1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2016 - 2017 Xilinx, Inc.
4 *
5 * Michal Simek <michal.simek@xilinx.com>
6 */
7
8 #include <common.h>
9 #include <asm/io.h>
10 #include <asm/arch/hardware.h>
11 #include <asm/arch/sys_proto.h>
12
13 /*
14 * atfhandoffparams
15 * Parameter bitfield encoding
16 * -----------------------------------------------------------------------------
17 * Exec State 0 0 -> Aarch64, 1-> Aarch32
18 * endianness 1 0 -> LE, 1 -> BE
19 * secure (TZ) 2 0 -> Non secure, 1 -> secure
20 * EL 3:4 00 -> EL0, 01 -> EL1, 10 -> EL2, 11 -> EL3
21 * CPU# 5:6 00 -> A53_0, 01 -> A53_1, 10 -> A53_2, 11 -> A53_3
22 */
23
24 #define FSBL_FLAGS_ESTATE_SHIFT 0
25 #define FSBL_FLAGS_ESTATE_MASK (1 << FSBL_FLAGS_ESTATE_SHIFT)
26 #define FSBL_FLAGS_ESTATE_A64 0
27 #define FSBL_FLAGS_ESTATE_A32 1
28
29 #define FSBL_FLAGS_ENDIAN_SHIFT 1
30 #define FSBL_FLAGS_ENDIAN_MASK (1 << FSBL_FLAGS_ENDIAN_SHIFT)
31 #define FSBL_FLAGS_ENDIAN_LE 0
32 #define FSBL_FLAGS_ENDIAN_BE 1
33
34 #define FSBL_FLAGS_TZ_SHIFT 2
35 #define FSBL_FLAGS_TZ_MASK (1 << FSBL_FLAGS_TZ_SHIFT)
36 #define FSBL_FLAGS_NON_SECURE 0
37 #define FSBL_FLAGS_SECURE 1
38
39 #define FSBL_FLAGS_EL_SHIFT 3
40 #define FSBL_FLAGS_EL_MASK (3 << FSBL_FLAGS_EL_SHIFT)
41 #define FSBL_FLAGS_EL0 0
42 #define FSBL_FLAGS_EL1 1
43 #define FSBL_FLAGS_EL2 2
44 #define FSBL_FLAGS_EL3 3
45
46 #define FSBL_FLAGS_CPU_SHIFT 5
47 #define FSBL_FLAGS_CPU_MASK (3 << FSBL_FLAGS_CPU_SHIFT)
48 #define FSBL_FLAGS_A53_0 0
49 #define FSBL_FLAGS_A53_1 1
50 #define FSBL_FLAGS_A53_2 2
51 #define FSBL_FLAGS_A53_3 3
52
53 #define FSBL_MAX_PARTITIONS 8
54
55 /* Structure corresponding to each partition entry */
56 struct xfsbl_partition {
57 uint64_t entry_point;
58 uint64_t flags;
59 };
60
61 /* Structure for handoff parameters to ARM Trusted Firmware (ATF) */
62 struct xfsbl_atf_handoff_params {
63 uint8_t magic[4];
64 uint32_t num_entries;
65 struct xfsbl_partition partition[FSBL_MAX_PARTITIONS];
66 };
67
68 #ifdef CONFIG_SPL_OS_BOOT
handoff_setup(void)69 void handoff_setup(void)
70 {
71 struct xfsbl_atf_handoff_params *atfhandoffparams;
72
73 atfhandoffparams = (void *)CONFIG_SPL_TEXT_BASE;
74 atfhandoffparams->magic[0] = 'X';
75 atfhandoffparams->magic[1] = 'L';
76 atfhandoffparams->magic[2] = 'N';
77 atfhandoffparams->magic[3] = 'X';
78
79 atfhandoffparams->num_entries = 1;
80 atfhandoffparams->partition[0].entry_point = CONFIG_SYS_TEXT_BASE;
81 atfhandoffparams->partition[0].flags = FSBL_FLAGS_EL2 <<
82 FSBL_FLAGS_EL_SHIFT;
83
84 writel(CONFIG_SPL_TEXT_BASE, &pmu_base->gen_storage6);
85 }
86 #endif
87