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1 | //\r |
| 2 | // Copyright (c) 2012, ARM Limited. All rights reserved.\r |
| 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 |
| 24 | IMPORT ArmPlatformGetCorePosition\r |
| 25 | \r |
| 26 | IMPORT _gPcd_FixedAtBuild_PcdCoreCount\r |
| 27 | IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCore\r |
| 28 | \r |
| 29 | PRESERVE8\r |
| 30 | AREA ArmPlatformStackLib, CODE, READONLY\r |
| 31 | \r |
| 32 | //VOID\r |
| 33 | //ArmPlatformStackSet (\r |
| 34 | // IN UINTN StackBase,\r |
| 35 | // IN UINTN MpId,\r |
| 36 | // IN UINTN PrimaryStackSize,\r |
| 37 | // IN UINTN SecondaryStackSize\r |
| 38 | // );\r |
| 39 | ArmPlatformStackSet FUNCTION\r |
| 40 | // Identify Stack\r |
| 41 | // Mask for ClusterId|CoreId\r |
| 42 | LoadConstantToReg (0xFFFF, r4)\r |
| 43 | and r1, r1, r4\r |
| 44 | // Is it the Primary Core ?\r |
| 45 | LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r4)\r |
| 46 | ldr r4, [r4]\r |
| 47 | cmp r1, r4\r |
| 48 | beq ArmPlatformStackSetPrimary\r |
| 49 | bne ArmPlatformStackSetSecondary\r |
| 50 | ENDFUNC\r |
| 51 | \r |
| 52 | //VOID\r |
| 53 | //ArmPlatformStackSetPrimary (\r |
| 54 | // IN UINTN StackBase,\r |
| 55 | // IN UINTN MpId,\r |
| 56 | // IN UINTN PrimaryStackSize,\r |
| 57 | // IN UINTN SecondaryStackSize\r |
| 58 | // );\r |
| 59 | ArmPlatformStackSetPrimary FUNCTION\r |
| 60 | mov r4, lr\r |
| 61 | \r |
| 62 | // Add stack of primary stack to StackBase\r |
| 63 | add r0, r0, r2\r |
| 64 | \r |
| 65 | // Compute SecondaryCoresCount * SecondaryCoreStackSize\r |
| 66 | LoadConstantToReg (_gPcd_FixedAtBuild_PcdCoreCount, r1)\r |
| 67 | ldr r1, [r1]\r |
| 68 | sub r1, #1\r |
| 69 | mul r3, r3, r1\r |
| 70 | \r |
| 71 | // Set Primary Stack ((StackBase + PrimaryStackSize) + (SecondaryCoresCount * SecondaryCoreStackSize))\r |
| 72 | add sp, r0, r3\r |
| 73 | \r |
| 74 | bx r4\r |
| 75 | ENDFUNC\r |
| 76 | \r |
| 77 | //VOID\r |
| 78 | //ArmPlatformStackSetSecondary (\r |
| 79 | // IN UINTN StackBase,\r |
| 80 | // IN UINTN MpId,\r |
| 81 | // IN UINTN PrimaryStackSize,\r |
| 82 | // IN UINTN SecondaryStackSize\r |
| 83 | // );\r |
| 84 | ArmPlatformStackSetSecondary FUNCTION\r |
| 85 | mov r4, lr\r |
| 86 | mov sp, r0\r |
| 87 | \r |
| 88 | // Get Core Position\r |
| 89 | mov r0, r1\r |
| 90 | bl ArmPlatformGetCorePosition\r |
| 91 | mov r5, r0\r |
| 92 | \r |
| 93 | // Get Primary Core Position\r |
| 94 | LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r0)\r |
| 95 | ldr r0, [r0]\r |
| 96 | bl ArmPlatformGetCorePosition\r |
| 97 | \r |
| 98 | // Get Secondary Core Position. We should get consecutive secondary stack number from 1...(CoreCount-1)\r |
| 99 | cmp r5, r0\r |
| 100 | subhi r5, r5, #1\r |
| 101 | add r5, r5, #1\r |
| 102 | \r |
| 103 | // Compute top of the secondary stack\r |
| 104 | mul r3, r3, r5\r |
| 105 | \r |
| 106 | // Set stack\r |
| 107 | add sp, sp, r3\r |
| 108 | \r |
| 109 | bx r4\r |
| 110 | ENDFUNC\r |
| 111 | \r |
| 112 | END\r |
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