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authorPali Rohár <pali.rohar@gmail.com>2013-09-20 15:25:07 +0200
committerTony Lindgren <tony@atomide.com>2013-10-08 12:02:12 -0700
commitd2065e2b5bb3ec986f0f3ba044a81a136767d0b4 (patch)
tree56d60a70b45e2bfbc43cebdb54f0943073a9b2ab
parent4748a7240284b0f68bd47a66365c2cd561939830 (diff)
RX-51: Add support for OMAP3 ROM Random Number Generator
Adding this driver as platform device and only for RX-51 until somebody test if it working also on other OMAP3 HS devices and until there will be generic ARM way to deal with SMC calls. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> [tony@atomide.com: folded in the clock alias change] Signed-off-by: Tony Lindgren <tony@atomide.com>
-rw-r--r--arch/arm/mach-omap2/board-rx51-peripherals.c19
-rw-r--r--arch/arm/mach-omap2/cclock3xxx_data.c1
-rw-r--r--arch/arm/mach-omap2/omap-secure.c11
-rw-r--r--arch/arm/mach-omap2/omap-secure.h1
4 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index c3270c0f1fc..497d2604c7c 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -57,6 +57,8 @@
#include "common-board-devices.h"
#include "gpmc.h"
#include "gpmc-onenand.h"
+#include "soc.h"
+#include "omap-secure.h"
#define SYSTEM_REV_B_USES_VAUX3 0x1699
#define SYSTEM_REV_S_USES_VAUX3 0x8
@@ -1289,6 +1291,22 @@ static void __init rx51_init_twl4030_hwmon(void)
platform_device_register(&madc_hwmon);
}
+static struct platform_device omap3_rom_rng_device = {
+ .name = "omap3-rom-rng",
+ .id = -1,
+ .dev = {
+ .platform_data = rx51_secure_rng_call,
+ },
+};
+
+static void __init rx51_init_omap3_rom_rng(void)
+{
+ if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
+ pr_info("RX-51: Registring OMAP3 HWRNG device\n");
+ platform_device_register(&omap3_rom_rng_device);
+ }
+}
+
void __init rx51_peripherals_init(void)
{
rx51_i2c_init();
@@ -1309,5 +1327,6 @@ void __init rx51_peripherals_init(void)
rx51_charger_init();
rx51_init_twl4030_hwmon();
+ rx51_init_omap3_rom_rng();
}
diff --git a/arch/arm/mach-omap2/cclock3xxx_data.c b/arch/arm/mach-omap2/cclock3xxx_data.c
index 334b7674590..03a2829beb8 100644
--- a/arch/arm/mach-omap2/cclock3xxx_data.c
+++ b/arch/arm/mach-omap2/cclock3xxx_data.c
@@ -3275,6 +3275,7 @@ static struct omap_clk omap36xx_clks[] = {
static struct omap_clk omap34xx_omap36xx_clks[] = {
CLK(NULL, "aes1_ick", &aes1_ick),
CLK("omap_rng", "ick", &rng_ick),
+ CLK("omap3-rom-rng", "ick", &rng_ick),
CLK(NULL, "sha11_ick", &sha11_ick),
CLK(NULL, "des1_ick", &des1_ick),
CLK(NULL, "cam_mclk", &cam_mclk),
diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c
index 146a7c4e2a1..5ac122e88f6 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 51b59c686a5..f6cabb0033f 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);