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| author | Giovanni Di Sirio <gdisirio@gmail.com> | 2016-06-28 11:45:23 +0000 |
|---|---|---|
| committer | Giovanni Di Sirio <gdisirio@gmail.com> | 2016-06-28 11:45:23 +0000 |
| commit | 98e42289275e60e582d8bbf080ea356d306ef8e9 (patch) | |
| tree | ea4cb9900af77d4f7978eaf149c444b38af73b07 /os/common/startup/e200/devices/SPC560BCxx/boot.S | |
| parent | 5c8ea3df2c13476ec48059e2a69bf1bef1889d42 (diff) | |
| download | ChibiOS-98e42289275e60e582d8bbf080ea356d306ef8e9.tar.gz ChibiOS-98e42289275e60e582d8bbf080ea356d306ef8e9.tar.bz2 ChibiOS-98e42289275e60e582d8bbf080ea356d306ef8e9.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@9674 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/common/startup/e200/devices/SPC560BCxx/boot.S')
| -rw-r--r-- | os/common/startup/e200/devices/SPC560BCxx/boot.S | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/os/common/startup/e200/devices/SPC560BCxx/boot.S b/os/common/startup/e200/devices/SPC560BCxx/boot.S new file mode 100644 index 000000000..f7a99c2d7 --- /dev/null +++ b/os/common/startup/e200/devices/SPC560BCxx/boot.S @@ -0,0 +1,214 @@ +/*
+ ChibiOS - Copyright (C) 2006..2016 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 SPC560BCxx/boot.s
+ * @brief SPC560BCxx boot-related code.
+ *
+ * @addtogroup PPC_BOOT
+ * @{
+ */
+
+#include "boot.h"
+
+#if !defined(__DOXYGEN__)
+
+ /* BAM record.*/
+ .section .boot, "ax"
+
+ .long 0x015A0000
+ .long _reset_address
+
+ .align 2
+ .globl _reset_address
+ .type _reset_address, @function
+_reset_address:
+#if BOOT_PERFORM_CORE_INIT
+ bl _coreinit
+#endif
+ bl _ivinit
+
+#if BOOT_RELOCATE_IN_RAM
+ /*
+ * Image relocation in RAM.
+ */
+ lis %r4, __ram_reloc_start__@h
+ ori %r4, %r4, __ram_reloc_start__@l
+ lis %r5, __ram_reloc_dest__@h
+ ori %r5, %r5, __ram_reloc_dest__@l
+ lis %r6, __ram_reloc_end__@h
+ ori %r6, %r6, __ram_reloc_end__@l
+.relloop:
+ cmpl cr0, %r4, %r6
+ bge cr0, .relend
+ lwz %r7, 0(%r4)
+ addi %r4, %r4, 4
+ stw %r7, 0(%r5)
+ addi %r5, %r5, 4
+ b .relloop
+.relend:
+ lis %r3, _boot_address@h
+ ori %r3, %r3, _boot_address@l
+ mtctr %r3
+ bctrl
+#else
+ b _boot_address
+#endif
+
+#if BOOT_PERFORM_CORE_INIT
+ .align 2
+_coreinit:
+ /*
+ * RAM clearing, this device requires a write to all RAM location in
+ * order to initialize the ECC detection hardware, this is going to
+ * slow down the startup but there is no way around.
+ */
+ xor %r0, %r0, %r0
+ xor %r1, %r1, %r1
+ xor %r2, %r2, %r2
+ xor %r3, %r3, %r3
+ xor %r4, %r4, %r4
+ xor %r5, %r5, %r5
+ xor %r6, %r6, %r6
+ xor %r7, %r7, %r7
+ xor %r8, %r8, %r8
+ xor %r9, %r9, %r9
+ xor %r10, %r10, %r10
+ xor %r11, %r11, %r11
+ xor %r12, %r12, %r12
+ xor %r13, %r13, %r13
+ xor %r14, %r14, %r14
+ xor %r15, %r15, %r15
+ xor %r16, %r16, %r16
+ xor %r17, %r17, %r17
+ xor %r18, %r18, %r18
+ xor %r19, %r19, %r19
+ xor %r20, %r20, %r20
+ xor %r21, %r21, %r21
+ xor %r22, %r22, %r22
+ xor %r23, %r23, %r23
+ xor %r24, %r24, %r24
+ xor %r25, %r25, %r25
+ xor %r26, %r26, %r26
+ xor %r27, %r27, %r27
+ xor %r28, %r28, %r28
+ xor %r29, %r29, %r29
+ xor %r30, %r30, %r30
+ xor %r31, %r31, %r31
+ lis %r4, __ram_start__@h
+ ori %r4, %r4, __ram_start__@l
+ lis %r5, __ram_end__@h
+ ori %r5, %r5, __ram_end__@l
+.cleareccloop:
+ cmpl %cr0, %r4, %r5
+ bge %cr0, .cleareccend
+ stmw %r16, 0(%r4)
+ addi %r4, %r4, 64
+ b .cleareccloop
+.cleareccend:
+
+ /*
+ * Branch prediction enabled.
+ */
+ li %r3, BOOT_BUCSR_DEFAULT
+ mtspr 1013, %r3 /* BUCSR */
+
+ blr
+#endif /* BOOT_PERFORM_CORE_INIT */
+
+ /*
+ * Exception vectors initialization.
+ */
+ .align 2
+_ivinit:
+ /* MSR initialization.*/
+ lis %r3, BOOT_MSR_DEFAULT@h
+ ori %r3, %r3, BOOT_MSR_DEFAULT@l
+ mtMSR %r3
+
+ /* IVPR initialization.*/
+ lis %r3, __ivpr_base__@h
+ ori %r3, %r3, __ivpr_base__@l
+ mtIVPR %r3
+
+ blr
+
+ .section .ivors, "ax"
+
+ .globl IVORS
+IVORS:
+ b _IVOR0
+ .align 4
+ b _IVOR1
+ .align 4
+ b _IVOR2
+ .align 4
+ b _IVOR3
+ .align 4
+ b _IVOR4
+ .align 4
+ b _IVOR5
+ .align 4
+ b _IVOR6
+ .align 4
+ b _IVOR7
+ .align 4
+ b _IVOR8
+ .align 4
+ b _IVOR9
+ .align 4
+ b _IVOR10
+ .align 4
+ b _IVOR11
+ .align 4
+ b _IVOR12
+ .align 4
+ b _IVOR13
+ .align 4
+ b _IVOR14
+ .align 4
+ b _IVOR15
+
+ .section .handlers, "ax"
+
+ /*
+ * Default IVOR handlers.
+ */
+ .align 2
+ .weak _IVOR0, _IVOR1, _IVOR2, _IVOR3, _IVOR4, _IVOR5
+ .weak _IVOR6, _IVOR7, _IVOR8, _IVOR9, _IVOR10, _IVOR11
+ .weak _IVOR12, _IVOR13, _IVOR14, _IVOR15
+_IVOR0:
+_IVOR1:
+_IVOR2:
+_IVOR3:
+_IVOR5:
+_IVOR6:
+_IVOR7:
+_IVOR8:
+_IVOR9:
+_IVOR11:
+_IVOR12:
+_IVOR13:
+_IVOR14:
+_IVOR15:
+ .global _unhandled_exception
+_unhandled_exception:
+ b _unhandled_exception
+
+#endif /* !defined(__DOXYGEN__) */
+
+/** @} */
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