X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/6658905f18a1eebc148836f26c731dea9c1377dc..a93bd81d884b1dcadd46939a67328413e87e1ee1:/linux/flasher.c?ds=sidebyside

diff --git a/linux/flasher.c b/linux/flasher.c
index 05f31249..8797becf 100644
--- a/linux/flasher.c
+++ b/linux/flasher.c
@@ -14,8 +14,24 @@
 static DWORD ExpectedAddr;
 static BYTE QueuedToSend[256];
 static BOOL AllWritten;
+#define PHYSICAL_FLASH_START 0x100000
 
-static void FlushPrevious(void)
+struct partition {
+	int start;
+	int end;
+	int precious;
+	const char *name;
+};
+struct partition partitions[] = {
+		{0x100000, 0x102000, 1, "bootrom"},
+		{0x102000, 0x110000, 0, "fpga"},
+		{0x110000, 0x140000, 0, "os"},
+};
+
+/* If translate is set, subtract PHYSICAL_FLASH_START to translate for old
+ * bootroms.
+ */
+static void FlushPrevious(int translate)
 {
 	UsbCommand c;
 	memset(&c, 0, sizeof(c));
@@ -32,6 +48,9 @@ static void FlushPrevious(void)
 
 	c.cmd = CMD_FINISH_WRITE;
 	c.ext1 = (ExpectedAddr-1) & (~255);
+	if(translate) {
+		c.ext1 -= PHYSICAL_FLASH_START;
+	}
 	printf("c.ext1 = %08x\r", c.ext1);
 	memcpy(c.d.asBytes, QueuedToSend+240, 16);
 	SendCommand(&c, TRUE);
@@ -39,9 +58,16 @@ static void FlushPrevious(void)
 	AllWritten = TRUE;
 }
 
-static void GotByte(DWORD where, BYTE which)
+/* Where must be between start_addr (inclusive) and end_addr (exclusive).
+ */
+static void GotByte(DWORD where, BYTE which, int start_addr, int end_addr, int translate)
 {
 	AllWritten = FALSE;
+	
+	if(where < start_addr || where >= end_addr) {
+		printf("bad: got byte at %08x, outside of range %08x-%08x\n", where, start_addr, end_addr);
+		exit(-1);
+	}
 
 	if(where != ExpectedAddr) {
 		printf("bad: got at %08x, expected at %08x\n", where, ExpectedAddr);
@@ -52,7 +78,7 @@ static void GotByte(DWORD where, BYTE which)
 
 	if((where & 255) == 255) {
 		// we have completed a full page
-		FlushPrevious();
+		FlushPrevious(translate);
 	}
 }
 
@@ -74,10 +100,10 @@ static BYTE HexByte(char *s)
 	return (HexVal(s[0]) << 4) | HexVal(s[1]);
 }
 
-static void LoadFlashFromSRecords(char *file, int addr)
+static void LoadFlashFromSRecords(const char *file, int start_addr, int end_addr, int translate)
 {
-	ExpectedAddr = addr;
-
+	ExpectedAddr = start_addr;
+	
 	FILE *f = fopen(file, "r");
 	if(!f) {
 		printf("couldn't open file\n");
@@ -97,63 +123,226 @@ static void LoadFlashFromSRecords(char *file, int addr)
 			DWORD addr;
 			sscanf(addrStr, "%x", &addr);
 			s += 8;
+			
+			/* Accept files that are located at PHYSICAL_FLASH_START, and files that are located at 0 */
+			if(addr < PHYSICAL_FLASH_START) 
+				addr += PHYSICAL_FLASH_START;
 
 			int i;
 			for(i = 0; i < len; i++) {
 				while((addr+i) > ExpectedAddr) {
-					GotByte(ExpectedAddr, 0xff);
+					GotByte(ExpectedAddr, 0xff, start_addr, end_addr, translate);
 				}
-				GotByte(addr+i, HexByte(s));
+				GotByte(addr+i, HexByte(s), start_addr, end_addr, translate);
 				s += 2;
 			}
 		}
 	}
 
-	if(!AllWritten) FlushPrevious();
+	if(!AllWritten) FlushPrevious(translate);
 
 	fclose(f);
 	printf("\ndone.\n");
 }
 
-int main(int argc, char **argv) {
-	unsigned int addr = 0;
-	UsbCommand c;
+static int PrepareFlash(struct partition *p, const char *filename, unsigned int state)
+{
+	int translate = 0;
+	if(state & DEVICE_INFO_FLAG_UNDERSTANDS_START_FLASH) {
+		UsbCommand c;
+		c.cmd = CMD_START_FLASH;
+		c.ext1 = p->start;
+		c.ext2 = p->end;
+		
+		/* Only send magic when flashing bootrom */
+		if(p->precious) {
+			c.ext3 = START_FLASH_MAGIC;
+		} else {
+			c.ext3 = 0;
+		}
+		SendCommand(&c, TRUE);
+		translate = 0;
+	} 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");
+		translate = 1;
+	}
+	
+	LoadFlashFromSRecords(filename, p->start, p->end, translate);
+	return 1;
+}
 
-	if (argc != 3) {
-		fprintf(stderr,"Usage: %s {bootrom|os|fpga} image.s19\n", argv[0]);
-		exit(EXIT_FAILURE);
+static unsigned int GetProxmarkState(void)
+{
+	unsigned int state = 0;
+	
+	UsbCommand c;
+	c.cmd = CMD_DEVICE_INFO;
+	SendCommand(&c, FALSE);
+	
+	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.ext1;
+		break;
+	default:
+		fprintf(stderr, "Couldn't get proxmark state, bad response type: 0x%04X\n", resp.cmd);
+		exit(-1);
+		break;
 	}
+	
+#if 0
+	if(state & DEVICE_INFO_FLAG_BOOTROM_PRESENT) printf("New bootrom present\n");
+	if(state & DEVICE_INFO_FLAG_OSIMAGE_PRESENT) printf("New osimage present\n");
+	if(state & DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM) printf("Currently in bootrom\n");
+	if(state & DEVICE_INFO_FLAG_CURRENT_MODE_OS) printf("Currently in OS\n");
+#endif
+	
+	return state;
+}
 
-	if (!strcmp(argv[1],"bootrom")) {
-		addr = 0;
-	} else if (!strcmp(argv[1],"os")) {
-		addr = 0x10000;
-	} else if (!strcmp(argv[1],"fpga")) {
-		addr = 0x2000;
-	} else {
-		fprintf(stderr,"Unknown action '%s'!\n", argv[1]);
-		exit(EXIT_FAILURE);
+static 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, FALSE);
+			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, FALSE);
+			fprintf(stderr,"(Press and hold down button NOW if your bootloader requires it)\n");
+			fprintf(stderr,"Waiting for Proxmark to reappear on USB... ");
+		}
+		
+		CloseProxmark();
+		sleep(1);
 
-	usb_init();
+		while(!(devh=OpenProxmark(0))) { sleep(1); }
+		fprintf(stderr,"Found.\n");
 
-	fprintf(stderr,"Waiting for Proxmark to appear on USB...\n");
-	while(!(devh=OpenProxmark(0))) { sleep(1); }
-	fprintf(stderr,"Found...\n");
+		return GetProxmarkState();
+	}
+	
+	return 0;
+}
 
-	fprintf(stderr,"Entering flash-mode...\n");
-	bzero(&c, sizeof(c));
-	c.cmd = CMD_START_FLASH;
-	SendCommand(&c, FALSE);
-	CloseProxmark();
-	sleep(1);
+static void usage(char **argv)
+{
+	int i;
+	fprintf(stderr, "Usage:   %s areas image [image [image]]\n", argv[0]);
+	fprintf(stderr, "         areas is a comma-separated list of areas to flash, with no spaces\n");
+	fprintf(stderr, "               Known areas are:");
+	for(i=0; i<(sizeof(partitions)/sizeof(partitions[0])); i++) {
+		fprintf(stderr, " %s", partitions[i].name);
+	}
+	fprintf(stderr, "\n");
+	fprintf(stderr, "         image is the path to the corresponding image\n\n");
+	fprintf(stderr, "Example: %s os,fpga path/to/osimage.s19 path/to/fpgaimage.s19\n", argv[0]);
+}
 
-	fprintf(stderr,"Waiting for Proxmark to reappear on USB...\n");
-	while(!(devh=OpenProxmark(0))) { sleep(1); }
-	fprintf(stderr,"Found...\n");
+/* On first call, have *offset = -1, *length = 0; */
+static 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;
+}
 
-	LoadFlashFromSRecords(argv[2], addr);
+int main(int argc, char **argv) {
+	if(argc < 2) {
+		usage(argv);
+		exit(-1);
+	}
+	
+	/* Count area arguments */
+	int areas = 0, offset=-1, length=0;
+	while(find_next_area(argv[1], &offset, &length)) areas++;
+	
+	if(areas != argc - 2) {
+		usage(argv);
+		exit(-1);
+	}
+	
+	usb_init();
 
+	fprintf(stderr,"Waiting for Proxmark to appear on USB... ");
+	while(!(devh=OpenProxmark(0))) { sleep(1); }
+	fprintf(stderr,"Found.\n");
+	
+	unsigned int state = EnterFlashState();
+	
+	if( !(state & DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM) ) {
+		fprintf(stderr, "Proxmark would not enter flash state, abort\n");
+		exit(-1);
+	}
+	
+	offset=-1; length=0;
+	int current_area = 0;
+	while(find_next_area(argv[1], &offset, &length)) {
+		int i;
+		struct partition *p = NULL;
+		for(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++;
+	}
+	
+	UsbCommand c;
 	bzero(&c, sizeof(c));
 	c.cmd = CMD_HARDWARE_RESET;
 	SendCommand(&c, FALSE);