diff options
Diffstat (limited to 'src/main.c')
| -rw-r--r-- | src/main.c | 125 |
1 files changed, 108 insertions, 17 deletions
@@ -69,6 +69,7 @@ static void dump_platform_info(nv3p_platform_info_t *info); static int download_bct(nv3p_handle_t h3p, char *filename); static int download_bootloader(nv3p_handle_t h3p, char *filename, uint32_t entry, uint32_t loadaddr); +static int read_bct(nv3p_handle_t h3p, char *filename); enum cmdline_opts { OPT_BCT, @@ -88,6 +89,14 @@ static void print_version(char *progname) static void usage(char *progname) { fprintf(stderr, "usage: %s [options] --bct=bctfile --bootloader=blfile --loadaddr=<loadaddr>\n", progname); + fprintf(stderr, " %s [options] --bct=bctfile readbct\n", progname); + fprintf(stderr, "\n"); + fprintf(stderr, "Commands:\n"); + fprintf(stderr, "\treadbct\n"); + fprintf(stderr, "\t\tRead the BCT from the target device and write to bctfile\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "\tDefault operation if no command is specified will download BCT and\n"); + fprintf(stderr, "\tbootloader to device and start execution of bootloader\n"); fprintf(stderr, "\n"); fprintf(stderr, "Options:\n"); fprintf(stderr, "\t--entryaddr=<entryaddr>\n"); @@ -116,6 +125,7 @@ int main(int argc, char **argv) uint32_t loadaddr = 0; uint32_t entryaddr = 0; uint16_t devid; + int do_read = 0; static struct option long_options[] = { [OPT_BCT] = {"bct", 1, 0, 0}, @@ -152,6 +162,7 @@ int main(int argc, char **argv) case OPT_VERSION: print_version(argv[0]); exit(0); + break; case OPT_HELP: default: usage(argv[0]); @@ -165,29 +176,43 @@ int main(int argc, char **argv) } } + while (optind < argc) { + if (!(strcmp(argv[optind], "readbct"))) + do_read = 1; + else { + fprintf(stderr, "%s: Unknown command line argument: %s\n", + argv[0], argv[optind]); + usage(argv[0]); + exit(EXIT_FAILURE); + } + optind++; + } + if (bctfile == NULL) { fprintf(stderr, "BCT file must be specified\n"); usage(argv[0]); exit(EXIT_FAILURE); } - if (blfile == NULL) { - fprintf(stderr, "bootloader file must be specified\n"); - usage(argv[0]); - exit(EXIT_FAILURE); - } - if (loadaddr == 0) { - fprintf(stderr, "loadaddr must be specified\n"); - usage(argv[0]); - exit(EXIT_FAILURE); - } - if (entryaddr == 0) { - entryaddr = loadaddr; - } - printf("bct file: %s\n", bctfile); - printf("booloader file: %s\n", blfile); - printf("load addr 0x%x\n", loadaddr); - printf("entry addr 0x%x\n", entryaddr); + + if (!do_read) { + if (blfile == NULL) { + fprintf(stderr, "bootloader file must be specified\n"); + usage(argv[0]); + exit(EXIT_FAILURE); + } + if (loadaddr == 0) { + fprintf(stderr, "loadaddr must be specified\n"); + usage(argv[0]); + exit(EXIT_FAILURE); + } + if (entryaddr == 0) { + entryaddr = loadaddr; + } + printf("booloader file: %s\n", blfile); + printf("load addr 0x%x\n", loadaddr); + printf("entry addr 0x%x\n", entryaddr); + } usb = usb_open(USB_VENID_NVIDIA, &devid); if (!usb) @@ -219,6 +244,16 @@ int main(int argc, char **argv) if (ret) error(1, errno, "3p open failed"); + // read the BCT + if (do_read) { + printf("reading BCT from system, writing to %s...", bctfile); + ret = read_bct(h3p, bctfile); + if (ret) + error(1, errno, "error reading bct"); + printf("done!\n"); + exit(0); + } + // get platform info and dump it ret = nv3p_cmd_send(h3p, NV3P_CMD_GET_PLATFORM_INFO, (uint8_t *)&info); if (ret) @@ -595,6 +630,62 @@ static int download_bct(nv3p_handle_t h3p, char *filename) } +static int read_bct(nv3p_handle_t h3p, char *filename) +{ + int ret; + nv3p_bct_info_t bct_info; + uint8_t *bct_data = NULL; + int fd = -1; + uint8_t *buf; + + ret = nv3p_cmd_send(h3p, NV3P_CMD_GET_BCT, (uint8_t *)&bct_info); + if (ret) { + dprintf("error sending get bct command\n"); + goto out; + } + ret = wait_status(h3p); + if (ret) { + dprintf("error waiting for status after get bct\n"); + goto out; + } + + bct_data = (uint8_t *)malloc(bct_info.length); + ret = nv3p_data_recv(h3p, bct_data, bct_info.length); + if (ret) { + dprintf("error retreiving bct data\n"); + goto out; + } + + fd = open(filename, O_WRONLY | O_CREAT, 0644); + if (fd < 0) { + dprintf("error opening %s for reading\n", filename); + ret = errno; + goto out; + } + + buf = bct_data; + while(bct_info.length > 0) { + ssize_t written = write(fd, buf, bct_info.length); + if (written == -1) { + if (errno == EINTR) + continue; + dprintf("error writing to %s\n", filename); + ret = errno; + goto out; + } + buf += written; + bct_info.length -= written; + } + + ret = 0; +out: + if (bct_data) + free(bct_data); + if (fd >= 0) + close(fd); + return ret; +} + static int download_bootloader(nv3p_handle_t h3p, char *filename, uint32_t entry, uint32_t loadaddr) { |