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#include <vka/sel4_arch/kobject_t.h>
21
22enum _arm_kobject_type {
23    KOBJECT_PAGE_DIRECTORY = KOBJECT_MODE_NUM_TYPES,
24    KOBJECT_PAGE_TABLE,
25    KOBJECT_ARCH_NUM_TYPES,
26};
27
28/*
29 * Get the size (in bits) of the untyped memory required to
30 * create an object of the given size
31 */
32static inline seL4_Word arch_kobject_get_size(kobject_t type, seL4_Word objectSize)
33{
34    switch (type) {
35    /* ARM-specific frames. */
36    case KOBJECT_FRAME:
37        switch (objectSize) {
38        case seL4_PageBits:
39        case seL4_LargePageBits:
40            return objectSize;
41        }
42    /* If frame size was unknown fall through to default case as it
43     * might be a mode specific frame size */
44    default:
45        return arm_mode_kobject_get_size(type, objectSize);
46    }
47}
48
49static inline seL4_Word arch_kobject_get_type(kobject_t type, seL4_Word objectSize)
50{
51    switch (type) {
52    case KOBJECT_PAGE_DIRECTORY:
53        return seL4_ARM_PageDirectoryObject;
54    case KOBJECT_PAGE_TABLE:
55        return seL4_ARM_PageTableObject;
56    /* ARM-specific frames. */
57    case KOBJECT_FRAME:
58        switch (objectSize) {
59        case seL4_PageBits:
60            return seL4_ARM_SmallPageObject;
61        case seL4_LargePageBits:
62            return seL4_ARM_LargePageObject;
63        default:
64            return arm_mode_kobject_get_type(type, objectSize);
65        }
66    default:
67        return arm_mode_kobject_get_type(type, objectSize);
68    }
69}
70
71