[U-Boot] [PATCH 2/3] lib: rand: add call to hw_rand() - hardware random number generator
Przemyslaw Marczak
p.marczak at samsung.com
Fri Feb 28 17:30:54 CET 2014
Changes:
- lib/rand.c: add call to hw_rand() (depends on CONFIG_RAND_HW_ACCEL)
- include/common.h: add hw_rand() declaration.
Signed-off-by: Przemyslaw Marczak <p.marczak at samsung.com>
cc: Michael Walle <michael at walle.cc>
cc: Tom Rini <trini at ti.com>
---
include/common.h | 3 +++
lib/rand.c | 4 ++++
2 files changed, 7 insertions(+)
diff --git a/include/common.h b/include/common.h
index 96a45a6..58e2fbc 100644
--- a/include/common.h
+++ b/include/common.h
@@ -836,6 +836,9 @@ void srand(unsigned int seed);
unsigned int rand(void);
unsigned int rand_r(unsigned int *seedp);
#endif
+#ifdef CONFIG_RAND_HW_ACCEL
+unsigned int hw_rand(void);
+#endif
/* common/console.c */
int console_init_f(void); /* Before relocation; uses the serial stuff */
diff --git a/lib/rand.c b/lib/rand.c
index 5c367e1..f534635 100644
--- a/lib/rand.c
+++ b/lib/rand.c
@@ -23,7 +23,11 @@ unsigned int rand_r(unsigned int *seedp)
unsigned int rand(void)
{
+#ifdef CONFIG_RAND_HW_ACCEL
+ return hw_rand();
+#else
return rand_r(&y);
+#endif
}
void srand(unsigned int seed)
--
1.7.9.5
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