Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arm / cpu / arm926ejs / mb86r0x / clock.c

diff --git a/qemu/roms/u-boot/arch/arm/cpu/arm926ejs/mb86r0x/clock.c b/qemu/roms/u-boot/arch/arm/cpu/arm926ejs/mb86r0x/clock.c
new file mode 100644 (file)
index 0000000..1f6f66e
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/arm926ejs/mb86r0x/clock.c
@@ -0,0 +1,27 @@
+/*
+ * (C) Copyright 2010
+ * Matthias Weisser <weisserm@arcor.de>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+
+/*
+ * Get the peripheral bus frequency depending on pll pin settings
+ */
+ulong get_bus_freq(ulong dummy)
+{
+       struct mb86r0x_crg * crg = (struct mb86r0x_crg *)
+                                       MB86R0x_CRG_BASE;
+       uint32_t pllmode;
+
+       pllmode = readl(&crg->crpr) & MB86R0x_CRG_CRPR_PLLMODE;
+
+       if (pllmode == MB86R0x_CRG_CRPR_PLLMODE_X20)
+               return 40000000;
+
+       return 41164767;
+}