1262197Srwatson/*- 2262197Srwatson * Copyright (c) 2013 Robert N. M. Watson 3262197Srwatson * All rights reserved. 4262197Srwatson * 5262197Srwatson * This software was developed by SRI International and the University of 6262197Srwatson * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7262197Srwatson * ("CTSRD"), as part of the DARPA CRASH research programme. 8262197Srwatson * 9262197Srwatson * Redistribution and use in source and binary forms, with or without 10262197Srwatson * modification, are permitted provided that the following conditions 11262197Srwatson * are met: 12262197Srwatson * 1. Redistributions of source code must retain the above copyright 13262197Srwatson * notice, this list of conditions and the following disclaimer. 14262197Srwatson * 2. Redistributions in binary form must reproduce the above copyright 15262197Srwatson * notice, this list of conditions and the following disclaimer in the 16262197Srwatson * documentation and/or other materials provided with the distribution. 17262197Srwatson * 18262197Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19262197Srwatson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20262197Srwatson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21262197Srwatson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22262197Srwatson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23262197Srwatson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24262197Srwatson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25262197Srwatson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26262197Srwatson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27262197Srwatson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28262197Srwatson * SUCH DAMAGE. 29262197Srwatson * 30262197Srwatson * $FreeBSD: stable/11/stand/mips/beri/common/cfi.c 329175 2018-02-12 17:44:35Z kevans $ 31262197Srwatson */ 32262197Srwatson 33329175Skevans#include "stand.h" 34262197Srwatson#include "mips.h" 35262197Srwatson#include "cfi.h" 36262197Srwatson 37262197Srwatson/* 38262197Srwatson * Memory-mapped Intel StrataFlash mini-driver. Very mini. Nothing fancy -- 39262197Srwatson * and few seatbelts. 40262197Srwatson * 41262197Srwatson * XXXRW: Should we be making some effort to reset isf to a known-good state 42262197Srwatson * before starting, in case there was a soft reset mid-transaction. 43262197Srwatson * 44262197Srwatson * XXXRW: Would be nice to support multiple devices and also handle SD cards 45262197Srwatson * here ... and probably not too hard. 46262197Srwatson */ 47262197Srwatsonextern void *__cheri_flash_bootfs_vaddr__; 48262197Srwatsonextern void *__cheri_flash_bootfs_len__; 49262197Srwatson 50262197Srwatson#define CHERI_BOOTFS_BASE ((uintptr_t)&__cheri_flash_bootfs_vaddr__) 51262197Srwatson#define CHERI_BOOTFS_LENGTH ((uintptr_t)&__cheri_flash_bootfs_len__) 52262197Srwatson 53262197Srwatsonint 54262197Srwatsoncfi_read(void *buf, unsigned lba, unsigned nblk) 55262197Srwatson{ 56262197Srwatson 57262197Srwatson if ((lba << 9) + (nblk << 9) > CHERI_BOOTFS_LENGTH) 58262197Srwatson return (-1); 59262197Srwatson memcpy(buf, (void *)(CHERI_BOOTFS_BASE + (lba << 9)), nblk << 9); 60262197Srwatson return (0); 61262197Srwatson} 62262197Srwatson 63262197Srwatsonuint64_t 64262197Srwatsoncfi_get_mediasize(void) 65262197Srwatson{ 66262197Srwatson 67262197Srwatson return (CHERI_BOOTFS_LENGTH); 68262197Srwatson} 69262197Srwatson 70262197Srwatsonuint64_t 71262197Srwatsoncfi_get_sectorsize(void) 72262197Srwatson{ 73262197Srwatson 74262197Srwatson return (512); /* Always a good sector size. */ 75262197Srwatson} 76