diff options
Diffstat (limited to 'cpu/mpc8260/traps.c')
| -rw-r--r-- | cpu/mpc8260/traps.c | 42 |
1 files changed, 36 insertions, 6 deletions
diff --git a/cpu/mpc8260/traps.c b/cpu/mpc8260/traps.c index a7f6f7e..deab808 100644 --- a/cpu/mpc8260/traps.c +++ b/cpu/mpc8260/traps.c @@ -35,6 +35,7 @@ #include <common.h> #include <command.h> #include <asm/processor.h> +#include <asm/m8260_pci.h> #if (CONFIG_COMMANDS & CFG_CMD_KGDB) int (*debugger_exception_handler)(struct pt_regs *) = 0; @@ -86,14 +87,12 @@ void show_regs(struct pt_regs * regs) printf("\n"); for (i = 0; i < 32; i++) { - if ((i % 8) == 0) - { + if ((i % 8) == 0) { printf("GPR%02d: ", i); } printf("%08lX ", regs->gpr[i]); - if ((i % 8) == 7) - { + if ((i % 8) == 7) { printf("\n"); } } @@ -108,6 +107,24 @@ _exception(int signr, struct pt_regs *regs) panic("Exception in kernel pc %lx signal %d",regs->nip,signr); } +#ifdef CONFIG_PCI +void dump_pci (void) +{ + + volatile immap_t *immap = (immap_t *) CFG_IMMR; + + printf ("PCI: err status %x err mask %x err ctrl %x\n", + le32_to_cpu (immap->im_pci.pci_esr), + le32_to_cpu (immap->im_pci.pci_emr), + le32_to_cpu (immap->im_pci.pci_ecr)); + printf (" error address %x error data %x ctrl %x\n", + le32_to_cpu (immap->im_pci.pci_eacr), + le32_to_cpu (immap->im_pci.pci_edcr), + le32_to_cpu (immap->im_pci.pci_eccr)); + +} +#endif + void MachineCheckException(struct pt_regs *regs) { @@ -117,6 +134,17 @@ MachineCheckException(struct pt_regs *regs) * when a device is not present. Catch it and return to * the PCI exception handler. */ +#ifdef CONFIG_PCI + volatile immap_t *immap = (immap_t *)CFG_IMMR; +#ifdef DEBUG + dump_pci(); +#endif + /* clear the error in the error status register */ + if(immap->im_pci.pci_esr && cpu_to_le32(PCI_ERROR_PCI_NO_RSP)) { + immap->im_pci.pci_esr = cpu_to_le32(PCI_ERROR_PCI_NO_RSP); + return; + } +#endif if ((fixup = search_exception_table(regs->nip)) != 0) { regs->nip = fixup; return; @@ -130,8 +158,7 @@ MachineCheckException(struct pt_regs *regs) printf("Machine check in kernel mode.\n"); printf("Caused by (from msr): "); printf("regs %p ",regs); - switch( regs->msr & 0x0000F000) - { + switch( regs->msr & 0x0000F000) { case (1<<12) : printf("Machine check signal - probably due to mm fault\n" "with mmu off\n"); @@ -150,6 +177,9 @@ MachineCheckException(struct pt_regs *regs) } show_regs(regs); print_backtrace((unsigned long *)regs->gpr[1]); +#ifdef CONFIG_PCI + dump_pci(); +#endif panic("machine check"); } |