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authorWolfgang Denk <wd@denx.de>2007-03-22 00:00:03 +0100
committerWolfgang Denk <wd@denx.de>2007-03-22 00:00:03 +0100
commita17824c749aac3df0bbb528bb5d33af68296b0b1 (patch)
tree399efb15b55d6992279eef98fa6878852d403352 /cpu/bf533/cplbhdlr.S
parent2a8dfe08359a1b663418b2faa1da1d7bce34d302 (diff)
parentb2777c087b5a564e9209988873da4ec749f85aad (diff)
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Merge with /home/wd/git/u-boot/custodian/u-boot-blackfin
Diffstat (limited to 'cpu/bf533/cplbhdlr.S')
-rw-r--r--cpu/bf533/cplbhdlr.S193
1 files changed, 0 insertions, 193 deletions
diff --git a/cpu/bf533/cplbhdlr.S b/cpu/bf533/cplbhdlr.S
deleted file mode 100644
index 61be5bb..0000000
--- a/cpu/bf533/cplbhdlr.S
+++ /dev/null
@@ -1,193 +0,0 @@
-/* Copyright (C) 2003 Analog Devices, Inc. All Rights Reserved.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.
- *
- * Blackfin BF533/2.6 support : LG Soft India
- */
-
-
-/* Include an exception handler to invoke the CPLB manager
- */
-
-#include <asm-blackfin/linkage.h>
-#include <asm/cplb.h>
-#include <asm/entry.h>
-
-
-.text
-
-.globl _cplb_hdr;
-.type _cplb_hdr, STT_FUNC;
-.extern _cplb_mgr;
-.type _cplb_mgr, STT_FUNC;
-.extern __unknown_exception_occurred;
-.type __unknown_exception_occurred, STT_FUNC;
-.extern __cplb_miss_all_locked;
-.type __cplb_miss_all_locked, STT_FUNC;
-.extern __cplb_miss_without_replacement;
-.type __cplb_miss_without_replacement, STT_FUNC;
-.extern __cplb_protection_violation;
-.type __cplb_protection_violation, STT_FUNC;
-.extern panic_pv;
-
-.align 2;
-
-ENTRY(_cplb_hdr)
- SSYNC;
- [--SP] = ( R7:0, P5:0 );
- [--SP] = ASTAT;
- [--SP] = SEQSTAT;
- [--SP] = I0;
- [--SP] = I1;
- [--SP] = I2;
- [--SP] = I3;
- [--SP] = LT0;
- [--SP] = LB0;
- [--SP] = LC0;
- [--SP] = LT1;
- [--SP] = LB1;
- [--SP] = LC1;
- R2 = SEQSTAT;
-
- /*Mask the contents of SEQSTAT and leave only EXCAUSE in R2*/
- R2 <<= 26;
- R2 >>= 26;
-
- R1 = 0x23; /* Data access CPLB protection violation */
- CC = R2 == R1;
- IF !CC JUMP not_data_write;
- R0 = 2; /* is a write to data space*/
- JUMP is_icplb_miss;
-
-not_data_write:
- R1 = 0x2C; /* CPLB miss on an instruction fetch */
- CC = R2 == R1;
- R0 = 0; /* is_data_miss == False*/
- IF CC JUMP is_icplb_miss;
-
- R1 = 0x26;
- CC = R2 == R1;
- IF !CC JUMP unknown;
-
- R0 = 1; /* is_data_miss == True*/
-
-is_icplb_miss:
-
-#if ( defined (CONFIG_BLKFIN_CACHE) || defined (CONFIG_BLKFIN_DCACHE))
-#if ( defined (CONFIG_BLKFIN_CACHE) && !defined (CONFIG_BLKFIN_DCACHE))
- R1 = CPLB_ENABLE_ICACHE;
-#endif
-#if ( !defined (CONFIG_BLKFIN_CACHE) && defined (CONFIG_BLKFIN_DCACHE))
- R1 = CPLB_ENABLE_DCACHE;
-#endif
-#if ( defined (CONFIG_BLKFIN_CACHE) && defined (CONFIG_BLKFIN_DCACHE))
- R1 = CPLB_ENABLE_DCACHE | CPLB_ENABLE_ICACHE;
-#endif
-#else
- R1 = 0;
-#endif
-
- [--SP] = RETS;
- CALL _cplb_mgr;
- RETS = [SP++];
- CC = R0 == 0;
- IF !CC JUMP not_replaced;
- LC1 = [SP++];
- LB1 = [SP++];
- LT1 = [SP++];
- LC0 = [SP++];
- LB0 = [SP++];
- LT0 = [SP++];
- I3 = [SP++];
- I2 = [SP++];
- I1 = [SP++];
- I0 = [SP++];
- SEQSTAT = [SP++];
- ASTAT = [SP++];
- ( R7:0, P5:0 ) = [SP++];
- RTS;
-
-unknown:
- [--SP] = RETS;
- CALL __unknown_exception_occurred;
- RETS = [SP++];
- JUMP unknown;
-not_replaced:
- CC = R0 == CPLB_NO_UNLOCKED;
- IF !CC JUMP next_check;
- [--SP] = RETS;
- CALL __cplb_miss_all_locked;
- RETS = [SP++];
-next_check:
- CC = R0 == CPLB_NO_ADDR_MATCH;
- IF !CC JUMP next_check2;
- [--SP] = RETS;
- CALL __cplb_miss_without_replacement;
- RETS = [SP++];
- JUMP not_replaced;
-next_check2:
- CC = R0 == CPLB_PROT_VIOL;
- IF !CC JUMP strange_return_from_cplb_mgr;
- [--SP] = RETS;
- CALL __cplb_protection_violation;
- RETS = [SP++];
- JUMP not_replaced;
-strange_return_from_cplb_mgr:
- IDLE;
- CSYNC;
- JUMP strange_return_from_cplb_mgr;
-
-/************************************
- * Diagnostic exception handlers
- */
-
-__cplb_miss_all_locked:
- sp += -12;
- R0 = CPLB_NO_UNLOCKED;
- call panic_bfin;
- SP += 12;
- RTS;
-
- __cplb_miss_without_replacement:
- sp += -12;
- R0 = CPLB_NO_ADDR_MATCH;
- call panic_bfin;
- SP += 12;
- RTS;
-
-__cplb_protection_violation:
- sp += -12;
- R0 = CPLB_PROT_VIOL;
- call panic_bfin;
- SP += 12;
- RTS;
-
-__unknown_exception_occurred:
-
- /* This function is invoked by the default exception
- * handler, if it does not recognise the kind of
- * exception that has occurred. In other words, the
- * default handler only handles some of the system's
- * exception types, and it does not expect any others
- * to occur. If your application is going to be using
- * other kinds of exceptions, you must replace the
- * default handler with your own, that handles all the
- * exceptions you will use.
- *
- * Since there's nothing we can do, we just loop here
- * at what we hope is a suitably informative label.
- */
-
- IDLE;
-do_not_know_what_to_do:
- CSYNC;
- JUMP __unknown_exception_occurred;
-
- RTS;
-.__unknown_exception_occurred.end:
-.global __unknown_exception_occurred;
-.type __unknown_exception_occurred, STT_FUNC;
-
-panic_bfin:
- RTS;