diff options
Diffstat (limited to 'os/common/startup/ARM/devices/SAMA5D2/boot.S')
| -rw-r--r-- | os/common/startup/ARM/devices/SAMA5D2/boot.S | 186 |
1 files changed, 93 insertions, 93 deletions
diff --git a/os/common/startup/ARM/devices/SAMA5D2/boot.S b/os/common/startup/ARM/devices/SAMA5D2/boot.S index 41f7d7b2d..87e00bdc9 100644 --- a/os/common/startup/ARM/devices/SAMA5D2/boot.S +++ b/os/common/startup/ARM/devices/SAMA5D2/boot.S @@ -1,93 +1,93 @@ -/* - 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 - * @{ - */ -#define FALSE 0 -#define TRUE 1 -#define _FROM_ASM_ -#include "chlicense.h" -#include "chconf.h" -#include "armparams.h" - -#if !defined(__DOXYGEN__) - - .set AIC_REDIR_KEY, 0x5B6C0E26 << 1 - .set SFR_SN1, 0xF8030050 - .set SFR_AICREDIR, 0xF8030054 - .set SFR_L2CC_HRAMC, 0xF8030058 - .set L2CC_CR, 0x00A00100 - - .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 - -#if (CH_CFG_SEC_WORLD == TRUE) - /* - * 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] -#endif - /* - * Reset SCTLR Settings - */ - mrc p15, 0, r0, c1, c0, 0 // Read CP15 System Control register - bic r0, r0, #(0x1 << 12) // Clear I bit 12 to disable I Cache - bic r0, r0, #(0x1 << 2) // Clear C bit 2 to disable D Cache - bic r0, r0, #0x1 // Clear M bit 0 to disable MMU - bic r0, r0, #(0x1 << 11) // Clear Z bit 11 to disable branch prediction - bic r0, r0, #(0x1 << 13) // Clear V bit 13 to disable hivecs - mcr p15, 0, r0, c1, c0, 0 // Write value back to CP15 System Control register - isb -#if (CH_CFG_SEC_WORLD == TRUE) - /* - * Turn off L2Cache - */ - bic r0, r0, #0x1 - ldr r1, =L2CC_CR - str r0, [r1] - /* - * Configure the L2 cache to be used as an internal SRAM - */ - bic r0, r0, #0x1 - ldr r1, =SFR_L2CC_HRAMC - str r0, [r1] -#endif - b Reset_Handler -#endif /* !defined(__DOXYGEN__) */ - -/** @} */ +/*
+ ChibiOS - Copyright (C) 2006..2018 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
+ * @{
+ */
+#define FALSE 0
+#define TRUE 1
+#define _FROM_ASM_
+#include "chlicense.h"
+#include "chconf.h"
+#include "armparams.h"
+
+#if !defined(__DOXYGEN__)
+
+ .set AIC_REDIR_KEY, 0x5B6C0E26 << 1
+ .set SFR_SN1, 0xF8030050
+ .set SFR_AICREDIR, 0xF8030054
+ .set SFR_L2CC_HRAMC, 0xF8030058
+ .set L2CC_CR, 0x00A00100
+
+ .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
+
+#if (CH_CFG_SEC_WORLD == TRUE)
+ /*
+ * 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]
+#endif
+ /*
+ * Reset SCTLR Settings
+ */
+ mrc p15, 0, r0, c1, c0, 0 // Read CP15 System Control register
+ bic r0, r0, #(0x1 << 12) // Clear I bit 12 to disable I Cache
+ bic r0, r0, #(0x1 << 2) // Clear C bit 2 to disable D Cache
+ bic r0, r0, #0x1 // Clear M bit 0 to disable MMU
+ bic r0, r0, #(0x1 << 11) // Clear Z bit 11 to disable branch prediction
+ bic r0, r0, #(0x1 << 13) // Clear V bit 13 to disable hivecs
+ mcr p15, 0, r0, c1, c0, 0 // Write value back to CP15 System Control register
+ isb
+#if (CH_CFG_SEC_WORLD == TRUE)
+ /*
+ * Turn off L2Cache
+ */
+ bic r0, r0, #0x1
+ ldr r1, =L2CC_CR
+ str r0, [r1]
+ /*
+ * Configure the L2 cache to be used as an internal SRAM
+ */
+ bic r0, r0, #0x1
+ ldr r1, =SFR_L2CC_HRAMC
+ str r0, [r1]
+#endif
+ b Reset_Handler
+#endif /* !defined(__DOXYGEN__) */
+
+/** @} */
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