tools: add i.MX8M image support

i.MX8M bootable image type is like i.MX6/7, but there is signed HDMI
firmware image in front of A53 bootable image, which is also has an IVT
header.

Here we also include fit image to generate a bootable image.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Stefano Babic <sbabic@denx.de>

1 files changed, 623 insertions, 0 deletions

diff --git a/tools/imx8mimage.c b/tools/imx8mimage.c
new file mode 100644
index 0000000..50a256c
--- /dev/null
+++ b/tools/imx8mimage.c
@@ -0,0 +1,623 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 NXP
+ *
+ * Peng Fan <peng.fan@nxp.com>
+ */
+
+
+#include "imagetool.h"
+#include <image.h>
+#include "imximage.h"
+#include "compiler.h"
+
+static uint32_t ap_start_addr, sld_start_addr, sld_src_off;
+static char *ap_img, *sld_img, *signed_hdmi;
+static imx_header_v3_t imx_header[2]; /* At most there are 3 IVT headers */
+static uint32_t rom_image_offset;
+static uint32_t sector_size = 0x200;
+static uint32_t image_off;
+static uint32_t sld_header_off;
+static uint32_t ivt_offset;
+static uint32_t using_fit;
+
+#define CSF_SIZE 0x2000
+#define HDMI_IVT_ID 0
+#define IMAGE_IVT_ID 1
+
+#define HDMI_FW_SIZE		0x17000 /* Use Last 0x1000 for IVT and CSF */
+#define ALIGN_SIZE		0x1000
+#define ALIGN(x,a)	__ALIGN_MASK((x), (__typeof__(x))(a) - 1, a)
+#define __ALIGN_MASK(x,mask,mask2) (((x) + (mask)) / (mask2) * (mask2))
+
+static uint32_t get_cfg_value(char *token, char *name,  int linenr)
+{
+	char *endptr;
+	uint32_t value;
+
+	errno = 0;
+	value = strtoul(token, &endptr, 16);
+	if (errno || token == endptr) {
+		fprintf(stderr, "Error: %s[%d] - Invalid hex data(%s)\n",
+			name,  linenr, token);
+		exit(EXIT_FAILURE);
+	}
+	return value;
+}
+
+int imx8mimage_check_params(struct image_tool_params *params)
+{
+	return 0;
+}
+
+static void imx8mimage_set_header(void *ptr, struct stat *sbuf, int ifd,
+				  struct image_tool_params *params)
+{
+}
+
+static void imx8mimage_print_header(const void *ptr)
+{
+}
+
+static int imx8mimage_check_image_types(uint8_t type)
+{
+	return (type == IH_TYPE_IMX8MIMAGE) ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+
+static table_entry_t imx8mimage_cmds[] = {
+	{CMD_BOOT_FROM,         "BOOT_FROM",            "boot command",	      },
+	{CMD_FIT,               "FIT",                  "fit image",	      },
+	{CMD_SIGNED_HDMI,       "SIGNED_HDMI",          "signed hdmi image",  },
+	{CMD_LOADER,            "LOADER",               "loader image",       },
+	{CMD_SECOND_LOADER,     "SECOND_LOADER",        "2nd loader image",   },
+	{CMD_DDR_FW,            "DDR_FW",               "ddr firmware",       },
+	{-1,                    "",                     "",	              },
+};
+
+static table_entry_t imx8mimage_ivt_offset[] = {
+	{0x400,		"sd",			"sd/emmc",},
+	{0x400,		"emmc_fastboot",	"emmc fastboot",},
+	{0x1000,	"fspi",			"flexspi",	},
+	{-1,		"",			"Invalid",	},
+};
+
+static void parse_cfg_cmd(int32_t cmd, char *token, char *name, int lineno)
+{
+	switch (cmd) {
+	case CMD_BOOT_FROM:
+		ivt_offset = get_table_entry_id(imx8mimage_ivt_offset,
+						"imx8mimage ivt offset",
+						token);
+		if (!strncmp(token, "sd", 2))
+			rom_image_offset = 0x8000;
+		break;
+	case CMD_LOADER:
+		ap_img = token;
+		break;
+	case CMD_SECOND_LOADER:
+		sld_img = token;
+		break;
+	case CMD_SIGNED_HDMI:
+		signed_hdmi = token;
+	case CMD_FIT:
+		using_fit = 1;
+		break;
+	case CMD_DDR_FW:
+		/* Do nothing */
+		break;
+	}
+}
+
+static void parse_cfg_fld(int32_t *cmd, char *token,
+			  char *name, int lineno, int fld)
+{
+	switch (fld) {
+	case CFG_COMMAND:
+		*cmd = get_table_entry_id(imx8mimage_cmds,
+					  "imx8mimage commands", token);
+		if (*cmd < 0) {
+			fprintf(stderr, "Error: %s[%d] - Invalid command" "(%s)\n",
+				name, lineno, token);
+			exit(EXIT_FAILURE);
+		}
+		break;
+	case CFG_REG_SIZE:
+		parse_cfg_cmd(*cmd, token, name, lineno);
+		break;
+	case CFG_REG_ADDRESS:
+		switch (*cmd) {
+		case CMD_LOADER:
+			ap_start_addr = get_cfg_value(token, name, lineno);
+			break;
+		case CMD_SECOND_LOADER:
+			sld_start_addr = get_cfg_value(token, name, lineno);
+			break;
+		}
+		break;
+	case CFG_REG_VALUE:
+		switch (*cmd) {
+		case CMD_SECOND_LOADER:
+			sld_src_off = get_cfg_value(token, name, lineno);
+			break;
+		}
+	default:
+		break;
+	}
+}
+
+static uint32_t parse_cfg_file(char *name)
+{
+	FILE *fd = NULL;
+	char *line = NULL;
+	char *token, *saveptr1, *saveptr2;
+	int lineno = 0;
+	int fld;
+	size_t len;
+	int32_t cmd;
+
+	fd = fopen(name, "r");
+	if (fd == 0) {
+		fprintf(stderr, "Error: %s - Can't open cfg file\n", name);
+		exit(EXIT_FAILURE);
+	}
+
+	/*
+	 * Very simple parsing, line starting with # are comments
+	 * and are dropped
+	 */
+	while ((getline(&line, &len, fd)) > 0) {
+		lineno++;
+
+		token = strtok_r(line, "\r\n", &saveptr1);
+		if (!token)
+			continue;
+
+		/* Check inside the single line */
+		for (fld = CFG_COMMAND, cmd = CFG_INVALID,
+		     line = token; ; line = NULL, fld++) {
+			token = strtok_r(line, " \t", &saveptr2);
+			if (!token)
+				break;
+
+			/* Drop all text starting with '#' as comments */
+			if (token[0] == '#')
+				break;
+
+			parse_cfg_fld(&cmd, token, name, lineno, fld);
+		}
+	}
+
+	return 0;
+}
+
+static void fill_zero(int ifd, int size, int offset)
+{
+	int fill_size;
+	uint8_t zeros[4096];
+	int ret;
+
+	memset(zeros, 0, sizeof(zeros));
+
+	ret = lseek(ifd, offset, SEEK_SET);
+	if (ret < 0) {
+		fprintf(stderr, "%s seek: %s\n", __func__, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	while (size) {
+		if (size > 4096)
+			fill_size = 4096;
+		else
+			fill_size = size;
+
+		if (write(ifd, (char *)&zeros, fill_size) != fill_size) {
+			fprintf(stderr, "Write error: %s\n",
+				strerror(errno));
+			exit(EXIT_FAILURE);
+		}
+
+		size -= fill_size;
+	};
+}
+
+static void copy_file(int ifd, const char *datafile, int pad, int offset,
+		      int datafile_offset)
+{
+	int dfd;
+	struct stat sbuf;
+	unsigned char *ptr;
+	int tail;
+	int zero = 0;
+	uint8_t zeros[4096];
+	int size, ret;
+
+	memset(zeros, 0, sizeof(zeros));
+
+	dfd = open(datafile, O_RDONLY | O_BINARY);
+	if (dfd < 0) {
+		fprintf(stderr, "Can't open %s: %s\n",
+			datafile, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	if (fstat(dfd, &sbuf) < 0) {
+		fprintf(stderr, "Can't stat %s: %s\n",
+			datafile, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
+	if (ptr == MAP_FAILED) {
+		fprintf(stderr, "Can't read %s: %s\n",
+			datafile, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	size = sbuf.st_size - datafile_offset;
+	ret = lseek(ifd, offset, SEEK_SET);
+	if (ret < 0) {
+		fprintf(stderr, "lseek ifd fail\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if (write(ifd, ptr + datafile_offset, size) != size) {
+		fprintf(stderr, "Write error %s\n",
+			strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	tail = size % 4;
+	pad = pad - size;
+	if (pad == 1 && tail != 0) {
+		if (write(ifd, (char *)&zero, 4 - tail) != 4 - tail) {
+			fprintf(stderr, "Write error on %s\n",
+				strerror(errno));
+			exit(EXIT_FAILURE);
+		}
+	} else if (pad > 1) {
+		while (pad > 0) {
+			int todo = sizeof(zeros);
+
+			if (todo > pad)
+				todo = pad;
+			if (write(ifd, (char *)&zeros, todo) != todo) {
+				fprintf(stderr, "Write error: %s\n",
+					strerror(errno));
+				exit(EXIT_FAILURE);
+			}
+			pad -= todo;
+		}
+	}
+
+	munmap((void *)ptr, sbuf.st_size);
+	close(dfd);
+}
+
+/* Return this IVT offset in the final output file */
+static int generate_ivt_for_fit(int fd, int fit_offset, uint32_t ep,
+				uint32_t *fit_load_addr)
+{
+	image_header_t image_header;
+	int ret;
+
+	uint32_t fit_size, load_addr;
+	int align_len = 64 - 1; /* 64 is cacheline size */
+
+	ret = lseek(fd, fit_offset, SEEK_SET);
+	if (ret < 0) {
+		fprintf(stderr, "lseek fd fail for fit\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if (read(fd, (char *)&image_header, sizeof(image_header_t)) !=
+	    sizeof(image_header_t)) {
+		fprintf(stderr, "generate_ivt_for_fit read failed: %s\n",
+			strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	if (be32_to_cpu(image_header.ih_magic) != FDT_MAGIC) {
+		fprintf(stderr, "%s error: not a FIT file\n", __func__);
+		exit(EXIT_FAILURE);
+	}
+
+	fit_size = fdt_totalsize(&image_header);
+	fit_size = (fit_size + 3) & ~3;
+
+	fit_size = ALIGN(fit_size, ALIGN_SIZE);
+
+	ret = lseek(fd, fit_offset + fit_size, SEEK_SET);
+	if (ret < 0) {
+		fprintf(stderr, "lseek fd fail for fit\n");
+		exit(EXIT_FAILURE);
+	}
+
+	/*
+	 * ep is the u-boot entry. SPL loads the FIT before the u-boot
+	 * address. 0x2000 is for CSF_SIZE
+	 */
+	load_addr = (ep - (fit_size + CSF_SIZE) - 512 - align_len) &
+		~align_len;
+
+	flash_header_v2_t ivt_header = { { 0xd1, 0x2000, 0x40 },
+		load_addr, 0, 0, 0,
+		(load_addr + fit_size),
+		(load_addr + fit_size + 0x20),
+		0 };
+
+	if (write(fd, &ivt_header, sizeof(flash_header_v2_t)) !=
+	    sizeof(flash_header_v2_t)) {
+		fprintf(stderr, "IVT writing error on fit image\n");
+		exit(EXIT_FAILURE);
+	}
+
+	*fit_load_addr = load_addr;
+
+	return fit_offset + fit_size;
+}
+
+static void dump_header_v2(imx_header_v3_t *imx_header, int index)
+{
+	const char *ivt_name[2] = {"HDMI FW", "LOADER IMAGE"};
+
+	fprintf(stdout, "========= IVT HEADER [%s] =========\n",
+		ivt_name[index]);
+	fprintf(stdout, "header.tag: \t\t0x%x\n",
+		imx_header[index].fhdr.header.tag);
+	fprintf(stdout, "header.length: \t\t0x%x\n",
+		imx_header[index].fhdr.header.length);
+	fprintf(stdout, "header.version: \t0x%x\n",
+		imx_header[index].fhdr.header.version);
+	fprintf(stdout, "entry: \t\t\t0x%x\n",
+		imx_header[index].fhdr.entry);
+	fprintf(stdout, "reserved1: \t\t0x%x\n",
+		imx_header[index].fhdr.reserved1);
+	fprintf(stdout, "dcd_ptr: \t\t0x%x\n",
+		imx_header[index].fhdr.dcd_ptr);
+	fprintf(stdout, "boot_data_ptr: \t\t0x%x\n",
+		imx_header[index].fhdr.boot_data_ptr);
+	fprintf(stdout, "self: \t\t\t0x%x\n",
+		imx_header[index].fhdr.self);
+	fprintf(stdout, "csf: \t\t\t0x%x\n",
+		imx_header[index].fhdr.csf);
+	fprintf(stdout, "reserved2: \t\t0x%x\n",
+		imx_header[index].fhdr.reserved2);
+
+	fprintf(stdout, "boot_data.start: \t0x%x\n",
+		imx_header[index].boot_data.start);
+	fprintf(stdout, "boot_data.size: \t0x%x\n",
+		imx_header[index].boot_data.size);
+	fprintf(stdout, "boot_data.plugin: \t0x%x\n",
+		imx_header[index].boot_data.plugin);
+}
+
+void build_image(int ofd)
+{
+	int file_off, header_hdmi_off = 0, header_image_off;
+	int hdmi_fd, ap_fd, sld_fd;
+	uint32_t sld_load_addr = 0;
+	uint32_t csf_off, sld_csf_off = 0;
+	int ret;
+	struct stat sbuf;
+
+	if (!ap_img) {
+		fprintf(stderr, "No LOADER image specificed\n");
+		exit(EXIT_FAILURE);
+	}
+
+	file_off = 0;
+
+	if (signed_hdmi) {
+		header_hdmi_off = file_off + ivt_offset;
+
+		hdmi_fd = open(signed_hdmi, O_RDONLY | O_BINARY);
+		if (hdmi_fd < 0) {
+			fprintf(stderr, "%s: Can't open: %s\n",
+				signed_hdmi, strerror(errno));
+			exit(EXIT_FAILURE);
+		}
+
+		if (fstat(hdmi_fd, &sbuf) < 0) {
+			fprintf(stderr, "%s: Can't stat: %s\n",
+				signed_hdmi, strerror(errno));
+			exit(EXIT_FAILURE);
+		}
+		close(hdmi_fd);
+
+		/*
+		 * Aligned to 104KB = 92KB FW image + 0x8000
+		 * (IVT and alignment) + 0x4000 (second IVT + CSF)
+		 */
+		file_off += ALIGN(sbuf.st_size,
+				  HDMI_FW_SIZE + 0x2000 + 0x1000);
+	}
+
+	header_image_off = file_off + ivt_offset;
+
+	ap_fd = open(ap_img, O_RDONLY | O_BINARY);
+	if (ap_fd < 0) {
+		fprintf(stderr, "%s: Can't open: %s\n",
+			ap_img, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+	if (fstat(ap_fd, &sbuf) < 0) {
+		fprintf(stderr, "%s: Can't stat: %s\n",
+			ap_img, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+	close(ap_fd);
+
+	imx_header[IMAGE_IVT_ID].fhdr.header.tag = IVT_HEADER_TAG; /* 0xD1 */
+	imx_header[IMAGE_IVT_ID].fhdr.header.length =
+		cpu_to_be16(sizeof(flash_header_v2_t));
+	imx_header[IMAGE_IVT_ID].fhdr.header.version = IVT_VERSION_V3; /* 0x41 */
+	imx_header[IMAGE_IVT_ID].fhdr.entry = ap_start_addr;
+	imx_header[IMAGE_IVT_ID].fhdr.self = ap_start_addr -
+		sizeof(imx_header_v3_t);
+	imx_header[IMAGE_IVT_ID].fhdr.dcd_ptr = 0;
+	imx_header[IMAGE_IVT_ID].fhdr.boot_data_ptr =
+		imx_header[IMAGE_IVT_ID].fhdr.self +
+		offsetof(imx_header_v3_t, boot_data);
+	imx_header[IMAGE_IVT_ID].boot_data.start =
+		imx_header[IMAGE_IVT_ID].fhdr.self - ivt_offset;
+	imx_header[IMAGE_IVT_ID].boot_data.size =
+		ALIGN(sbuf.st_size + sizeof(imx_header_v3_t) + ivt_offset,
+		      sector_size);
+
+	image_off = header_image_off + sizeof(imx_header_v3_t);
+	file_off +=  imx_header[IMAGE_IVT_ID].boot_data.size;
+
+	imx_header[IMAGE_IVT_ID].boot_data.plugin = 0;
+	imx_header[IMAGE_IVT_ID].fhdr.csf =
+		imx_header[IMAGE_IVT_ID].boot_data.start +
+		imx_header[IMAGE_IVT_ID].boot_data.size;
+
+	imx_header[IMAGE_IVT_ID].boot_data.size += CSF_SIZE; /* 8K region dummy CSF */
+
+	csf_off = file_off;
+	file_off += CSF_SIZE;
+
+	/* Second boot loader image */
+	if (sld_img) {
+		if (!using_fit) {
+			fprintf(stderr, "Not support no fit\n");
+			exit(EXIT_FAILURE);
+		} else {
+			sld_header_off = sld_src_off - rom_image_offset;
+			/*
+			 * Record the second bootloader relative offset in
+			 * image's IVT reserved1
+			 */
+			imx_header[IMAGE_IVT_ID].fhdr.reserved1 =
+				sld_header_off - header_image_off;
+			sld_fd = open(sld_img, O_RDONLY | O_BINARY);
+			if (sld_fd < 0) {
+				fprintf(stderr, "%s: Can't open: %s\n",
+					sld_img, strerror(errno));
+				exit(EXIT_FAILURE);
+			}
+
+			if (fstat(sld_fd, &sbuf) < 0) {
+				fprintf(stderr, "%s: Can't stat: %s\n",
+					sld_img, strerror(errno));
+				exit(EXIT_FAILURE);
+			}
+
+			close(sld_fd);
+
+			file_off = sld_header_off;
+			file_off += sbuf.st_size + sizeof(image_header_t);
+		}
+	}
+
+	if (signed_hdmi) {
+		header_hdmi_off -= ivt_offset;
+		ret = lseek(ofd, header_hdmi_off, SEEK_SET);
+		if (ret < 0) {
+			fprintf(stderr, "lseek ofd fail for hdmi\n");
+			exit(EXIT_FAILURE);
+		}
+
+		/* The signed HDMI FW has 0x400 IVT offset, need remove it */
+		copy_file(ofd, signed_hdmi, 0, header_hdmi_off, 0x400);
+	}
+
+	/* Main Image */
+	header_image_off -= ivt_offset;
+	image_off -= ivt_offset;
+	ret = lseek(ofd, header_image_off, SEEK_SET);
+	if (ret < 0) {
+		fprintf(stderr, "lseek ofd fail\n");
+		exit(EXIT_FAILURE);
+	}
+
+	/* Write image header */
+	if (write(ofd, &imx_header[IMAGE_IVT_ID], sizeof(imx_header_v3_t)) !=
+	    sizeof(imx_header_v3_t)) {
+		fprintf(stderr, "error writing image hdr\n");
+		exit(1);
+	}
+
+	copy_file(ofd, ap_img, 0, image_off, 0);
+
+	csf_off -= ivt_offset;
+	fill_zero(ofd, CSF_SIZE, csf_off);
+
+	if (sld_img) {
+		sld_header_off -= ivt_offset;
+		ret = lseek(ofd, sld_header_off, SEEK_SET);
+		if (ret < 0) {
+			fprintf(stderr, "lseek ofd fail for sld_img\n");
+			exit(EXIT_FAILURE);
+		}
+
+		/* Write image header */
+		if (!using_fit) {
+			/* TODO */
+		} else {
+			copy_file(ofd, sld_img, 0, sld_header_off, 0);
+			sld_csf_off =
+				generate_ivt_for_fit(ofd, sld_header_off,
+						     sld_start_addr,
+						     &sld_load_addr) + 0x20;
+		}
+	}
+
+	if (!signed_hdmi)
+		dump_header_v2(imx_header, 0);
+	dump_header_v2(imx_header, 1);
+
+	fprintf(stdout, "========= OFFSET dump =========");
+	if (signed_hdmi) {
+		fprintf(stdout, "\nSIGNED HDMI FW:\n");
+		fprintf(stdout, " header_hdmi_off \t0x%x\n",
+			header_hdmi_off);
+	}
+
+	fprintf(stdout, "\nLoader IMAGE:\n");
+	fprintf(stdout, " header_image_off \t0x%x\n image_off \t\t0x%x\n csf_off \t\t0x%x\n",
+		header_image_off, image_off, csf_off);
+	fprintf(stdout, " spl hab block: \t0x%x 0x%x 0x%x\n",
+		imx_header[IMAGE_IVT_ID].fhdr.self, header_image_off,
+		csf_off - header_image_off);
+
+	fprintf(stdout, "\nSecond Loader IMAGE:\n");
+	fprintf(stdout, " sld_header_off \t0x%x\n",
+		sld_header_off);
+	fprintf(stdout, " sld_csf_off \t\t0x%x\n",
+		sld_csf_off);
+	fprintf(stdout, " sld hab block: \t0x%x 0x%x 0x%x\n",
+		sld_load_addr, sld_header_off, sld_csf_off - sld_header_off);
+}
+
+int imx8mimage_copy_image(int outfd, struct image_tool_params *mparams)
+{
+	/*
+	 * SECO FW is a container image, this is to calculate the
+	 * 2nd container offset.
+	 */
+	fprintf(stdout, "parsing %s\n", mparams->imagename);
+	parse_cfg_file(mparams->imagename);
+
+	build_image(outfd);
+
+	return 0;
+}
+
+/*
+ * imx8mimage parameters
+ */
+U_BOOT_IMAGE_TYPE(
+	imx8mimage,
+	"NXP i.MX8M Boot Image support",
+	0,
+	NULL,
+	imx8mimage_check_params,
+	NULL,
+	imx8mimage_print_header,
+	imx8mimage_set_header,
+	NULL,
+	imx8mimage_check_image_types,
+	NULL,
+	NULL
+);