karo: tx28: improve random init code

diff --git a/board/karo/tx28/tx28.c b/board/karo/tx28/tx28.c
index c64755ecb6c2bb120f897b0a11d79bd2fea4ab1a..cf64c5392f51cc67df0680aff91536cfad329b31 100644 (file)
--- a/board/karo/tx28/tx28.c
+++ b/board/karo/tx28/tx28.c
@@ -109,9 +109,11 @@ static inline void random_init(void)
        int i;
 
        for (i = 0; i < MAX_LOOPS; i++) {
-               unsigned int usec = readl(&digctl_regs->hw_digctl_microseconds);
+               u32 hclk = readl(&digctl_regs->hw_digctl_hclkcount);
+               u32 entropy = readl(&digctl_regs->hw_digctl_entropy);
+               u32 usec = readl(&digctl_regs->hw_digctl_microseconds);
 
-               seed = get_timer(usec + random + seed);
+               seed = get_timer(hclk ^ entropy ^ usec ^ random ^ seed);
                srand(seed);
                random = rand();
        }