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-rw-r--r--cpu/bf533/traps.c205
1 files changed, 191 insertions, 14 deletions
diff --git a/cpu/bf533/traps.c b/cpu/bf533/traps.c
index 37470d583..5e2ce9bfb 100644
--- a/cpu/bf533/traps.c
+++ b/cpu/bf533/traps.c
@@ -42,6 +42,18 @@
#include <asm/page.h>
#include <asm/machdep.h>
#include "cpu.h"
+#include <asm/arch/anomaly.h>
+#include <asm/cplb.h>
+
+#ifdef DEBUG
+#define pr_debug(fmt,arg...) printf(fmt,##arg)
+#else
+static inline int
+ __attribute__ ((format(printf, 1, 2))) pr_debug(const char *fmt, ...)
+{
+ return 0;
+}
+#endif
void init_IRQ(void)
{
@@ -51,23 +63,188 @@ void init_IRQ(void)
void process_int(unsigned long vec, struct pt_regs *fp)
{
+ printf("interrupt\n");
return;
}
+extern unsigned int icplb_table[page_descriptor_table_size][2];
+extern unsigned int dcplb_table[page_descriptor_table_size][2];
+
+unsigned long last_cplb_fault_retx;
+
+static unsigned int cplb_sizes[4] =
+ { 1024, 4 * 1024, 1024 * 1024, 4 * 1024 * 1024 };
+
+void trap_c(struct pt_regs *regs)
+{
+ unsigned int addr;
+ unsigned long trapnr = (regs->seqstat) & SEQSTAT_EXCAUSE;
+ unsigned int i, j, size, *I0, *I1;
+ unsigned short data = 0;
+
+ switch (trapnr) {
+ /* 0x26 - Data CPLB Miss */
+ case VEC_CPLB_M:
+
+#ifdef ANOMALY_05000261
+ /*
+ * Work around an anomaly: if we see a new DCPLB fault,
+ * return without doing anything. Then,
+ * if we get the same fault again, handle it.
+ */
+ addr = last_cplb_fault_retx;
+ last_cplb_fault_retx = regs->retx;
+ printf("this time, curr = 0x%08x last = 0x%08x\n",
+ addr, last_cplb_fault_retx);
+ if (addr != last_cplb_fault_retx)
+ goto trap_c_return;
+#endif
+ data = 1;
+
+ case VEC_CPLB_I_M:
+
+ if (data) {
+ addr = *pDCPLB_FAULT_ADDR;
+ } else {
+ addr = *pICPLB_FAULT_ADDR;
+ }
+ for (i = 0; i < page_descriptor_table_size; i++) {
+ if (data) {
+ size = cplb_sizes[dcplb_table[i][1] >> 16];
+ j = dcplb_table[i][0];
+ } else {
+ size = cplb_sizes[icplb_table[i][1] >> 16];
+ j = icplb_table[i][0];
+ }
+ if ((j <= addr) && ((j + size) > addr)) {
+ pr_debug("found %i 0x%08x\n", i, j);
+ break;
+ }
+ }
+ if (i == page_descriptor_table_size) {
+ printf("something is really wrong\n");
+ do_reset(NULL, 0, 0, NULL);
+ }
+
+ /* Turn the cache off */
+ if (data) {
+ __builtin_bfin_ssync();
+ asm(" .align 8; ");
+ *(unsigned int *)DMEM_CONTROL &=
+ ~(ACACHE_BCACHE | ENDCPLB | PORT_PREF0);
+ __builtin_bfin_ssync();
+ } else {
+ __builtin_bfin_ssync();
+ asm(" .align 8; ");
+ *(unsigned int *)IMEM_CONTROL &= ~(IMC | ENICPLB);
+ __builtin_bfin_ssync();
+ }
+
+ if (data) {
+ I0 = (unsigned int *)DCPLB_ADDR0;
+ I1 = (unsigned int *)DCPLB_DATA0;
+ } else {
+ I0 = (unsigned int *)ICPLB_ADDR0;
+ I1 = (unsigned int *)ICPLB_DATA0;
+ }
+
+ j = 0;
+ while (*I1 & CPLB_LOCK) {
+ pr_debug("skipping %i %08p - %08x\n", j, I1, *I1);
+ *I0++;
+ *I1++;
+ j++;
+ }
+
+ pr_debug("remove %i 0x%08x 0x%08x\n", j, *I0, *I1);
+
+ for (; j < 15; j++) {
+ pr_debug("replace %i 0x%08x 0x%08x\n", j, I0, I0 + 1);
+ *I0++ = *(I0 + 1);
+ *I1++ = *(I1 + 1);
+ }
+
+ if (data) {
+ *I0 = dcplb_table[i][0];
+ *I1 = dcplb_table[i][1];
+ I0 = (unsigned int *)DCPLB_ADDR0;
+ I1 = (unsigned int *)DCPLB_DATA0;
+ } else {
+ *I0 = icplb_table[i][0];
+ *I1 = icplb_table[i][1];
+ I0 = (unsigned int *)ICPLB_ADDR0;
+ I1 = (unsigned int *)ICPLB_DATA0;
+ }
+
+ for (j = 0; j < 16; j++) {
+ pr_debug("%i 0x%08x 0x%08x\n", j, *I0++, *I1++);
+ }
+
+ /* Turn the cache back on */
+ if (data) {
+ j = *(unsigned int *)DMEM_CONTROL;
+ __builtin_bfin_ssync();
+ asm(" .align 8; ");
+ *(unsigned int *)DMEM_CONTROL =
+ ACACHE_BCACHE | ENDCPLB | PORT_PREF0 | j;
+ __builtin_bfin_ssync();
+ } else {
+ __builtin_bfin_ssync();
+ asm(" .align 8; ");
+ *(unsigned int *)IMEM_CONTROL = IMC | ENICPLB;
+ __builtin_bfin_ssync();
+ }
+
+ break;
+ default:
+ /* All traps come here */
+ printf("code=[0x%x], ", (unsigned int)(regs->seqstat & 0x3f));
+ printf("stack frame=0x%x, ", (unsigned int)regs);
+ printf("bad PC=0x%04x\n", (unsigned int)regs->pc);
+ dump(regs);
+ printf("\n\n");
+
+ printf("Unhandled IRQ or exceptions!\n");
+ printf("Please reset the board \n");
+ do_reset(NULL, 0, 0, NULL);
+ }
+
+ trap_c_return:
+ return;
+
+}
+
void dump(struct pt_regs *fp)
{
- printf("PC: %08lx\n", fp->pc);
- printf("SEQSTAT: %08lx SP: %08lx\n", (long) fp->seqstat,
- (long) fp);
- printf("R0: %08lx R1: %08lx R2: %08lx R3: %08lx\n",
- fp->r0, fp->r1, fp->r2, fp->r3);
- printf("R4: %08lx R5: %08lx R6: %08lx R7: %08lx\n",
- fp->r4, fp->r5, fp->r6, fp->r7);
- printf("P0: %08lx P1: %08lx P2: %08lx P3: %08lx\n",
- fp->p0, fp->p1, fp->p2, fp->p3);
- printf("P4: %08lx P5: %08lx FP: %08lx\n", fp->p4, fp->p5,
- fp->fp);
- printf("A0.w: %08lx A0.x: %08lx A1.w: %08lx A1.x: %08lx\n",
- fp->a0w, fp->a0x, fp->a1w, fp->a1x);
- printf("\n");
+ pr_debug("RETE: %08lx RETN: %08lx RETX: %08lx RETS: %08lx\n",
+ fp->rete, fp->retn, fp->retx, fp->rets);
+ pr_debug("IPEND: %04lx SYSCFG: %04lx\n", fp->ipend, fp->syscfg);
+ pr_debug("SEQSTAT: %08lx SP: %08lx\n", (long)fp->seqstat, (long)fp);
+ pr_debug("R0: %08lx R1: %08lx R2: %08lx R3: %08lx\n",
+ fp->r0, fp->r1, fp->r2, fp->r3);
+ pr_debug("R4: %08lx R5: %08lx R6: %08lx R7: %08lx\n",
+ fp->r4, fp->r5, fp->r6, fp->r7);
+ pr_debug("P0: %08lx P1: %08lx P2: %08lx P3: %08lx\n",
+ fp->p0, fp->p1, fp->p2, fp->p3);
+ pr_debug("P4: %08lx P5: %08lx FP: %08lx\n",
+ fp->p4, fp->p5, fp->fp);
+ pr_debug("A0.w: %08lx A0.x: %08lx A1.w: %08lx A1.x: %08lx\n",
+ fp->a0w, fp->a0x, fp->a1w, fp->a1x);
+
+ pr_debug("LB0: %08lx LT0: %08lx LC0: %08lx\n",
+ fp->lb0, fp->lt0, fp->lc0);
+ pr_debug("LB1: %08lx LT1: %08lx LC1: %08lx\n",
+ fp->lb1, fp->lt1, fp->lc1);
+ pr_debug("B0: %08lx L0: %08lx M0: %08lx I0: %08lx\n",
+ fp->b0, fp->l0, fp->m0, fp->i0);
+ pr_debug("B1: %08lx L1: %08lx M1: %08lx I1: %08lx\n",
+ fp->b1, fp->l1, fp->m1, fp->i1);
+ pr_debug("B2: %08lx L2: %08lx M2: %08lx I2: %08lx\n",
+ fp->b2, fp->l2, fp->m2, fp->i2);
+ pr_debug("B3: %08lx L3: %08lx M3: %08lx I3: %08lx\n",
+ fp->b3, fp->l3, fp->m3, fp->i3);
+
+ pr_debug("DCPLB_FAULT_ADDR=%p\n", *pDCPLB_FAULT_ADDR);
+ pr_debug("ICPLB_FAULT_ADDR=%p\n", *pICPLB_FAULT_ADDR);
+
}
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 20:10:49 +0000