diff options
Diffstat (limited to 'PandaBoardPkg/Library/PandaBoardLib/PandaBoardHelper.S')
| -rw-r--r-- | PandaBoardPkg/Library/PandaBoardLib/PandaBoardHelper.S | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/PandaBoardPkg/Library/PandaBoardLib/PandaBoardHelper.S b/PandaBoardPkg/Library/PandaBoardLib/PandaBoardHelper.S new file mode 100644 index 000000000..49fcf533a --- /dev/null +++ b/PandaBoardPkg/Library/PandaBoardLib/PandaBoardHelper.S @@ -0,0 +1,119 @@ +// +// Copyright (c) 2011, ARM Limited. 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 <AsmMacroIoLib.h> +#include <Base.h> +#include <Library/PcdLib.h> +#include <PandaBoard.h> +#include <AutoGen.h> + +.text +.align 3 + +GCC_ASM_EXPORT(ArmPlatformPrePiBootAction) +GCC_ASM_EXPORT(ArmPlatformGetCorePosition) + +GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore) +GCC_ASM_EXPORT(ArmPlatformPeiBootAction) + +/** + ArmPlatformPrePiBootAction + +**/ +ASM_PFX(ArmPlatformPrePiBootAction): + //relocate the relocator + sub r12,r12 + orr r12,r12,#0x80000000 + mov r3,r12 // relocator target address (0x80000000) + ldr r0, =relocator_start // relocator code start addr + ldr r1, =relocator_end // relocator end addr + sub r1,r1,r0 // compute relocator code size + lsr r1,r1,#0x2 // size in words +reloc_loop_reloc: // copy relocator + ldm r0!,{r2} + stm r3!,{r2} + subs r1,r1,#0x1 + bne reloc_loop_reloc + + // get chip id code + ldr r2,=0x4a002206 // control module id code address + ldrh r2,[r2] // get higher order 16b + lsl r2,r2,#0x14 + ldr r1,=0xb9400000 // compare with 4460 id + cmp r1,r2 // Z bit set if 4460 + + // update dmm conf + mov r0,#0x4e + lsl r0,r0,#0x18 // load DMM LISA base address + ldr r2,=0x482af000 // load MA LISA base address + ldr r1,[r0,#0x40] // get DMM LISA section 0 + str r1,[r0,#0x4c] // update DMM LISA section 3 + streq r1,[r2,#0x4c] // update MA LISA section 3 (when Z=1: 4460 only) + ldr r1,=0xff020100 // prepare LISA section 0 + str r1,[r0,#0x40] // update DMM LISA section 0 + streq r1,[r2,#0x40] // update MA LISA section 0 (when Z set: 4460 only) + bx r12 // jump to relocator + +relocator_start: + // update emif conf. + sub r2,r0,#0x1000000 + sub r1,r2,#0x1000000 + mov r0,#0x10 + str r0,[r1,#0xc] + str r0,[r2,#0xc] + ldr r0,[r1,#0x8] + orr r0,r0,#0x8 + str r0,[r1,#0x8] + str r0,[r2,#0x8] + + // copy + add r1,r12,#0x8000 + add r0,r1,#0x8000 + mov r10,#0x1 + lsl r11,r10,#0x5 +reloc_loop_1M: + lsl r10,r10,#0xA +reloc_loop_4K: + ldm r0!,{r2-r9} + stm r1!,{r2-r9} + subs r10,r10,#1 + bne reloc_loop_4K + add r0,r0,#0x8000 + subs r11,r11,#1 + add r10,r10,#0x1 + bne reloc_loop_1M + bx lr +relocator_end: + +//UINTN +//ArmPlatformGetCorePosition ( +// IN UINTN MpId +// ); +ASM_PFX(ArmPlatformGetCorePosition): + bx lr + +ASM_PFX(ArmPlatformIsPrimaryCore): + #Bits 8 through 11 are CPU ID + ldr r1, =0xf00 + and r0, r0, r1 + #id for core0 should be 0 + ldr r1, =0x0 + cmp r0, r1 + moveq r0, #1 + movne r0, #0 + mov pc, lr + +ASM_PFX(ArmPlatformPeiBootAction): + mov pc, lr + +ASM_FUNCTION_REMOVE_IF_UNREFERENCED |