From 1d94e371e6f172f90956f1c906cd61beaebc5b8d Mon Sep 17 00:00:00 2001 From: isiora Date: Fri, 22 Sep 2017 10:21:52 +0000 Subject: Init boot file git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10674 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/common/startup/ARM/devices/SAMA5D2/boot.S | 56 ++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 os/common/startup/ARM/devices/SAMA5D2/boot.S diff --git a/os/common/startup/ARM/devices/SAMA5D2/boot.S b/os/common/startup/ARM/devices/SAMA5D2/boot.S new file mode 100644 index 000000000..d507ea8b4 --- /dev/null +++ b/os/common/startup/ARM/devices/SAMA5D2/boot.S @@ -0,0 +1,56 @@ +/* + ChibiOS - Copyright (C) 2006..2017 Giovanni Di Sirio + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +/** + * @file SAMA5D2/boot.S + * @brief SAMA5D2 boot-related code. + * + * @addtogroup SAMA5D2_BOOT + * @{ + */ +#if !defined(__DOXYGEN__) + + .set AIC_REDIR_KEY, 0x5B6C0E26 << 1 + .set SFR_SN1, 0xF8030050 + .set SFR_AICREDIR, 0xF8030054 + + .section .boot + .code 32 + .balign 4 +/* + * Boot initialization code + */ + .global Boot_Handler +Boot_Handler: + /* + * Set VBAR to system vectors table + */ + ldr r0, =_start + mcr p15, 0, r0, c12, c0, 0 + /* + * Do not redirect secure interrupts to AIC + */ + ldr r0, =AIC_REDIR_KEY + ldr r1, =SFR_SN1 + ldr r1, [r1] + eor r0, r0, r1 + bic r0, r0, #0x1 + ldr r1, =SFR_AICREDIR + str r0, [r1] + b Reset_Handler +#endif /* !defined(__DOXYGEN__) */ + +/** @} */ -- cgit v1.2.3