[proxmark3-svn] / client / flash.c

#ifdef WIN32
#include <windows.h>
#include <setupapi.h>
#define bzero(b,len) (memset((b), '\0', (len)), (void) 0)
BOOL UsbConnect(void);
#endif
#include <proxusb.h>

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "flash.h"
#include "elf.h"

static uint32_t ExpectedAddr;
static uint8_t QueuedToSend[256];
#define PHYSICAL_FLASH_START 0x100000
#define PHYSICAL_FLASH_END   0x200000

void WaitForAck(void)
{
  UsbCommand ack;
  ReceiveCommand(&ack);
  if (ack.cmd != CMD_ACK) {
    printf("bad ACK\n");
    exit(-1);
  }
}

struct partition partitions[] = {
  {0x100000, 0x102000, 1, "bootrom"},
  {0x102000, 0x110000, 0, "fpga"},
  {0x110000, 0x140000, 0, "os"},
  {0, 0, 0, NULL},
};

void WriteBlock(unsigned int block_start, unsigned int len, unsigned char *buf)
{
  unsigned char temp_buf[256];
  if (block_start & 0xFF) {
    printf("moving stuff forward by %d bytes\n", block_start & 0xFF);
    memset(temp_buf, 0xFF, block_start & 0xFF);
    memcpy(temp_buf + (block_start & 0xFF), buf, len - (block_start & 0xFF));
    block_start &= ~0xFF;
  } else {
    memcpy(temp_buf, buf, len);
  }

  UsbCommand c = {CMD_SETUP_WRITE};

  for (int i = 0; i < 240; i += 48) {
    memcpy(c.d.asBytes, temp_buf+i, 48);
    c.arg[0] = (i/4);
    SendCommand(&c);
    WaitForAck();
  }

  c.cmd = CMD_FINISH_WRITE;
  c.arg[0] = block_start;

//  printf("writing block %08x\r", c.arg[0]);
  memcpy(c.d.asBytes, temp_buf+240, 16);
  SendCommand(&c);
  WaitForAck();
}

void LoadFlashFromFile(const char *file, int start_addr, int end_addr)
{
  FILE *f = fopen(file, "rb");
  if (!f) {
    printf("couldn't open file\n");
    exit(-1);
  }

  char buf[4];
  fread(buf, 1, 4, f);
  if (memcmp(buf, "\x7F" "ELF", 4) == 0) {
    fseek(f, 0, SEEK_SET);
    Elf32_Ehdr header;
    fread(&header, 1, sizeof(header), f);
    int count = header.e_phnum;
    printf("count=%d phoff=%x\n", count, header.e_phoff);
    Elf32_Phdr phdr;

    for (int i = 0; i < header.e_phnum; ++i) {
      fseek(f, header.e_phoff + i * sizeof(Elf32_Phdr), SEEK_SET);
      fread(&phdr, 1, sizeof(phdr), f);
      printf("type=%d offset=%x paddr=%x vaddr=%x filesize=%x memsize=%x flags=%x align=%x\n",
        phdr.p_type, phdr.p_offset, phdr.p_paddr, phdr.p_vaddr, phdr.p_filesz, phdr.p_memsz, phdr.p_flags, phdr.p_align);
      if (phdr.p_type == PT_LOAD && phdr.p_filesz > 0 && phdr.p_paddr >= PHYSICAL_FLASH_START
        && (phdr.p_paddr + phdr.p_filesz) < PHYSICAL_FLASH_END) {
        printf("flashing offset=%x paddr=%x size=%x\n", phdr.p_offset, phdr.p_paddr, phdr.p_filesz);
        if (phdr.p_offset == 0) {
          printf("skipping forward 0x2000 because of strange linker thing\n");
          phdr.p_offset += 0x2000;
          phdr.p_paddr += 0x2000;
          phdr.p_filesz -= 0x2000;
          phdr.p_memsz -= 0x2000;
        }

        fseek(f, phdr.p_offset, SEEK_SET);
        ExpectedAddr = phdr.p_paddr;
        while (ExpectedAddr < (phdr.p_paddr + phdr.p_filesz)) {
          unsigned int bytes_to_read = phdr.p_paddr + phdr.p_filesz - ExpectedAddr;
          if (bytes_to_read > 256)
            bytes_to_read=256;
          else
            memset(QueuedToSend, 0xFF, 256);
          fread(QueuedToSend, 1, bytes_to_read, f);
          printf("WriteBlock(%x, %d, %02x %02x %02x %02x %02x %02x %02x %02x ... %02x %02x %02x %02x %02x %02x %02x %02x)\n", ExpectedAddr, bytes_to_read,
            QueuedToSend[0], QueuedToSend[1], QueuedToSend[2], QueuedToSend[3],
            QueuedToSend[4], QueuedToSend[5], QueuedToSend[6], QueuedToSend[7],
            QueuedToSend[248], QueuedToSend[249], QueuedToSend[250], QueuedToSend[251],
            QueuedToSend[252], QueuedToSend[253], QueuedToSend[254], QueuedToSend[255]);
          WriteBlock(ExpectedAddr, 256, QueuedToSend);
          ExpectedAddr += bytes_to_read;
        }
      }
    }

    fclose(f);
    printf("\ndone.\n");
    return;
  } else printf("Bad file format\n");		
}

int PrepareFlash(struct partition *p, const char *filename, unsigned int state)
{
  if (state & DEVICE_INFO_FLAG_UNDERSTANDS_START_FLASH) {
    UsbCommand c = {CMD_START_FLASH, {p->start, p->end, 0}};

    /* Only send magic when flashing bootrom */
    if (p->precious)
      c.arg[2] = START_FLASH_MAGIC;
    else
      c.arg[2] = 0;

    SendCommand(&c);
    WaitForAck();
  } else {
    fprintf(stderr, "Warning: Your bootloader does not understand the new START_FLASH command\n");
    fprintf(stderr, "         It is recommended that you update your bootloader\n\n");
    exit(0);
  }

  LoadFlashFromFile(filename, p->start, p->end);
  return 1;
}

unsigned int GetProxmarkState(void)
{
  unsigned int state = 0;

  UsbCommand c;
  c.cmd = CMD_DEVICE_INFO;
  SendCommand(&c);

  UsbCommand resp;
  ReceiveCommand(&resp);
  /* Three cases: 
  * 1. The old bootrom code will ignore CMD_DEVICE_INFO, but respond with an ACK
  * 2. The old os code will respond with CMD_DEBUG_PRINT_STRING and "unknown command"
  * 3. The new bootrom and os codes will respond with CMD_DEVICE_INFO and flags
  */

  switch (resp.cmd) {
  case CMD_ACK:
    state = DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM;
    break;
  case CMD_DEBUG_PRINT_STRING:
    state = DEVICE_INFO_FLAG_CURRENT_MODE_OS;
    break;
  case CMD_DEVICE_INFO:
    state = resp.arg[0];
    break;
  default:
    fprintf(stderr, "Couldn't get proxmark state, bad response type: 0x%04X\n", resp.cmd);
    exit(-1);
    break;
  }

  return state;
}

unsigned int EnterFlashState(void)
{
  unsigned int state = GetProxmarkState();

  if (state & DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM) {
    /* Already in flash state, we're done. */
    return state;
  }

  if (state & DEVICE_INFO_FLAG_CURRENT_MODE_OS) {
    fprintf(stderr,"Entering flash-mode...\n");
    UsbCommand c;
    bzero(&c, sizeof(c));

    if ((state & DEVICE_INFO_FLAG_BOOTROM_PRESENT) && (state & DEVICE_INFO_FLAG_OSIMAGE_PRESENT)) {
      /* New style handover: Send CMD_START_FLASH, which will reset the board and
       * enter the bootrom on the next boot.
      */
      c.cmd = CMD_START_FLASH;
      SendCommand(&c);
      fprintf(stderr,"(You don't have to do anything. Press and release the button only if you want to abort)\n");
      fprintf(stderr,"Waiting for Proxmark to reappear on USB... ");
    } else {
      /* Old style handover: Ask the user to press the button, then reset the board */
      c.cmd = CMD_HARDWARE_RESET;
      SendCommand(&c);
      fprintf(stderr,"(Press and hold down button NOW if your bootloader requires it)\n");
      fprintf(stderr,"Waiting for Proxmark to reappear on USB... ");
    }

#ifdef WIN32
    Sleep(1000);
    while (!UsbConnect()) { Sleep(1000); }
#else
    CloseProxmark();
    sleep(1);

    while (!OpenProxmark(0)) { sleep(1); }
#endif
    fprintf(stderr,"Found.\n");

    return GetProxmarkState();
  }

  return 0;
}

/* On first call, have *offset = -1, *length = 0; */
int find_next_area(const char *str, int *offset, int *length)
{
  if (*str == '\0') return 0;
  if ((*offset >= 0) && str[*offset + *length] == '\0') return 0;
  *offset += 1 + *length;

  char *next_comma = strchr(str + *offset, ',');
  if (next_comma == NULL) {
    *length = strlen(str) - *offset;
  } else {
    *length = next_comma-(str+*offset);
  }
  return 1;
}

void do_flash(char **argv)
{
  unsigned int state = EnterFlashState();

  if (!(state & DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM)) {
    fprintf(stderr, "Proxmark would not enter flash state, abort\n");
    exit(-1);
  }

  int offset=-1, length=0;
  int current_area = 0;
  while (find_next_area(argv[1], &offset, &length)) {
    struct partition *p = NULL;
    for (int i = 0; i<sizeof(partitions)/sizeof(partitions[0]); ++i) {
      if (strncmp(partitions[i].name, argv[1] + offset, length) == 0) {
        /* Check if the name matches the bootrom partition, and if so, require "bootrom" to
         * be written in full. The other names may be abbreviated.
        */
        if(!partitions[i].precious || (strlen(partitions[i].name) == length))
          p = &partitions[i];
        break;
      }
    }

    if (p == NULL) {
      fprintf(stderr, "Warning: area name '");
      fwrite(argv[1]+offset, length, 1, stderr);
      fprintf(stderr, "' unknown, ignored\n");
    } else {
      fprintf(stderr, "Flashing %s from %s\n", p->name, argv[2+current_area]);
      PrepareFlash(p, argv[2+current_area], state);
    }
    current_area++;
  }
}
Commit	Line	Data
6e4d4ee6	1	#ifdef WIN32
	2	#include <windows.h>
	3	#include <setupapi.h>
6e4d4ee6	4	#define bzero(b,len) (memset((b), '\0', (len)), (void) 0)
6e4d4ee6	5	BOOL UsbConnect(void);
6e4d4ee6	6	#endif
3ec3a472	7	#include <proxusb.h>
7fe9b0b7	8
6e4d4ee6	9	#include <stdio.h>
6e4d4ee6	10	#include <string.h>
83a9b236	11	#include <stdlib.h>
6e4d4ee6	12	#include "flash.h"
2cab856f	13	#include "elf.h"
6e4d4ee6	14
	15	static uint32_t ExpectedAddr;
	16	static uint8_t QueuedToSend[256];
6e4d4ee6	17	#define PHYSICAL_FLASH_START 0x100000
2cab856f	18	#define PHYSICAL_FLASH_END 0x200000
6e4d4ee6	19
7fe9b0b7	20	void WaitForAck(void)
	21	{
	22	UsbCommand ack;
	23	ReceiveCommand(&ack);
	24	if (ack.cmd != CMD_ACK) {
	25	printf("bad ACK\n");
	26	exit(-1);
	27	}
6e4d4ee6	28	}
	29
	30	struct partition partitions[] = {
7fe9b0b7	31	{0x100000, 0x102000, 1, "bootrom"},
	32	{0x102000, 0x110000, 0, "fpga"},
	33	{0x110000, 0x140000, 0, "os"},
	34	{0, 0, 0, NULL},
6e4d4ee6	35	};
6e4d4ee6	36
2cab856f	37	void WriteBlock(unsigned int block_start, unsigned int len, unsigned char *buf)
6e4d4ee6	38	{
7fe9b0b7	39	unsigned char temp_buf[256];
	40	if (block_start & 0xFF) {
	41	printf("moving stuff forward by %d bytes\n", block_start & 0xFF);
	42	memset(temp_buf, 0xFF, block_start & 0xFF);
	43	memcpy(temp_buf + (block_start & 0xFF), buf, len - (block_start & 0xFF));
	44	block_start &= ~0xFF;
	45	} else {
	46	memcpy(temp_buf, buf, len);
	47	}
	48
	49	UsbCommand c = {CMD_SETUP_WRITE};
	50
	51	for (int i = 0; i < 240; i += 48) {
	52	memcpy(c.d.asBytes, temp_buf+i, 48);
	53	c.arg[0] = (i/4);
	54	SendCommand(&c);
	55	WaitForAck();
	56	}
	57
	58	c.cmd = CMD_FINISH_WRITE;
	59	c.arg[0] = block_start;
	60
	61	// printf("writing block %08x\r", c.arg[0]);
	62	memcpy(c.d.asBytes, temp_buf+240, 16);
	63	SendCommand(&c);
	64	WaitForAck();
6e4d4ee6	65	}
6e4d4ee6	66
2cab856f	67	void LoadFlashFromFile(const char *file, int start_addr, int end_addr)
6e4d4ee6	68	{
7fe9b0b7	69	FILE *f = fopen(file, "rb");
	70	if (!f) {
	71	printf("couldn't open file\n");
	72	exit(-1);
	73	}
	74
	75	char buf[4];
	76	fread(buf, 1, 4, f);
	77	if (memcmp(buf, "\x7F" "ELF", 4) == 0) {
	78	fseek(f, 0, SEEK_SET);
	79	Elf32_Ehdr header;
	80	fread(&header, 1, sizeof(header), f);
	81	int count = header.e_phnum;
	82	printf("count=%d phoff=%x\n", count, header.e_phoff);
	83	Elf32_Phdr phdr;
	84
	85	for (int i = 0; i < header.e_phnum; ++i) {
	86	fseek(f, header.e_phoff + i * sizeof(Elf32_Phdr), SEEK_SET);
	87	fread(&phdr, 1, sizeof(phdr), f);
	88	printf("type=%d offset=%x paddr=%x vaddr=%x filesize=%x memsize=%x flags=%x align=%x\n",
	89	phdr.p_type, phdr.p_offset, phdr.p_paddr, phdr.p_vaddr, phdr.p_filesz, phdr.p_memsz, phdr.p_flags, phdr.p_align);
	90	if (phdr.p_type == PT_LOAD && phdr.p_filesz > 0 && phdr.p_paddr >= PHYSICAL_FLASH_START
	91	&& (phdr.p_paddr + phdr.p_filesz) < PHYSICAL_FLASH_END) {
	92	printf("flashing offset=%x paddr=%x size=%x\n", phdr.p_offset, phdr.p_paddr, phdr.p_filesz);
	93	if (phdr.p_offset == 0) {
	94	printf("skipping forward 0x2000 because of strange linker thing\n");
	95	phdr.p_offset += 0x2000;
	96	phdr.p_paddr += 0x2000;
	97	phdr.p_filesz -= 0x2000;
	98	phdr.p_memsz -= 0x2000;
2cab856f	99	}
6e4d4ee6	100
7fe9b0b7	101	fseek(f, phdr.p_offset, SEEK_SET);
	102	ExpectedAddr = phdr.p_paddr;
	103	while (ExpectedAddr < (phdr.p_paddr + phdr.p_filesz)) {
	104	unsigned int bytes_to_read = phdr.p_paddr + phdr.p_filesz - ExpectedAddr;
	105	if (bytes_to_read > 256)
	106	bytes_to_read=256;
	107	else
	108	memset(QueuedToSend, 0xFF, 256);
	109	fread(QueuedToSend, 1, bytes_to_read, f);
	110	printf("WriteBlock(%x, %d, %02x %02x %02x %02x %02x %02x %02x %02x ... %02x %02x %02x %02x %02x %02x %02x %02x)\n", ExpectedAddr, bytes_to_read,
	111	QueuedToSend[0], QueuedToSend[1], QueuedToSend[2], QueuedToSend[3],
	112	QueuedToSend[4], QueuedToSend[5], QueuedToSend[6], QueuedToSend[7],
	113	QueuedToSend[248], QueuedToSend[249], QueuedToSend[250], QueuedToSend[251],
	114	QueuedToSend[252], QueuedToSend[253], QueuedToSend[254], QueuedToSend[255]);
	115	WriteBlock(ExpectedAddr, 256, QueuedToSend);
	116	ExpectedAddr += bytes_to_read;
	117	}
	118	}
	119	}
	120
	121	fclose(f);
	122	printf("\ndone.\n");
	123	return;
	124	} else printf("Bad file format\n");
6e4d4ee6	125	}
	126
	127	int PrepareFlash(struct partition p, const char filename, unsigned int state)
	128	{
7fe9b0b7	129	if (state & DEVICE_INFO_FLAG_UNDERSTANDS_START_FLASH) {
	130	UsbCommand c = {CMD_START_FLASH, {p->start, p->end, 0}};
	131
	132	/* Only send magic when flashing bootrom */
	133	if (p->precious)
	134	c.arg[2] = START_FLASH_MAGIC;
	135	else
	136	c.arg[2] = 0;
	137
	138	SendCommand(&c);
	139	WaitForAck();
	140	} else {
	141	fprintf(stderr, "Warning: Your bootloader does not understand the new START_FLASH command\n");
	142	fprintf(stderr, " It is recommended that you update your bootloader\n\n");
	143	exit(0);
	144	}
	145
	146	LoadFlashFromFile(filename, p->start, p->end);
	147	return 1;
6e4d4ee6	148	}
	149
	150	unsigned int GetProxmarkState(void)
	151	{
7fe9b0b7	152	unsigned int state = 0;
	153
	154	UsbCommand c;
	155	c.cmd = CMD_DEVICE_INFO;
	156	SendCommand(&c);
	157
	158	UsbCommand resp;
	159	ReceiveCommand(&resp);
	160	/* Three cases:
	161	* 1. The old bootrom code will ignore CMD_DEVICE_INFO, but respond with an ACK
	162	* 2. The old os code will respond with CMD_DEBUG_PRINT_STRING and "unknown command"
	163	* 3. The new bootrom and os codes will respond with CMD_DEVICE_INFO and flags
	164	*/
	165
	166	switch (resp.cmd) {
	167	case CMD_ACK:
	168	state = DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM;
	169	break;
	170	case CMD_DEBUG_PRINT_STRING:
	171	state = DEVICE_INFO_FLAG_CURRENT_MODE_OS;
	172	break;
	173	case CMD_DEVICE_INFO:
	174	state = resp.arg[0];
	175	break;
	176	default:
	177	fprintf(stderr, "Couldn't get proxmark state, bad response type: 0x%04X\n", resp.cmd);
	178	exit(-1);
	179	break;
	180	}
	181
	182	return state;
6e4d4ee6	183	}
	184
	185	unsigned int EnterFlashState(void)
	186	{
7fe9b0b7	187	unsigned int state = GetProxmarkState();
	188
	189	if (state & DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM) {
	190	/* Already in flash state, we're done. */
	191	return state;
	192	}
	193
	194	if (state & DEVICE_INFO_FLAG_CURRENT_MODE_OS) {
	195	fprintf(stderr,"Entering flash-mode...\n");
	196	UsbCommand c;
	197	bzero(&c, sizeof(c));
	198
	199	if ((state & DEVICE_INFO_FLAG_BOOTROM_PRESENT) && (state & DEVICE_INFO_FLAG_OSIMAGE_PRESENT)) {
	200	/* New style handover: Send CMD_START_FLASH, which will reset the board and
	201	* enter the bootrom on the next boot.
	202	*/
	203	c.cmd = CMD_START_FLASH;
	204	SendCommand(&c);
	205	fprintf(stderr,"(You don't have to do anything. Press and release the button only if you want to abort)\n");
	206	fprintf(stderr,"Waiting for Proxmark to reappear on USB... ");
	207	} else {
	208	/* Old style handover: Ask the user to press the button, then reset the board */
	209	c.cmd = CMD_HARDWARE_RESET;
	210	SendCommand(&c);
	211	fprintf(stderr,"(Press and hold down button NOW if your bootloader requires it)\n");
	212	fprintf(stderr,"Waiting for Proxmark to reappear on USB... ");
	213	}
6e4d4ee6	214
6e4d4ee6	215	#ifdef WIN32
7fe9b0b7	216	Sleep(1000);
7fe9b0b7	217	while (!UsbConnect()) { Sleep(1000); }
6e4d4ee6	218	#else
7fe9b0b7	219	CloseProxmark();
7fe9b0b7	220	sleep(1);
6e4d4ee6	221
7fe9b0b7	222	while (!OpenProxmark(0)) { sleep(1); }
6e4d4ee6	223	#endif
7fe9b0b7	224	fprintf(stderr,"Found.\n");
	225
	226	return GetProxmarkState();
	227	}
6e4d4ee6	228
7fe9b0b7	229	return 0;
6e4d4ee6	230	}
	231
	232	/* On first call, have offset = -1, length = 0; */
	233	int find_next_area(const char str, int offset, int *length)
	234	{
7fe9b0b7	235	if (*str == '\0') return 0;
	236	if ((offset >= 0) && str[offset + *length] == '\0') return 0;
	237	offset += 1 + length;
	238
	239	char next_comma = strchr(str + offset, ',');
	240	if (next_comma == NULL) {
	241	length = strlen(str) - offset;
	242	} else {
	243	length = next_comma-(str+offset);
	244	}
	245	return 1;
6e4d4ee6	246	}
6e4d4ee6	247
7fe9b0b7	248	void do_flash(char **argv)
	249	{
	250	unsigned int state = EnterFlashState();
	251
	252	if (!(state & DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM)) {
	253	fprintf(stderr, "Proxmark would not enter flash state, abort\n");
	254	exit(-1);
	255	}
	256
	257	int offset=-1, length=0;
	258	int current_area = 0;
	259	while (find_next_area(argv[1], &offset, &length)) {
	260	struct partition *p = NULL;
	261	for (int i = 0; i<sizeof(partitions)/sizeof(partitions[0]); ++i) {
	262	if (strncmp(partitions[i].name, argv[1] + offset, length) == 0) {
	263	/* Check if the name matches the bootrom partition, and if so, require "bootrom" to
	264	* be written in full. The other names may be abbreviated.
	265	*/
	266	if(!partitions[i].precious \|\| (strlen(partitions[i].name) == length))
	267	p = &partitions[i];
	268	break;
	269	}
	270	}
	271
	272	if (p == NULL) {
	273	fprintf(stderr, "Warning: area name '");
	274	fwrite(argv[1]+offset, length, 1, stderr);
	275	fprintf(stderr, "' unknown, ignored\n");
	276	} else {
	277	fprintf(stderr, "Flashing %s from %s\n", p->name, argv[2+current_area]);
	278	PrepareFlash(p, argv[2+current_area], state);
	279	}
	280	current_area++;
	281	}
6e4d4ee6	282	}