1 files changed, 543 insertions, 0 deletions
diff --git a/roms/u-boot/tools/rkcommon.c b/roms/u-boot/tools/rkcommon.c
new file mode 100644
index 000000000..d55cd2c2d
--- /dev/null
+++ b/roms/u-boot/tools/rkcommon.c
@@ -0,0 +1,543 @@
+// 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"
+
+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[] = {
+	{ "px30", "RK33", 0x2800, false },
+	{ "rk3036", "RK30", 0x1000, false },
+	{ "rk3128", "RK31", 0x1800, false },
+	{ "rk3188", "RK31", 0x8000 - 0x800, true },
+	{ "rk322x", "RK32", 0x8000 - 0x1000, false },
+	{ "rk3288", "RK32", 0x8000, false },
+	{ "rk3308", "RK33", 0x40000 - 0x1000, false},
+	{ "rk3328", "RK32", 0x8000 - 0x1000, false },
+	{ "rk3368", "RK33", 0x8000 - 0x1000, false },
+	{ "rk3399", "RK33", 0x30000 - 0x2000, false },
+	{ "rv1108", "RK11", 0x1800, false },
+};
+
+/**
+ * struct spl_params - spl params parsed in check_params()
+ *
+ * @init_file:		Init data file path
+ * @init_size:		Aligned size of init data in bytes
+ * @boot_file:		Boot data file path
+ * @boot_size:		Aligned size of boot data in bytes
+ */
+
+struct spl_params {
+	char *init_file;
+	uint32_t init_size;
+	char *boot_file;
+	uint32_t boot_size;
+};
+
+static struct spl_params spl_params = { 0 };
+
+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;
+}
+
+static int rkcommon_get_aligned_size(struct image_tool_params *params,
+				     const char *fname)
+{
+	int size;
+
+	size = imagetool_get_filesize(params, fname);
+	if (size < 0)
+		return -1;
+
+	/*
+	 * Pad to a 2KB alignment, as required for init/boot size by the ROM
+	 * (see https://lists.denx.de/pipermail/u-boot/2017-May/293268.html)
+	 */
+	return ROUND(size, RK_SIZE_ALIGN);
+}
+
+int rkcommon_check_params(struct image_tool_params *params)
+{
+	int i, size;
+
+	/*
+	 * If this is a operation (list or extract), the don't require
+	 * imagename to be set.
+	 */
+	if (params->lflag || params->iflag)
+		return EXIT_SUCCESS;
+
+	if (!rkcommon_get_spl_info(params->imagename))
+		goto err_spl_info;
+
+	spl_params.init_file = params->datafile;
+
+	spl_params.boot_file = strchr(spl_params.init_file, ':');
+	if (spl_params.boot_file) {
+		*spl_params.boot_file = '\0';
+		spl_params.boot_file += 1;
+	}
+
+	size = rkcommon_get_aligned_size(params, spl_params.init_file);
+	if (size < 0)
+		return EXIT_FAILURE;
+	spl_params.init_size = size;
+
+	/* Boot file is optional, and only for back-to-bootrom functionality. */
+	if (spl_params.boot_file) {
+		size = rkcommon_get_aligned_size(params, spl_params.boot_file);
+		if (size < 0)
+			return EXIT_FAILURE;
+		spl_params.boot_size = size;
+	}
+
+	if (spl_params.init_size > rkcommon_get_spl_size(params)) {
+		fprintf(stderr,
+			"Error: SPL image is too large (size %#x than %#x)\n",
+			spl_params.init_size, rkcommon_get_spl_size(params));
+		return EXIT_FAILURE;
+	}
+
+	return EXIT_SUCCESS;
+
+err_spl_info:
+	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, struct image_tool_params *params)
+{
+	struct header0_info *hdr = buf;
+	uint32_t init_boot_size;
+
+	memset(buf, '\0', RK_INIT_OFFSET * RK_BLK_SIZE);
+	hdr->signature   = cpu_to_le32(RK_SIGNATURE);
+	hdr->disable_rc4 = cpu_to_le32(!rkcommon_need_rc4_spl(params));
+	hdr->init_offset = cpu_to_le16(RK_INIT_OFFSET);
+	hdr->init_size   = cpu_to_le16(spl_params.init_size / RK_BLK_SIZE);
+
+	/*
+	 * 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
+	 */
+	if (spl_params.boot_file)
+		init_boot_size = spl_params.init_size + spl_params.boot_size;
+	else
+		init_boot_size = spl_params.init_size + RK_MAX_BOOT_SIZE;
+	hdr->init_boot_size = cpu_to_le16(init_boot_size / RK_BLK_SIZE);
+
+	rc4_encode(buf, RK_BLK_SIZE, rc4_key);
+}
+
+void rkcommon_set_header(void *buf,  struct stat *sbuf,  int ifd,
+			 struct image_tool_params *params)
+{
+	struct header1_info *hdr = buf + RK_SPL_HDR_START;
+
+	rkcommon_set_header0(buf, 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,
+					spl_params.init_size);
+
+	if (spl_params.boot_file) {
+		if (rkcommon_need_rc4_spl(params))
+			rkcommon_rc4_encode_spl(buf + RK_SPL_HDR_START,
+						spl_params.init_size,
+						spl_params.boot_size);
+	}
+}
+
+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 (le32_to_cpu(header0->signature) != RK_SIGNATURE)
+		return -EPROTO;
+
+	/* We don't support RC4 encoded image payloads here, yet... */
+	if (le32_to_cpu(header0->disable_rc4) == 0)
+		return -ENOSYS;
+
+	hdr1_offset = le16_to_cpu(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,
+			    RK_SPL_HDR_SIZE)) {
+			if (spl_info)
+				*spl_info = &spl_infos[i];
+			return IH_TYPE_RKSD;
+		} else if (!memcmp(&hdr1_spi->magic, spl_infos[i].spl_hdr,
+				   RK_SPL_HDR_SIZE)) {
+			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, boot_size, init_size;
+
+	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");
+	init_size = le16_to_cpu(header0.init_size) * RK_BLK_SIZE;
+	printf("Init Data Size: %d bytes\n", init_size);
+
+	boot_size = le16_to_cpu(header0.init_boot_size) * RK_BLK_SIZE - init_size;
+	if (boot_size != RK_MAX_BOOT_SIZE)
+		printf("Boot Data Size: %d bytes\n", boot_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)
+{
+	/*
+	 * 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) {
+		fprintf(stderr, "%s: Can't alloc header: %s\n",
+			params->cmdname, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+	memset(tparams->hdr, 0, tparams->header_size);
+
+	/*
+	 * We need to store the original file-size (i.e. before padding), as
+	 * imagetool does not set this during its adjustment of file_size.
+	 */
+	params->orig_file_size = tparams->header_size +
+		spl_params.init_size + spl_params.boot_size;
+
+	params->file_size = ROUND(params->orig_file_size, RK_SIZE_ALIGN);
+
+	/* Ignoring pad len, since we are using our own copy_image() */
+	return 0;
+}
+
+static int pad_file(struct image_tool_params *params, int ifd, int pad)
+{
+	uint8_t zeros[4096];
+
+	memset(zeros, 0, sizeof(zeros));
+
+	while (pad > 0) {
+		int todo = sizeof(zeros);
+
+		if (todo > pad)
+			todo = pad;
+		if (write(ifd, (char *)&zeros, todo) != todo) {
+			fprintf(stderr, "%s: Write error on %s: %s\n",
+				params->cmdname, params->imagefile,
+				strerror(errno));
+			return -1;
+		}
+		pad -= todo;
+	}
+
+	return 0;
+}
+
+static int copy_file(struct image_tool_params *params, int ifd,
+		     const char *file, int padded_size)
+{
+	int dfd;
+	struct stat sbuf;
+	unsigned char *ptr;
+	int size;
+
+	if (params->vflag)
+		fprintf(stderr, "Adding Image %s\n", file);
+
+	dfd = open(file, O_RDONLY | O_BINARY);
+	if (dfd < 0) {
+		fprintf(stderr, "%s: Can't open %s: %s\n",
+			params->cmdname, file, strerror(errno));
+		return -1;
+	}
+
+	if (fstat(dfd, &sbuf) < 0) {
+		fprintf(stderr, "%s: Can't stat %s: %s\n",
+			params->cmdname, file, strerror(errno));
+		goto err_close;
+	}
+
+	if (params->vflag)
+		fprintf(stderr, "Size %u(pad to %u)\n",
+			(int)sbuf.st_size, padded_size);
+
+	ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
+	if (ptr == MAP_FAILED) {
+		fprintf(stderr, "%s: Can't read %s: %s\n",
+			params->cmdname, file, strerror(errno));
+		goto err_munmap;
+	}
+
+	size = sbuf.st_size;
+	if (write(ifd, ptr, size) != size) {
+		fprintf(stderr, "%s: Write error on %s: %s\n",
+			params->cmdname, params->imagefile, strerror(errno));
+		goto err_munmap;
+	}
+
+	munmap((void *)ptr, sbuf.st_size);
+	close(dfd);
+	return pad_file(params, ifd, padded_size - size);
+
+err_munmap:
+	munmap((void *)ptr, sbuf.st_size);
+err_close:
+	close(dfd);
+	return -1;
+}
+
+int rockchip_copy_image(int ifd, struct image_tool_params *params)
+{
+	int ret;
+
+	ret = copy_file(params, ifd, spl_params.init_file,
+			spl_params.init_size);
+	if (ret)
+		return ret;
+
+	if (spl_params.boot_file) {
+		ret = copy_file(params, ifd, spl_params.boot_file,
+				spl_params.boot_size);
+		if (ret)
+			return ret;
+	}
+
+	return pad_file(params, ifd,
+			params->file_size - params->orig_file_size);
+}