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Commit d2065e2b authored by Pali Rohár's avatar Pali Rohár Committed by Tony Lindgren
Browse files

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: default avatarPali Rohár <pali.rohar@gmail.com>
[tony@atomide.com: folded in the clock alias change]
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 4748a724

arch/arm/mach-omap2/board-rx51-peripherals.c

+19 −0
Original line number Diff line number Diff line
@@ -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();

}

arch/arm/mach-omap2/cclock3xxx_data.c

+1 −0
Original line number Diff line number Diff line
@@ -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),

arch/arm/mach-omap2/omap-secure.c

+11 −0
Original line number Diff line number Diff line
@@ -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);

}

arch/arm/mach-omap2/omap-secure.h

+1 −0
Original line number Diff line number Diff line
@@ -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);