1 1.6 skrll /* $NetBSD: i80312_mem.c,v 1.6 2018/07/31 06:46:25 skrll Exp $ */ 2 1.1 thorpej 3 1.1 thorpej /* 4 1.1 thorpej * Copyright (c) 2001 Wasabi Systems, Inc. 5 1.1 thorpej * All rights reserved. 6 1.1 thorpej * 7 1.1 thorpej * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 1.1 thorpej * 9 1.1 thorpej * Redistribution and use in source and binary forms, with or without 10 1.1 thorpej * modification, are permitted provided that the following conditions 11 1.1 thorpej * are met: 12 1.1 thorpej * 1. Redistributions of source code must retain the above copyright 13 1.1 thorpej * notice, this list of conditions and the following disclaimer. 14 1.1 thorpej * 2. Redistributions in binary form must reproduce the above copyright 15 1.1 thorpej * notice, this list of conditions and the following disclaimer in the 16 1.1 thorpej * documentation and/or other materials provided with the distribution. 17 1.1 thorpej * 3. All advertising materials mentioning features or use of this software 18 1.1 thorpej * must display the following acknowledgement: 19 1.1 thorpej * This product includes software developed for the NetBSD Project by 20 1.1 thorpej * Wasabi Systems, Inc. 21 1.1 thorpej * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.1 thorpej * or promote products derived from this software without specific prior 23 1.1 thorpej * written permission. 24 1.1 thorpej * 25 1.1 thorpej * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.1 thorpej * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.1 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.1 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.1 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.1 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.1 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.1 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.1 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.1 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.1 thorpej * POSSIBILITY OF SUCH DAMAGE. 36 1.1 thorpej */ 37 1.1 thorpej 38 1.1 thorpej /* 39 1.1 thorpej * Intel i80312 Companion I/O memory controller support. 40 1.1 thorpej */ 41 1.3 lukem 42 1.6 skrll #include "opt_arm_debug.h" 43 1.6 skrll 44 1.3 lukem #include <sys/cdefs.h> 45 1.6 skrll __KERNEL_RCSID(0, "$NetBSD: i80312_mem.c,v 1.6 2018/07/31 06:46:25 skrll Exp $"); 46 1.1 thorpej 47 1.1 thorpej #include <sys/param.h> 48 1.1 thorpej #include <sys/systm.h> 49 1.1 thorpej 50 1.5 dyoung #include <sys/bus.h> 51 1.1 thorpej 52 1.1 thorpej #include <arm/xscale/i80312reg.h> 53 1.1 thorpej #include <arm/xscale/i80312var.h> 54 1.1 thorpej 55 1.1 thorpej /* 56 1.1 thorpej * i80312_sdram_bounds: 57 1.1 thorpej * 58 1.1 thorpej * Retrieve the start and size of SDRAM. 59 1.1 thorpej */ 60 1.1 thorpej void 61 1.1 thorpej i80312_sdram_bounds(bus_space_tag_t st, bus_space_handle_t sh, 62 1.1 thorpej paddr_t *start, psize_t *size) 63 1.1 thorpej { 64 1.1 thorpej uint32_t sdbr, sbr0, sbr1; 65 1.1 thorpej uint32_t bank0, bank1; 66 1.1 thorpej 67 1.1 thorpej sdbr = bus_space_read_4(st, sh, I80312_MEM_SB); 68 1.1 thorpej sbr0 = bus_space_read_4(st, sh, I80312_MEM_SB0); 69 1.1 thorpej sbr1 = bus_space_read_4(st, sh, I80312_MEM_SB1); 70 1.1 thorpej 71 1.2 thorpej #ifdef VERBOSE_INIT_ARM 72 1.1 thorpej printf("i80312: SBDR = 0x%08x SBR0 = 0x%08x SBR1 = 0x%08x\n", 73 1.1 thorpej sdbr, sbr0, sbr1); 74 1.1 thorpej #endif 75 1.1 thorpej 76 1.1 thorpej *start = sdbr; 77 1.1 thorpej 78 1.1 thorpej sdbr = (sdbr >> 25) & 0xf; 79 1.1 thorpej 80 1.1 thorpej sbr0 = ((sbr0 >> 3) & 0x1f) - sdbr; 81 1.1 thorpej sbr1 = ((sbr1 >> 3) & 0x1f) - sbr0; 82 1.1 thorpej 83 1.1 thorpej bank0 = sbr0 << 25; 84 1.1 thorpej bank1 = sbr1 << 25; 85 1.1 thorpej 86 1.2 thorpej #ifdef VERBOSE_INIT_ARM 87 1.1 thorpej printf("i80312: BANK0 = 0x%08x BANK1 = 0x%08x\n", bank0, bank1); 88 1.1 thorpej #endif 89 1.1 thorpej 90 1.1 thorpej *size = bank0 + bank1; 91 1.1 thorpej } 92