Blackfin arch: the load address is not safe to point to as a workaround for ANOMALY 05000281
Now that we have moved head.S into the init section, the load
address is not safe to point to as a workaround for ANOMALY 05000281
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index a56b231..e3ad580 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -52,6 +52,15 @@
# define EX_SCRATCH_REG CYCLES
#endif
+#if ANOMALY_05000281
+ENTRY(_safe_speculative_execution)
+ NOP;
+ NOP;
+ NOP;
+ jump _safe_speculative_execution;
+ENDPROC(_safe_speculative_execution)
+#endif
+
#ifdef CONFIG_EXCPT_IRQ_SYSC_L1
.section .l1.text
#else
@@ -685,8 +694,8 @@
[p0] = p1;
csync;
#if ANOMALY_05000281
- r0.l = lo(CONFIG_BOOT_LOAD);
- r0.h = hi(CONFIG_BOOT_LOAD);
+ r0.l = _safe_speculative_execution;
+ r0.h = _safe_speculative_execution;
reti = r0;
#endif
r0 = 0x801f (z);
@@ -699,8 +708,8 @@
ENTRY(_lower_to_irq14)
#if ANOMALY_05000281
- r0.l = lo(CONFIG_BOOT_LOAD);
- r0.h = hi(CONFIG_BOOT_LOAD);
+ r0.l = _safe_speculative_execution;
+ r0.h = _safe_speculative_execution;
reti = r0;
#endif
r0 = 0x401f;