#include <asm/deferred.h>
#include "cpu.h"
+#ifdef CONFIG_DEBUG_DUMP
+# define ENABLE_DUMP 1
+#else
+# define ENABLE_DUMP 0
+#endif
+
#define trace_buffer_save(x) \
do { \
+ if (!ENABLE_DUMP) \
+ break; \
(x) = bfin_read_TBUFCTL(); \
bfin_write_TBUFCTL((x) & ~TBUFEN); \
} while (0)
#define trace_buffer_restore(x) \
- bfin_write_TBUFCTL((x))
+ do { \
+ if (!ENABLE_DUMP) \
+ break; \
+ bfin_write_TBUFCTL((x)); \
+ } while (0);
/* The purpose of this map is to provide a mapping of address<->cplb settings
* rather than an exact map of what is actually addressable on the part. This
{
uint32_t ret = 0;
uint32_t trapnr = (regs->seqstat & EXCAUSE);
+ unsigned long tflags;
bool data = false;
+ /*
+ * Keep the trace buffer so that a miss here points people
+ * to the right place (their code). Crashes here rarely
+ * happen. If they do, only the Blackfin maintainer cares.
+ */
+ trace_buffer_save(tflags);
+
switch (trapnr) {
/* 0x26 - Data CPLB Miss */
case VEC_CPLB_M:
*/
if (last_cplb_fault_retx != regs->retx) {
last_cplb_fault_retx = regs->retx;
- return ret;
+ break;
}
}
uint32_t new_cplb_addr = 0, new_cplb_data = 0;
static size_t last_evicted;
size_t i;
- unsigned long tflags;
#ifdef CONFIG_EXCEPTION_DEFER
/* This should never happen */
bfin_panic(regs);
#endif
- /*
- * Keep the trace buffer so that a miss here points people
- * to the right place (their code). Crashes here rarely
- * happen. If they do, only the Blackfin maintainer cares.
- */
- trace_buffer_save(tflags);
-
new_cplb_addr = (data ? bfin_read_DCPLB_FAULT_ADDR() : bfin_read_ICPLB_FAULT_ADDR()) & ~(4 * 1024 * 1024 - 1);
for (i = 0; i < ARRAY_SIZE(bfin_memory_map); ++i) {
(data ? 'D' : 'I'), (void *)new_cplb_addr);
bfin_panic(regs);
} else
- debug("CPLB addr %p matches map 0x%p - 0x%p\n", new_cplb_addr, bfin_memory_map[i].start, bfin_memory_map[i].end);
+ debug("CPLB addr %p matches map 0x%p - 0x%p\n",
+ (void *)new_cplb_addr,
+ (void *)bfin_memory_map[i].start,
+ (void *)bfin_memory_map[i].end);
new_cplb_data = (data ? bfin_memory_map[i].data_flags : bfin_memory_map[i].inst_flags);
if (data) {
/* find the next unlocked entry and evict it */
i = last_evicted & 0xF;
- debug("last evicted = %i\n", i);
+ debug("last evicted = %zu\n", i);
CPLB_DATA = CPLB_DATA_BASE + i;
while (*CPLB_DATA & CPLB_LOCK) {
- debug("skipping %i %p - %08X\n", i, CPLB_DATA, *CPLB_DATA);
+ debug("skipping %zu %p - %08X\n", i, CPLB_DATA, *CPLB_DATA);
i = (i + 1) & 0xF; /* wrap around */
CPLB_DATA = CPLB_DATA_BASE + i;
}
CPLB_ADDR = CPLB_ADDR_BASE + i;
- debug("evicting entry %i: 0x%p 0x%08X\n", i, *CPLB_ADDR, *CPLB_DATA);
+ debug("evicting entry %zu: 0x%p 0x%08X\n", i,
+ (void *)*CPLB_ADDR, *CPLB_DATA);
last_evicted = i + 1;
/* need to turn off cplbs whenever we muck with the cplb table */
CPLB_ADDR = CPLB_ADDR_BASE;
CPLB_DATA = CPLB_DATA_BASE;
for (i = 0; i < 16; ++i)
- debug("%2i 0x%p 0x%08X\n", i, *CPLB_ADDR++, *CPLB_DATA++);
+ debug("%2zu 0x%p 0x%08X\n", i,
+ (void *)*CPLB_ADDR++, *CPLB_DATA++);
- trace_buffer_restore(tflags);
break;
}
#ifdef CONFIG_CMD_KGDB
#ifdef CONFIG_CMD_KGDB
if (level == 3) {
/* We need to handle this at EVT5, so try again */
+ bfin_dump(regs);
ret = 1;
break;
}
if (debugger_exception_handler && (*debugger_exception_handler)(regs))
- return 0;
+ break;
#endif
bfin_panic(regs);
}
+
+ trace_buffer_restore(tflags);
+
return ret;
}
-#ifdef CONFIG_DEBUG_DUMP
-# define ENABLE_DUMP 1
-#else
-# define ENABLE_DUMP 0
-#endif
-
#ifndef CONFIG_KALLSYMS
const char *symbol_lookup(unsigned long addr, unsigned long *caddr)
{
if (!address)
sprintf(buf, "<0x%p> /* Maybe null pointer? */", paddr);
else if (address >= CONFIG_SYS_MONITOR_BASE &&
- address < CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)
+ address < CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)
sprintf(buf, "<0x%p> /* somewhere in u-boot */", paddr);
else
sprintf(buf, "<0x%p> /* unknown address */", paddr);
printf("\n");
}
-void dump_bfin_trace_buffer(void)
+static void _dump_bfin_trace_buffer(void)
{
char buf[150];
- unsigned long tflags;
int i = 0;
if (!ENABLE_DUMP)
return;
- trace_buffer_save(tflags);
-
printf("Hardware Trace:\n");
if (bfin_read_TBUFSTAT() & TBUFCNT) {
printf(" Source : %s\n", buf);
}
}
+}
+void dump_bfin_trace_buffer(void)
+{
+ unsigned long tflags;
+ trace_buffer_save(tflags);
+ _dump_bfin_trace_buffer();
trace_buffer_restore(tflags);
}
-void bfin_panic(struct pt_regs *regs)
+void bfin_dump(struct pt_regs *regs)
{
- if (ENABLE_DUMP) {
- unsigned long tflags;
- trace_buffer_save(tflags);
- }
+ unsigned long tflags;
+
+ trace_buffer_save(tflags);
puts(
"\n"
"\n"
);
dump(regs);
- dump_bfin_trace_buffer();
+ _dump_bfin_trace_buffer();
puts("\n");
- bfin_reset_or_hang();
+
+ trace_buffer_restore(tflags);
+}
+
+void bfin_panic(struct pt_regs *regs)
+{
+ unsigned long tflags;
+ trace_buffer_save(tflags);
+ bfin_dump(regs);
+ panic("PANIC: Blackfin internal error");
}