/* * (C) Copyright 2000-2002 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * 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> #include <commproc.h> DECLARE_GLOBAL_DATA_PTR; #ifdef CFG_ALLOC_DPRAM int dpram_init (void) { /* Reclaim the DP memory for our use. */ gd->dp_alloc_base = CPM_DATAONLY_BASE; gd->dp_alloc_top = CPM_DATAONLY_BASE + CPM_DATAONLY_SIZE; return (0); } /* Allocate some memory from the dual ported ram. We may want to * enforce alignment restrictions, but right now everyone is a good * citizen. */ uint dpram_alloc (uint size) { uint addr = gd->dp_alloc_base; if ((gd->dp_alloc_base + size) >= gd->dp_alloc_top) return (CPM_DP_NOSPACE); gd->dp_alloc_base += size; return addr; } uint dpram_base (void) { return gd->dp_alloc_base; } /* Allocate some memory from the dual ported ram. We may want to * enforce alignment restrictions, but right now everyone is a good * citizen. */ uint dpram_alloc_align (uint size, uint align) { uint addr, mask = align - 1; addr = (gd->dp_alloc_base + mask) & ~mask; if ((addr + size) >= gd->dp_alloc_top) return (CPM_DP_NOSPACE); gd->dp_alloc_base = addr + size; return addr; } uint dpram_base_align (uint align) { uint mask = align - 1; return (gd->dp_alloc_base + mask) & ~mask; } #endif /* CFG_ALLOC_DPRAM */ #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) void post_word_store (ulong a) { volatile void *save_addr = ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR; *(volatile ulong *) save_addr = a; } ulong post_word_load (void) { volatile void *save_addr = ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR; return *(volatile ulong *) save_addr; } #endif /* CONFIG_POST || CONFIG_LOGBUFFER*/ #ifdef CONFIG_BOOTCOUNT_LIMIT void bootcount_store (ulong a) { volatile ulong *save_addr = (volatile ulong *)( ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_BOOTCOUNT_ADDR ); save_addr[0] = a; save_addr[1] = BOOTCOUNT_MAGIC; } ulong bootcount_load (void) { volatile ulong *save_addr = (volatile ulong *)( ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_BOOTCOUNT_ADDR ); if (save_addr[1] != BOOTCOUNT_MAGIC) return 0; else return save_addr[0]; } #endif /* CONFIG_BOOTCOUNT_LIMIT */