1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "los_vm_boot.h"
33 #include "los_config.h"
34 #include "los_base.h"
35 #include "los_vm_zone.h"
36 #include "los_vm_map.h"
37 #include "los_memory_pri.h"
38 #include "los_vm_page.h"
39 #include "los_arch_mmu.h"
40
41
42 UINTPTR g_vmBootMemBase = (UINTPTR)&__bss_end;
43 BOOL g_kHeapInited = FALSE;
44
OsVmBootMemAlloc(size_t len)45 VOID *OsVmBootMemAlloc(size_t len)
46 {
47 UINTPTR ptr;
48
49 if (g_kHeapInited) {
50 VM_ERR("kernel heap has been initialized, do not to use boot memory allocation!");
51 return NULL;
52 }
53
54 ptr = LOS_Align(g_vmBootMemBase, sizeof(UINTPTR));
55 g_vmBootMemBase = ptr + LOS_Align(len, sizeof(UINTPTR));
56
57 return (VOID *)ptr;
58 }
59
OsSysMemInit(VOID)60 UINT32 OsSysMemInit(VOID)
61 {
62 STATUS_T ret;
63
64 #ifdef LOSCFG_KERNEL_VM
65 OsKSpaceInit();
66 #endif
67
68 ret = OsKHeapInit(OS_KHEAP_BLOCK_SIZE);
69 if (ret != LOS_OK) {
70 VM_ERR("OsKHeapInit fail\n");
71 return LOS_NOK;
72 }
73
74 #ifdef LOSCFG_KERNEL_VM
75 OsVmPageStartup();
76 g_kHeapInited = TRUE;
77 OsInitMappingStartUp();
78 #else
79 g_kHeapInited = TRUE;
80 #endif
81
82 return LOS_OK;
83 }
84