[people/ms/u-boot.git] / tools / rkcommon.c

/*
 * (C) Copyright 2015 Google,  Inc
 * Written by Simon Glass <sjg@chromium.org>
 *
 * (C) 2017 Theobroma Systems Design und Consulting GmbH
 *
 * SPDX-License-Identifier:	GPL-2.0+
 *
 * 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)
 * @spl_boot0:          A new-style (ARM_SOC_BOOT0_HOOK) image that should
 *                      have the boot magic (e.g. 'RK33') written to its first
 *                      word.
 */

struct spl_info {
	const char *imagename;
	const char *spl_hdr;
	const uint32_t spl_size;
	const bool spl_rc4;
	const bool spl_boot0;
};

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

bool rkcommon_spl_is_boot0(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_boot0;
}

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.
	 *
	 * Depending on this, the header is either 0x800 (if this is a
	 * 'boot0'-style payload, which has reserved 4 bytes at the
	 * beginning for the 'spl_name' and expects us to overwrite
	 * its first 4 bytes) or 0x804 bytes in length.
	 */
	if (rkcommon_spl_is_boot0(params))
		tparams->header_size = RK_SPL_HDR_START;
	else
		tparams->header_size = RK_SPL_HDR_START + 4;

	/* 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
a131c1f4 SG	1	/*
	2	* (C) Copyright 2015 Google, Inc
	3	* Written by Simon Glass <sjg@chromium.org>
	4	*
2fb371ff PT	5	* (C) 2017 Theobroma Systems Design und Consulting GmbH
2fb371ff PT	6	*
a131c1f4 SG	7	* SPDX-License-Identifier: GPL-2.0+
	8	*
	9	* Helper functions for Rockchip images
	10	*/
	11
	12	#include "imagetool.h"
	13	#include <image.h>
	14	#include <rc4.h>
	15	#include "mkimage.h"
	16	#include "rkcommon.h"
	17
a1a2dfb8 PT	18	#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
a1a2dfb8 PT	19
a131c1f4 SG	20	enum {
	21	RK_SIGNATURE = 0x0ff0aa55,
	22	};
	23
	24	/**
	25	* struct header0_info - header block for boot ROM
	26	*
	27	* This is stored at SD card block 64 (where each block is 512 bytes, or at
	28	* the start of SPI flash. It is encoded with RC4.
	29	*
	30	* @signature: Signature (must be RKSD_SIGNATURE)
	31	* @disable_rc4: 0 to use rc4 for boot image, 1 to use plain binary
3641339e	32	* @init_offset: Offset in blocks of the SPL code from this header
a131c1f4 SG	33	* block. E.g. 4 means 2KB after the start of this header.
	34	* Other fields are not used by U-Boot
	35	*/
	36	struct header0_info {
	37	uint32_t signature;
	38	uint8_t reserved[4];
	39	uint32_t disable_rc4;
3641339e JC	40	uint16_t init_offset;
	41	uint8_t reserved1[492];
	42	uint16_t init_size;
	43	uint16_t init_boot_size;
a131c1f4 SG	44	uint8_t reserved2[2];
	45	};
	46
111bcc4f PT	47	/**
	48	* struct header1_info
	49	*/
	50	struct header1_info {
	51	uint32_t magic;
111bcc4f PT	52	};
111bcc4f PT	53
7bf274b9 JC	54	/**
	55	* struct spl_info - spl info for each chip
	56	*
	57	* @imagename: Image name(passed by "mkimage -n")
	58	* @spl_hdr: Boot ROM requires a 4-bytes spl header
	59	* @spl_size: Spl size(include extra 4-bytes spl header)
cfbcdade	60	* @spl_rc4: RC4 encode the SPL binary (same key as header)
30827756 PT	61	* @spl_boot0: A new-style (ARM_SOC_BOOT0_HOOK) image that should
	62	* have the boot magic (e.g. 'RK33') written to its first
	63	* word.
7bf274b9	64	*/
111bcc4f	65
7bf274b9 JC	66	struct spl_info {
	67	const char *imagename;
	68	const char *spl_hdr;
	69	const uint32_t spl_size;
cfbcdade	70	const bool spl_rc4;
30827756	71	const bool spl_boot0;
7bf274b9 JC	72	};
	73
	74	static struct spl_info spl_infos[] = {
111bcc4f PT	75	{ "rk3036", "RK30", 0x1000, false, false },
	76	{ "rk3188", "RK31", 0x8000 - 0x800, true, false },
	77	{ "rk3288", "RK32", 0x8000, false, false },
68d12600	78	{ "rk3328", "RK32", 0x8000 - 0x1000, false, false },
915e0981	79	{ "rk3399", "RK33", 0x30000 - 0x2000, false, true },
79fa1573	80	{ "rv1108", "RK11", 0x1800, false, false},
7bf274b9 JC	81	};
7bf274b9 JC	82
a131c1f4 SG	83	static unsigned char rc4_key[16] = {
	84	124, 78, 3, 4, 85, 5, 9, 7,
	85	45, 44, 123, 56, 23, 13, 23, 17
	86	};
	87
7bf274b9 JC	88	static struct spl_info rkcommon_get_spl_info(char imagename)
	89	{
	90	int i;
	91
24aae93f PT	92	if (!imagename)
	93	return NULL;
	94
7bf274b9 JC	95	for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
	96	if (!strncmp(imagename, spl_infos[i].imagename, 6))
	97	return spl_infos + i;
	98
	99	return NULL;
	100	}
	101
	102	int rkcommon_check_params(struct image_tool_params *params)
	103	{
	104	int i;
	105
	106	if (rkcommon_get_spl_info(params->imagename) != NULL)
24aae93f PT	107	return EXIT_SUCCESS;
	108
	109	/*
	110	* If this is a operation (list or extract), the don't require
	111	* imagename to be set.
	112	*/
	113	if (params->lflag \|\| params->iflag)
	114	return EXIT_SUCCESS;
7bf274b9 JC	115
7bf274b9 JC	116	fprintf(stderr, "ERROR: imagename (%s) is not supported!\n",
24aae93f	117	params->imagename ? params->imagename : "NULL");
7bf274b9 JC	118
	119	fprintf(stderr, "Available imagename:");
	120	for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
	121	fprintf(stderr, "\t%s", spl_infos[i].imagename);
	122	fprintf(stderr, "\n");
	123
24aae93f	124	return EXIT_FAILURE;
7bf274b9 JC	125	}
	126
	127	const char rkcommon_get_spl_hdr(struct image_tool_params params)
	128	{
	129	struct spl_info *info = rkcommon_get_spl_info(params->imagename);
	130
	131	/*
	132	* info would not be NULL, because of we checked params before.
	133	*/
	134	return info->spl_hdr;
	135	}
	136
30827756 PT	137
30827756 PT	138	int rkcommon_get_spl_size(struct image_tool_params *params)
111bcc4f PT	139	{
	140	struct spl_info *info = rkcommon_get_spl_info(params->imagename);
	141
	142	/*
	143	* info would not be NULL, because of we checked params before.
	144	*/
30827756	145	return info->spl_size;
111bcc4f PT	146	}
111bcc4f PT	147
30827756	148	bool rkcommon_need_rc4_spl(struct image_tool_params *params)
7bf274b9 JC	149	{
	150	struct spl_info *info = rkcommon_get_spl_info(params->imagename);
	151
	152	/*
	153	* info would not be NULL, because of we checked params before.
	154	*/
30827756	155	return info->spl_rc4;
7bf274b9 JC	156	}
7bf274b9 JC	157
30827756	158	bool rkcommon_spl_is_boot0(struct image_tool_params *params)
cfbcdade HS	159	{
	160	struct spl_info *info = rkcommon_get_spl_info(params->imagename);
	161
	162	/*
	163	* info would not be NULL, because of we checked params before.
	164	*/
30827756	165	return info->spl_boot0;
cfbcdade HS	166	}
cfbcdade HS	167
111bcc4f PT	168	static void rkcommon_set_header0(void *buf, uint file_size,
111bcc4f PT	169	struct image_tool_params *params)
a131c1f4	170	{
111bcc4f	171	struct header0_info *hdr = buf;
a131c1f4	172
111bcc4f	173	memset(buf, '\0', RK_INIT_OFFSET * RK_BLK_SIZE);
a131c1f4	174	hdr->signature = RK_SIGNATURE;
cfbcdade	175	hdr->disable_rc4 = !rkcommon_need_rc4_spl(params);
3641339e	176	hdr->init_offset = RK_INIT_OFFSET;
a131c1f4	177
a1a2dfb8 PT	178	hdr->init_size = DIV_ROUND_UP(file_size, RK_BLK_SIZE);
	179	/*
	180	* The init_size has to be a multiple of 4 blocks (i.e. of 2K)
	181	* or the BootROM will not boot the image.
	182	*
	183	* Note: To verify that this is not a legacy constraint, we
	184	* rechecked this against the RK3399 BootROM.
	185	*/
	186	hdr->init_size = ROUND(hdr->init_size, 4);
	187	/*
a1c29d4b PT	188	* init_boot_size needs to be set, as it is read by the BootROM
	189	* to determine the size of the next-stage bootloader (e.g. U-Boot
	190	* proper), when used with the back-to-bootrom functionality.
	191	*
	192	* see https://lists.denx.de/pipermail/u-boot/2017-May/293267.html
	193	* for a more detailed explanation by Andy Yan
a1a2dfb8	194	*/
a1c29d4b	195	hdr->init_boot_size = hdr->init_size + RK_MAX_BOOT_SIZE / RK_BLK_SIZE;
a131c1f4 SG	196
a131c1f4 SG	197	rc4_encode(buf, RK_BLK_SIZE, rc4_key);
111bcc4f PT	198	}
	199
	200	int rkcommon_set_header(void *buf, uint file_size,
	201	struct image_tool_params *params)
	202	{
	203	struct header1_info *hdr = buf + RK_SPL_HDR_START;
	204
	205	if (file_size > rkcommon_get_spl_size(params))
	206	return -ENOSPC;
	207
	208	rkcommon_set_header0(buf, file_size, params);
	209
2fb371ff	210	/* Set up the SPL name (i.e. copy spl_hdr over) */
111bcc4f PT	211	memcpy(&hdr->magic, rkcommon_get_spl_hdr(params), RK_SPL_HDR_SIZE);
111bcc4f PT	212
111bcc4f PT	213	if (rkcommon_need_rc4_spl(params))
	214	rkcommon_rc4_encode_spl(buf, RK_SPL_HDR_START,
	215	params->file_size - RK_SPL_HDR_START);
a131c1f4 SG	216
	217	return 0;
	218	}
cfbcdade	219
2fb371ff PT	220	static inline unsigned rkcommon_offset_to_spi(unsigned offset)
	221	{
	222	/*
	223	* While SD/MMC images use a flat addressing, SPI images are padded
	224	* to use the first 2K of every 4K sector only.
	225	*/
	226	return ((offset & ~0x7ff) << 1) + (offset & 0x7ff);
	227	}
	228
2fb371ff PT	229	static int rkcommon_parse_header(const void buf, struct header0_info header0,
	230	struct spl_info **spl_info)
	231	{
	232	unsigned hdr1_offset;
	233	struct header1_info hdr1_sdmmc, hdr1_spi;
	234	int i;
	235
	236	if (spl_info)
	237	*spl_info = NULL;
	238
	239	/*
	240	* The first header (hdr0) is always RC4 encoded, so try to decrypt
	241	* with the well-known key.
	242	*/
	243	memcpy((void *)header0, buf, sizeof(struct header0_info));
	244	rc4_encode((void *)header0, sizeof(struct header0_info), rc4_key);
	245
	246	if (header0->signature != RK_SIGNATURE)
	247	return -EPROTO;
	248
	249	/* We don't support RC4 encoded image payloads here, yet... */
	250	if (header0->disable_rc4 == 0)
	251	return -ENOSYS;
	252
	253	hdr1_offset = header0->init_offset * RK_BLK_SIZE;
	254	hdr1_sdmmc = (struct header1_info *)(buf + hdr1_offset);
	255	hdr1_spi = (struct header1_info *)(buf +
	256	rkcommon_offset_to_spi(hdr1_offset));
	257
	258	for (i = 0; i < ARRAY_SIZE(spl_infos); i++) {
	259	if (!memcmp(&hdr1_sdmmc->magic, spl_infos[i].spl_hdr, 4)) {
	260	if (spl_info)
	261	*spl_info = &spl_infos[i];
	262	return IH_TYPE_RKSD;
	263	} else if (!memcmp(&hdr1_spi->magic, spl_infos[i].spl_hdr, 4)) {
	264	if (spl_info)
	265	*spl_info = &spl_infos[i];
	266	return IH_TYPE_RKSPI;
	267	}
	268	}
	269
	270	return -1;
	271	}
	272
	273	int rkcommon_verify_header(unsigned char *buf, int size,
	274	struct image_tool_params *params)
	275	{
	276	struct header0_info header0;
	277	struct spl_info img_spl_info, spl_info;
	278	int ret;
	279
	280	ret = rkcommon_parse_header(buf, &header0, &img_spl_info);
	281
	282	/* If this is the (unimplemented) RC4 case, then rewrite the result */
	283	if (ret == -ENOSYS)
	284	return 0;
	285
	286	if (ret < 0)
	287	return ret;
	288
	289	/*
	290	* If no 'imagename' is specified via the commandline (e.g. if this is
	291	* 'dumpimage -l' w/o any further constraints), we accept any spl_info.
	292	*/
293	if (params->imagename == NULL)
294	return 0;
295
296	/* Match the 'imagename' against the 'spl_hdr' found */
297	spl_info = rkcommon_get_spl_info(params->imagename);
298	if (spl_info && img_spl_info)
299	return strcmp(spl_info->spl_hdr, img_spl_info->spl_hdr);
300
301	return -ENOENT;
302	}
303
304	void rkcommon_print_header(const void *buf)
305	{
306	struct header0_info header0;
307	struct spl_info *spl_info;
308	uint8_t image_type;
309	int ret;
310
311	ret = rkcommon_parse_header(buf, &header0, &spl_info);
312
313	/* If this is the (unimplemented) RC4 case, then fail silently */
314	if (ret == -ENOSYS)
315	return;
316
317	if (ret < 0) {
318	fprintf(stderr, "Error: image verification failed\n");
319	return;
320	}
321
322	image_type = ret;
323
324	printf("Image Type: Rockchip %s (%s) boot image\n",
325	spl_info->spl_hdr,
326	(image_type == IH_TYPE_RKSD) ? "SD/MMC" : "SPI");
327	printf("Data Size: %d bytes\n", header0.init_size * RK_BLK_SIZE);
328	}
329
cfbcdade HS	330	void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size)
	331	{
	332	unsigned int remaining = size;
	333
	334	while (remaining > 0) {
	335	int step = (remaining > RK_BLK_SIZE) ? RK_BLK_SIZE : remaining;
	336
	337	rc4_encode(buf + offset, step, rc4_key);
	338	offset += RK_BLK_SIZE;
	339	remaining -= step;
	340	}
	341	}
111bcc4f	342
366aad4d PT	343	int rkcommon_vrec_header(struct image_tool_params *params,
	344	struct image_type_params *tparams,
	345	unsigned int alignment)
111bcc4f	346	{
366aad4d PT	347	unsigned int unpadded_size;
	348	unsigned int padded_size;
	349
111bcc4f PT	350	/*
	351	* The SPL image looks as follows:
	352	*
	353	* 0x0 header0 (see rkcommon.c)
	354	* 0x800 spl_name ('RK30', ..., 'RK33')
ea3729e2 PT	355	* (start of the payload for AArch64 payloads: we expect the
	356	* first 4 bytes to be available for overwriting with our
	357	* spl_name)
111bcc4f	358	* 0x804 first instruction to be executed
ea3729e2	359	* (start of the image/payload for 32bit payloads)
111bcc4f	360	*
ea3729e2 PT	361	* For AArch64 (ARMv8) payloads, natural alignment (8-bytes) is
	362	* required for its sections (so the image we receive needs to
	363	* have the first 4 bytes reserved for the spl_name). Reserving
	364	* these 4 bytes is done using the BOOT0_HOOK infrastructure.
111bcc4f	365	*
ea3729e2 PT	366	* Depending on this, the header is either 0x800 (if this is a
	367	* 'boot0'-style payload, which has reserved 4 bytes at the
	368	* beginning for the 'spl_name' and expects us to overwrite
	369	* its first 4 bytes) or 0x804 bytes in length.
111bcc4f	370	*/
30827756 PT	371	if (rkcommon_spl_is_boot0(params))
30827756 PT	372	tparams->header_size = RK_SPL_HDR_START;
111bcc4f PT	373	else
	374	tparams->header_size = RK_SPL_HDR_START + 4;
	375
	376	/* Allocate, clear and install the header */
	377	tparams->hdr = malloc(tparams->header_size);
22929bec SG	378	if (!tparams->hdr)
22929bec SG	379	return -ENOMEM;
111bcc4f	380	memset(tparams->hdr, 0, tparams->header_size);
366aad4d PT	381
	382	/*
	383	* If someone passed in 0 for the alignment, we'd better handle
	384	* it correctly...
	385	*/
	386	if (!alignment)
	387	alignment = 1;
	388
	389	unpadded_size = tparams->header_size + params->file_size;
	390	padded_size = ROUND(unpadded_size, alignment);
	391
	392	return padded_size - unpadded_size;
111bcc4f	393	}