Add support for building flashrom against libpayload

This doesn't include changes to the frontend which must be
done separately, so this won't work out of the box.
This code was tested on hardware.

Corresponding to flashrom svn r1184.
Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

flashrom.c

@@ -22,9 +22,11 @@
  */
 
 #include <stdio.h>
-#include <fcntl.h>
 #include <sys/types.h>
+#ifndef __LIBPAYLOAD__
+#include <fcntl.h>
 #include <sys/stat.h>
+#endif
 #include <string.h>
 #include <stdlib.h>
 #include <getopt.h>

hwaccess.c

@@ -22,9 +22,11 @@
 #include <string.h>
 #include <stdlib.h>
 #include <sys/types.h>
-#if !defined (__DJGPP__)
+#if !defined (__DJGPP__) && !defined(__LIBPAYLOAD__)
 #include <unistd.h>
 #include <fcntl.h>
+#endif
+#if !defined (__DJGPP__)
 #include <errno.h>
 #endif
 #include "flash.h"
@@ -44,7 +46,7 @@ int io_fd;
 
 void get_io_perms(void)
 {
-#if defined(__DJGPP__)
+#if defined(__DJGPP__) || defined(__LIBPAYLOAD__)
 	/* We have full permissions by default. */
 	return;
 #else

hwaccess.h

@@ -292,7 +292,7 @@ static inline uint32_t inl(uint16_t port)
   #endif
 #endif
 
-#if !defined(__DARWIN__) && !defined(__FreeBSD__) && !defined(__DragonFly__)
+#if !defined(__DARWIN__) && !defined(__FreeBSD__) && !defined(__DragonFly__) && !defined(__LIBPAYLOAD__)
 typedef struct { uint32_t hi, lo; } msr_t;
 msr_t rdmsr(int addr);
 int wrmsr(int addr, msr_t msr);
@@ -307,6 +307,16 @@ typedef struct { uint32_t hi, lo; } msr_t;
 msr_t freebsd_rdmsr(int addr);
 int freebsd_wrmsr(int addr, msr_t msr);
 #endif
+#if defined(__LIBPAYLOAD__)
+#include <arch/io.h>
+#include <arch/msr.h>
+typedef struct { uint32_t hi, lo; } msr_t;
+msr_t libpayload_rdmsr(int addr);
+int libpayload_wrmsr(int addr, msr_t msr);
+#undef rdmsr
+#define rdmsr libpayload_rdmsr
+#define wrmsr libpayload_wrmsr
+#endif
 
 #elif defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || defined(__ppc64__)
 

layout.c

@@ -134,6 +134,7 @@ int show_id(uint8_t *bios, int size, int force)
 }
 #endif
 
+#ifndef __LIBPAYLOAD__
 int read_romlayout(char *name)
 {
 	FILE *romlayout;
@@ -181,6 +182,7 @@ int read_romlayout(char *name)
 
 	return 0;
 }
+#endif
 
 int find_romentry(char *name)
 {

physmap.c

@@ -28,7 +28,7 @@
 #include "flash.h"
 
 /* Do we need any file access or ioctl for physmap or MSR? */
-#if !defined(__DJGPP__)
+#if !defined(__DJGPP__) && !defined(__LIBPAYLOAD__)
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <errno.h>
@@ -104,6 +104,31 @@ void physunmap(void *virt_addr, size_t len)
 	__dpmi_free_physical_address_mapping(&mi);
 }
 
+#elif defined(__LIBPAYLOAD__)
+#include <arch/virtual.h>
+
+#define MEM_DEV ""
+
+void *sys_physmap(unsigned long phys_addr, size_t len)
+{
+	return (void*)phys_to_virt(phys_addr);
+}
+
+#define sys_physmap_rw_uncached	sys_physmap
+#define sys_physmap_ro_cached	sys_physmap
+
+void physunmap(void *virt_addr, size_t len)
+{
+}
+
+int setup_cpu_msr(int cpu)
+{
+	return 0;
+}
+
+void cleanup_cpu_msr(void)
+{
+}
 #elif defined(__DARWIN__)
 
 #include <DirectIO/darwinio.h>
@@ -453,6 +478,20 @@ void cleanup_cpu_msr(void)
 {
 	// Nothing, yet.
 }
+#elif defined(__LIBPAYLOAD__)
+msr_t libpayload_rdmsr(int addr)
+{
+	msr_t msr;
+	unsigned long long val = _rdmsr(addr);
+	msr.lo = val & 0xffffffff;
+	msr.hi = val >> 32;
+	return msr;
+}
+
+int libpayload_wrmsr(int addr, msr_t msr)
+{
+	_wrmsr(addr, msr.lo | ((unsigned long long)msr.hi << 32));
+}
 #else
 msr_t rdmsr(int addr)
 {

udelay.c

@@ -19,6 +19,8 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+#ifndef __LIBPAYLOAD__
+
 #include <unistd.h>
 #include <sys/time.h>
 #include <stdlib.h>
@@ -179,3 +181,15 @@ void internal_delay(int usecs)
 	}
 }
 
+#else 
+
+void myusec_calibrate_delay(void)
+{
+	get_cpu_speed();
+}
+
+void internal_delay(int usecs)
+{
+	udelay(usecs);
+}
+#endif