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authorGraf Yang <graf.yang@analog.com>2009-01-07 23:14:39 +0800
committerBryan Wu <cooloney@kernel.org>2009-01-07 23:14:39 +0800
commit6b3087c64a92a36ae20d33479b4df6d7afc910d4 (patch)
tree95984fc623658ebf150d0d912a7f6c5a0301a5a9 /arch/blackfin/mach-common/head.S
parentc51b4488cd5bff08ed5690a8f303ff7f0894da2a (diff)
Blackfin arch: SMP supporting patchset: Blackfin header files and machine common code
Blackfin dual core BF561 processor can support SMP like features. https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like In this patch, we provide SMP extend to Blackfin header files and machine common code Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/mach-common/head.S')
-rw-r--r--arch/blackfin/mach-common/head.S29
1 files changed, 13 insertions, 16 deletions
diff --git a/arch/blackfin/mach-common/head.S b/arch/blackfin/mach-common/head.S
index c1dcaebbd3a..a621ae44481 100644
--- a/arch/blackfin/mach-common/head.S
+++ b/arch/blackfin/mach-common/head.S
@@ -13,6 +13,7 @@
#include <asm/blackfin.h>
#include <asm/thread_info.h>
#include <asm/trace.h>
+#include <asm/asm-offsets.h>
__INIT
@@ -111,33 +112,26 @@ ENTRY(__start)
* This happens here, since L1 gets clobbered
* below
*/
- p0.l = _saved_retx;
- p0.h = _saved_retx;
+ GET_PDA(p0, r0);
+ r7 = [p0 + PDA_RETX];
p1.l = _init_saved_retx;
p1.h = _init_saved_retx;
- r0 = [p0];
- [p1] = r0;
+ [p1] = r7;
- p0.l = _saved_dcplb_fault_addr;
- p0.h = _saved_dcplb_fault_addr;
+ r7 = [p0 + PDA_DCPLB];
p1.l = _init_saved_dcplb_fault_addr;
p1.h = _init_saved_dcplb_fault_addr;
- r0 = [p0];
- [p1] = r0;
+ [p1] = r7;
- p0.l = _saved_icplb_fault_addr;
- p0.h = _saved_icplb_fault_addr;
+ r7 = [p0 + PDA_ICPLB];
p1.l = _init_saved_icplb_fault_addr;
p1.h = _init_saved_icplb_fault_addr;
- r0 = [p0];
- [p1] = r0;
+ [p1] = r7;
- p0.l = _saved_seqstat;
- p0.h = _saved_seqstat;
+ r7 = [p0 + PDA_SEQSTAT];
p1.l = _init_saved_seqstat;
p1.h = _init_saved_seqstat;
- r0 = [p0];
- [p1] = r0;
+ [p1] = r7;
#endif
/* Initialize stack pointer */
@@ -255,6 +249,9 @@ ENTRY(_real_start)
sp = sp + p1;
usp = sp;
fp = sp;
+ sp += -12;
+ call _init_pda
+ sp += 12;
jump.l _start_kernel;
ENDPROC(_real_start)