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fomu-flash: implement -k security register stuff

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2018-12-18 23:03:38 -05:00
parent ff1f8583af
commit 9b1b9b8a88
1 changed files with 52 additions and 5 deletions
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57
fomu-flash.c
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@ -71,6 +71,8 @@ enum op {
OP_SPI_VERIFY,
OP_SPI_PEEK,
OP_SPI_ID,
OP_SPI_SECURITY_READ,
OP_SPI_SECURITY_WRITE,
OP_FPGA_BOOT,
OP_FPGA_RESET,
OP_UNKNOWN,
@ -122,13 +124,14 @@ static int print_program_modes(FILE *stream) {
fprintf(stream, " -w bin Write this binary into the SPI flash chip\n");
fprintf(stream, " -v bin Verify the SPI flash contains this data\n");
fprintf(stream, " -s out Save the SPI flash contents to this file\n");
fprintf(stream, " -k n[:f] Read security register [n], or update it with the contents of file [f]\n");
return 0;
}
static int print_help(FILE *stream, const char *progname) {
fprintf(stream, "Fomu Raspberry Pi Flash Utilities\n");
fprintf(stream, "Usage:\n");
fprintf(stream, "%15s (-[hri] | [-p offset] | [-f bin] | [-w bin] | [-v bin] | [-s out])\n", progname);
fprintf(stream, "%15s (-[hri] | [-p offset] | [-f bin] | [-w bin] | [-v bin] | [-s out] | [-k n[:f]])\n", progname);
fprintf(stream, " [-g pinspec] [-t spitype] [-r]\n");
fprintf(stream, "Program mode (pick one):\n");
print_program_modes(stream);
@ -160,6 +163,8 @@ int main(int argc, char **argv) {
struct ff_spi *spi;
struct ff_fpga *fpga;
int peek_offset = 0;
uint8_t security_reg;
uint8_t security_val[256];
enum op op = OP_UNKNOWN;
enum spi_type spi_type = ST_SINGLE;
@ -186,7 +191,7 @@ int main(int argc, char **argv) {
return 1;
}
while ((opt = getopt(argc, argv, "hip:rf:w:s:2:3:v:g:t:")) != -1) {
while ((opt = getopt(argc, argv, "hip:rf:w:s:2:3:v:g:t:k:")) != -1) {
switch (opt) {
case 'r':
@ -195,6 +200,34 @@ int main(int argc, char **argv) {
op = OP_FPGA_RESET;
break;
case 'k': {
if (op != OP_UNKNOWN)
return print_usage_error(stdout);
char *security_filename = strchr(optarg, ':');
security_reg = strtoul(optarg, NULL, 0);
if (security_filename) {
security_filename++;
op = OP_SPI_SECURITY_WRITE;
int fd;
fd = open(security_filename, O_RDONLY);
if (fd == -1) {
perror("couldn't open security file");
return 1;
}
memset(security_val, 0, sizeof(security_val));
if (-1 == read(fd, security_val, sizeof(security_val))) {
perror("couldn't read from security file");
return 2;
}
close(fd);
}
else {
op = OP_SPI_SECURITY_READ;
}
break;
}
case 'i':
if (op != OP_UNKNOWN)
return print_usage_error(stdout);
@ -312,9 +345,23 @@ int main(int argc, char **argv) {
if (id.device_id != id.signature)
printf("!! Electronic Signature: %02x\n", id.signature);
printf("Serial number: %02x %02x %02x %02x\n", id.serial[0], id.serial[1], id.serial[2], id.serial[3]);
printf("SR1: %02x\n", spiReadSr(spi, 1));
printf("SR2: %02x\n", spiReadSr(spi, 2));
printf("SR3: %02x\n", spiReadSr(spi, 3));
printf("Status 1: %02x\n", spiReadStatus(spi, 1));
printf("Status 2: %02x\n", spiReadStatus(spi, 2));
printf("Status 3: %02x\n", spiReadStatus(spi, 3));
break;
}
case OP_SPI_SECURITY_WRITE: {
printf("Updating security register %d.\n", security_reg);
spiWriteSecurity(spi, security_reg, security_val);
break;
}
case OP_SPI_SECURITY_READ: {
uint8_t security[256];
printf("Security register %d contents:\n", security_reg);
spiReadSecurity(spi, security_reg, security);
print_hex(security, sizeof(security), 0);
break;
}