#include "prox.h"
#include "proxmark3.h"
+#include "flash.h"
-static uint32_t ExpectedAddr;
-static uint8_t QueuedToSend[256];
-static bool AllWritten;
-#define PHYSICAL_FLASH_START 0x100000
unsigned int current_command = CMD_UNKNOWN;
-void WaitForAck(void) {
- UsbCommand ack;
- ReceiveCommand(&ack);
- if(ack.cmd != CMD_ACK) {
- printf("bad ACK\n");
- exit(-1);
- }
-}
-
-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));
-
- 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).
- */
-static 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);
- }
-}
-
-static 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);
- }
-}
-
-static uint8_t HexByte(char *s)
-{
- return (HexVal(s[0]) << 4) | HexVal(s[1]);
-}
-
-static 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");
-}
-
-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.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;
-}
-
-static 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;
- }
-
-#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;
-}
-
-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);
- 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... ");
- }
-
- CloseProxmark();
- sleep(1);
-
- while(!(devh=OpenProxmark(0))) { sleep(1); }
- fprintf(stderr,"Found.\n");
-
- return GetProxmarkState();
- }
-
- return 0;
-}
+extern struct partition partitions[];
static void usage(char **argv)
{
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++) {
+
+ for(i=0; partitions[i].name != NULL; 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]);
-}
-
-/* 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;
+ fprintf(stderr, "Example: %s os,fpga path/to/osimage.elf path/to/fpgaimage.elf\n", argv[0]);
}
int main(int argc, char **argv) {
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++;
- }
+ do_flash(argv);
- UsbCommand c;
- bzero(&c, sizeof(c));
- c.cmd = CMD_HARDWARE_RESET;
+ UsbCommand c = {CMD_HARDWARE_RESET};
SendCommand(&c);
CloseProxmark();
projects / proxmark3-svn / blobdiff