176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* ----------------------------------------------------------------------- * 276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * 376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved 476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * Copyright 2009 H. Peter Anvin - All Rights Reserved 576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * 676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * Permission is hereby granted, free of charge, to any person 776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * obtaining a copy of this software and associated documentation 876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * files (the "Software"), to deal in the Software without 976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * restriction, including without limitation the rights to use, 1076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * copy, modify, merge, publish, distribute, sublicense, and/or 1176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * sell copies of the Software, and to permit persons to whom 1276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * the Software is furnished to do so, subject to the following 1376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * conditions: 1476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * 1576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * The above copyright notice and this permission notice shall 1676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * be included in all copies or substantial portions of the Software. 1776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * 1876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 1976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 2076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 2176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 2276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 2376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 2476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 2576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * OTHER DEALINGS IN THE SOFTWARE. 2676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * 2776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * ----------------------------------------------------------------------- */ 2876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 2976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 3076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * memscan.c 3176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * 3276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * Query the system for free memory 3376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 3476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 3576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#include <syslinux/memscan.h> 3676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 3776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanstatic LIST_HEAD(syslinux_memscan_head); 3876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 3976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 4076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * Add a memscan entry to the list. 4176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 4276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid syslinux_memscan_add(struct syslinux_memscan *entry) 4376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 4476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman list_add(&entry->next, &syslinux_memscan_head); 4576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 4676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 4776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 4876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * Build a new memscan entry and add it to the list. 4976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 5076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanint syslinux_memscan_new(int func(scan_memory_callback_t, void *data)) 5176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 5276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman struct syslinux_memscan *entry; 5376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 5476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman entry = malloc(sizeof *entry); 5576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (!entry) 5676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return -1; 5776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 5876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman entry->func = func; 5976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman syslinux_memscan_add(entry); 6076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return 0; 6176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 6276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 6376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanint syslinux_scan_memory(scan_memory_callback_t callback, void *data) 6476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 6576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman struct syslinux_memscan *entry; 6676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int rv = 0; 6776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 6876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman list_for_each_entry(entry, &syslinux_memscan_head, next) { 6976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman rv = entry->func(callback, data); 7076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (rv) 7176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman break; 7276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 7376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 7476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return rv; 7576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 76