96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/*
|
|
* Copyright 2004 Freescale Semiconductor.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
|
|
#include <common.h>
|
|
|
|
|
|
/*
|
|
* CADMUS Board System Registers
|
|
*/
|
|
#ifndef CFG_CADMUS_BASE_REG
|
|
#define CFG_CADMUS_BASE_REG (CADMUS_BASE_ADDR + 0x4000)
|
|
#endif
|
|
|
|
typedef struct cadmus_reg {
|
|
u_char cm_ver; /* Board version */
|
|
u_char cm_csr; /* General control/status */
|
|
u_char cm_rst; /* Reset control */
|
|
u_char cm_hsclk; /* High speed clock */
|
|
u_char cm_hsxclk; /* High speed clock extended */
|
|
u_char cm_led; /* LED data */
|
|
u_char cm_pci; /* PCI control/status */
|
|
u_char cm_dma; /* DMA control */
|
|
u_char cm_reserved[248]; /* Total 256 bytes */
|
|
} cadmus_reg_t;
|
|
|
|
|
|
unsigned int
|
|
get_board_version(void)
|
|
{
|
|
volatile cadmus_reg_t *cadmus = (cadmus_reg_t *)CFG_CADMUS_BASE_REG;
|
|
|
|
return cadmus->cm_ver;
|
|
}
|
|
|
|
|
|
unsigned long
|
|
get_clock_freq(void)
|
|
{
|
|
volatile cadmus_reg_t *cadmus = (cadmus_reg_t *)CFG_CADMUS_BASE_REG;
|
|
|
|
uint pci1_speed = (cadmus->cm_pci >> 2) & 0x3; /* PSPEED in [4:5] */
|
|
|
|
if (pci1_speed == 0) {
|
|
return 33000000;
|
|
} else if (pci1_speed == 1) {
|
|
return 66000000;
|
|
} else {
|
|
/* Really, unknown. Be safe? */
|
|
return 33000000;
|
|
}
|
|
}
|
|
|
|
|
|
unsigned int
|
|
get_pci_slot(void)
|
|
{
|
|
volatile cadmus_reg_t *cadmus = (cadmus_reg_t *)CFG_CADMUS_BASE_REG;
|
|
|
|
/*
|
|
* PCI slot in USER bits CSR[6:7] by convention.
|
|
*/
|
|
return ((cadmus->cm_csr >> 6) & 0x3) + 1;
|
|
}
|
|
|
|
|
|
unsigned int
|
|
get_pci_dual(void)
|
|
{
|
|
volatile cadmus_reg_t *cadmus = (cadmus_reg_t *)CFG_CADMUS_BASE_REG;
|
|
|
|
/*
|
|
* PCI DUAL in CM_PCI[3]
|
|
*/
|
|
return cadmus->cm_pci & 0x10;
|
|
}
|