Maemo patchset 20101501+0m5

[h-e-n] / drivers / char / hw_random / omap3-rom-asm.S

diff --git a/drivers/char/hw_random/omap3-rom-asm.S b/drivers/char/hw_random/omap3-rom-asm.S
new file mode 100644 (file)
index 0000000..95b56de
--- /dev/null
+++ b/drivers/char/hw_random/omap3-rom-asm.S
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2009 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+ENTRY(omap3_rng_call_rom_asm)
+       stmfd   sp!, {r4-r12, lr}
+       stmfd   sp!, {r0-r3}
+       bl      v7_flush_dcache_all
+       ldmfd   sp!, {r0-r3}
+       mov     r6, #0xff
+       mov     r12, r0
+       smc     #1
+       mov     r12, r0
+       bl      v7_flush_dcache_all
+       mov     r0, #0
+       mcr     p15, 0, r0, c7, c5, 0
+       mov     r0, r12
+       ldmfd   sp!, {r4-r12, pc}