1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2015 Google, Inc
3*4882a593Smuzhiyun * Written by Simon Glass <sjg@chromium.org>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * See README.rockchip for details of the rkspi format
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include "imagetool.h"
11*4882a593Smuzhiyun #include <image.h>
12*4882a593Smuzhiyun #include <rc4.h>
13*4882a593Smuzhiyun #include "mkimage.h"
14*4882a593Smuzhiyun #include "rkcommon.h"
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun enum {
17*4882a593Smuzhiyun RKSPI_SECT_LEN = RK_BLK_SIZE * 4,
18*4882a593Smuzhiyun };
19*4882a593Smuzhiyun
rkspi_set_header(void * buf,struct stat * sbuf,int ifd,struct image_tool_params * params)20*4882a593Smuzhiyun static void rkspi_set_header(void *buf, struct stat *sbuf, int ifd,
21*4882a593Smuzhiyun struct image_tool_params *params)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun int sector;
24*4882a593Smuzhiyun unsigned int size;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun size = params->orig_file_size;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun rkcommon_set_header(buf, sbuf, ifd, params);
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun /*
31*4882a593Smuzhiyun * Spread the image out so we only use the first 2KB of each 4KB
32*4882a593Smuzhiyun * region. This is a feature of the SPI format required by the Rockchip
33*4882a593Smuzhiyun * boot ROM. Its rationale is unknown.
34*4882a593Smuzhiyun */
35*4882a593Smuzhiyun if (params->vflag)
36*4882a593Smuzhiyun fprintf(stderr, "Spreading spi image from %u to %u\n",
37*4882a593Smuzhiyun size, params->file_size);
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun for (sector = size / RKSPI_SECT_LEN - 1; sector >= 0; sector--) {
40*4882a593Smuzhiyun debug("sector %u\n", sector);
41*4882a593Smuzhiyun memmove(buf + sector * RKSPI_SECT_LEN * 2,
42*4882a593Smuzhiyun buf + sector * RKSPI_SECT_LEN,
43*4882a593Smuzhiyun RKSPI_SECT_LEN);
44*4882a593Smuzhiyun memset(buf + sector * RKSPI_SECT_LEN * 2 + RKSPI_SECT_LEN,
45*4882a593Smuzhiyun '\0', RKSPI_SECT_LEN);
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun
rkspi_check_image_type(uint8_t type)49*4882a593Smuzhiyun static int rkspi_check_image_type(uint8_t type)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun if (type == IH_TYPE_RKSPI)
52*4882a593Smuzhiyun return EXIT_SUCCESS;
53*4882a593Smuzhiyun else
54*4882a593Smuzhiyun return EXIT_FAILURE;
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun /*
58*4882a593Smuzhiyun * The SPI payload needs to make space for odd half-sector layout used in flash
59*4882a593Smuzhiyun * (i.e. only the first 2K of each 4K sector is used).
60*4882a593Smuzhiyun */
rkspi_vrec_header(struct image_tool_params * params,struct image_type_params * tparams)61*4882a593Smuzhiyun static int rkspi_vrec_header(struct image_tool_params *params,
62*4882a593Smuzhiyun struct image_type_params *tparams)
63*4882a593Smuzhiyun {
64*4882a593Smuzhiyun rkcommon_vrec_header(params, tparams);
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun /*
67*4882a593Smuzhiyun * Converting to the SPI format (i.e. splitting each 4K page into two
68*4882a593Smuzhiyun * 2K subpages and then padding these 2K pages up to take a complete
69*4882a593Smuzhiyun * 4K sector again) which will double the image size.
70*4882a593Smuzhiyun */
71*4882a593Smuzhiyun params->file_size = ROUND(params->file_size, RKSPI_SECT_LEN) << 1;
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun /* Ignoring pad len, since we are using our own copy_image() */
74*4882a593Smuzhiyun return 0;
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun /*
78*4882a593Smuzhiyun * rk_spi parameters
79*4882a593Smuzhiyun */
80*4882a593Smuzhiyun U_BOOT_IMAGE_TYPE(
81*4882a593Smuzhiyun rkspi,
82*4882a593Smuzhiyun "Rockchip SPI Boot Image support",
83*4882a593Smuzhiyun 0,
84*4882a593Smuzhiyun NULL,
85*4882a593Smuzhiyun rkcommon_check_params,
86*4882a593Smuzhiyun rkcommon_verify_header,
87*4882a593Smuzhiyun rkcommon_print_header,
88*4882a593Smuzhiyun rkspi_set_header,
89*4882a593Smuzhiyun NULL,
90*4882a593Smuzhiyun rkspi_check_image_type,
91*4882a593Smuzhiyun NULL,
92*4882a593Smuzhiyun rkspi_vrec_header
93*4882a593Smuzhiyun );
94