xref: /openbmc/u-boot/arch/m68k/include/asm/coldfire/rng.h (revision 98a48c5d)
1 /*
2  * RNG Memory Map
3  *
4  * Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
5  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
6  *
7  * See file CREDITS for list of people who contributed to this
8  * project.
9  *
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License as
12  * published by the Free Software Foundation; either version 2 of
13  * the License, or (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23  * MA 02111-1307 USA
24  */
25 
26 #ifndef __RNG_H__
27 #define __RNG_H__
28 
29 /* Random Number Generator */
30 typedef struct rng_ctrl {
31 	u32 cr;			/* 0x00 Control */
32 	u32 sr;			/* 0x04 Status */
33 	u32 er;			/* 0x08 Entropy */
34 	u32 out;		/* 0x0C Output FIFO */
35 } rng_t;
36 
37 #define RNG_CR_SLM		(0x00000010)	/* Sleep mode - 5445x */
38 #define RNG_CR_CI		(0x00000008)	/* Clear interrupt */
39 #define RNG_CR_IM		(0x00000004)	/* Interrupt mask */
40 #define RNG_CR_HA		(0x00000002)	/* High assurance */
41 #define RNG_CR_GO		(0x00000001)	/* Go bit */
42 
43 #define RNG_SR_OFS(x)		(((x) & 0x000000FF) << 16)
44 #define RNG_SR_OFS_MASK		(0xFF00FFFF)
45 #define RNG_SR_OFL(x)		(((x) & 0x000000FF) << 8)
46 #define RNG_SR_OFL_MASK		(0xFFFF00FF)
47 #define RNG_SR_EI		(0x00000008)
48 #define RNG_SR_FUF		(0x00000004)
49 #define RNG_SR_LRS		(0x00000002)
50 #define RNG_SR_SV		(0x00000001)
51 
52 #endif				/* __RNG_H__ */
53