/* * Copyright (c) 2007 Pavel Jancik, Michal Kebrt * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * - The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @addtogroup arm32mm * @{ */ /** @file * @brief Frame related functions. */ #include #include #include #include #include /** Address of the last frame in the memory. */ uintptr_t last_frame = 0; /** Creates memory zones. */ void frame_arch_init(void) { /* all memory as one zone */ zone_create(0, ADDR2PFN(machine_get_memory_size()), BOOT_PAGE_TABLE_START_FRAME + BOOT_PAGE_TABLE_SIZE_IN_FRAMES, 0); last_frame = machine_get_memory_size(); /* blacklist boot page table */ frame_mark_unavailable(BOOT_PAGE_TABLE_START_FRAME, BOOT_PAGE_TABLE_SIZE_IN_FRAMES); } /** Frees the boot page table. */ void boot_page_table_free(void) { int i; for (i = 0; i < BOOT_PAGE_TABLE_SIZE_IN_FRAMES; i++) { frame_free(i * FRAME_SIZE + BOOT_PAGE_TABLE_ADDRESS); } } /** @} */