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git.ipfire.org Git - people/ms/u-boot.git/blob - board/cds/common/cadmus.c
2 * Copyright 2004 Freescale Semiconductor.
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 * CADMUS Board System Registers
30 #ifndef CFG_CADMUS_BASE_REG
31 #define CFG_CADMUS_BASE_REG (CADMUS_BASE_ADDR + 0x4000)
34 typedef struct cadmus_reg
{
35 u_char cm_ver
; /* Board version */
36 u_char cm_csr
; /* General control/status */
37 u_char cm_rst
; /* Reset control */
38 u_char cm_hsclk
; /* High speed clock */
39 u_char cm_hsxclk
; /* High speed clock extended */
40 u_char cm_led
; /* LED data */
41 u_char cm_pci
; /* PCI control/status */
42 u_char cm_dma
; /* DMA control */
43 u_char cm_reserved
[248]; /* Total 256 bytes */
48 get_board_version(void)
50 volatile cadmus_reg_t
*cadmus
= (cadmus_reg_t
*)CFG_CADMUS_BASE_REG
;
52 return cadmus
->cm_ver
;
59 volatile cadmus_reg_t
*cadmus
= (cadmus_reg_t
*)CFG_CADMUS_BASE_REG
;
61 uint pci1_speed
= (cadmus
->cm_pci
>> 2) & 0x3; /* PSPEED in [4:5] */
63 if (pci1_speed
== 0) {
65 } else if (pci1_speed
== 1) {
68 /* Really, unknown. Be safe? */
77 volatile cadmus_reg_t
*cadmus
= (cadmus_reg_t
*)CFG_CADMUS_BASE_REG
;
80 * PCI slot in USER bits CSR[6:7] by convention.
82 return ((cadmus
->cm_csr
>> 6) & 0x3) + 1;
89 volatile cadmus_reg_t
*cadmus
= (cadmus_reg_t
*)CFG_CADMUS_BASE_REG
;
92 * PCI DUAL in CM_PCI[3]
94 return cadmus
->cm_pci
& 0x10;