1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Common PowerQUICC II code. |
4 | * |
5 | * Author: Scott Wood <scottwood@freescale.com> |
6 | * Copyright (c) 2007 Freescale Semiconductor |
7 | * |
8 | * Based on code by Vitaly Bordug <vbordug@ru.mvista.com> |
9 | * pq2_restart fix by Wade Farnsworth <wfarnsworth@mvista.com> |
10 | * Copyright (c) 2006 MontaVista Software, Inc. |
11 | */ |
12 | |
13 | #include <linux/kprobes.h> |
14 | |
15 | #include <asm/cpm2.h> |
16 | #include <asm/io.h> |
17 | #include <asm/pci-bridge.h> |
18 | |
19 | #include <platforms/82xx/pq2.h> |
20 | |
21 | #define RMR_CSRE 0x00000001 |
22 | |
23 | void __noreturn pq2_restart(char *cmd) |
24 | { |
25 | local_irq_disable(); |
26 | setbits32(&cpm2_immr->im_clkrst.car_rmr, RMR_CSRE); |
27 | |
28 | /* Clear the ME,EE,IR & DR bits in MSR to cause checkstop */ |
29 | mtmsr(mfmsr() & ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR)); |
30 | in_8(&cpm2_immr->im_clkrst.res[0]); |
31 | |
32 | panic(fmt: "Restart failed\n" ); |
33 | } |
34 | NOKPROBE_SYMBOL(pq2_restart) |
35 | |