2 * Image manipulator for Vybrid SoCs
4 * Derived from vybridimage.c
6 * (C) Copyright 2016 DENX Software Engineering GmbH
7 * Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
9 * SPDX-License-Identifier: GPL-2.0+
12 #include "imagetool.h"
17 * NAND page 0 boot header
20 struct nand_page_0_boot_header
{
23 uint8_t fcb_bytes
[512];
24 }; /* 0x00000000 - 0x000001ff */
25 uint8_t sw_ecc
[512]; /* 0x00000200 - 0x000003ff */
26 uint32_t padding
[65280]; /* 0x00000400 - 0x0003ffff */
27 uint8_t ivt_prefix
[1024]; /* 0x00040000 - 0x000403ff */
30 /* signature byte for a readable block */
32 static struct nand_page_0_boot_header vybridimage_header
;
34 static int vybridimage_check_image_types(uint8_t type
)
36 if (type
== IH_TYPE_VYBRIDIMAGE
)
41 static uint8_t vybridimage_sw_ecc(uint8_t byte
)
43 uint8_t bit0
= (byte
& (1 << 0)) ? 1 : 0;
44 uint8_t bit1
= (byte
& (1 << 1)) ? 1 : 0;
45 uint8_t bit2
= (byte
& (1 << 2)) ? 1 : 0;
46 uint8_t bit3
= (byte
& (1 << 3)) ? 1 : 0;
47 uint8_t bit4
= (byte
& (1 << 4)) ? 1 : 0;
48 uint8_t bit5
= (byte
& (1 << 5)) ? 1 : 0;
49 uint8_t bit6
= (byte
& (1 << 6)) ? 1 : 0;
50 uint8_t bit7
= (byte
& (1 << 7)) ? 1 : 0;
53 res
|= ((bit6
^ bit5
^ bit3
^ bit2
) << 0);
54 res
|= ((bit7
^ bit5
^ bit4
^ bit2
^ bit1
) << 1);
55 res
|= ((bit7
^ bit6
^ bit5
^ bit1
^ bit0
) << 2);
56 res
|= ((bit7
^ bit4
^ bit3
^ bit0
) << 3);
57 res
|= ((bit6
^ bit4
^ bit3
^ bit2
^ bit1
^ bit0
) << 4);
62 static int vybridimage_verify_header(unsigned char *ptr
, int image_size
,
63 struct image_tool_params
*params
)
65 struct nand_page_0_boot_header
*hdr
=
66 (struct nand_page_0_boot_header
*)ptr
;
69 if (hdr
->fcb
[1] != 0x46434220)
73 if (hdr
->fcb
[7] != 64)
75 if (hdr
->fcb
[14] != 6)
77 if (hdr
->fcb
[30] != 0x0001ff00)
79 if (hdr
->fcb
[43] != 1)
81 if (hdr
->fcb
[54] != 0)
83 if (hdr
->fcb
[55] != 8)
86 /* check software ECC */
87 for (idx
= 0; idx
< sizeof(hdr
->fcb_bytes
); idx
++) {
88 uint8_t sw_ecc
= vybridimage_sw_ecc(hdr
->fcb_bytes
[idx
]);
89 if (sw_ecc
!= hdr
->sw_ecc
[idx
])
96 static void vybridimage_set_header(void *ptr
, struct stat
*sbuf
, int ifd
,
97 struct image_tool_params
*params
)
99 struct nand_page_0_boot_header
*hdr
=
100 (struct nand_page_0_boot_header
*)ptr
;
103 /* fill header with 0x00 for first 56 entries then 0xff */
104 memset(&hdr
->fcb
[0], 0x0, 56*sizeof(uint32_t));
105 memset(&hdr
->fcb
[56], 0xff, 72*sizeof(uint32_t));
106 /* fill SW ecc and padding with 0xff */
107 memset(&hdr
->sw_ecc
[0], 0xff, sizeof(hdr
->sw_ecc
));
108 memset(&hdr
->padding
[0], 0xff, sizeof(hdr
->padding
));
109 /* fill IVT prefix with 0x00 */
110 memset(&hdr
->ivt_prefix
[0], 0x00, sizeof(hdr
->ivt_prefix
));
113 hdr
->fcb
[1] = 0x46434220; /* signature */
114 hdr
->fcb
[2] = 0x00000001; /* version */
115 hdr
->fcb
[5] = 2048; /* page size */
116 hdr
->fcb
[6] = (2048+64); /* page + OOB size */
117 hdr
->fcb
[7] = 64; /* pages per block */
118 hdr
->fcb
[14] = 6; /* ECC mode 6 */
119 hdr
->fcb
[26] = 128; /* fw address (0x40000) in 2K pages */
120 hdr
->fcb
[27] = 128; /* fw address (0x40000) in 2K pages */
121 hdr
->fcb
[30] = 0x0001ff00; /* DBBT search area start address */
122 hdr
->fcb
[33] = 2048; /* BB marker physical offset */
123 hdr
->fcb
[43] = 1; /* DISBBM */
124 hdr
->fcb
[54] = 0; /* DISBB_Search */
125 hdr
->fcb
[55] = 8; /* Bad block search limit */
127 /* compute software ECC */
128 for (idx
= 0; idx
< sizeof(hdr
->fcb_bytes
); idx
++)
129 hdr
->sw_ecc
[idx
] = vybridimage_sw_ecc(hdr
->fcb_bytes
[idx
]);
132 static void vybridimage_print_hdr_field(struct nand_page_0_boot_header
*hdr
,
135 printf("header.fcb[%d] = %08x\n", idx
, hdr
->fcb
[idx
]);
138 static void vybridimage_print_header(const void *ptr
)
140 struct nand_page_0_boot_header
*hdr
=
141 (struct nand_page_0_boot_header
*)ptr
;
144 for (idx
= 0; idx
< 56; idx
++)
145 vybridimage_print_hdr_field(hdr
, idx
);
149 * vybridimage parameters
154 sizeof(vybridimage_header
),
155 (void *)&vybridimage_header
,
157 vybridimage_verify_header
,
158 vybridimage_print_header
,
159 vybridimage_set_header
,
161 vybridimage_check_image_types
,