/* * 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 CONFIG_SYS_CADMUS_BASE_REG #define CONFIG_SYS_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 *)CONFIG_SYS_CADMUS_BASE_REG; return cadmus->cm_ver; } unsigned long get_clock_freq(void) { volatile cadmus_reg_t *cadmus = (cadmus_reg_t *)CONFIG_SYS_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 *)CONFIG_SYS_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 *)CONFIG_SYS_CADMUS_BASE_REG; /* * PCI DUAL in CM_PCI[3] */ return cadmus->cm_pci & 0x10; }