Signed-off-by: Pali Rohár <pali.ro...@gmail.com>
---
arch/arm/mach-omap2/board-rx51.c | 10 ++++++++++
arch/arm/mach-omap2/omap-secure.c | 11 +++++++++++
arch/arm/mach-omap2/omap-secure.h | 1 +
3 files changed, 22 insertions(+)
diff --git a/arch/arm/mach-omap2/board-rx51.c b/arch/arm/mach-omap2/board-rx51.c
index db168c9..c2a3e39 100644
--- a/arch/arm/mach-omap2/board-rx51.c
+++ b/arch/arm/mach-omap2/board-rx51.c
@@ -93,6 +93,14 @@ static struct omap_musb_board_data musb_board_data = {
.power = 0,
};
+static struct platform_device omap3_rom_rng_device = {
+ .name = "omap_rng",
+ .id = -1,
+ .dev = {
+ .platform_data = rx51_secure_rng_call,
+ },
+};
+
static void __init rx51_init(void)
{
struct omap_sdrc_params *sdrc_params;
@@ -113,6 +121,8 @@ static void __init rx51_init(void)
/* set IBE to 1 */
rx51_secure_update_aux_cr(BIT(6), 0);
#endif
+ pr_info("RX-51: Registring OMAP3 HWRNG device\n");
+ platform_device_register(&omap3_rom_rng_device);
}
/* Ensure SDRC pins are mux'd for self-refresh */
diff --git a/arch/arm/mach-omap2/omap-secure.c
b/arch/arm/mach-omap2/omap-secure.c
index 146a7c4..5ac122e 100644
--- a/arch/arm/mach-omap2/omap-secure.c
+++ b/arch/arm/mach-omap2/omap-secure.c
@@ -135,3 +135,14 @@ u32 rx51_secure_update_aux_cr(u32 set_bits, u32 clear_bits)
FLAG_START_CRITICAL,
1, acr, 0, 0, 0);
}
+
+/**
+ * rx51_secure_rng_call: Routine for HW random generator
+ */
+u32 rx51_secure_rng_call(u32 ptr, u32 count, u32 flag)
+{
+ return rx51_secure_dispatcher(RX51_PPA_HWRNG,
+ 0,
+ NO_FLAG,
+ 3, ptr, count, flag, 0);
+}
diff --git a/arch/arm/mach-omap2/omap-secure.h
b/arch/arm/mach-omap2/omap-secure.h
index 51b59c6..f6cabb0 100644
--- a/arch/arm/mach-omap2/omap-secure.h
+++ b/arch/arm/mach-omap2/omap-secure.h
@@ -65,6 +65,7 @@ extern int omap_secure_ram_reserve_memblock(void);
extern u32 rx51_secure_dispatcher(u32 idx, u32 process, u32 flag, u32 nargs,
u32 arg1, u32 arg2, u32 arg3, u32 arg4);
extern u32 rx51_secure_update_aux_cr(u32 set_bits, u32 clear_bits);
+extern u32 rx51_secure_rng_call(u32 ptr, u32 count, u32 flag);
#ifdef CONFIG_OMAP4_ERRATA_I688
extern int omap_barrier_reserve_memblock(void);
--
1.7.10.4
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