1/*  *********************************************************************
2    *  Broadcom Common Firmware Environment (CFE)
3    *
4    *  CPU Speed calculation			File: mpc8245_speed.h
5    *
6    *  Routines to determine CPU and bus speeds.
7    *
8    *  Author:  Mitch Lichtenberg
9    *
10    *********************************************************************
11    *
12    *  Copyright 2000,2001,2002,2003
13    *  Broadcom Corporation. All rights reserved.
14    *
15    *  This software is furnished under license and may be used and
16    *  copied only in accordance with the following terms and
17    *  conditions.  Subject to these conditions, you may download,
18    *  copy, install, use, modify and distribute modified or unmodified
19    *  copies of this software in source and/or binary form.  No title
20    *  or ownership is transferred hereby.
21    *
22    *  1) Any source code used, modified or distributed must reproduce
23    *     and retain this copyright notice and list of conditions
24    *     as they appear in the source file.
25    *
26    *  2) No right is granted to use any trade name, trademark, or
27    *     logo of Broadcom Corporation.  The "Broadcom Corporation"
28    *     name may not be used to endorse or promote products derived
29    *     from this software without the prior written permission of
30    *     Broadcom Corporation.
31    *
32    *  3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR
33    *     IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
34    *     WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
35    *     PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT
36    *     SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN
37    *     PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT,
38    *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
39    *     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
40    *     GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
41    *     BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
42    *     OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
43    *     TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF
44    *     THE POSSIBILITY OF SUCH DAMAGE.
45    ********************************************************************* */
46
47
48
49#define MULTVAL(amt,frac) (((amt)<<1)|((frac)/5))
50#define MULTWHOLE(amt) ((amt) >> 1)
51#define MULTFRAC(amt) (((amt) & 1) ? 5 : 0)
52
53#define SPEED_MHZ(hz) ((hz)/1000000)
54
55typedef struct mpc8245_speed_s {
56    uint32_t sync_in_clk;		/* input value, set to zero to guess */
57    uint32_t sys_logic_clk;
58    uint32_t core_clk;
59    uint32_t mem_pllmult;
60    uint32_t cpu_pllmult;
61} mpc8245_speed_t;
62
63
64void mpc8245_speeds(mpc8245_speed_t *speed);
65
66unsigned int mpc8245_cpu_speed(void);
67