Support rdmsr/wrmsr operations on FreeBSD

So far, AMD Geode LX is the only user of this infrastructure. It needs
/dev/cpu0 from ports/sysutils on FreeBSD during runtime on Geode LX.

Corresponding to flashrom svn r690.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Idwer Vollering <vidwer@gmail.com>
Acked-by: <putlinuxonit@gmail.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/flash.h b/flash.h
index 13564e1..a571be7 100644
--- a/flash.h
+++ b/flash.h
@@ -309,11 +309,21 @@ void *physmap(const char *descr, unsigned long phys_addr, size_t len);
 void physunmap(void *virt_addr, size_t len);
 int setup_cpu_msr(int cpu);
 void cleanup_cpu_msr(void);
-#ifndef __DARWIN__
+#if !defined(__DARWIN__) && !defined(__FreeBSD__) && !defined(__DragonFly__)
 typedef struct { uint32_t hi, lo; } msr_t;
 msr_t rdmsr(int addr);
 int wrmsr(int addr, msr_t msr);
 #endif
+#if defined(__FreeBSD__) || defined(__DragonFly__)
+/* FreeBSD already has conflicting definitions for wrmsr/rdmsr. */
+#undef rdmsr
+#undef wrmsr
+#define rdmsr freebsd_rdmsr
+#define wrmsr freebsd_wrmsr
+typedef struct { uint32_t hi, lo; } msr_t;
+msr_t freebsd_rdmsr(int addr);
+int freebsd_wrmsr(int addr, msr_t msr);
+#endif
 
 /* internal.c */
 struct pci_dev *pci_dev_find_filter(struct pci_filter filter);