diff options
Diffstat (limited to 'arch/powerpc/platforms/82xx/pq2.c')
| -rw-r--r-- | arch/powerpc/platforms/82xx/pq2.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/82xx/pq2.c b/arch/powerpc/platforms/82xx/pq2.c new file mode 100644 index 000000000..391d72a2e --- /dev/null +++ b/arch/powerpc/platforms/82xx/pq2.c @@ -0,0 +1,34 @@ +// 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) |