sandbox: Add timer simulation
Making sleep command work
Signed-off-by: Matthias Weisser <weisserm@arcor.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/sandbox/config.mk b/arch/sandbox/config.mk
index ab33026..2ec1bb7 100644
--- a/arch/sandbox/config.mk
+++ b/arch/sandbox/config.mk
@@ -18,3 +18,4 @@
# MA 02111-1307 USA
PLATFORM_CPPFLAGS += -DCONFIG_SANDBOX -D__SANDBOX__
+PLATFORM_LIBS += -lrt
diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c
index c7bf8a9..d7684d3 100644
--- a/arch/sandbox/cpu/cpu.c
+++ b/arch/sandbox/cpu/cpu.c
@@ -34,12 +34,12 @@
/* delay x useconds */
void __udelay(unsigned long usec)
{
- /* Ignore this for now */
+ os_usleep(usec);
}
unsigned long timer_get_us(void)
{
- return 0;
+ return os_get_nsec() / 1000;
}
int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index b7c3bf5..6d55b5c 100644
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -23,9 +23,12 @@
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
+#include <time.h>
+#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
+#include <linux/types.h>
#include <os.h>
@@ -94,3 +97,27 @@
return mmap(NULL, length, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
}
+
+void os_usleep(unsigned long usec)
+{
+ usleep(usec);
+}
+
+u64 os_get_nsec(void)
+{
+#if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK)
+ struct timespec tp;
+ if (EINVAL == clock_gettime(CLOCK_MONOTONIC, &tp)) {
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+ tp.tv_sec = tv.tv_sec;
+ tp.tv_nsec = tv.tv_usec * 1000;
+ }
+ return tp.tv_sec * 1000000000ULL + tp.tv_nsec;
+#else
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
+#endif
+}
diff --git a/board/sandbox/sandbox/sandbox.c b/board/sandbox/sandbox/sandbox.c
index 95a5045..f376c74 100644
--- a/board/sandbox/sandbox/sandbox.c
+++ b/board/sandbox/sandbox/sandbox.c
@@ -21,6 +21,8 @@
#include <common.h>
+#include <os.h>
+
/*
* Pointer to initial global data area
*
@@ -34,7 +36,7 @@
ulong get_timer(ulong base)
{
- return 0;
+ return (os_get_nsec() / 1000000) - base;
}
int timer_init(void)
diff --git a/include/os.h b/include/os.h
index fd4120c..f3af4f0 100644
--- a/include/os.h
+++ b/include/os.h
@@ -84,3 +84,17 @@
* \return Pointer to length bytes or NULL on error
*/
void *os_malloc(size_t length);
+
+/**
+ * Access to the usleep function of the os
+ *
+ * \param usec Time to sleep in micro seconds
+ */
+void os_usleep(unsigned long usec);
+
+/**
+ * Gets a monotonic increasing number of nano seconds from the OS
+ *
+ * \return A monotonic increasing time scaled in nano seconds
+ */
+u64 os_get_nsec(void);