1/* 2 * Copyright 2017, Data61 3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO) 4 * ABN 41 687 119 230. 5 * 6 * This software may be distributed and modified according to the terms of 7 * the BSD 2-Clause license. Note that NO WARRANTY is provided. 8 * See "LICENSE_BSD2.txt" for details. 9 * 10 * @TAG(DATA61_BSD) 11 */ 12 13#pragma once 14 15#include <sel4/types.h> 16#include <assert.h> 17#include <autoconf.h> 18#include <sel4vka/gen_config.h> 19#include <utils/util.h> 20 21enum _arm_mode_kobject_type { 22 KOBJECT_FRAME = 0, 23 KOBJECT_PAGE_GLOBAL_DIRECTORY, 24 KOBJECT_PAGE_UPPER_DIRECTORY, 25 KOBJECT_MODE_NUM_TYPES, 26}; 27 28typedef int kobject_t; 29 30/* 31 * Get the size (in bits) of the untyped memory required to 32 * create an object of the given size 33 */ 34static inline seL4_Word arm_mode_kobject_get_size(kobject_t type, seL4_Word objectSize) 35{ 36 switch (type) { 37 /* ARM-specific frames. */ 38 case KOBJECT_FRAME: 39 switch (objectSize) { 40 case seL4_HugePageBits: 41 return objectSize; 42 default: 43 return 0; 44 } 45 case KOBJECT_PAGE_UPPER_DIRECTORY: 46 return seL4_PUDBits; 47 default: 48 /* Unknown object type. */ 49 ZF_LOGE("Unknown object type"); 50 return 0; 51 } 52} 53 54static inline seL4_Word arm_mode_kobject_get_type(kobject_t type, seL4_Word objectSize) 55{ 56 switch (type) { 57 case KOBJECT_FRAME: 58 switch (objectSize) { 59 case seL4_HugePageBits: 60 return seL4_ARM_HugePageObject; 61 default: 62 return -1; 63 } 64 case KOBJECT_PAGE_GLOBAL_DIRECTORY: 65 return seL4_ARM_PageGlobalDirectoryObject; 66 case KOBJECT_PAGE_UPPER_DIRECTORY: 67 return seL4_ARM_PageUpperDirectoryObject; 68 default: 69 /* Unknown object type. */ 70 ZF_LOGE("Unknown object type %d", type); 71 return -1; 72 } 73} 74 75