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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2012-11-22 11:50:50 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2012-11-22 11:50:50 +0000 |
| commit | a4357743064453c12daa5d22d3f7fcd3196a10d1 (patch) | |
| tree | 12703c2068bf73e4150da2a3c4f977d5c2d525e0 | |
| parent | 57618ff11dd6e4539ef46f36599db48a40cbb181 (diff) | |
| download | ChibiOS-a4357743064453c12daa5d22d3f7fcd3196a10d1.tar.gz ChibiOS-a4357743064453c12daa5d22d3f7fcd3196a10d1.tar.bz2 ChibiOS-a4357743064453c12daa5d22d3f7fcd3196a10d1.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4836 35acf78f-673a-0410-8e92-d51de3d6d3f4
| -rw-r--r-- | os/ports/GCC/PPC/SPC560BCxx/bam.s | 35 | ||||
| -rw-r--r-- | os/ports/GCC/PPC/crt0.s | 6 |
2 files changed, 37 insertions, 4 deletions
diff --git a/os/ports/GCC/PPC/SPC560BCxx/bam.s b/os/ports/GCC/PPC/SPC560BCxx/bam.s index afb7b93b8..0e3905107 100644 --- a/os/ports/GCC/PPC/SPC560BCxx/bam.s +++ b/os/ports/GCC/PPC/SPC560BCxx/bam.s @@ -31,7 +31,40 @@ /* BAM info, SWT off, WTE off, VLE from settings.*/
.section .bam, "ax"
.long 0x015A0000
- .long _boot_address
+ .long .clear_ecc
+
+ /* 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.*/
+.clear_ecc:
+ 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:
+ b _boot_address
#endif /* !defined(__DOXYGEN__) */
diff --git a/os/ports/GCC/PPC/crt0.s b/os/ports/GCC/PPC/crt0.s index d20cb7ffb..80dc4bdc5 100644 --- a/os/ports/GCC/PPC/crt0.s +++ b/os/ports/GCC/PPC/crt0.s @@ -36,8 +36,8 @@ _boot_address: /*
* Stack setup.
*/
- lis %r1, __ram_end__@h
- ori %r1, %r1, __ram_end__@l
+ lis %r1, __process_stack_end__@h
+ ori %r1, %r1, __process_stack_end__@l
li %r0, 0
stwu %r0, -8(%r1)
/*
@@ -45,7 +45,7 @@ _boot_address: */
lis %r4, __ivpr_base__@h
ori %r4, %r4, __ivpr_base__@l
- mtIVPR %r4
+ mtIVPR %r4
/*
* Small sections registers initialization.
*/
|