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| author | andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-07-02 12:00:00 +0000 |
|---|---|---|
| committer | andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-07-02 12:00:00 +0000 |
| commit | afdfe8f02bdf8d563554bb620c001072862b064e (patch) | |
| tree | 133edcc99dcde42e92643907f76a093647a322c2 /ArmRealViewEbPkg/Sec/Arm/ModuleEntryPoint.S | |
| parent | 7ee525b2c1f8d3d6da5f788364fe5be36a979c9c (diff) | |
| download | edk2-afdfe8f02bdf8d563554bb620c001072862b064e.tar.gz edk2-afdfe8f02bdf8d563554bb620c001072862b064e.tar.bz2 edk2-afdfe8f02bdf8d563554bb620c001072862b064e.zip | |
Remove ArmEbPkg and replace with ArmRealViewEbPkg. Ported ArmRealViewEbPkg to have a PEI phase, and added place holder CPU PEIM to ArmPkg. This ArmRealViewEbPkg now boots from SEC, PEI, DXE, BDS, to EBL in the ARM RealView system emulator that comes with RealView Pro.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10621 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmRealViewEbPkg/Sec/Arm/ModuleEntryPoint.S')
| -rwxr-xr-x | ArmRealViewEbPkg/Sec/Arm/ModuleEntryPoint.S | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/ArmRealViewEbPkg/Sec/Arm/ModuleEntryPoint.S b/ArmRealViewEbPkg/Sec/Arm/ModuleEntryPoint.S new file mode 100755 index 0000000000..2b5ee8f31a --- /dev/null +++ b/ArmRealViewEbPkg/Sec/Arm/ModuleEntryPoint.S @@ -0,0 +1,68 @@ +#------------------------------------------------------------------------------
+#
+# ARM EB Entry point. Reset vector in FV header will brach to
+# _ModuleEntryPoint.
+#
+# We use crazy macros, like LoadConstantToReg, since Xcode assembler
+# does not support = assembly syntax for ldr.
+#
+# Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#------------------------------------------------------------------------------
+
+#include <AsmMacroIoLib.h>
+#include <Base.h>
+#include <Library/PcdLib.h>
+#include <ArmEb/ArmEb.h>
+
+.text
+.align 3
+
+.globl ASM_PFX(CEntryPoint)
+.globl ASM_PFX(_ModuleEntryPoint)
+
+ASM_PFX(_ModuleEntryPoint):
+
+ // Turn off remapping NOR to 0. We can now use DRAM in low memory
+ // CAN'T DO THIS HERE -- BRANCH FROM RESET VECTOR IS RELATIVE AND REMAINS IN REMAPPED NOR
+ //MmioOr32 (EB_SP810_CTRL_BASE ,BIT8)
+
+ // Enable NEON register in case folks want to use them for optimizations (CopyMem)
+ mrc p15, 0, r0, c1, c0, 2
+ orr r0, r0, #0x00f00000 // Enable VPF access (V* instructions)
+ mcr p15, 0, r0, c1, c0, 2
+ mov r0, #0x40000000 // Set EN bit in FPEXC
+ mcr p10,#0x7,r0,c8,c0,#0 // msr FPEXC,r0 in ARM assembly
+
+ // Set CPU vectors to 0 (which is currently flash)
+ LoadConstantToReg (FixedPcdGet32(PcdCpuVectorBaseAddress) ,r0) // Get vector base
+ mcr p15, 0, r0, c12, c0, 0
+ isb // Sync changes to control registers
+
+ //
+ // Set stack based on PCD values. Need to do it this way to make C code work
+ // when it runs from FLASH.
+ //
+ LoadConstantToReg (FixedPcdGet32(PcdPrePiStackBase) ,r2) // stack base arg2
+ LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3) // stack size arg3
+ add r4, r2, r3
+ mov r13, r4
+
+ // Call C entry point
+ LoadConstantToReg (FixedPcdGet32(PcdMemorySize) ,r1) // memory size arg1
+ LoadConstantToReg (FixedPcdGet32(PcdMemoryBase) ,r0) // memory size arg0
+ blx ASM_PFX(CEntryPoint)
+
+ShouldNeverGetHere:
+ // _CEntryPoint should never return
+ b ShouldNeverGetHere
+
+
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