From 2ef2b01e07c02db339f34004445734a2dbdd80e1 Mon Sep 17 00:00:00 2001 From: AJFISH Date: Sun, 6 Dec 2009 01:57:05 +0000 Subject: Adding support for BeagleBoard. ArmPkg - Supoprt for ARM specific things that can change as the architecture changes. Plus semihosting JTAG drivers. EmbeddedPkg - Generic support for an embeddded platform. Including a light weight command line shell. BeagleBoardPkg - Platform specifics for BeagleBoard. SD Card works, but USB has issues. Looks like a bug in the open source USB stack (Our internal stack works fine). git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9518 6f19259b-4bc3-4df7-8a09-765794883524 --- BeagleBoardPkg/Sec/Arm/Macro.inc | 67 ++++++++++++++++++++ BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.S | 93 ++++++++++++++++++++++++++++ BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.asm | 95 +++++++++++++++++++++++++++++ 3 files changed, 255 insertions(+) create mode 100755 BeagleBoardPkg/Sec/Arm/Macro.inc create mode 100755 BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.S create mode 100755 BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.asm (limited to 'BeagleBoardPkg/Sec/Arm') diff --git a/BeagleBoardPkg/Sec/Arm/Macro.inc b/BeagleBoardPkg/Sec/Arm/Macro.inc new file mode 100755 index 0000000000..cacfef976a --- /dev/null +++ b/BeagleBoardPkg/Sec/Arm/Macro.inc @@ -0,0 +1,67 @@ +//%HEADER% + MACRO + MmioWrite32Macro $Address, $Data + ldr r1, = ($Address) + ldr r0, = ($Data) + str r0, [r1] + MEND + + MACRO + MmioOr32Macro $Address, $OrData + ldr r1, =($Address) + ldr r2, =($OrData) + ldr r0, [r1] + orr r0, r0, r2 + str r0, [r1] + MEND + + MACRO + MmioAnd32Macro $Address, $AndData + ldr r1, =($Address) + ldr r2, =($AndData) + ldr r0, [r1] + and r0, r0, r2 + str r0, [r1] + MEND + + MACRO + MmioAndThenOr32Macro $Address, $AndData, $OrData + ldr r1, =($Address) + ldr r0, [r1] + ldr r2, =($AndData) + and r0, r0, r2 + ldr r2, =($OrData) + orr r0, r0, r2 + str r0, [r1] + MEND + + MACRO + MmioWriteFromReg32Macro $Address, $Reg + ldr r1, =($Address) + str $Reg, [r1] + MEND + + MACRO + MmioRead32Macro $Address + ldr r1, =($Address) + ldr r0, [r1] + MEND + + MACRO + MmioReadToReg32Macro $Address, $Reg + ldr r1, =($Address) + ldr $Reg, [r1] + MEND + + MACRO + LoadConstantMacro $Data + ldr r0, =($Data) + MEND + + MACRO + LoadConstantToRegMacro $Data, $Reg + ldr $Reg, =($Data) + MEND + + END + \ No newline at end of file diff --git a/BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.S b/BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.S new file mode 100755 index 0000000000..0ae8da6a24 --- /dev/null +++ b/BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.S @@ -0,0 +1,93 @@ +#------------------------------------------------------------------------------ +# +# Copyright (c) 2008-2009 Apple Inc. All rights reserved. +# +# All rights reserved. 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 +#include + +.text +.align 3 + +.globl ASM_PFX(CEntryPoint) +.globl ASM_PFX(_ModuleEntryPoint) + +ASM_PFX(_ModuleEntryPoint): + + //Disable L2 cache + mrc p15, 0, r0, c1, c0, 1 // read Auxiliary Control Register + bic r0, r0, #0x00000002 // disable L2 cache + mcr p15, 0, r0, c1, c0, 1 // store Auxiliary Control Register + + //Enable Strict alignment checking & Instruction cache + mrc p15, 0, r0, c1, c0, 0 + bic r0, r0, #0x00002300 /* clear bits 13, 9:8 (--V- --RS) */ + bic r0, r0, #0x00000005 /* clear bits 0, 2 (---- -C-M) */ + orr r0, r0, #0x00000002 /* set bit 1 (A) Align */ + orr r0, r0, #0x00001000 /* set bit 12 (I) enable I-Cache */ + mcr p15, 0, r0, c1, c0, 0 + + // Set CPU vectors to start of DRAM + mov r0, #0x80000000 + mcr p15, 0, r0, c12, c0, 0 + + /* before we call C code, lets setup the stack pointer */ +stack_pointer_setup: + + // + // 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 + + //Enter IRQ mode and set up IRQ stack pointer + mov r0,#0x12|0x80|0x40 + msr CPSR_c,r0 + mov r13,r4 + + //Enter Abort mode and set up Abort stack pointer + mov r0,#0x17|0x80|0x40 + msr CPSR_c,r0 + sub r4, r4, #0x400 + mov r13,r4 + + //Enter Undefined mode and set up Undefined stack pointer + mov r0,#0x1b|0x80|0x40 + msr CPSR_c,r0 + sub r4, r4, #0x400 + mov r13,r4 + + //Enter SVC mode and set up SVC stack pointer + mov r0,#0x13|0x80|0x40 + msr CPSR_c,r0 + sub r4, r4, #0x400 + mov r13,r4 + + //Enter System mode and set up System stack pointer + mov r0,#0x1f|0x80|0x40 + msr CPSR_c,r0 + sub r4, r4, #0x400 + mov r13,r4 + + // Call C entry point + mov r0, #0x80000000 /* memory base arg0 */ + mov r1, #0x10000000 /* memory size arg1 */ + + bl ASM_PFX(CEntryPoint) /* Assume C code is ARM */ + +ShouldNeverGetHere: + /* _CEntryPoint should never return */ + b ShouldNeverGetHere + + diff --git a/BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.asm b/BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.asm new file mode 100755 index 0000000000..fb30e4dd59 --- /dev/null +++ b/BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.asm @@ -0,0 +1,95 @@ +//------------------------------------------------------------------------------ +// +// Copyright (c) 2008-2009 Apple Inc. All rights reserved. +// +// All rights reserved. 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 +#include +#include + INCLUDE AsmMacroIoLib.inc + + IMPORT CEntryPoint + EXPORT _ModuleEntryPoint + + PRESERVE8 + AREA ModuleEntryPoint, CODE, READONLY + + +_ModuleEntryPoint + + //Disable L2 cache + mrc p15, 0, r0, c1, c0, 1 // read Auxiliary Control Register + bic r0, r0, #0x00000002 // disable L2 cache + mcr p15, 0, r0, c1, c0, 1 // store Auxiliary Control Register + + //Enable Strict alignment checking & Instruction cache + mrc p15, 0, r0, c1, c0, 0 + bic r0, r0, #0x00002300 /* clear bits 13, 9:8 (--V- --RS) */ + bic r0, r0, #0x00000005 /* clear bits 0, 2 (---- -C-M) */ + orr r0, r0, #0x00000002 /* set bit 1 (A) Align */ + orr r0, r0, #0x00001000 /* set bit 12 (I) enable I-Cache */ + mcr p15, 0, r0, c1, c0, 0 + + // Set CPU vectors to start of DRAM + mov r0, #0x80000000 + mcr p15, 0, r0, c12, c0, 0 + /* before we call C code, lets setup the stack pointer in internal RAM*/ +stack_pointer_setup + + // + // 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 + + //Enter IRQ mode and set up IRQ stack pointer + mov r0,#0x12|0x80|0x40 + msr CPSR_c,r0 + mov r13,r4 + + //Enter Abort mode and set up Abort stack pointer + mov r0,#0x17|0x80|0x40 + msr CPSR_c,r0 + sub r4, r4, #0x400 + mov r13,r4 + + //Enter Undefined mode and set up Undefined stack pointer + mov r0,#0x1b|0x80|0x40 + msr CPSR_c,r0 + sub r4, r4, #0x400 + mov r13,r4 + + //Enter SVC mode and set up SVC stack pointer + mov r0,#0x13|0x80|0x40 + msr CPSR_c,r0 + sub r4, r4, #0x400 + mov r13,r4 + + //Enter System mode and set up System stack pointer + mov r0,#0x1f|0x80|0x40 + msr CPSR_c,r0 + sub r4, r4, #0x400 + mov r13,r4 + + // Call C entry point + mov r0, #0x80000000 /* memory base arg0 */ + mov r1, #0x08000000 /* memory size arg1 */ + blx CEntryPoint /* Assume C code is thumb */ + +ShouldNeverGetHere + /* _CEntryPoint should never return */ + b ShouldNeverGetHere + + END + -- cgit v1.2.3