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10b84fe1 SG |
1 | /* |
2 | * (C) Copyright 2015 Google, Inc | |
3 | * Written by Simon Glass <sjg@chromium.org> | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | * | |
7 | * See README.rockchip for details of the rkspi format | |
8 | */ | |
9 | ||
10 | #include "imagetool.h" | |
11 | #include <image.h> | |
12 | #include <rc4.h> | |
13 | #include "mkimage.h" | |
14 | #include "rkcommon.h" | |
15 | ||
16 | enum { | |
10b84fe1 SG |
17 | RKSPI_SECT_LEN = RK_BLK_SIZE * 4, |
18 | }; | |
19 | ||
10b84fe1 SG |
20 | static void rkspi_set_header(void *buf, struct stat *sbuf, int ifd, |
21 | struct image_tool_params *params) | |
22 | { | |
23 | int sector; | |
24 | unsigned int size; | |
25 | int ret; | |
26 | ||
27 | size = params->orig_file_size; | |
7bf274b9 | 28 | ret = rkcommon_set_header(buf, size, params); |
10b84fe1 SG |
29 | debug("size %x\n", size); |
30 | if (ret) { | |
31 | /* TODO(sjg@chromium.org): This method should return an error */ | |
366aad4d PT |
32 | printf("Warning: SPL image is too large (size %#x) and will " |
33 | "not boot\n", size); | |
10b84fe1 SG |
34 | } |
35 | ||
10b84fe1 SG |
36 | /* |
37 | * Spread the image out so we only use the first 2KB of each 4KB | |
38 | * region. This is a feature of the SPI format required by the Rockchip | |
39 | * boot ROM. Its rationale is unknown. | |
40 | */ | |
41 | for (sector = size / RKSPI_SECT_LEN - 1; sector >= 0; sector--) { | |
25525ebe | 42 | debug("sector %u\n", sector); |
10b84fe1 SG |
43 | memmove(buf + sector * RKSPI_SECT_LEN * 2, |
44 | buf + sector * RKSPI_SECT_LEN, | |
45 | RKSPI_SECT_LEN); | |
46 | memset(buf + sector * RKSPI_SECT_LEN * 2 + RKSPI_SECT_LEN, | |
47 | '\0', RKSPI_SECT_LEN); | |
48 | } | |
49 | } | |
50 | ||
10b84fe1 SG |
51 | static int rkspi_check_image_type(uint8_t type) |
52 | { | |
53 | if (type == IH_TYPE_RKSPI) | |
54 | return EXIT_SUCCESS; | |
55 | else | |
56 | return EXIT_FAILURE; | |
57 | } | |
58 | ||
366aad4d PT |
59 | /* |
60 | * The SPI payload needs to be padded out to make space for odd half-sector | |
61 | * layout used in flash (i.e. only the first 2K of each 4K sector is used). | |
62 | */ | |
10b84fe1 SG |
63 | static int rkspi_vrec_header(struct image_tool_params *params, |
64 | struct image_type_params *tparams) | |
65 | { | |
ad972ac3 | 66 | int padding = rkcommon_vrec_header(params, tparams, RK_INIT_SIZE_ALIGN); |
366aad4d PT |
67 | /* |
68 | * The file size has not been adjusted at this point (our caller will | |
69 | * eventually add the header/padding to the file_size), so we need to | |
70 | * add up the header_size, file_size and padding ourselves. | |
71 | */ | |
72 | int padded_size = tparams->header_size + params->file_size + padding; | |
10b84fe1 | 73 | |
366aad4d PT |
74 | /* |
75 | * We need to store the original file-size (i.e. before padding), as | |
76 | * imagetool does not set this during its adjustment of file_size. | |
77 | */ | |
78 | params->orig_file_size = padded_size; | |
10b84fe1 | 79 | |
366aad4d PT |
80 | /* |
81 | * Converting to the SPI format (i.e. splitting each 4K page into two | |
82 | * 2K subpages and then padding these 2K pages up to take a complete | |
83 | * 4K sector again) will will double the image size. | |
84 | * | |
85 | * Thus we return the padded_size as an additional padding requirement | |
86 | * (be sure to add this to the padding returned from the common code). | |
87 | */ | |
88 | return padded_size + padding; | |
10b84fe1 SG |
89 | } |
90 | ||
91 | /* | |
92 | * rk_spi parameters | |
93 | */ | |
94 | U_BOOT_IMAGE_TYPE( | |
95 | rkspi, | |
96 | "Rockchip SPI Boot Image support", | |
111bcc4f PT |
97 | 0, |
98 | NULL, | |
7bf274b9 | 99 | rkcommon_check_params, |
2fb371ff PT |
100 | rkcommon_verify_header, |
101 | rkcommon_print_header, | |
10b84fe1 | 102 | rkspi_set_header, |
2fb371ff | 103 | NULL, |
10b84fe1 SG |
104 | rkspi_check_image_type, |
105 | NULL, | |
106 | rkspi_vrec_header | |
107 | ); |