+#ifdef WIN32
+#include <windows.h>
+#include <setupapi.h>
+#include <ctype.h>
+#define bzero(b,len) (memset((b), '\0', (len)), (void) 0)
+BOOL UsbConnect(void);
+#else
+#include <usb.h>
+#endif
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <strings.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+
+#include "prox.h"
+#ifndef WIN32
+#include "proxmark3.h"
+#endif
+#include "flash.h"
+
+static uint32_t ExpectedAddr;
+static uint8_t QueuedToSend[256];
+static bool AllWritten;
+#define PHYSICAL_FLASH_START 0x100000
+
+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},
+};
+
+/* If translate is set, subtract PHYSICAL_FLASH_START to translate for old
+ * bootroms.
+ */
+void FlushPrevious(int translate)
+{
+ UsbCommand c;
+ memset(&c, 0, sizeof(c));
+
+ printf("expected = %08x flush, ", ExpectedAddr);
+
+ int i;
+ for(i = 0; i < 240; i += 48) {
+ c.cmd = CMD_SETUP_WRITE;
+ memcpy(c.d.asBytes, QueuedToSend+i, 48);
+ c.arg[0] = (i/4);
+ SendCommand(&c);
+ WaitForAck();
+ }
+
+ c.cmd = CMD_FINISH_WRITE;
+ c.arg[0] = (ExpectedAddr-1) & (~255);
+ if(translate) {
+ c.arg[0] -= PHYSICAL_FLASH_START;
+ }
+ printf("c.arg[0] = %08x\r", c.arg[0]);
+ memcpy(c.d.asBytes, QueuedToSend+240, 16);
+ SendCommand(&c);
+ WaitForAck();
+
+ AllWritten = true;
+}
+
+/* Where must be between start_addr (inclusive) and end_addr (exclusive).
+ */
+void GotByte(uint32_t where, uint8_t 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);
+ exit(-1);
+ }
+ QueuedToSend[where & 255] = which;
+ ExpectedAddr++;
+
+ if((where & 255) == 255) {
+ // we have completed a full page
+ FlushPrevious(translate);
+ }
+}
+
+int HexVal(int c)
+{
+ c = tolower(c);
+ if(c >= '0' && c <= '9') {
+ return c - '0';
+ } else if(c >= 'a' && c <= 'f') {
+ return (c - 'a') + 10;
+ } else {
+ printf("bad hex digit '%c'\n", c);
+ exit(-1);
+ }
+}
+
+uint8_t HexByte(char *s)
+{
+ return (HexVal(s[0]) << 4) | HexVal(s[1]);
+}
+
+void LoadFlashFromSRecords(const char *file, int start_addr, int end_addr, int translate)
+{
+ ExpectedAddr = start_addr;
+
+ FILE *f = fopen(file, "r");
+ if(!f) {
+ printf("couldn't open file\n");
+ exit(-1);
+ }
+
+ char line[512];
+ while(fgets(line, sizeof(line), f)) {
+ if(memcmp(line, "S3", 2)==0) {
+ char *s = line + 2;
+ int len = HexByte(s) - 5;
+ s += 2;
+
+ char addrStr[9];
+ memcpy(addrStr, s, 8);
+ addrStr[8] = '\0';
+ uint32_t 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, start_addr, end_addr, translate);
+ }
+ GotByte(addr+i, HexByte(s), start_addr, end_addr, translate);
+ s += 2;
+ }
+ }
+ }
+
+ if(!AllWritten) FlushPrevious(translate);
+
+ fclose(f);
+ printf("\ndone.\n");
+}
+
+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.arg[0] = p->start;
+ c.arg[1] = p->end;
+
+ /* Only send magic when flashing bootrom */
+ if(p->precious) {
+ c.arg[2] = START_FLASH_MAGIC;
+ } else {
+ c.arg[2] = 0;
+ }
+ SendCommand(&c);
+ WaitForAck();
+ 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;
+}
+
+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(!(devh=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)) {
+ 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++;
+ }
+}
projects / proxmark3-svn / commitdiff