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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 | .text\r |
| 19 | .align 3\r |
| 20 | \r |
| 21 | GCC_ASM_EXPORT(ArmPlatformStackSet)\r |
| 22 | GCC_ASM_EXPORT(ArmPlatformStackSetPrimary)\r |
| 23 | GCC_ASM_EXPORT(ArmPlatformStackSetSecondary)\r |
| 24 | \r |
| 25 | GCC_ASM_IMPORT(ArmPlatformGetCorePosition)\r |
| 26 | \r |
| 27 | GCC_ASM_IMPORT(gPcd_FixedAtBuild_PcdCoreCount)\r |
| 28 | GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore)\r |
| 29 | \r |
| 30 | //VOID\r |
| 31 | //ArmPlatformStackSet (\r |
| 32 | // IN UINTN StackBase,\r |
| 33 | // IN UINTN MpId,\r |
| 34 | // IN UINTN PrimaryStackSize,\r |
| 35 | // IN UINTN SecondaryStackSize\r |
| 36 | // );\r |
| 37 | ASM_PFX(ArmPlatformStackSet):\r |
| 38 | // Identify Stack\r |
| 39 | // Mask for ClusterId|CoreId\r |
| 40 | LoadConstantToReg (0xFFFF, r4)\r |
| 41 | and r1, r1, r4\r |
| 42 | // Is it the Primary Core ?\r |
| 43 | LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r4)\r |
| 44 | ldr r4, [r4]\r |
| 45 | cmp r1, r4\r |
| 46 | beq ASM_PFX(ArmPlatformStackSetPrimary)\r |
| 47 | bne ASM_PFX(ArmPlatformStackSetSecondary)\r |
| 48 | \r |
| 49 | //VOID\r |
| 50 | //ArmPlatformStackSetPrimary (\r |
| 51 | // IN UINTN StackBase,\r |
| 52 | // IN UINTN MpId,\r |
| 53 | // IN UINTN PrimaryStackSize,\r |
| 54 | // IN UINTN SecondaryStackSize\r |
| 55 | // );\r |
| 56 | ASM_PFX(ArmPlatformStackSetPrimary):\r |
| 57 | mov r4, lr\r |
| 58 | \r |
| 59 | // Add stack of primary stack to StackBase\r |
| 60 | add r0, r0, r2\r |
| 61 | \r |
| 62 | // Compute SecondaryCoresCount * SecondaryCoreStackSize\r |
| 63 | LoadConstantToReg (_gPcd_FixedAtBuild_PcdCoreCount, r1)\r |
| 64 | ldr r1, [r1]\r |
| 65 | sub r1, #1\r |
| 66 | mul r3, r3, r1\r |
| 67 | \r |
| 68 | // Set Primary Stack ((StackBase + PrimaryStackSize) + (SecondaryCoresCount * SecondaryCoreStackSize))\r |
| 69 | add sp, r0, r3\r |
| 70 | \r |
| 71 | bx r4\r |
| 72 | \r |
| 73 | //VOID\r |
| 74 | //ArmPlatformStackSetSecondary (\r |
| 75 | // IN UINTN StackBase,\r |
| 76 | // IN UINTN MpId,\r |
| 77 | // IN UINTN PrimaryStackSize,\r |
| 78 | // IN UINTN SecondaryStackSize\r |
| 79 | // );\r |
| 80 | ASM_PFX(ArmPlatformStackSetSecondary):\r |
| 81 | mov r4, lr\r |
| 82 | mov sp, r0\r |
| 83 | \r |
| 84 | // Get Core Position\r |
| 85 | mov r0, r1\r |
| 86 | bl ASM_PFX(ArmPlatformGetCorePosition)\r |
| 87 | mov r5, r0\r |
| 88 | \r |
| 89 | // Get Primary Core Position\r |
| 90 | LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r0)\r |
| 91 | ldr r0, [r0]\r |
| 92 | bl ASM_PFX(ArmPlatformGetCorePosition)\r |
| 93 | \r |
| 94 | // Get Secondary Core Position. We should get consecutive secondary stack number from 1...(CoreCount-1)\r |
| 95 | cmp r5, r0\r |
| 96 | subhi r5, r5, #1\r |
| 97 | add r5, r5, #1\r |
| 98 | \r |
| 99 | // Compute top of the secondary stack\r |
| 100 | mul r3, r3, r5\r |
| 101 | \r |
| 102 | // Set stack\r |
| 103 | add sp, sp, r3\r |
| 104 | \r |
| 105 | bx r4\r |
| 106 | \r |
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