| Kangheui Won | d8928e4 | 2021-04-29 15:08:29 +1000 | [diff] [blame] | 1 | /***************************************************************************** |
| 2 | * |
| 3 | * Copyright (c) 2019, Advanced Micro Devices, Inc. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * * Neither the name of Advanced Micro Devices, Inc. nor the names of |
| 14 | * its contributors may be used to endorse or promote products derived |
| 15 | * from this software without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 20 | * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY |
| 21 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 22 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 23 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 24 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 26 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | * |
| 28 | ***************************************************************************/ |
| 29 | |
| 30 | #include <arch/asm.h> |
| 31 | #include <bl_uapp/bl_errorcodes_public.h> |
| 32 | |
| 33 | .global Main |
| 34 | .global _psp_vs_start |
| 35 | |
| 36 | .global PSP_VERSTAGE_STACK_END |
| 37 | |
| 38 | .arm |
| 39 | .text |
| 40 | .section "PSP_HEADER_DATA", "aw", %note |
| 41 | |
| 42 | //============================================================================== |
| 43 | // First 256 bytes of the binary image contain the header. |
| 44 | // Executable code starts from offset 0x100. |
| 45 | //============================================================================== |
| 46 | #include "bl_uapp_header.inc" |
| 47 | |
| 48 | //============================================================================== |
| 49 | // This is entry point to the binary which is called by main Boot Loader. |
| 50 | //============================================================================== |
| 51 | |
| 52 | ENTRY(_psp_vs_start) |
| 53 | |
| 54 | ldr sp, =PSP_VERSTAGE_STACK_END // stack pointer |
| 55 | |
| 56 | // Return value contains Virtual Address of mapped stack |
| 57 | // |
| 58 | ldr lr, =ShouldNotBeReached // return address |
| 59 | |
| 60 | ldr r2, =Main // pass control to verstage main function |
| 61 | blx r2 |
| 62 | |
| 63 | // This point should not be reached. The Main() function should return |
| 64 | // to main BL using Svc_Exit(). |
| 65 | // |
| 66 | ShouldNotBeReached: |
| 67 | mov r0, #BL_ERR_GENERIC // Returned from Main |
| 68 | svc #0x0 // SVC_EXIT |
| 69 | |
| 70 | ENDPROC(_psp_vs_start) |
| 71 | .end |