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-rw-r--r--arch/blackfin/kernel/cplbinit.c4
-rw-r--r--arch/blackfin/kernel/traps.c4
-rw-r--r--arch/blackfin/mach-common/cplbmgr.S25
3 files changed, 22 insertions, 11 deletions
diff --git a/arch/blackfin/kernel/cplbinit.c b/arch/blackfin/kernel/cplbinit.c
index f2db6a5e2b5..7392ac2d2c2 100644
--- a/arch/blackfin/kernel/cplbinit.c
+++ b/arch/blackfin/kernel/cplbinit.c
@@ -163,8 +163,8 @@ static struct cplb_desc cplb_data[] = {
static u16 __init lock_kernel_check(u32 start, u32 end)
{
- if ((start <= (u32) _stext && end >= (u32) _end)
- || (start >= (u32) _stext && end <= (u32) _end))
+ if ((end <= (u32) _end && end >= (u32)_stext) ||
+ (start <= (u32) _end && start >= (u32)_stext))
return IN_KERNEL;
return 0;
}
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index ce9981b5339..fbdf999bd2b 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -670,8 +670,8 @@ void dump_bfin_regs(struct pt_regs *fp, void *retaddr)
printk("\n");
} else
printk("\n" KERN_NOTICE
- "Cannot look at the [PC] for it is"
- " in unreadable memory - sorry\n");
+ "Cannot look at the [PC] <%p> for it is"
+ " in unreadable memory - sorry\n", retaddr);
printk(KERN_NOTICE "\n" KERN_NOTICE "SEQUENCER STATUS:\n");
printk(KERN_NOTICE " SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n",
diff --git a/arch/blackfin/mach-common/cplbmgr.S b/arch/blackfin/mach-common/cplbmgr.S
index 946703ef48f..6f909cbfac7 100644
--- a/arch/blackfin/mach-common/cplbmgr.S
+++ b/arch/blackfin/mach-common/cplbmgr.S
@@ -73,7 +73,7 @@ ENTRY(_cplb_mgr)
/* ICPLB Miss Exception. We need to choose one of the
* currently-installed CPLBs, and replace it with one
* from the configuration table.
- */
+ */
P4.L = LO(ICPLB_FAULT_ADDR);
P4.H = HI(ICPLB_FAULT_ADDR);
@@ -222,7 +222,7 @@ ENTRY(_cplb_mgr)
/* See if failed address > start address */
CC = R4 <= R0(IU);
- IF !CC JUMP .Linext;
+ IF !CC JUMP .Linext;
/* extract page size (17:16)*/
R3 = EXTRACT(R2, R1.L) (Z);
@@ -271,16 +271,27 @@ ENTRY(_cplb_mgr)
/* FAILED CASES*/
.Lno_page_in_table:
- ( R7:4,P5:3 ) = [SP++];
R0 = CPLB_NO_ADDR_MATCH;
- RTS;
+ JUMP .Lfail_ret;
+
.Lall_locked:
- ( R7:4,P5:3 ) = [SP++];
R0 = CPLB_NO_UNLOCKED;
- RTS;
+ JUMP .Lfail_ret;
+
.Lprot_violation:
- ( R7:4,P5:3 ) = [SP++];
R0 = CPLB_PROT_VIOL;
+
+.Lfail_ret:
+ /* Make sure we turn protection/cache back on, even in the failing case */
+ BITSET(R5,ENICPLB_P);
+ CLI R2;
+ SSYNC; /* SSYNC required before writing to IMEM_CONTROL. */
+ .align 8;
+ [P4] = R5;
+ SSYNC;
+ STI R2;
+
+ ( R7:4,P5:3 ) = [SP++];
RTS;
.Ldcplb_write: