| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Common PowerQUICC II code. |
| * |
| * Author: Scott Wood <scottwood@freescale.com> |
| * Copyright (c) 2007 Freescale Semiconductor |
| * |
| * Based on code by Vitaly Bordug <vbordug@ru.mvista.com> |
| * pq2_restart fix by Wade Farnsworth <wfarnsworth@mvista.com> |
| * Copyright (c) 2006 MontaVista Software, Inc. |
| */ |
| |
| #include <linux/kprobes.h> |
| |
| #include <asm/cpm2.h> |
| #include <asm/io.h> |
| #include <asm/pci-bridge.h> |
| |
| #include <platforms/82xx/pq2.h> |
| |
| #define RMR_CSRE 0x00000001 |
| |
| void __noreturn pq2_restart(char *cmd) |
| { |
| local_irq_disable(); |
| setbits32(&cpm2_immr->im_clkrst.car_rmr, RMR_CSRE); |
| |
| /* Clear the ME,EE,IR & DR bits in MSR to cause checkstop */ |
| mtmsr(mfmsr() & ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR)); |
| in_8(&cpm2_immr->im_clkrst.res[0]); |
| |
| panic("Restart failed\n"); |
| } |
| NOKPROBE_SYMBOL(pq2_restart) |
