imx8m: soc: enable SCTR clock before timer init
[oweals/u-boot.git] / board / xilinx / zynq / bootimg.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2018 Xilinx, Inc.
4  */
5
6 #include <common.h>
7 #include <asm/io.h>
8 #include <asm/arch/hardware.h>
9 #include <asm/arch/sys_proto.h>
10 #include <u-boot/md5.h>
11 #include <zynq_bootimg.h>
12
13 DECLARE_GLOBAL_DATA_PTR;
14
15 #define ZYNQ_IMAGE_PHDR_OFFSET          0x09C
16 #define ZYNQ_IMAGE_FSBL_LEN_OFFSET      0x040
17 #define ZYNQ_PART_HDR_CHKSUM_WORD_COUNT 0x0F
18 #define ZYNQ_PART_HDR_WORD_COUNT        0x10
19 #define ZYNQ_MAXIMUM_IMAGE_WORD_LEN     0x40000000
20 #define MD5_CHECKSUM_SIZE       16
21
22 struct headerarray {
23         u32 fields[16];
24 };
25
26 /*
27  * Check whether the given partition is last partition or not
28  */
29 static int zynq_islastpartition(struct headerarray *head)
30 {
31         int index;
32
33         debug("%s\n", __func__);
34         if (head->fields[ZYNQ_PART_HDR_CHKSUM_WORD_COUNT] != 0xFFFFFFFF)
35                 return -1;
36
37         for (index = 0; index < ZYNQ_PART_HDR_WORD_COUNT - 1; index++) {
38                 if (head->fields[index] != 0x0)
39                         return -1;
40         }
41
42         return 0;
43 }
44
45 /*
46  * Get the partition count from the partition header
47  */
48 int zynq_get_part_count(struct partition_hdr *part_hdr_info)
49 {
50         u32 count;
51         struct headerarray *hap;
52
53         debug("%s\n", __func__);
54
55         for (count = 0; count < ZYNQ_MAX_PARTITION_NUMBER; count++) {
56                 hap = (struct headerarray *)&part_hdr_info[count];
57                 if (zynq_islastpartition(hap) != -1)
58                         break;
59         }
60
61         return count;
62 }
63
64 /*
65  * Get the partition info of all the partitions available.
66  */
67 int zynq_get_partition_info(u32 image_base_addr, u32 *fsbl_len,
68                             struct partition_hdr *part_hdr)
69 {
70         u32 parthdroffset;
71
72         *fsbl_len = *((u32 *)(image_base_addr + ZYNQ_IMAGE_FSBL_LEN_OFFSET));
73
74         parthdroffset = *((u32 *)(image_base_addr + ZYNQ_IMAGE_PHDR_OFFSET));
75
76         parthdroffset += image_base_addr;
77
78         memcpy(part_hdr, (u32 *)parthdroffset,
79                (sizeof(struct partition_hdr) * ZYNQ_MAX_PARTITION_NUMBER));
80
81         return 0;
82 }
83
84 /*
85  * Check whether the partition header is valid or not
86  */
87 int zynq_validate_hdr(struct partition_hdr *header)
88 {
89         struct headerarray *hap;
90         u32 index;
91         u32 checksum;
92
93         debug("%s\n", __func__);
94
95         hap = (struct headerarray *)header;
96
97         for (index = 0; index < ZYNQ_PART_HDR_WORD_COUNT; index++) {
98                 if (hap->fields[index])
99                         break;
100         }
101         if (index == ZYNQ_PART_HDR_WORD_COUNT)
102                 return -1;
103
104         checksum = 0;
105         for (index = 0; index < ZYNQ_PART_HDR_CHKSUM_WORD_COUNT; index++)
106                 checksum += hap->fields[index];
107
108         checksum ^= 0xFFFFFFFF;
109
110         if (hap->fields[ZYNQ_PART_HDR_CHKSUM_WORD_COUNT] != checksum) {
111                 printf("Error: Checksum 0x%8.8x != 0x%8.8x\n",
112                        checksum, hap->fields[ZYNQ_PART_HDR_CHKSUM_WORD_COUNT]);
113                 return -1;
114         }
115
116         if (header->imagewordlen > ZYNQ_MAXIMUM_IMAGE_WORD_LEN) {
117                 printf("INVALID_PARTITION_LENGTH\n");
118                 return -1;
119         }
120
121         return 0;
122 }
123
124 /*
125  * Validate the partition by calculationg the md5 checksum for the
126  * partition and compare with checksum present in checksum offset of
127  * partition
128  */
129 int zynq_validate_partition(u32 start_addr, u32 len, u32 chksum_off)
130 {
131         u8 checksum[MD5_CHECKSUM_SIZE];
132         u8 calchecksum[MD5_CHECKSUM_SIZE];
133
134         memcpy(&checksum[0], (u32 *)chksum_off, MD5_CHECKSUM_SIZE);
135
136         md5_wd((u8 *)start_addr, len, &calchecksum[0], 0x10000);
137
138         if (!memcmp(checksum, calchecksum, MD5_CHECKSUM_SIZE))
139                 return 0;
140
141         printf("Error: Partition DataChecksum\n");
142         return -1;
143 }