| // | |
| // Copyright (c) 2012-2014, ARM Limited. All rights reserved. | |
| // | |
| // SPDX-License-Identifier: BSD-2-Clause-Patent | |
| // | |
| // | |
| #include <AsmMacroIoLibV8.h> | |
| //VOID | |
| //ArmPlatformStackSet ( | |
| // IN UINTN StackBase, | |
| // IN UINTN MpId, | |
| // IN UINTN PrimaryStackSize, | |
| // IN UINTN SecondaryStackSize | |
| // ); | |
| ASM_FUNC(ArmPlatformStackSet) | |
| // Save parameters | |
| mov x26, x3 | |
| mov x25, x2 | |
| mov x24, x1 | |
| mov x23, x0 | |
| // Save the Link register | |
| mov x27, x30 | |
| // Identify Stack | |
| mov x0, x1 | |
| bl ASM_PFX(ArmPlatformIsPrimaryCore) | |
| cmp x0, #1 | |
| // Restore parameters | |
| mov x0, x23 | |
| mov x1, x24 | |
| mov x2, x25 | |
| mov x3, x26 | |
| // Restore the Link register | |
| mov x30, x27 | |
| b.ne 0f | |
| b ASM_PFX(ArmPlatformStackSetPrimary) | |
| 0:b ASM_PFX(ArmPlatformStackSetSecondary) | |
| //VOID | |
| //ArmPlatformStackSetPrimary ( | |
| // IN UINTN StackBase, | |
| // IN UINTN MpId, | |
| // IN UINTN PrimaryStackSize, | |
| // IN UINTN SecondaryStackSize | |
| // ); | |
| ASM_FUNC(ArmPlatformStackSetPrimary) | |
| // Add size of primary stack to StackBase | |
| add x0, x0, x2 | |
| // Compute SecondaryCoresCount * SecondaryCoreStackSize | |
| MOV32 (w1, FixedPcdGet32(PcdCoreCount) - 1) | |
| mul x3, x3, x1 | |
| // Set Primary Stack ((StackBase + PrimaryStackSize) + (SecondaryCoresCount * SecondaryCoreStackSize)) | |
| add sp, x0, x3 | |
| ret | |
| //VOID | |
| //ArmPlatformStackSetSecondary ( | |
| // IN UINTN StackBase, | |
| // IN UINTN MpId, | |
| // IN UINTN PrimaryStackSize, | |
| // IN UINTN SecondaryStackSize | |
| // ); | |
| ASM_FUNC(ArmPlatformStackSetSecondary) | |
| // Save the Link register | |
| mov x24, x30 | |
| mov sp, x0 | |
| // Get Core Position | |
| mov x0, x1 | |
| bl ASM_PFX(ArmPlatformGetCorePosition) | |
| mov x25, x0 | |
| // Get Primary Core Position | |
| bl ASM_PFX(ArmPlatformGetPrimaryCoreMpId) | |
| bl ASM_PFX(ArmPlatformGetCorePosition) | |
| // Get Secondary Core Position. We should get consecutive secondary stack number from 1...(CoreCount-1) | |
| cmp x25, x0 | |
| // Decrement the position if after the primary core | |
| cinc x25, x25, ls | |
| // Compute top of the secondary stack | |
| mul x3, x3, x25 | |
| // Set stack | |
| add sp, sp, x3 | |
| ret x24 |