diff options
Diffstat (limited to 'arch/powerpc/platforms/8xx/machine_check.c')
-rw-r--r-- | arch/powerpc/platforms/8xx/machine_check.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/8xx/machine_check.c b/arch/powerpc/platforms/8xx/machine_check.c new file mode 100644 index 0000000000..6563659758 --- /dev/null +++ b/arch/powerpc/platforms/8xx/machine_check.c @@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + */ + +#include <linux/kernel.h> +#include <linux/printk.h> +#include <linux/ptrace.h> + +#include <asm/reg.h> + +int machine_check_8xx(struct pt_regs *regs) +{ + unsigned long reason = regs->msr; + + pr_err("Machine check in kernel mode.\n"); + pr_err("Caused by (from SRR1=%lx): ", reason); + if (reason & 0x40000000) + pr_cont("Fetch error at address %lx\n", regs->nip); + else + pr_cont("Data access error at address %lx\n", regs->dar); + +#ifdef CONFIG_PCI + /* the qspan pci read routines can cause machine checks -- Cort + * + * yuck !!! that totally needs to go away ! There are better ways + * to deal with that than having a wart in the mcheck handler. + * -- BenH + */ + bad_page_fault(regs, SIGBUS); + return 1; +#else + return 0; +#endif +} |