1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2005-2017 Andes Technology Corporation
11 #include <asm/proc-fns.h>
14 #include <linux/reboot.h>
20 extern void setup_mm_for_reboot(char mode);
22 extern inline void arch_reset(char mode)  in arch_reset()  argument
24 	if (mode == 's') {  in arch_reset()
46 __setup("reboot=", reboot_setup);
71 	 * Tell the mm system that we are going to reboot -  in machine_restart()
81 	 * Now call the architecture specific reboot code.  in machine_restart()
86 	 * Whoops - the architecture was unable to reboot.  in machine_restart()
90 	pr_info("Reboot failed -- System halted\n");  in machine_restart()
99 	printk("LP is at %pS\n", (void *)regs->lp);  in show_regs()
103 		regs->lp, print_tainted(), regs->sp, regs->fp, regs->gp);  in show_regs()
104 	pr_info("r25: %08lx  r24: %08lx\n", regs->uregs[25], regs->uregs[24]);  in show_regs()
107 		regs->uregs[23], regs->uregs[22],  in show_regs()
108 		regs->uregs[21], regs->uregs[20]);  in show_regs()
110 		regs->uregs[19], regs->uregs[18],  in show_regs()
111 		regs->uregs[17], regs->uregs[16]);  in show_regs()
113 		regs->uregs[15], regs->uregs[14],  in show_regs()
114 		regs->uregs[13], regs->uregs[12]);  in show_regs()
116 		regs->uregs[11], regs->uregs[10],  in show_regs()
117 		regs->uregs[9], regs->uregs[8]);  in show_regs()
119 		regs->uregs[7], regs->uregs[6], regs->uregs[5], regs->uregs[4]);  in show_regs()
121 		regs->uregs[3], regs->uregs[2], regs->uregs[1], regs->uregs[0]);  in show_regs()
157 	memset(&p->thread.cpu_context, 0, sizeof(struct cpu_context));  in copy_thread()
159 	if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {  in copy_thread()
162 		p->thread.cpu_context.r6 = stack_start;  in copy_thread()
164 		p->thread.cpu_context.r7 = stk_sz;  in copy_thread()
168 			childregs->sp = stack_start;  in copy_thread()
170 		childregs->uregs[0] = 0;  in copy_thread()
171 		childregs->osp = 0;  in copy_thread()
173 			childregs->uregs[25] = tls;  in copy_thread()
176 	p->thread.cpu_context.pc = (unsigned long)ret_from_fork;  in copy_thread()
177 	p->thread.cpu_context.sp = (unsigned long)childregs;  in copy_thread()
189 		p->thread.fpu = current->thread.fpu;  in copy_thread()
196 	childregs->lb = 0;  in copy_thread()
197 	childregs->le = 0;  in copy_thread()
198 	childregs->lc = 0;  in copy_thread()
210 	if (!(next->flags & PF_KTHREAD))  in _switch_fpu()
228 		memcpy(fpu, &tsk->thread.fpu, sizeof(*fpu));  in dump_fpu()