ArmPlatformGetPrimaryCoreMpId returns the MPID of the primary core.
The primary core might not be known at build time (eg: the platform allows
the boot CPU to be changed through board config).
This function is used during the secondary core stack initialization to know
the position of the secondary core in the SoC.
A secondary core that is at the position N, with N greater than the primary
core position, will be at the position N-1 in the list of secondary stacks
(the primary core has its own separate bigger stack).
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Acked-by: Ryan Harkin <ryan.harkin@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14345
6f19259b-4bc3-4df7-8a09-
765794883524
.align 2\r
\r
GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)\r
.align 2\r
\r
GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)\r
+GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId)\r
\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore)\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask)\r
\r
\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore)\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask)\r
\r
+//UINTN\r
+//ArmPlatformGetPrimaryCoreMpId (\r
+// VOID\r
+// );\r
+ASM_PFX(ArmPlatformGetPrimaryCoreMpId):\r
+ LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r0)\r
+ ldr r0, [r0]\r
+ bx lr\r
+\r
//UINTN\r
//ArmPlatformIsPrimaryCore (\r
// IN UINTN MpId\r
//UINTN\r
//ArmPlatformIsPrimaryCore (\r
// IN UINTN MpId\r
INCLUDE AsmMacroIoLib.inc\r
\r
EXPORT ArmPlatformIsPrimaryCore\r
INCLUDE AsmMacroIoLib.inc\r
\r
EXPORT ArmPlatformIsPrimaryCore\r
+ EXPORT ArmPlatformGetPrimaryCoreMpId\r
\r
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCore\r
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask\r
\r
AREA CTA9x4Helper, CODE, READONLY\r
\r
\r
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCore\r
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask\r
\r
AREA CTA9x4Helper, CODE, READONLY\r
\r
+//UINTN\r
+//ArmPlatformGetPrimaryCoreMpId (\r
+// VOID\r
+// );\r
+ArmPlatformGetPrimaryCoreMpId FUNCTION\r
+ LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r0)\r
+ ldr r0, [r0]\r
+ bx lr\r
+ ENDFUNC\r
+\r
//UINTN\r
//ArmPlatformIsPrimaryCore (\r
// IN UINTN MpId\r
//UINTN\r
//ArmPlatformIsPrimaryCore (\r
// IN UINTN MpId\r
\r
GCC_ASM_EXPORT(ArmGetCpuCountPerCluster)\r
GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)\r
\r
GCC_ASM_EXPORT(ArmGetCpuCountPerCluster)\r
GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)\r
+GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId)\r
\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore)\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask)\r
\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore)\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask)\r
mrc p15, 4, r0, c15, c0, 0\r
bx lr\r
\r
mrc p15, 4, r0, c15, c0, 0\r
bx lr\r
\r
+//UINTN\r
+//ArmPlatformGetPrimaryCoreMpId (\r
+// VOID\r
+// );\r
+ASM_PFX(ArmPlatformGetPrimaryCoreMpId):\r
+ LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r0)\r
+ ldr r0, [r0]\r
+ bx lr\r
+\r
# IN None\r
# OUT r0 = number of cores present in the system\r
ASM_PFX(ArmGetCpuCountPerCluster):\r
# IN None\r
# OUT r0 = number of cores present in the system\r
ASM_PFX(ArmGetCpuCountPerCluster):\r
\r
EXPORT ArmGetCpuCountPerCluster\r
EXPORT ArmPlatformIsPrimaryCore\r
\r
EXPORT ArmGetCpuCountPerCluster\r
EXPORT ArmPlatformIsPrimaryCore\r
+ EXPORT ArmPlatformGetPrimaryCoreMpId\r
\r
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCore\r
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask\r
\r
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCore\r
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCoreMask\r
+//UINTN\r
+//ArmPlatformGetPrimaryCoreMpId (\r
+// VOID\r
+// );\r
+ArmPlatformGetPrimaryCoreMpId FUNCTION\r
+ LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r0)\r
+ ldr r0, [r0]\r
+ bx lr\r
+ ENDFUNC\r
+\r
// IN None\r
// OUT r0 = number of cores present in the system\r
ArmGetCpuCountPerCluster FUNCTION\r
// IN None\r
// OUT r0 = number of cores present in the system\r
ArmGetCpuCountPerCluster FUNCTION\r
+/**\r
+ Return the MpId of the primary core\r
+\r
+ This function returns the MpId of the primary core.\r
+ This function might be called from assembler before any stack is set.\r
+\r
+ @return Return the MpId of the primary core\r
+\r
+**/\r
+UINTN\r
+ArmPlatformGetPrimaryCoreMpId (\r
+ VOID\r
+ );\r
+\r
/**\r
Return the current Boot Mode\r
\r
/**\r
Return the current Boot Mode\r
\r
.align 3\r
\r
GCC_ASM_EXPORT(ArmPlatformGetCorePosition)\r
.align 3\r
\r
GCC_ASM_EXPORT(ArmPlatformGetCorePosition)\r
+GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId)\r
GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)\r
\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore)\r
GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)\r
\r
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore)\r
add r0, r1, r0, LSR #7\r
bx lr\r
\r
add r0, r1, r0, LSR #7\r
bx lr\r
\r
+//UINTN\r
+//ArmPlatformGetPrimaryCoreMpId (\r
+// VOID\r
+// );\r
+ASM_PFX(ArmPlatformGetPrimaryCoreMpId):\r
+ LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r0)\r
+ ldr r0, [r0]\r
+ bx lr\r
\r
//UINTN\r
//ArmPlatformIsPrimaryCore (\r
\r
//UINTN\r
//ArmPlatformIsPrimaryCore (\r
INCLUDE AsmMacroIoLib.inc\r
\r
EXPORT ArmPlatformGetCorePosition\r
INCLUDE AsmMacroIoLib.inc\r
\r
EXPORT ArmPlatformGetCorePosition\r
+ EXPORT ArmPlatformGetPrimaryCoreMpId\r
EXPORT ArmPlatformIsPrimaryCore\r
\r
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCore\r
EXPORT ArmPlatformIsPrimaryCore\r
\r
IMPORT _gPcd_FixedAtBuild_PcdArmPrimaryCore\r
+//UINTN\r
+//ArmPlatformGetPrimaryCoreMpId (\r
+// VOID\r
+// );\r
+ArmPlatformGetPrimaryCoreMpId FUNCTION\r
+ LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, r0)\r
+ ldr r0, [r0]\r
+ bx lr\r
+ ENDFUNC\r
+\r
//UINTN\r
//ArmPlatformIsPrimaryCore (\r
// IN UINTN MpId\r
//UINTN\r
//ArmPlatformIsPrimaryCore (\r
// IN UINTN MpId\r