Fix error -EINVAL on mmap()
Don't calculate "flash_baseaddr" until the final value of "size"
is known, otherwise we end up trying to map a page right after
the end of memory.
Fixes #112.
Corresponding to flashrom svn r308 and coreboot v2 svn r3502.
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
diff --git a/flashrom.c b/flashrom.c
index 4fd509c..03a8eeb 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -116,14 +116,6 @@
size = flash->total_size * 1024;
-#ifdef TS5300
- // FIXME: Wrong place for this decision
- // FIXME: This should be autodetected. It is trivial.
- flash_baseaddr = 0x9400000;
-#else
- flash_baseaddr = (0xffffffff - size + 1);
-#endif
-
/* If getpagesize() > size ->
* "Can't mmap memory using /dev/mem: Invalid argument"
* This should never happen as we don't support any flash chips
@@ -139,6 +131,14 @@
size = getpagesize();
}
+#ifdef TS5300
+ // FIXME: Wrong place for this decision
+ // FIXME: This should be autodetected. It is trivial.
+ flash_baseaddr = 0x9400000;
+#else
+ flash_baseaddr = (0xffffffff - size + 1);
+#endif
+
bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
fd_mem, (off_t) flash_baseaddr);
if (bios == MAP_FAILED) {