summaryrefslogtreecommitdiff
path: root/util
diff options
context:
space:
mode:
Diffstat (limited to 'util')
-rw-r--r--util/dell-flash-unlock/accessors.c39
1 files changed, 35 insertions, 4 deletions
diff --git a/util/dell-flash-unlock/accessors.c b/util/dell-flash-unlock/accessors.c
index a8541e28..0a5df760 100644
--- a/util/dell-flash-unlock/accessors.c
+++ b/util/dell-flash-unlock/accessors.c
@@ -18,6 +18,13 @@
#endif /* __i386__ */
#endif /* __OpenBSD__ */
+#if defined(__FreeBSD__)
+#include <fcntl.h>
+#include <sys/types.h>
+#include <machine/cpufunc.h>
+#include <unistd.h>
+#endif /* __FreeBSD__ */
+
#include <errno.h>
#include "accessors.h"
@@ -42,7 +49,7 @@ sys_outb(unsigned int port, uint8_t data)
#if defined(__linux__)
outb(data, port);
#endif
- #if defined(__OpenBSD__)
+ #if defined(__OpenBSD__) || defined(__FreeBSD__)
outb(port, data);
#endif
#if defined(__NetBSD__)
@@ -56,7 +63,7 @@ sys_outl(unsigned int port, uint32_t data)
#if defined(__linux__)
outl(data, port);
#endif
- #if defined(__OpenBSD__)
+ #if defined(__OpenBSD__) || defined(__FreeBSD__)
outl(port, data);
#endif
#if defined(__NetBSD__)
@@ -67,7 +74,8 @@ sys_outl(unsigned int port, uint32_t data)
uint8_t
sys_inb(unsigned int port)
{
- #if defined(__linux__) || defined (__OpenBSD__)
+ #if defined(__linux__) || defined (__OpenBSD__) \
+ || defined(__FreeBSD__)
return inb(port);
#endif
@@ -82,7 +90,8 @@ sys_inb(unsigned int port)
uint32_t
sys_inl(unsigned int port)
{
- #if defined(__linux__) || defined (__OpenBSD__)
+ #if defined(__linux__) || defined (__OpenBSD__) \
+ || defined(__FreeBSD__)
return inl(port);
#endif
#if defined(__NetBSD__)
@@ -115,6 +124,28 @@ sys_iopl(int level)
#endif /* __amd64__ */
#endif /* __NetBSD__ */
+#if defined(__FreeBSD__)
+ /* Refer to io(4) manual page. This assumes the legacy behavior
+ * where opening /dev/io raises the IOPL of the process */
+ static int io_fd = -1;
+
+ /* Requesting privileged access */
+ if (level > 0) {
+ if (io_fd == -1) {
+ io_fd = open("/dev/io", O_RDONLY);
+ return (io_fd == -1) ? -1 : 0;
+ }
+ /* Lowering access to lowest level */
+ } else if (level == 0 && io_fd != -1) {
+ if (close(io_fd) == -1) {
+ return -1;
+ } else {
+ io_fd = -1;
+ }
+ }
+ return 0;
+#endif /* __FreeBSD__ */
+
errno = ENOSYS;
return -1;
}