libreboot
/
lbmk
1
0
Fork 0
Code Packages Projects Releases Activity

util/nvmutil: limit bytes written per command 

Massive reduction in number of bytes written, if copy/swap
commands are not used.
fsdg20230625
Leah Rowe 2023-01-17 11:02:51 +00:00
parent e398331b38
commit 8242dca57b
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
util/nvmutil/nvmutil.c
View File

@ -437,9 +437,14 @@ void
writeGbeFile(int *fd, const char *filename)
{
int p;
int tw = 0;
int nw = SIZE_4KB;
errno = 0;
/* if copy/swap not performed, write only the nvm part */
if ((gbe[0] != gbe[1]) && (gbe[0] < gbe[1]))
nw = 128;
for (p = 0; p < 2; p++) {
if (nvmPartModified[p]) {
printf("Part %d modified\n", p);
@ -450,11 +455,12 @@ writeGbeFile(int *fd, const char *filename)
}
if (pwrite((*fd), (uint8_t *) gbe[p], nw, p << 12) != nw)
err(errno, "%s", filename);
tw += nw;
}
if (close((*fd)))
err(errno, "%s", filename);
if (errno != 0)
err(errno, "%s", filename);
printf("File `%s` successfully re-written.\n", filename);
printf("%d bytes written to file: `%s`\n", tw, filename);
}