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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Michal Simek509d4b92017-01-09 10:05:16 +01002/*
3 * Copyright 2016 - 2017 Xilinx, Inc.
4 *
5 * Michal Simek <michal.simek@xilinx.com>
Michal Simek509d4b92017-01-09 10:05:16 +01006 */
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 */
56struct xfsbl_partition {
57 uint64_t entry_point;
58 uint64_t flags;
59};
60
61/* Structure for handoff parameters to ARM Trusted Firmware (ATF) */
62struct xfsbl_atf_handoff_params {
63 uint8_t magic[4];
64 uint32_t num_entries;
65 struct xfsbl_partition partition[FSBL_MAX_PARTITIONS];
66};
67
Michal Simek96a60c02020-09-03 10:47:49 +020068#ifdef CONFIG_SPL_ATF
Michal Simek3b26c862019-12-19 18:16:16 +010069struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
70 uintptr_t bl33_entry,
71 uintptr_t fdt_addr)
Michal Simek509d4b92017-01-09 10:05:16 +010072{
73 struct xfsbl_atf_handoff_params *atfhandoffparams;
Michal Simek653736c2021-05-31 11:06:59 +020074 u32 index = 0;
Michal Simek509d4b92017-01-09 10:05:16 +010075
76 atfhandoffparams = (void *)CONFIG_SPL_TEXT_BASE;
77 atfhandoffparams->magic[0] = 'X';
78 atfhandoffparams->magic[1] = 'L';
79 atfhandoffparams->magic[2] = 'N';
80 atfhandoffparams->magic[3] = 'X';
81
Michal Simek653736c2021-05-31 11:06:59 +020082 if (bl32_entry) {
83 atfhandoffparams->partition[index].entry_point = bl32_entry;
84 atfhandoffparams->partition[index].flags = FSBL_FLAGS_EL1 << FSBL_FLAGS_EL_SHIFT |
85 FSBL_FLAGS_SECURE << FSBL_FLAGS_TZ_SHIFT;
86 index++;
Michal Simek3b26c862019-12-19 18:16:16 +010087 }
Michal Simek509d4b92017-01-09 10:05:16 +010088
Michal Simek653736c2021-05-31 11:06:59 +020089 if (bl33_entry) {
90 atfhandoffparams->partition[index].entry_point = bl33_entry;
91 atfhandoffparams->partition[index].flags = FSBL_FLAGS_EL2 <<
92 FSBL_FLAGS_EL_SHIFT;
93 index++;
94 }
95
96 atfhandoffparams->num_entries = index;
97
Michal Simek509d4b92017-01-09 10:05:16 +010098 writel(CONFIG_SPL_TEXT_BASE, &pmu_base->gen_storage6);
Michal Simek3b26c862019-12-19 18:16:16 +010099
100 return NULL;
Michal Simek509d4b92017-01-09 10:05:16 +0100101}
102#endif