[thirdparty/u-boot.git] / tools / rkcommon.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2015 Google,  Inc
 * Written by Simon Glass <sjg@chromium.org>
 *
 * (C) 2017 Theobroma Systems Design und Consulting GmbH
 *
 * Helper functions for Rockchip images
 */

#include "imagetool.h"
#include <image.h>
#include <rc4.h>
#include "mkimage.h"
#include "rkcommon.h"

#define DIV_ROUND_UP(n, d)	(((n) + (d) - 1) / (d))

enum {
	RK_SIGNATURE		= 0x0ff0aa55,
};

/**
 * struct header0_info - header block for boot ROM
 *
 * This is stored at SD card block 64 (where each block is 512 bytes, or at
 * the start of SPI flash. It is encoded with RC4.
 *
 * @signature:		Signature (must be RKSD_SIGNATURE)
 * @disable_rc4:	0 to use rc4 for boot image,  1 to use plain binary
 * @init_offset:	Offset in blocks of the SPL code from this header
 *			block. E.g. 4 means 2KB after the start of this header.
 * Other fields are not used by U-Boot
 */
struct header0_info {
	uint32_t signature;
	uint8_t reserved[4];
	uint32_t disable_rc4;
	uint16_t init_offset;
	uint8_t reserved1[492];
	uint16_t init_size;
	uint16_t init_boot_size;
	uint8_t reserved2[2];
};

/**
 * struct header1_info
 */
struct header1_info {
	uint32_t magic;
};

/**
 * struct spl_info - spl info for each chip
 *
 * @imagename:		Image name(passed by "mkimage -n")
 * @spl_hdr:		Boot ROM requires a 4-bytes spl header
 * @spl_size:		Spl size(include extra 4-bytes spl header)
 * @spl_rc4:		RC4 encode the SPL binary (same key as header)
 */

struct spl_info {
	const char *imagename;
	const char *spl_hdr;
	const uint32_t spl_size;
	const bool spl_rc4;
};

static struct spl_info spl_infos[] = {
	{ "rk3036", "RK30", 0x1000, false },
	{ "rk3128", "RK31", 0x1800, false },
	{ "rk3188", "RK31", 0x8000 - 0x800, true },
	{ "rk322x", "RK32", 0x8000 - 0x1000, false },
	{ "rk3288", "RK32", 0x8000, false },
	{ "rk3328", "RK32", 0x8000 - 0x1000, false },
	{ "rk3368", "RK33", 0x8000 - 0x1000, false },
	{ "rk3399", "RK33", 0x30000 - 0x2000, false },
	{ "rv1108", "RK11", 0x1800, false },
};

static unsigned char rc4_key[16] = {
	124, 78, 3, 4, 85, 5, 9, 7,
	45, 44, 123, 56, 23, 13, 23, 17
};

static struct spl_info *rkcommon_get_spl_info(char *imagename)
{
	int i;

	if (!imagename)
		return NULL;

	for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
		if (!strncmp(imagename, spl_infos[i].imagename, 6))
			return spl_infos + i;

	return NULL;
}

int rkcommon_check_params(struct image_tool_params *params)
{
	int i;

	if (rkcommon_get_spl_info(params->imagename) != NULL)
		return EXIT_SUCCESS;

	/*
	 * If this is a operation (list or extract), the don't require
	 * imagename to be set.
	 */
	if (params->lflag || params->iflag)
		return EXIT_SUCCESS;

	fprintf(stderr, "ERROR: imagename (%s) is not supported!\n",
		params->imagename ? params->imagename : "NULL");

	fprintf(stderr, "Available imagename:");
	for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
		fprintf(stderr, "\t%s", spl_infos[i].imagename);
	fprintf(stderr, "\n");

	return EXIT_FAILURE;
}

const char *rkcommon_get_spl_hdr(struct image_tool_params *params)
{
	struct spl_info *info = rkcommon_get_spl_info(params->imagename);

	/*
	 * info would not be NULL, because of we checked params before.
	 */
	return info->spl_hdr;
}


int rkcommon_get_spl_size(struct image_tool_params *params)
{
	struct spl_info *info = rkcommon_get_spl_info(params->imagename);

	/*
	 * info would not be NULL, because of we checked params before.
	 */
	return info->spl_size;
}

bool rkcommon_need_rc4_spl(struct image_tool_params *params)
{
	struct spl_info *info = rkcommon_get_spl_info(params->imagename);

	/*
	 * info would not be NULL, because of we checked params before.
	 */
	return info->spl_rc4;
}

static void rkcommon_set_header0(void *buf, uint file_size,
				 struct image_tool_params *params)
{
	struct header0_info *hdr = buf;

	memset(buf, '\0', RK_INIT_OFFSET * RK_BLK_SIZE);
	hdr->signature = RK_SIGNATURE;
	hdr->disable_rc4 = !rkcommon_need_rc4_spl(params);
	hdr->init_offset = RK_INIT_OFFSET;

	hdr->init_size = DIV_ROUND_UP(file_size, RK_BLK_SIZE);
	/*
	 * The init_size has to be a multiple of 4 blocks (i.e. of 2K)
	 * or the BootROM will not boot the image.
	 *
	 * Note: To verify that this is not a legacy constraint, we
	 *       rechecked this against the RK3399 BootROM.
	 */
	hdr->init_size = ROUND(hdr->init_size, 4);
	/*
	 * init_boot_size needs to be set, as it is read by the BootROM
	 * to determine the size of the next-stage bootloader (e.g. U-Boot
	 * proper), when used with the back-to-bootrom functionality.
	 *
	 * see https://lists.denx.de/pipermail/u-boot/2017-May/293267.html
	 * for a more detailed explanation by Andy Yan
	 */
	hdr->init_boot_size = hdr->init_size + RK_MAX_BOOT_SIZE / RK_BLK_SIZE;

	rc4_encode(buf, RK_BLK_SIZE, rc4_key);
}

int rkcommon_set_header(void *buf, uint file_size,
			struct image_tool_params *params)
{
	struct header1_info *hdr = buf + RK_SPL_HDR_START;

	if (file_size > rkcommon_get_spl_size(params))
		return -ENOSPC;

	rkcommon_set_header0(buf, file_size, params);

	/* Set up the SPL name (i.e. copy spl_hdr over) */
	memcpy(&hdr->magic, rkcommon_get_spl_hdr(params), RK_SPL_HDR_SIZE);

	if (rkcommon_need_rc4_spl(params))
		rkcommon_rc4_encode_spl(buf, RK_SPL_HDR_START,
					params->file_size - RK_SPL_HDR_START);

	return 0;
}

static inline unsigned rkcommon_offset_to_spi(unsigned offset)
{
	/*
	 * While SD/MMC images use a flat addressing, SPI images are padded
	 * to use the first 2K of every 4K sector only.
	 */
	return ((offset & ~0x7ff) << 1) + (offset & 0x7ff);
}

static int rkcommon_parse_header(const void *buf, struct header0_info *header0,
				 struct spl_info **spl_info)
{
	unsigned hdr1_offset;
	struct header1_info *hdr1_sdmmc, *hdr1_spi;
	int i;

	if (spl_info)
		*spl_info = NULL;

	/*
	 * The first header (hdr0) is always RC4 encoded, so try to decrypt
	 * with the well-known key.
	 */
	memcpy((void *)header0, buf, sizeof(struct header0_info));
	rc4_encode((void *)header0, sizeof(struct header0_info), rc4_key);

	if (header0->signature != RK_SIGNATURE)
		return -EPROTO;

	/* We don't support RC4 encoded image payloads here, yet... */
	if (header0->disable_rc4 == 0)
		return -ENOSYS;

	hdr1_offset = header0->init_offset * RK_BLK_SIZE;
	hdr1_sdmmc = (struct header1_info *)(buf + hdr1_offset);
	hdr1_spi = (struct header1_info *)(buf +
					   rkcommon_offset_to_spi(hdr1_offset));

	for (i = 0; i < ARRAY_SIZE(spl_infos); i++) {
		if (!memcmp(&hdr1_sdmmc->magic, spl_infos[i].spl_hdr, 4)) {
			if (spl_info)
				*spl_info = &spl_infos[i];
			return IH_TYPE_RKSD;
		} else if (!memcmp(&hdr1_spi->magic, spl_infos[i].spl_hdr, 4)) {
			if (spl_info)
				*spl_info = &spl_infos[i];
			return IH_TYPE_RKSPI;
		}
	}

	return -1;
}

int rkcommon_verify_header(unsigned char *buf, int size,
			   struct image_tool_params *params)
{
	struct header0_info header0;
	struct spl_info *img_spl_info, *spl_info;
	int ret;

	ret = rkcommon_parse_header(buf, &header0, &img_spl_info);

	/* If this is the (unimplemented) RC4 case, then rewrite the result */
	if (ret == -ENOSYS)
		return 0;

	if (ret < 0)
		return ret;

	/*
	 * If no 'imagename' is specified via the commandline (e.g. if this is
	 * 'dumpimage -l' w/o any further constraints), we accept any spl_info.
	 */
	if (params->imagename == NULL)
		return 0;

	/* Match the 'imagename' against the 'spl_hdr' found */
	spl_info = rkcommon_get_spl_info(params->imagename);
	if (spl_info && img_spl_info)
		return strcmp(spl_info->spl_hdr, img_spl_info->spl_hdr);

	return -ENOENT;
}

void rkcommon_print_header(const void *buf)
{
	struct header0_info header0;
	struct spl_info *spl_info;
	uint8_t image_type;
	int ret;

	ret = rkcommon_parse_header(buf, &header0, &spl_info);

	/* If this is the (unimplemented) RC4 case, then fail silently */
	if (ret == -ENOSYS)
		return;

	if (ret < 0) {
		fprintf(stderr, "Error: image verification failed\n");
		return;
	}

	image_type = ret;

	printf("Image Type:   Rockchip %s (%s) boot image\n",
	       spl_info->spl_hdr,
	       (image_type == IH_TYPE_RKSD) ? "SD/MMC" : "SPI");
	printf("Data Size:    %d bytes\n", header0.init_size * RK_BLK_SIZE);
}

void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size)
{
	unsigned int remaining = size;

	while (remaining > 0) {
		int step = (remaining > RK_BLK_SIZE) ? RK_BLK_SIZE : remaining;

		rc4_encode(buf + offset, step, rc4_key);
		offset += RK_BLK_SIZE;
		remaining -= step;
	}
}

int rkcommon_vrec_header(struct image_tool_params *params,
			 struct image_type_params *tparams,
			 unsigned int alignment)
{
	unsigned int  unpadded_size;
	unsigned int  padded_size;

	/*
	 * The SPL image looks as follows:
	 *
	 * 0x0    header0 (see rkcommon.c)
	 * 0x800  spl_name ('RK30', ..., 'RK33')
	 *        (start of the payload for AArch64 payloads: we expect the
	 *        first 4 bytes to be available for overwriting with our
	 *        spl_name)
	 * 0x804  first instruction to be executed
	 *        (start of the image/payload for 32bit payloads)
	 *
	 * For AArch64 (ARMv8) payloads, natural alignment (8-bytes) is
	 * required for its sections (so the image we receive needs to
	 * have the first 4 bytes reserved for the spl_name).  Reserving
	 * these 4 bytes is done using the BOOT0_HOOK infrastructure.
	 *
	 * The header is always at 0x800 (as we now use a payload
	 * prepadded using the boot0 hook for all targets): the first
	 * 4 bytes of these images can safely be overwritten using the
	 * boot magic.
	 */
	tparams->header_size = RK_SPL_HDR_START;

	/* Allocate, clear and install the header */
	tparams->hdr = malloc(tparams->header_size);
	if (!tparams->hdr)
		return -ENOMEM;
	memset(tparams->hdr, 0, tparams->header_size);

	/*
	 * If someone passed in 0 for the alignment, we'd better handle
	 * it correctly...
	 */
	if (!alignment)
		alignment = 1;

	unpadded_size = tparams->header_size + params->file_size;
	padded_size = ROUND(unpadded_size, alignment);

	return padded_size - unpadded_size;
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
a131c1f4 SG	2	/*
	3	* (C) Copyright 2015 Google, Inc
	4	* Written by Simon Glass <sjg@chromium.org>
	5	*
2fb371ff PT	6	* (C) 2017 Theobroma Systems Design und Consulting GmbH
2fb371ff PT	7	*
a131c1f4 SG	8	* Helper functions for Rockchip images
	9	*/
	10
	11	#include "imagetool.h"
	12	#include <image.h>
	13	#include <rc4.h>
	14	#include "mkimage.h"
	15	#include "rkcommon.h"
	16
a1a2dfb8 PT	17	#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
a1a2dfb8 PT	18
a131c1f4 SG	19	enum {
	20	RK_SIGNATURE = 0x0ff0aa55,
	21	};
	22
	23	/**
	24	* struct header0_info - header block for boot ROM
	25	*
	26	* This is stored at SD card block 64 (where each block is 512 bytes, or at
	27	* the start of SPI flash. It is encoded with RC4.
	28	*
	29	* @signature: Signature (must be RKSD_SIGNATURE)
	30	* @disable_rc4: 0 to use rc4 for boot image, 1 to use plain binary
3641339e	31	* @init_offset: Offset in blocks of the SPL code from this header
a131c1f4 SG	32	* block. E.g. 4 means 2KB after the start of this header.
	33	* Other fields are not used by U-Boot
	34	*/
	35	struct header0_info {
	36	uint32_t signature;
	37	uint8_t reserved[4];
	38	uint32_t disable_rc4;
3641339e JC	39	uint16_t init_offset;
	40	uint8_t reserved1[492];
	41	uint16_t init_size;
	42	uint16_t init_boot_size;
a131c1f4 SG	43	uint8_t reserved2[2];
	44	};
	45
111bcc4f PT	46	/**
	47	* struct header1_info
	48	*/
	49	struct header1_info {
	50	uint32_t magic;
111bcc4f PT	51	};
111bcc4f PT	52
7bf274b9 JC	53	/**
	54	* struct spl_info - spl info for each chip
	55	*
	56	* @imagename: Image name(passed by "mkimage -n")
	57	* @spl_hdr: Boot ROM requires a 4-bytes spl header
	58	* @spl_size: Spl size(include extra 4-bytes spl header)
cfbcdade	59	* @spl_rc4: RC4 encode the SPL binary (same key as header)
7bf274b9	60	*/
111bcc4f	61
7bf274b9 JC	62	struct spl_info {
	63	const char *imagename;
	64	const char *spl_hdr;
	65	const uint32_t spl_size;
cfbcdade	66	const bool spl_rc4;
7bf274b9 JC	67	};
	68
	69	static struct spl_info spl_infos[] = {
95d363cc PT	70	{ "rk3036", "RK30", 0x1000, false },
	71	{ "rk3128", "RK31", 0x1800, false },
	72	{ "rk3188", "RK31", 0x8000 - 0x800, true },
	73	{ "rk322x", "RK32", 0x8000 - 0x1000, false },
	74	{ "rk3288", "RK32", 0x8000, false },
	75	{ "rk3328", "RK32", 0x8000 - 0x1000, false },
	76	{ "rk3368", "RK33", 0x8000 - 0x1000, false },
	77	{ "rk3399", "RK33", 0x30000 - 0x2000, false },
	78	{ "rv1108", "RK11", 0x1800, false },
7bf274b9 JC	79	};
7bf274b9 JC	80
a131c1f4 SG	81	static unsigned char rc4_key[16] = {
	82	124, 78, 3, 4, 85, 5, 9, 7,
	83	45, 44, 123, 56, 23, 13, 23, 17
	84	};
	85
7bf274b9 JC	86	static struct spl_info rkcommon_get_spl_info(char imagename)
	87	{
	88	int i;
	89
24aae93f PT	90	if (!imagename)
	91	return NULL;
	92
7bf274b9 JC	93	for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
	94	if (!strncmp(imagename, spl_infos[i].imagename, 6))
	95	return spl_infos + i;
	96
	97	return NULL;
	98	}
	99
	100	int rkcommon_check_params(struct image_tool_params *params)
	101	{
	102	int i;
	103
	104	if (rkcommon_get_spl_info(params->imagename) != NULL)
24aae93f PT	105	return EXIT_SUCCESS;
	106
	107	/*
	108	* If this is a operation (list or extract), the don't require
	109	* imagename to be set.
	110	*/
	111	if (params->lflag \|\| params->iflag)
	112	return EXIT_SUCCESS;
7bf274b9 JC	113
7bf274b9 JC	114	fprintf(stderr, "ERROR: imagename (%s) is not supported!\n",
24aae93f	115	params->imagename ? params->imagename : "NULL");
7bf274b9 JC	116
	117	fprintf(stderr, "Available imagename:");
	118	for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
	119	fprintf(stderr, "\t%s", spl_infos[i].imagename);
	120	fprintf(stderr, "\n");
	121
24aae93f	122	return EXIT_FAILURE;
7bf274b9 JC	123	}
	124
	125	const char rkcommon_get_spl_hdr(struct image_tool_params params)
	126	{
	127	struct spl_info *info = rkcommon_get_spl_info(params->imagename);
	128
	129	/*
	130	* info would not be NULL, because of we checked params before.
	131	*/
	132	return info->spl_hdr;
	133	}
	134
30827756 PT	135
30827756 PT	136	int rkcommon_get_spl_size(struct image_tool_params *params)
111bcc4f PT	137	{
	138	struct spl_info *info = rkcommon_get_spl_info(params->imagename);
	139
	140	/*
	141	* info would not be NULL, because of we checked params before.
	142	*/
30827756	143	return info->spl_size;
111bcc4f PT	144	}
111bcc4f PT	145
30827756	146	bool rkcommon_need_rc4_spl(struct image_tool_params *params)
7bf274b9 JC	147	{
	148	struct spl_info *info = rkcommon_get_spl_info(params->imagename);
	149
	150	/*
	151	* info would not be NULL, because of we checked params before.
	152	*/
30827756	153	return info->spl_rc4;
7bf274b9 JC	154	}
7bf274b9 JC	155
111bcc4f PT	156	static void rkcommon_set_header0(void *buf, uint file_size,
111bcc4f PT	157	struct image_tool_params *params)
a131c1f4	158	{
111bcc4f	159	struct header0_info *hdr = buf;
a131c1f4	160
111bcc4f	161	memset(buf, '\0', RK_INIT_OFFSET * RK_BLK_SIZE);
a131c1f4	162	hdr->signature = RK_SIGNATURE;
cfbcdade	163	hdr->disable_rc4 = !rkcommon_need_rc4_spl(params);
3641339e	164	hdr->init_offset = RK_INIT_OFFSET;
a131c1f4	165
a1a2dfb8 PT	166	hdr->init_size = DIV_ROUND_UP(file_size, RK_BLK_SIZE);
	167	/*
	168	* The init_size has to be a multiple of 4 blocks (i.e. of 2K)
	169	* or the BootROM will not boot the image.
	170	*
	171	* Note: To verify that this is not a legacy constraint, we
	172	* rechecked this against the RK3399 BootROM.
	173	*/
	174	hdr->init_size = ROUND(hdr->init_size, 4);
	175	/*
a1c29d4b PT	176	* init_boot_size needs to be set, as it is read by the BootROM
	177	* to determine the size of the next-stage bootloader (e.g. U-Boot
	178	* proper), when used with the back-to-bootrom functionality.
	179	*
	180	* see https://lists.denx.de/pipermail/u-boot/2017-May/293267.html
	181	* for a more detailed explanation by Andy Yan
a1a2dfb8	182	*/
a1c29d4b	183	hdr->init_boot_size = hdr->init_size + RK_MAX_BOOT_SIZE / RK_BLK_SIZE;
a131c1f4 SG	184
a131c1f4 SG	185	rc4_encode(buf, RK_BLK_SIZE, rc4_key);
111bcc4f PT	186	}
	187
	188	int rkcommon_set_header(void *buf, uint file_size,
	189	struct image_tool_params *params)
	190	{
	191	struct header1_info *hdr = buf + RK_SPL_HDR_START;
	192
	193	if (file_size > rkcommon_get_spl_size(params))
	194	return -ENOSPC;
	195
	196	rkcommon_set_header0(buf, file_size, params);
	197
2fb371ff	198	/* Set up the SPL name (i.e. copy spl_hdr over) */
111bcc4f PT	199	memcpy(&hdr->magic, rkcommon_get_spl_hdr(params), RK_SPL_HDR_SIZE);
111bcc4f PT	200
111bcc4f PT	201	if (rkcommon_need_rc4_spl(params))
	202	rkcommon_rc4_encode_spl(buf, RK_SPL_HDR_START,
	203	params->file_size - RK_SPL_HDR_START);
a131c1f4 SG	204
	205	return 0;
	206	}
cfbcdade	207
2fb371ff PT	208	static inline unsigned rkcommon_offset_to_spi(unsigned offset)
	209	{
	210	/*
	211	* While SD/MMC images use a flat addressing, SPI images are padded
	212	* to use the first 2K of every 4K sector only.
	213	*/
	214	return ((offset & ~0x7ff) << 1) + (offset & 0x7ff);
	215	}
	216
2fb371ff PT	217	static int rkcommon_parse_header(const void buf, struct header0_info header0,
	218	struct spl_info **spl_info)
	219	{
	220	unsigned hdr1_offset;
	221	struct header1_info hdr1_sdmmc, hdr1_spi;
	222	int i;
	223
	224	if (spl_info)
	225	*spl_info = NULL;
	226
	227	/*
	228	* The first header (hdr0) is always RC4 encoded, so try to decrypt
	229	* with the well-known key.
	230	*/
	231	memcpy((void *)header0, buf, sizeof(struct header0_info));
	232	rc4_encode((void *)header0, sizeof(struct header0_info), rc4_key);
	233
	234	if (header0->signature != RK_SIGNATURE)
	235	return -EPROTO;
	236
	237	/* We don't support RC4 encoded image payloads here, yet... */
	238	if (header0->disable_rc4 == 0)
	239	return -ENOSYS;
	240
	241	hdr1_offset = header0->init_offset * RK_BLK_SIZE;
	242	hdr1_sdmmc = (struct header1_info *)(buf + hdr1_offset);
	243	hdr1_spi = (struct header1_info *)(buf +
	244	rkcommon_offset_to_spi(hdr1_offset));
	245
	246	for (i = 0; i < ARRAY_SIZE(spl_infos); i++) {
	247	if (!memcmp(&hdr1_sdmmc->magic, spl_infos[i].spl_hdr, 4)) {
	248	if (spl_info)
	249	*spl_info = &spl_infos[i];
	250	return IH_TYPE_RKSD;
	251	} else if (!memcmp(&hdr1_spi->magic, spl_infos[i].spl_hdr, 4)) {
	252	if (spl_info)
	253	*spl_info = &spl_infos[i];
	254	return IH_TYPE_RKSPI;
	255	}
	256	}
	257
	258	return -1;
	259	}
	260
	261	int rkcommon_verify_header(unsigned char *buf, int size,
	262	struct image_tool_params *params)
	263	{
	264	struct header0_info header0;
	265	struct spl_info img_spl_info, spl_info;
	266	int ret;
	267
	268	ret = rkcommon_parse_header(buf, &header0, &img_spl_info);
	269
	270	/* If this is the (unimplemented) RC4 case, then rewrite the result */
	271	if (ret == -ENOSYS)
	272	return 0;
	273
	274	if (ret < 0)
	275	return ret;
	276
	277	/*
	278	* If no 'imagename' is specified via the commandline (e.g. if this is
	279	* 'dumpimage -l' w/o any further constraints), we accept any spl_info.
	280	*/
281	if (params->imagename == NULL)
282	return 0;
283
284	/* Match the 'imagename' against the 'spl_hdr' found */
285	spl_info = rkcommon_get_spl_info(params->imagename);
286	if (spl_info && img_spl_info)
287	return strcmp(spl_info->spl_hdr, img_spl_info->spl_hdr);
288
289	return -ENOENT;
290	}
291
292	void rkcommon_print_header(const void *buf)
293	{
294	struct header0_info header0;
295	struct spl_info *spl_info;
296	uint8_t image_type;
297	int ret;
298
299	ret = rkcommon_parse_header(buf, &header0, &spl_info);
300
301	/* If this is the (unimplemented) RC4 case, then fail silently */
302	if (ret == -ENOSYS)
303	return;
304
305	if (ret < 0) {
306	fprintf(stderr, "Error: image verification failed\n");
307	return;
308	}
309
310	image_type = ret;
311
312	printf("Image Type: Rockchip %s (%s) boot image\n",
313	spl_info->spl_hdr,
314	(image_type == IH_TYPE_RKSD) ? "SD/MMC" : "SPI");
315	printf("Data Size: %d bytes\n", header0.init_size * RK_BLK_SIZE);
316	}
317
cfbcdade HS	318	void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size)
	319	{
	320	unsigned int remaining = size;
	321
	322	while (remaining > 0) {
	323	int step = (remaining > RK_BLK_SIZE) ? RK_BLK_SIZE : remaining;
	324
	325	rc4_encode(buf + offset, step, rc4_key);
	326	offset += RK_BLK_SIZE;
	327	remaining -= step;
	328	}
	329	}
111bcc4f	330
366aad4d PT	331	int rkcommon_vrec_header(struct image_tool_params *params,
	332	struct image_type_params *tparams,
	333	unsigned int alignment)
111bcc4f	334	{
366aad4d PT	335	unsigned int unpadded_size;
	336	unsigned int padded_size;
	337
111bcc4f PT	338	/*
	339	* The SPL image looks as follows:
	340	*
	341	* 0x0 header0 (see rkcommon.c)
	342	* 0x800 spl_name ('RK30', ..., 'RK33')
ea3729e2 PT	343	* (start of the payload for AArch64 payloads: we expect the
	344	* first 4 bytes to be available for overwriting with our
	345	* spl_name)
111bcc4f	346	* 0x804 first instruction to be executed
ea3729e2	347	* (start of the image/payload for 32bit payloads)
111bcc4f	348	*
ea3729e2 PT	349	* For AArch64 (ARMv8) payloads, natural alignment (8-bytes) is
	350	* required for its sections (so the image we receive needs to
	351	* have the first 4 bytes reserved for the spl_name). Reserving
	352	* these 4 bytes is done using the BOOT0_HOOK infrastructure.
111bcc4f	353	*
95d363cc PT	354	* The header is always at 0x800 (as we now use a payload
	355	* prepadded using the boot0 hook for all targets): the first
	356	* 4 bytes of these images can safely be overwritten using the
	357	* boot magic.
111bcc4f	358	*/
95d363cc	359	tparams->header_size = RK_SPL_HDR_START;
111bcc4f PT	360
	361	/* Allocate, clear and install the header */
	362	tparams->hdr = malloc(tparams->header_size);
22929bec SG	363	if (!tparams->hdr)
22929bec SG	364	return -ENOMEM;
111bcc4f	365	memset(tparams->hdr, 0, tparams->header_size);
366aad4d PT	366
	367	/*
	368	* If someone passed in 0 for the alignment, we'd better handle
	369	* it correctly...
	370	*/
	371	if (!alignment)
	372	alignment = 1;
	373
	374	unpadded_size = tparams->header_size + params->file_size;
	375	padded_size = ROUND(unpadded_size, alignment);
	376
	377	return padded_size - unpadded_size;
111bcc4f	378	}