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17839a45 | 1 | //\r |
8a25bd7c | 2 | // Copyright (c) 2012-2013, ARM Limited. All rights reserved.\r |
17839a45 | 3 | //\r |
4 | // This program and the accompanying materials\r | |
5 | // are licensed and made available under the terms and conditions of the BSD License\r | |
6 | // which accompanies this distribution. The full text of the license may be found at\r | |
7 | // http://opensource.org/licenses/bsd-license.php\r | |
8 | //\r | |
9 | // THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | // WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | //\r | |
12 | //\r | |
13 | \r | |
14 | #include <AsmMacroIoLib.h>\r | |
15 | #include <Base.h>\r | |
16 | #include <AutoGen.h>\r | |
17 | \r | |
18 | INCLUDE AsmMacroIoLib.inc\r | |
19 | \r | |
20 | EXPORT ArmPlatformStackSet\r | |
21 | EXPORT ArmPlatformStackSetPrimary\r | |
22 | EXPORT ArmPlatformStackSetSecondary\r | |
23 | \r | |
8a25bd7c | 24 | IMPORT ArmPlatformIsPrimaryCore\r |
17839a45 | 25 | IMPORT ArmPlatformGetCorePosition\r |
8a25bd7c | 26 | IMPORT ArmPlatformGetPrimaryCoreMpId\r |
17839a45 | 27 | \r |
28 | IMPORT _gPcd_FixedAtBuild_PcdCoreCount\r | |
17839a45 | 29 | \r |
30 | PRESERVE8\r | |
31 | AREA ArmPlatformStackLib, CODE, READONLY\r | |
32 | \r | |
33 | //VOID\r | |
34 | //ArmPlatformStackSet (\r | |
35 | // IN UINTN StackBase,\r | |
36 | // IN UINTN MpId,\r | |
37 | // IN UINTN PrimaryStackSize,\r | |
38 | // IN UINTN SecondaryStackSize\r | |
39 | // );\r | |
40 | ArmPlatformStackSet FUNCTION\r | |
8a25bd7c OM |
41 | // Save parameters\r |
42 | mov r6, r3\r | |
43 | mov r5, r2\r | |
44 | mov r4, r1\r | |
45 | mov r3, r0\r | |
46 | \r | |
47 | // Save the Link register\r | |
48 | mov r7, lr\r | |
49 | \r | |
17839a45 | 50 | // Identify Stack\r |
8a25bd7c OM |
51 | mov r0, r1\r |
52 | bl ArmPlatformIsPrimaryCore\r | |
53 | cmp r0, #1\r | |
54 | \r | |
55 | // Restore parameters\r | |
56 | mov r0, r3\r | |
57 | mov r1, r4\r | |
58 | mov r2, r5\r | |
59 | mov r3, r6\r | |
60 | \r | |
61 | // Restore the Link register\r | |
62 | mov lr, r7\r | |
63 | \r | |
91c38d4e | 64 | beq ArmPlatformStackSetPrimary\r |
17839a45 | 65 | bne ArmPlatformStackSetSecondary\r |
66 | ENDFUNC\r | |
67 | \r | |
68 | //VOID\r | |
69 | //ArmPlatformStackSetPrimary (\r | |
70 | // IN UINTN StackBase,\r | |
71 | // IN UINTN MpId,\r | |
72 | // IN UINTN PrimaryStackSize,\r | |
73 | // IN UINTN SecondaryStackSize\r | |
74 | // );\r | |
75 | ArmPlatformStackSetPrimary FUNCTION\r | |
91c38d4e | 76 | mov r4, lr\r |
17839a45 | 77 | \r |
78 | // Add stack of primary stack to StackBase\r | |
91c38d4e | 79 | add r0, r0, r2\r |
17839a45 | 80 | \r |
81 | // Compute SecondaryCoresCount * SecondaryCoreStackSize\r | |
82 | LoadConstantToReg (_gPcd_FixedAtBuild_PcdCoreCount, r1)\r | |
91c38d4e RC |
83 | ldr r1, [r1]\r |
84 | sub r1, #1\r | |
85 | mul r3, r3, r1\r | |
17839a45 | 86 | \r |
87 | // Set Primary Stack ((StackBase + PrimaryStackSize) + (SecondaryCoresCount * SecondaryCoreStackSize))\r | |
91c38d4e | 88 | add sp, r0, r3\r |
17839a45 | 89 | \r |
90 | bx r4\r | |
91 | ENDFUNC\r | |
92 | \r | |
93 | //VOID\r | |
94 | //ArmPlatformStackSetSecondary (\r | |
95 | // IN UINTN StackBase,\r | |
96 | // IN UINTN MpId,\r | |
97 | // IN UINTN PrimaryStackSize,\r | |
98 | // IN UINTN SecondaryStackSize\r | |
99 | // );\r | |
100 | ArmPlatformStackSetSecondary FUNCTION\r | |
91c38d4e | 101 | mov r4, lr\r |
17839a45 | 102 | mov sp, r0\r |
103 | \r | |
104 | // Get Core Position\r | |
91c38d4e | 105 | mov r0, r1\r |
17839a45 | 106 | bl ArmPlatformGetCorePosition\r |
91c38d4e | 107 | mov r5, r0\r |
17839a45 | 108 | \r |
109 | // Get Primary Core Position\r | |
8a25bd7c | 110 | bl ArmPlatformGetPrimaryCoreMpId\r |
17839a45 | 111 | bl ArmPlatformGetCorePosition\r |
112 | \r | |
113 | // Get Secondary Core Position. We should get consecutive secondary stack number from 1...(CoreCount-1)\r | |
91c38d4e | 114 | cmp r5, r0\r |
17839a45 | 115 | subhi r5, r5, #1\r |
91c38d4e | 116 | add r5, r5, #1\r |
17839a45 | 117 | \r |
118 | // Compute top of the secondary stack\r | |
91c38d4e | 119 | mul r3, r3, r5\r |
17839a45 | 120 | \r |
121 | // Set stack\r | |
91c38d4e | 122 | add sp, sp, r3\r |
17839a45 | 123 | \r |
124 | bx r4\r | |
125 | ENDFUNC\r | |
126 | \r | |
127 | END\r |