i80321_mcu.c revision 1.1.2.2
1 1.1.2.2 nathanw /* $NetBSD: i80321_mcu.c,v 1.1.2.2 2002/04/01 07:39:16 nathanw Exp $ */ 2 1.1.2.2 nathanw 3 1.1.2.2 nathanw /* 4 1.1.2.2 nathanw * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 1.1.2.2 nathanw * All rights reserved. 6 1.1.2.2 nathanw * 7 1.1.2.2 nathanw * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 1.1.2.2 nathanw * 9 1.1.2.2 nathanw * Redistribution and use in source and binary forms, with or without 10 1.1.2.2 nathanw * modification, are permitted provided that the following conditions 11 1.1.2.2 nathanw * are met: 12 1.1.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 13 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer. 14 1.1.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 15 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 16 1.1.2.2 nathanw * documentation and/or other materials provided with the distribution. 17 1.1.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 18 1.1.2.2 nathanw * must display the following acknowledgement: 19 1.1.2.2 nathanw * This product includes software developed for the NetBSD Project by 20 1.1.2.2 nathanw * Wasabi Systems, Inc. 21 1.1.2.2 nathanw * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.1.2.2 nathanw * or promote products derived from this software without specific prior 23 1.1.2.2 nathanw * written permission. 24 1.1.2.2 nathanw * 25 1.1.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.1.2.2 nathanw * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.1.2.2 nathanw * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.1.2.2 nathanw * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.1.2.2 nathanw * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.1.2.2 nathanw * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.1.2.2 nathanw * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.1.2.2 nathanw * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.1.2.2 nathanw * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.1.2.2 nathanw * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.1.2.2 nathanw * POSSIBILITY OF SUCH DAMAGE. 36 1.1.2.2 nathanw */ 37 1.1.2.2 nathanw 38 1.1.2.2 nathanw /* 39 1.1.2.2 nathanw * Intel i80321 I/O Processor memory controller support. 40 1.1.2.2 nathanw */ 41 1.1.2.2 nathanw 42 1.1.2.2 nathanw #include <sys/param.h> 43 1.1.2.2 nathanw #include <sys/systm.h> 44 1.1.2.2 nathanw 45 1.1.2.2 nathanw #include <machine/bus.h> 46 1.1.2.2 nathanw 47 1.1.2.2 nathanw #include <arm/xscale/i80321reg.h> 48 1.1.2.2 nathanw #include <arm/xscale/i80321var.h> 49 1.1.2.2 nathanw 50 1.1.2.2 nathanw /* 51 1.1.2.2 nathanw * i80321_sdram_bounds: 52 1.1.2.2 nathanw * 53 1.1.2.2 nathanw * Retrieve the start and size of SDRAM. 54 1.1.2.2 nathanw */ 55 1.1.2.2 nathanw void 56 1.1.2.2 nathanw i80321_sdram_bounds(bus_space_tag_t st, bus_space_handle_t sh, 57 1.1.2.2 nathanw paddr_t *start, psize_t *size) 58 1.1.2.2 nathanw { 59 1.1.2.2 nathanw uint32_t sdbr, sbr0, sbr1; 60 1.1.2.2 nathanw uint32_t bank0, bank1; 61 1.1.2.2 nathanw 62 1.1.2.2 nathanw sdbr = bus_space_read_4(st, sh, MCU_SDBR); 63 1.1.2.2 nathanw sbr0 = bus_space_read_4(st, sh, MCU_SBR0); 64 1.1.2.2 nathanw sbr1 = bus_space_read_4(st, sh, MCU_SBR1); 65 1.1.2.2 nathanw 66 1.1.2.2 nathanw #ifdef VERBOSE_INIT_ARM 67 1.1.2.2 nathanw printf("i80321: SBDR = 0x%08x SBR0 = 0x%08x SBR1 = 0x%08x\n", 68 1.1.2.2 nathanw sdbr, sbr0, sbr1); 69 1.1.2.2 nathanw #endif 70 1.1.2.2 nathanw 71 1.1.2.2 nathanw *start = sdbr; 72 1.1.2.2 nathanw 73 1.1.2.2 nathanw sdbr = (sdbr >> 25) & 0x1f; 74 1.1.2.2 nathanw 75 1.1.2.2 nathanw sbr0 &= 0x3f; 76 1.1.2.2 nathanw sbr1 &= 0x3f; 77 1.1.2.2 nathanw 78 1.1.2.2 nathanw bank0 = (sbr0 - sdbr) << 25; 79 1.1.2.2 nathanw bank1 = (sbr1 - sbr0) << 25; 80 1.1.2.2 nathanw 81 1.1.2.2 nathanw #ifdef VERBOSE_INIT_ARM 82 1.1.2.2 nathanw printf("i80321: BANK0 = 0x%08x BANK1 = 0x%08x\n", bank0, bank1); 83 1.1.2.2 nathanw #endif 84 1.1.2.2 nathanw 85 1.1.2.2 nathanw *size = bank0 + bank1; 86 1.1.2.2 nathanw } 87
Indexes created Wed Oct 01 18:09:54 GMT 2025