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White Rabbit Switch - Software
Commit 7df864ea authored by Alessandro Rubini's avatar Alessandro Rubini
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userspace/tools/lm32-load: fix variable setting 

We need to reset the CPU outside of the whole loop. This moves stuff
around a lot to do that. Otherwise the variables are set after the CPU
already started, and it may be too late (it is too late in our
specific case).
Signed-off-by: Alessandro Rubini's avatarAlessandro Rubini <rubini@gnudd.com>
parent a90e1542
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Showing with 27 additions and 27 deletions
userspace/tools/load-lm32.c
View file @ 7df864ea
......@@ -205,26 +205,7 @@ int load_lm32(char *fname, int noload)
{
void *buf;
FILE *f;
int fdmem, iself, ret;
setbuffer(stdout, NULL, 0);
if ((fdmem = open("/dev/mem", O_RDWR | O_SYNC)) < 0) {
fprintf(stderr, "%s: /dev/mem: %s\n", prgname,
strerror(errno));
exit(1);
}
base_fpga = mmap(0, SIZE_FPGA, PROT_READ | PROT_WRITE,
MAP_SHARED, fdmem,
BASE_FPGA);
close(fdmem);
if (base_fpga == MAP_FAILED) {
fprintf(stderr, "%s: mmap(/dev/mem): %s\n",
prgname, strerror(errno));
exit(1);
}
int iself, ret;
f=fopen(fname,"rb");
if(!f)
......@@ -256,11 +237,8 @@ int load_lm32(char *fname, int noload)
return -1;
}
if (!noload)
rst_lm32(1);
/*
* If else, we need to call the function even if (noload)
* If ELF, we need to call the function even if (noload)
* because the function parses ELF and sets global variables.
* To the same to the binary loader for symmetry.
*/
......@@ -268,8 +246,6 @@ int load_lm32(char *fname, int noload)
ret = copy_lm32_elf(buf, noload, size);
else
ret = copy_lm32(buf, noload, size, 0);
if (!noload)
rst_lm32(0);
free(buf);
return ret;
}
......@@ -334,7 +310,7 @@ static int varaction_lm32(char *fname, char *action)
int main(int argc, char **argv)
{
int ret;
int fdmem, ret;
int i, noload = 0;
prgname = argv[0];
......@@ -348,6 +324,28 @@ int main(int argc, char **argv)
fprintf(stderr, "%s: Use: \"%s [-n] <filename> "
"[<var>=<value> ...]\"\n", prgname, prgname);
}
setbuffer(stdout, NULL, 0);
if ((fdmem = open("/dev/mem", O_RDWR | O_SYNC)) < 0) {
fprintf(stderr, "%s: /dev/mem: %s\n", prgname,
strerror(errno));
exit(1);
}
base_fpga = mmap(0, SIZE_FPGA, PROT_READ | PROT_WRITE,
MAP_SHARED, fdmem,
BASE_FPGA);
close(fdmem);
if (base_fpga == MAP_FAILED) {
fprintf(stderr, "%s: mmap(/dev/mem): %s\n",
prgname, strerror(errno));
exit(1);
}
if (!noload)
rst_lm32(1);
ret = load_lm32(argv[1], noload);
if (ret)
exit(1);
......@@ -355,5 +353,7 @@ int main(int argc, char **argv)
for (i = 2; i < argc; i++)
if (varaction_lm32(argv[1], argv[i]))
exit(1);
if (!noload)
rst_lm32(0);
return 0;
}
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