_SIZE;
43 }
44
45 /******************************************************************************
46 * Perform the very early platform specific architecture setup. This only
47 * does basic initialization. Later architectural setup (bl1_arch_setup())
48 * does not do anything platform specific.
49 *****************************************************************************/
bl1_plat_arch_setup(void)50 void bl1_plat_arch_setup(void)
51 {
52 rpi3_setup_page_tables(bl1_tzram_layout.total_base,
53 bl1_tzram_layout.total_size,
54 BL_CODE_BASE, BL1_CODE_END,
55 BL1_RO_DATA_BASE, BL1_RO_DATA_END
56 #if USE_COHERENT_MEM
57 , BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_END
58 #endif
59 );
60
61 enable_mmu_el3(0);
62 }
63
bl1_platform_setup(void)64 void bl1_platform_setup(void)
65 {
66 uint32_t __unused rev;
67 int __unused rc;
68
69 rc = rpi3_vc_hardware_get_board_revision(&rev);
70
71 if (rc == 0) {
72 const char __unused *model, __unused *info;
73
74 switch (rev) {
75 case 0xA02082:
76 model = "Raspberry Pi 3 Model B";
77 info = "(1GB, Sony, UK)";
78 break;
79 case 0xA22082:
80 model = "Raspberry Pi 3 Model B";
81 info = "(1GB, Embest, China)";
82 break;
83 case 0xA020D3:
84 model = "Raspberry Pi 3 Model B+";
85 info = "(1GB, Sony, UK)";
86 break;
87 default:
88 model = "Unknown";
89 info = "(Unknown)";
90 ERROR("rpi3: Unknown board revision 0x%08x\n", rev);
91 break;
92 }
93
94 NOTICE("rpi3: Detected: %s %s [0x%08x]\n", model, info, rev);
95 } else {
96 ERROR("rpi3: Unable to detect board revision\n");
97 }
98
99 /* Initialise the IO layer and register platform IO devices */
100 plat_rpi3_io_setup();
101 }
102