ifdtool.c 28 KB
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/*
 * ifdtool - Manage Intel Firmware Descriptor information
 *
 * Copyright 2014 Google, Inc
 *
 * SPDX-License-Identifier:	GPL-2.0
 *
 * From Coreboot project, but it got a serious code clean-up
 * and a few new features
 */

#include <assert.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
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#include <libfdt.h>
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#include "ifdtool.h"

#undef DEBUG

#ifdef DEBUG
#define debug(fmt, args...)	printf(fmt, ##args)
#else
#define debug(fmt, args...)
#endif

#define FD_SIGNATURE		0x0FF0A55A
#define FLREG_BASE(reg)		((reg & 0x00000fff) << 12);
#define FLREG_LIMIT(reg)	(((reg & 0x0fff0000) >> 4) | 0xfff);

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struct input_file {
	char *fname;
	unsigned int addr;
};

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/**
 * find_fd() - Find the flash description in the ROM image
 *
 * @image:	Pointer to image
 * @size:	Size of image in bytes
 * @return pointer to structure, or NULL if not found
 */
static struct fdbar_t *find_fd(char *image, int size)
{
	uint32_t *ptr, *end;

	/* Scan for FD signature */
	for (ptr = (uint32_t *)image, end = ptr + size / 4; ptr < end; ptr++) {
		if (*ptr == FD_SIGNATURE)
			break;
	}

	if (ptr == end) {
		printf("No Flash Descriptor found in this image\n");
		return NULL;
	}

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	debug("Found Flash Descriptor signature at 0x%08lx\n",
	      (char *)ptr - image);
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	return (struct fdbar_t *)ptr;
}

/**
 * get_region() - Get information about the selected region
 *
 * @frba:		Flash region list
 * @region_type:	Type of region (0..MAX_REGIONS-1)
 * @region:		Region information is written here
 * @return 0 if OK, else -ve
 */
static int get_region(struct frba_t *frba, int region_type,
		      struct region_t *region)
{
	if (region_type >= MAX_REGIONS) {
		fprintf(stderr, "Invalid region type.\n");
		return -1;
	}

	region->base = FLREG_BASE(frba->flreg[region_type]);
	region->limit = FLREG_LIMIT(frba->flreg[region_type]);
	region->size = region->limit - region->base + 1;

	return 0;
}

static const char *region_name(int region_type)
{
	static const char *const regions[] = {
		"Flash Descriptor",
		"BIOS",
		"Intel ME",
		"GbE",
		"Platform Data"
	};

	assert(region_type < MAX_REGIONS);

	return regions[region_type];
}

static const char *region_filename(int region_type)
{
	static const char *const region_filenames[] = {
		"flashregion_0_flashdescriptor.bin",
		"flashregion_1_bios.bin",
		"flashregion_2_intel_me.bin",
		"flashregion_3_gbe.bin",
		"flashregion_4_platform_data.bin"
	};

	assert(region_type < MAX_REGIONS);

	return region_filenames[region_type];
}

static int dump_region(int num, struct frba_t *frba)
{
	struct region_t region;
	int ret;

	ret = get_region(frba, num, &region);
	if (ret)
		return ret;

	printf("  Flash Region %d (%s): %08x - %08x %s\n",
	       num, region_name(num), region.base, region.limit,
	       region.size < 1 ? "(unused)" : "");

	return ret;
}

static void dump_frba(struct frba_t *frba)
{
	int i;

	printf("Found Region Section\n");
	for (i = 0; i < MAX_REGIONS; i++) {
		printf("FLREG%d:    0x%08x\n", i, frba->flreg[i]);
		dump_region(i, frba);
	}
}

static void decode_spi_frequency(unsigned int freq)
{
	switch (freq) {
	case SPI_FREQUENCY_20MHZ:
		printf("20MHz");
		break;
	case SPI_FREQUENCY_33MHZ:
		printf("33MHz");
		break;
	case SPI_FREQUENCY_50MHZ:
		printf("50MHz");
		break;
	default:
		printf("unknown<%x>MHz", freq);
	}
}

static void decode_component_density(unsigned int density)
{
	switch (density) {
	case COMPONENT_DENSITY_512KB:
		printf("512KiB");
		break;
	case COMPONENT_DENSITY_1MB:
		printf("1MiB");
		break;
	case COMPONENT_DENSITY_2MB:
		printf("2MiB");
		break;
	case COMPONENT_DENSITY_4MB:
		printf("4MiB");
		break;
	case COMPONENT_DENSITY_8MB:
		printf("8MiB");
		break;
	case COMPONENT_DENSITY_16MB:
		printf("16MiB");
		break;
	default:
		printf("unknown<%x>MiB", density);
	}
}

static void dump_fcba(struct fcba_t *fcba)
{
	printf("\nFound Component Section\n");
	printf("FLCOMP     0x%08x\n", fcba->flcomp);
	printf("  Dual Output Fast Read Support:       %ssupported\n",
	       (fcba->flcomp & (1 << 30)) ? "" : "not ");
	printf("  Read ID/Read Status Clock Frequency: ");
	decode_spi_frequency((fcba->flcomp >> 27) & 7);
	printf("\n  Write/Erase Clock Frequency:         ");
	decode_spi_frequency((fcba->flcomp >> 24) & 7);
	printf("\n  Fast Read Clock Frequency:           ");
	decode_spi_frequency((fcba->flcomp >> 21) & 7);
	printf("\n  Fast Read Support:                   %ssupported",
	       (fcba->flcomp & (1 << 20)) ? "" : "not ");
	printf("\n  Read Clock Frequency:                ");
	decode_spi_frequency((fcba->flcomp >> 17) & 7);
	printf("\n  Component 2 Density:                 ");
	decode_component_density((fcba->flcomp >> 3) & 7);
	printf("\n  Component 1 Density:                 ");
	decode_component_density(fcba->flcomp & 7);
	printf("\n");
	printf("FLILL      0x%08x\n", fcba->flill);
	printf("  Invalid Instruction 3: 0x%02x\n",
	       (fcba->flill >> 24) & 0xff);
	printf("  Invalid Instruction 2: 0x%02x\n",
	       (fcba->flill >> 16) & 0xff);
	printf("  Invalid Instruction 1: 0x%02x\n",
	       (fcba->flill >> 8) & 0xff);
	printf("  Invalid Instruction 0: 0x%02x\n",
	       fcba->flill & 0xff);
	printf("FLPB       0x%08x\n", fcba->flpb);
	printf("  Flash Partition Boundary Address: 0x%06x\n\n",
	       (fcba->flpb & 0xfff) << 12);
}

static void dump_fpsba(struct fpsba_t *fpsba)
{
	int i;

	printf("Found PCH Strap Section\n");
	for (i = 0; i < MAX_STRAPS; i++)
		printf("PCHSTRP%-2d:  0x%08x\n", i, fpsba->pchstrp[i]);
}

static const char *get_enabled(int flag)
{
	return flag ? "enabled" : "disabled";
}

static void decode_flmstr(uint32_t flmstr)
{
	printf("  Platform Data Region Write Access: %s\n",
	       get_enabled(flmstr & (1 << 28)));
	printf("  GbE Region Write Access:           %s\n",
	       get_enabled(flmstr & (1 << 27)));
	printf("  Intel ME Region Write Access:      %s\n",
	       get_enabled(flmstr & (1 << 26)));
	printf("  Host CPU/BIOS Region Write Access: %s\n",
	       get_enabled(flmstr & (1 << 25)));
	printf("  Flash Descriptor Write Access:     %s\n",
	       get_enabled(flmstr & (1 << 24)));

	printf("  Platform Data Region Read Access:  %s\n",
	       get_enabled(flmstr & (1 << 20)));
	printf("  GbE Region Read Access:            %s\n",
	       get_enabled(flmstr & (1 << 19)));
	printf("  Intel ME Region Read Access:       %s\n",
	       get_enabled(flmstr & (1 << 18)));
	printf("  Host CPU/BIOS Region Read Access:  %s\n",
	       get_enabled(flmstr & (1 << 17)));
	printf("  Flash Descriptor Read Access:      %s\n",
	       get_enabled(flmstr & (1 << 16)));

	printf("  Requester ID:                      0x%04x\n\n",
	       flmstr & 0xffff);
}

static void dump_fmba(struct fmba_t *fmba)
{
	printf("Found Master Section\n");
	printf("FLMSTR1:   0x%08x (Host CPU/BIOS)\n", fmba->flmstr1);
	decode_flmstr(fmba->flmstr1);
	printf("FLMSTR2:   0x%08x (Intel ME)\n", fmba->flmstr2);
	decode_flmstr(fmba->flmstr2);
	printf("FLMSTR3:   0x%08x (GbE)\n", fmba->flmstr3);
	decode_flmstr(fmba->flmstr3);
}

static void dump_fmsba(struct fmsba_t *fmsba)
{
	int i;

	printf("Found Processor Strap Section\n");
	for (i = 0; i < 4; i++)
		printf("????:      0x%08x\n", fmsba->data[0]);
}

static void dump_jid(uint32_t jid)
{
	printf("    SPI Component Device ID 1:          0x%02x\n",
	       (jid >> 16) & 0xff);
	printf("    SPI Component Device ID 0:          0x%02x\n",
	       (jid >> 8) & 0xff);
	printf("    SPI Component Vendor ID:            0x%02x\n",
	       jid & 0xff);
}

static void dump_vscc(uint32_t vscc)
{
	printf("    Lower Erase Opcode:                 0x%02x\n",
	       vscc >> 24);
	printf("    Lower Write Enable on Write Status: 0x%02x\n",
	       vscc & (1 << 20) ? 0x06 : 0x50);
	printf("    Lower Write Status Required:        %s\n",
	       vscc & (1 << 19) ? "Yes" : "No");
	printf("    Lower Write Granularity:            %d bytes\n",
	       vscc & (1 << 18) ? 64 : 1);
	printf("    Lower Block / Sector Erase Size:    ");
	switch ((vscc >> 16) & 0x3) {
	case 0:
		printf("256 Byte\n");
		break;
	case 1:
		printf("4KB\n");
		break;
	case 2:
		printf("8KB\n");
		break;
	case 3:
		printf("64KB\n");
		break;
	}

	printf("    Upper Erase Opcode:                 0x%02x\n",
	       (vscc >> 8) & 0xff);
	printf("    Upper Write Enable on Write Status: 0x%02x\n",
	       vscc & (1 << 4) ? 0x06 : 0x50);
	printf("    Upper Write Status Required:        %s\n",
	       vscc & (1 << 3) ? "Yes" : "No");
	printf("    Upper Write Granularity:            %d bytes\n",
	       vscc & (1 << 2) ? 64 : 1);
	printf("    Upper Block / Sector Erase Size:    ");
	switch (vscc & 0x3) {
	case 0:
		printf("256 Byte\n");
		break;
	case 1:
		printf("4KB\n");
		break;
	case 2:
		printf("8KB\n");
		break;
	case 3:
		printf("64KB\n");
		break;
	}
}

static void dump_vtba(struct vtba_t *vtba, int vtl)
{
	int i;
	int num = (vtl >> 1) < 8 ? (vtl >> 1) : 8;

	printf("ME VSCC table:\n");
	for (i = 0; i < num; i++) {
		printf("  JID%d:  0x%08x\n", i, vtba->entry[i].jid);
		dump_jid(vtba->entry[i].jid);
		printf("  VSCC%d: 0x%08x\n", i, vtba->entry[i].vscc);
		dump_vscc(vtba->entry[i].vscc);
	}
	printf("\n");
}

static void dump_oem(uint8_t *oem)
{
	int i, j;
	printf("OEM Section:\n");
	for (i = 0; i < 4; i++) {
		printf("%02x:", i << 4);
		for (j = 0; j < 16; j++)
			printf(" %02x", oem[(i<<4)+j]);
		printf("\n");
	}
	printf("\n");
}

/**
 * dump_fd() - Display a dump of the full flash description
 *
 * @image:	Pointer to image
 * @size:	Size of image in bytes
 * @return 0 if OK, -1 on error
 */
static int dump_fd(char *image, int size)
{
	struct fdbar_t *fdb = find_fd(image, size);

	if (!fdb)
		return -1;

	printf("FLMAP0:    0x%08x\n", fdb->flmap0);
	printf("  NR:      %d\n", (fdb->flmap0 >> 24) & 7);
	printf("  FRBA:    0x%x\n", ((fdb->flmap0 >> 16) & 0xff) << 4);
	printf("  NC:      %d\n", ((fdb->flmap0 >> 8) & 3) + 1);
	printf("  FCBA:    0x%x\n", ((fdb->flmap0) & 0xff) << 4);

	printf("FLMAP1:    0x%08x\n", fdb->flmap1);
	printf("  ISL:     0x%02x\n", (fdb->flmap1 >> 24) & 0xff);
	printf("  FPSBA:   0x%x\n", ((fdb->flmap1 >> 16) & 0xff) << 4);
	printf("  NM:      %d\n", (fdb->flmap1 >> 8) & 3);
	printf("  FMBA:    0x%x\n", ((fdb->flmap1) & 0xff) << 4);

	printf("FLMAP2:    0x%08x\n", fdb->flmap2);
	printf("  PSL:     0x%04x\n", (fdb->flmap2 >> 8) & 0xffff);
	printf("  FMSBA:   0x%x\n", ((fdb->flmap2) & 0xff) << 4);

	printf("FLUMAP1:   0x%08x\n", fdb->flumap1);
	printf("  Intel ME VSCC Table Length (VTL):        %d\n",
	       (fdb->flumap1 >> 8) & 0xff);
	printf("  Intel ME VSCC Table Base Address (VTBA): 0x%06x\n\n",
	       (fdb->flumap1 & 0xff) << 4);
	dump_vtba((struct vtba_t *)
			(image + ((fdb->flumap1 & 0xff) << 4)),
			(fdb->flumap1 >> 8) & 0xff);
	dump_oem((uint8_t *)image + 0xf00);
	dump_frba((struct frba_t *)(image + (((fdb->flmap0 >> 16) & 0xff)
			<< 4)));
	dump_fcba((struct fcba_t *)(image + (((fdb->flmap0) & 0xff) << 4)));
	dump_fpsba((struct fpsba_t *)
			(image + (((fdb->flmap1 >> 16) & 0xff) << 4)));
	dump_fmba((struct fmba_t *)(image + (((fdb->flmap1) & 0xff) << 4)));
	dump_fmsba((struct fmsba_t *)(image + (((fdb->flmap2) & 0xff) << 4)));

	return 0;
}

/**
 * write_regions() - Write each region from an image to its own file
 *
 * The filename to use in each case is fixed - see region_filename()
 *
 * @image:	Pointer to image
 * @size:	Size of image in bytes
 * @return 0 if OK, -ve on error
 */
static int write_regions(char *image, int size)
{
	struct fdbar_t *fdb;
	struct frba_t *frba;
	int ret = 0;
	int i;

	fdb =  find_fd(image, size);
	if (!fdb)
		return -1;

	frba = (struct frba_t *)(image + (((fdb->flmap0 >> 16) & 0xff) << 4));

	for (i = 0; i < MAX_REGIONS; i++) {
		struct region_t region;
		int region_fd;

		ret = get_region(frba, i, &region);
		if (ret)
			return ret;
		dump_region(i, frba);
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		if (region.size <= 0)
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			continue;
		region_fd = open(region_filename(i),
				 O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR |
				 S_IWUSR | S_IRGRP | S_IROTH);
		if (write(region_fd, image + region.base, region.size) !=
				region.size) {
			perror("Error while writing");
			ret = -1;
		}
		close(region_fd);
	}

	return ret;
}

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static int perror_fname(const char *fmt, const char *fname)
{
	char msg[strlen(fmt) + strlen(fname) + 1];

	sprintf(msg, fmt, fname);
	perror(msg);

	return -1;
}

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/**
 * write_image() - Write the image to a file
 *
 * @filename:	Filename to use for the image
 * @image:	Pointer to image
 * @size:	Size of image in bytes
 * @return 0 if OK, -ve on error
 */
static int write_image(char *filename, char *image, int size)
{
	int new_fd;

	debug("Writing new image to %s\n", filename);

	new_fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR |
		      S_IWUSR | S_IRGRP | S_IROTH);
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	if (new_fd < 0)
		return perror_fname("Could not open file '%s'", filename);
	if (write(new_fd, image, size) != size)
		return perror_fname("Could not write file '%s'", filename);
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	close(new_fd);

	return 0;
}

/**
 * set_spi_frequency() - Set the SPI frequency to use when booting
 *
 * Several frequencies are supported, some of which work with fast devices.
 * For SPI emulators, the slowest (SPI_FREQUENCY_20MHZ) is often used. The
 * Intel boot system uses this information somehow on boot.
 *
 * The image is updated with the supplied value
 *
 * @image:	Pointer to image
 * @size:	Size of image in bytes
 * @freq:	SPI frequency to use
 */
static void set_spi_frequency(char *image, int size, enum spi_frequency freq)
{
	struct fdbar_t *fdb = find_fd(image, size);
	struct fcba_t *fcba;

	fcba = (struct fcba_t *)(image + (((fdb->flmap0) & 0xff) << 4));

	/* clear bits 21-29 */
	fcba->flcomp &= ~0x3fe00000;
	/* Read ID and Read Status Clock Frequency */
	fcba->flcomp |= freq << 27;
	/* Write and Erase Clock Frequency */
	fcba->flcomp |= freq << 24;
	/* Fast Read Clock Frequency */
	fcba->flcomp |= freq << 21;
}

/**
 * set_em100_mode() - Set a SPI frequency that will work with Dediprog EM100
 *
 * @image:	Pointer to image
 * @size:	Size of image in bytes
 */
static void set_em100_mode(char *image, int size)
{
	struct fdbar_t *fdb = find_fd(image, size);
	struct fcba_t *fcba;

	fcba = (struct fcba_t *)(image + (((fdb->flmap0) & 0xff) << 4));
	fcba->flcomp &= ~(1 << 30);
	set_spi_frequency(image, size, SPI_FREQUENCY_20MHZ);
}

/**
 * lock_descriptor() - Lock the NE descriptor so it cannot be updated
 *
 * @image:	Pointer to image
 * @size:	Size of image in bytes
 */
static void lock_descriptor(char *image, int size)
{
	struct fdbar_t *fdb = find_fd(image, size);
	struct fmba_t *fmba;

	/*
	 * TODO: Dynamically take Platform Data Region and GbE Region into
	 * account.
	 */
	fmba = (struct fmba_t *)(image + (((fdb->flmap1) & 0xff) << 4));
	fmba->flmstr1 = 0x0a0b0000;
	fmba->flmstr2 = 0x0c0d0000;
	fmba->flmstr3 = 0x08080118;
}

/**
 * unlock_descriptor() - Lock the NE descriptor so it can be updated
 *
 * @image:	Pointer to image
 * @size:	Size of image in bytes
 */
static void unlock_descriptor(char *image, int size)
{
	struct fdbar_t *fdb = find_fd(image, size);
	struct fmba_t *fmba;

	fmba = (struct fmba_t *)(image + (((fdb->flmap1) & 0xff) << 4));
	fmba->flmstr1 = 0xffff0000;
	fmba->flmstr2 = 0xffff0000;
	fmba->flmstr3 = 0x08080118;
}

/**
 * open_for_read() - Open a file for reading
 *
 * @fname:	Filename to open
 * @sizep:	Returns file size in bytes
 * @return 0 if OK, -1 on error
 */
int open_for_read(const char *fname, int *sizep)
{
	int fd = open(fname, O_RDONLY);
	struct stat buf;

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	if (fd == -1)
		return perror_fname("Could not open file '%s'", fname);
	if (fstat(fd, &buf) == -1)
		return perror_fname("Could not stat file '%s'", fname);
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	*sizep = buf.st_size;
	debug("File %s is %d bytes\n", fname, *sizep);

	return fd;
}

/**
 * inject_region() - Add a file to an image region
 *
 * This puts a file into a particular region of the flash. Several pre-defined
 * regions are used.
 *
 * @image:		Pointer to image
 * @size:		Size of image in bytes
 * @region_type:	Region where the file should be added
 * @region_fname:	Filename to add to the image
 * @return 0 if OK, -ve on error
 */
int inject_region(char *image, int size, int region_type, char *region_fname)
{
	struct fdbar_t *fdb = find_fd(image, size);
	struct region_t region;
	struct frba_t *frba;
	int region_size;
	int offset = 0;
	int region_fd;
	int ret;

	if (!fdb)
		exit(EXIT_FAILURE);
	frba = (struct frba_t *)(image + (((fdb->flmap0 >> 16) & 0xff) << 4));

	ret = get_region(frba, region_type, &region);
	if (ret)
		return -1;
	if (region.size <= 0xfff) {
		fprintf(stderr, "Region %s is disabled in target. Not injecting.\n",
			region_name(region_type));
		return -1;
	}

	region_fd = open_for_read(region_fname, &region_size);
	if (region_fd < 0)
		return region_fd;

	if ((region_size > region.size) ||
	    ((region_type != 1) && (region_size > region.size))) {
		fprintf(stderr, "Region %s is %d(0x%x) bytes. File is %d(0x%x)  bytes. Not injecting.\n",
			region_name(region_type), region.size,
			region.size, region_size, region_size);
		return -1;
	}

	if ((region_type == 1) && (region_size < region.size)) {
		fprintf(stderr, "Region %s is %d(0x%x) bytes. File is %d(0x%x) bytes. Padding before injecting.\n",
			region_name(region_type), region.size,
			region.size, region_size, region_size);
		offset = region.size - region_size;
		memset(image + region.base, 0xff, offset);
	}

	if (size < region.base + offset + region_size) {
		fprintf(stderr, "Output file is too small. (%d < %d)\n",
			size, region.base + offset + region_size);
		return -1;
	}

	if (read(region_fd, image + region.base + offset, region_size)
							!= region_size) {
		perror("Could not read file");
		return -1;
	}

	close(region_fd);

	debug("Adding %s as the %s section\n", region_fname,
	      region_name(region_type));

	return 0;
}

/**
 * write_data() - Write some raw data into a region
 *
 * This puts a file into a particular place in the flash, ignoring the
 * regions. Be careful not to overwrite something important.
 *
 * @image:		Pointer to image
 * @size:		Size of image in bytes
 * @addr:		x86 ROM address to put file. The ROM ends at
 *			0xffffffff so use an address relative to that. For an
 *			8MB ROM the start address is 0xfff80000.
 * @write_fname:	Filename to add to the image
702
 * @offset_uboot_top:	Offset of the top of U-Boot
703
 * @offset_uboot_start:	Offset of the start of U-Boot
704
 * @return number of bytes written if OK, -ve on error
705 706
 */
static int write_data(char *image, int size, unsigned int addr,
707 708
		      const char *write_fname, int offset_uboot_top,
		      int offset_uboot_start)
709 710 711 712 713 714 715 716
{
	int write_fd, write_size;
	int offset;

	write_fd = open_for_read(write_fname, &write_size);
	if (write_fd < 0)
		return write_fd;

717
	offset = (uint32_t)(addr + size);
718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736
	if (offset_uboot_top) {
		if (offset_uboot_start < offset &&
		    offset_uboot_top >= offset) {
			fprintf(stderr, "U-Boot image overlaps with region '%s'\n",
				write_fname);
			fprintf(stderr,
				"U-Boot finishes at offset %x, file starts at %x\n",
				offset_uboot_top, offset);
			return -EXDEV;
		}
		if (offset_uboot_start > offset &&
		    offset_uboot_start <= offset + write_size) {
			fprintf(stderr, "U-Boot image overlaps with region '%s'\n",
				write_fname);
			fprintf(stderr,
				"U-Boot starts at offset %x, file finishes at %x\n",
				offset_uboot_start, offset + write_size);
			return -EXDEV;
		}
737
	}
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	debug("Writing %s to offset %#x\n", write_fname, offset);

	if (offset < 0 || offset + write_size > size) {
		fprintf(stderr, "Output file is too small. (%d < %d)\n",
			size, offset + write_size);
		return -1;
	}

	if (read(write_fd, image + offset, write_size) != write_size) {
		perror("Could not read file");
		return -1;
	}

	close(write_fd);

753 754 755
	return write_size;
}

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static void print_version(void)
{
	printf("ifdtool v%s -- ", IFDTOOL_VERSION);
	printf("Copyright (C) 2014 Google Inc.\n\n");
	printf("SPDX-License-Identifier:	GPL-2.0+\n");
}

static void print_usage(const char *name)
{
	printf("usage: %s [-vhdix?] <filename> [<outfile>]\n", name);
	printf("\n"
	       "   -d | --dump:                      dump intel firmware descriptor\n"
	       "   -x | --extract:                   extract intel fd modules\n"
	       "   -i | --inject <region>:<module>   inject file <module> into region <region>\n"
	       "   -w | --write <addr>:<file>        write file to appear at memory address <addr>\n"
771
	       "                                     multiple files can be written simultaneously\n"
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	       "   -s | --spifreq <20|33|50>         set the SPI frequency\n"
	       "   -e | --em100                      set SPI frequency to 20MHz and disable\n"
	       "                                     Dual Output Fast Read Support\n"
	       "   -l | --lock                       Lock firmware descriptor and ME region\n"
	       "   -u | --unlock                     Unlock firmware descriptor and ME region\n"
	       "   -r | --romsize                    Specify ROM size\n"
	       "   -D | --write-descriptor <file>    Write descriptor at base\n"
	       "   -c | --create                     Create a new empty image\n"
	       "   -v | --version:                   print the version\n"
	       "   -h | --help:                      print this help\n\n"
	       "<region> is one of Descriptor, BIOS, ME, GbE, Platform\n"
	       "\n");
}

/**
 * get_two_words() - Convert a string into two words separated by :
 *
 * The supplied string is split at ':', two substrings are allocated and
 * returned.
 *
 * @str:	String to split
 * @firstp:	Returns first string
 * @secondp:	Returns second string
 * @return 0 if OK, -ve if @str does not have a :
 */
static int get_two_words(const char *str, char **firstp, char **secondp)
{
	const char *p;

	p = strchr(str, ':');
	if (!p)
		return -1;
	*firstp = strdup(str);
	(*firstp)[p - str] = '\0';
	*secondp = strdup(p + 1);

	return 0;
}

int main(int argc, char *argv[])
{
	int opt, option_index = 0;
	int mode_dump = 0, mode_extract = 0, mode_inject = 0;
	int mode_spifreq = 0, mode_em100 = 0, mode_locked = 0;
	int mode_unlocked = 0, mode_write = 0, mode_write_descriptor = 0;
817
	int create = 0;
818 819
	char *region_type_string = NULL, *inject_fname = NULL;
	char *desc_fname = NULL, *addr_str = NULL;
820 821
	int region_type = -1, inputfreq = 0;
	enum spi_frequency spifreq = SPI_FREQUENCY_20MHZ;
822
	struct input_file input_file[WRITE_MAX], *ifile, *fdt = NULL;
823
	unsigned char wr_idx, wr_num = 0;
824 825 826 827 828 829
	int rom_size = -1;
	bool write_it;
	char *filename;
	char *outfile = NULL;
	struct stat buf;
	int size = 0;
830
	bool have_uboot = false;
831 832 833 834 835 836 837 838 839
	int bios_fd;
	char *image;
	int ret;
	static struct option long_options[] = {
		{"create", 0, NULL, 'c'},
		{"dump", 0, NULL, 'd'},
		{"descriptor", 1, NULL, 'D'},
		{"em100", 0, NULL, 'e'},
		{"extract", 0, NULL, 'x'},
840
		{"fdt", 1, NULL, 'f'},
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		{"inject", 1, NULL, 'i'},
		{"lock", 0, NULL, 'l'},
		{"romsize", 1, NULL, 'r'},
		{"spifreq", 1, NULL, 's'},
		{"unlock", 0, NULL, 'u'},
846
		{"uboot", 1, NULL, 'U'},
847 848 849 850 851 852
		{"write", 1, NULL, 'w'},
		{"version", 0, NULL, 'v'},
		{"help", 0, NULL, 'h'},
		{0, 0, 0, 0}
	};

853
	while ((opt = getopt_long(argc, argv, "cdD:ef:hi:lr:s:uU:vw:x?",
854 855 856 857 858 859 860 861 862 863
				  long_options, &option_index)) != EOF) {
		switch (opt) {
		case 'c':
			create = 1;
			break;
		case 'd':
			mode_dump = 1;
			break;
		case 'D':
			mode_write_descriptor = 1;
864
			desc_fname = optarg;
865 866 867 868 869 870
			break;
		case 'e':
			mode_em100 = 1;
			break;
		case 'i':
			if (get_two_words(optarg, &region_type_string,
871
					  &inject_fname)) {
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				print_usage(argv[0]);
				exit(EXIT_FAILURE);
			}
			if (!strcasecmp("Descriptor", region_type_string))
				region_type = 0;
			else if (!strcasecmp("BIOS", region_type_string))
				region_type = 1;
			else if (!strcasecmp("ME", region_type_string))
				region_type = 2;
			else if (!strcasecmp("GbE", region_type_string))
				region_type = 3;
			else if (!strcasecmp("Platform", region_type_string))
				region_type = 4;
			if (region_type == -1) {
				fprintf(stderr, "No such region type: '%s'\n\n",
					region_type_string);
				print_usage(argv[0]);
				exit(EXIT_FAILURE);
			}
			mode_inject = 1;
			break;
		case 'l':
			mode_locked = 1;
			break;
		case 'r':
			rom_size = strtol(optarg, NULL, 0);
			debug("ROM size %d\n", rom_size);
			break;
		case 's':
			/* Parse the requested SPI frequency */
			inputfreq = strtol(optarg, NULL, 0);
			switch (inputfreq) {
			case 20:
				spifreq = SPI_FREQUENCY_20MHZ;
				break;
			case 33:
				spifreq = SPI_FREQUENCY_33MHZ;
				break;
			case 50:
				spifreq = SPI_FREQUENCY_50MHZ;
				break;
			default:
				fprintf(stderr, "Invalid SPI Frequency: %d\n",
					inputfreq);
				print_usage(argv[0]);
				exit(EXIT_FAILURE);
			}
			mode_spifreq = 1;
			break;
		case 'u':
			mode_unlocked = 1;
			break;
		case 'v':
			print_version();
			exit(EXIT_SUCCESS);
			break;
		case 'w':
929 930
		case 'U':
		case 'f':
931
			ifile = &input_file[wr_num];
932
			mode_write = 1;
933 934
			if (wr_num < WRITE_MAX) {
				if (get_two_words(optarg, &addr_str,
935
						  &ifile->fname)) {
936 937 938
					print_usage(argv[0]);
					exit(EXIT_FAILURE);
				}
939
				ifile->addr = strtoll(optarg, NULL, 0);
940 941 942 943 944
				wr_num++;
			} else {
				fprintf(stderr,
					"The number of files to write simultaneously exceeds the limitation (%d)\n",
					WRITE_MAX);
945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978
			}
			break;
		case 'x':
			mode_extract = 1;
			break;
		case 'h':
		case '?':
		default:
			print_usage(argv[0]);
			exit(EXIT_SUCCESS);
			break;
		}
	}

	if (mode_locked == 1 && mode_unlocked == 1) {
		fprintf(stderr, "Locking/Unlocking FD and ME are mutually exclusive\n");
		exit(EXIT_FAILURE);
	}

	if (mode_inject == 1 && mode_write == 1) {
		fprintf(stderr, "Inject/Write are mutually exclusive\n");
		exit(EXIT_FAILURE);
	}

	if ((mode_dump + mode_extract + mode_inject +
		(mode_spifreq | mode_em100 | mode_unlocked |
		 mode_locked)) > 1) {
		fprintf(stderr, "You may not specify more than one mode.\n\n");
		print_usage(argv[0]);
		exit(EXIT_FAILURE);
	}

	if ((mode_dump + mode_extract + mode_inject + mode_spifreq +
	     mode_em100 + mode_locked + mode_unlocked + mode_write +
979
	     mode_write_descriptor) == 0 && !create) {
980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995
		fprintf(stderr, "You need to specify a mode.\n\n");
		print_usage(argv[0]);
		exit(EXIT_FAILURE);
	}

	if (create && rom_size == -1) {
		fprintf(stderr, "You need to specify a rom size when creating.\n\n");
		exit(EXIT_FAILURE);
	}

	if (optind + 1 != argc) {
		fprintf(stderr, "You need to specify a file.\n\n");
		print_usage(argv[0]);
		exit(EXIT_FAILURE);
	}

996 997 998 999 1000 1001 1002
	if (have_uboot && !fdt) {
		fprintf(stderr,
			"You must supply a device tree file for U-Boot\n\n");
		print_usage(argv[0]);
		exit(EXIT_FAILURE);
	}

1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058
	filename = argv[optind];
	if (optind + 2 != argc)
		outfile = argv[optind + 1];

	if (create)
		bios_fd = open(filename, O_WRONLY | O_CREAT, 0666);
	else
		bios_fd = open(filename, outfile ? O_RDONLY : O_RDWR);

	if (bios_fd == -1) {
		perror("Could not open file");
		exit(EXIT_FAILURE);
	}

	if (!create) {
		if (fstat(bios_fd, &buf) == -1) {
			perror("Could not stat file");
			exit(EXIT_FAILURE);
		}
		size = buf.st_size;
	}

	debug("File %s is %d bytes\n", filename, size);

	if (rom_size == -1)
		rom_size = size;

	image = malloc(rom_size);
	if (!image) {
		printf("Out of memory.\n");
		exit(EXIT_FAILURE);
	}

	memset(image, '\xff', rom_size);
	if (!create && read(bios_fd, image, size) != size) {
		perror("Could not read file");
		exit(EXIT_FAILURE);
	}
	if (size != rom_size) {
		debug("ROM size changed to %d bytes\n", rom_size);
		size = rom_size;
	}

	write_it = true;
	ret = 0;
	if (mode_dump) {
		ret = dump_fd(image, size);
		write_it = false;
	}

	if (mode_extract) {
		ret = write_regions(image, size);
		write_it = false;
	}

	if (mode_write_descriptor)
1059
		ret = write_data(image, size, -size, desc_fname, 0, 0);
1060 1061

	if (mode_inject)
1062
		ret = inject_region(image, size, region_type, inject_fname);
1063

1064
	if (mode_write) {
1065
		int offset_uboot_top = 0;
1066
		int offset_uboot_start = 0;
1067

1068
		for (wr_idx = 0; wr_idx < wr_num; wr_idx++) {
1069
			ifile = &input_file[wr_idx];
1070 1071 1072
			ret = write_data(image, size, ifile->addr,
					 ifile->fname, offset_uboot_top,
					 offset_uboot_start);
1073
			if (ret < 0)
1074 1075 1076
				break;
		}
	}
1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107

	if (mode_spifreq)
		set_spi_frequency(image, size, spifreq);

	if (mode_em100)
		set_em100_mode(image, size);

	if (mode_locked)
		lock_descriptor(image, size);

	if (mode_unlocked)
		unlock_descriptor(image, size);

	if (write_it) {
		if (outfile) {
			ret = write_image(outfile, image, size);
		} else {
			if (lseek(bios_fd, 0, SEEK_SET)) {
				perror("Error while seeking");
				ret = -1;
			}
			if (write(bios_fd, image, size) != size) {
				perror("Error while writing");
				ret = -1;
			}
		}
	}

	free(image);
	close(bios_fd);

1108
	return ret < 0 ? 1 : 0;
1109
}