// SPDX-License-Identifier: GPL-2.0// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. #include <linux/of.h>#include <linux/init.h>#include <linux/seq_file.h>#include <linux/memblock.h> #include <abi/reg_ops.h> static void percpu_print(void *arg){	struct seq_file *m = (struct seq_file *)arg;	unsigned int cur, next, i; 	seq_printf(m, "processor       : %d\n", smp_processor_id());	seq_printf(m, "C-SKY CPU model : %s\n", CSKYCPU_DEF_NAME); 	/* read processor id, max is 100 */	cur  = mfcr("cr13");	for (i = 0; i < 100; i++) {		seq_printf(m, "product info[%d] : 0x%08x\n", i, cur); 		next = mfcr("cr13"); 		/* some CPU only has one id reg */		if (cur == next)			break; 		cur = next; 		/* cpid index is 31-28, reset */		if (!(next >> 28)) {			while ((mfcr("cr13") >> 28) != i);			break;		}	} 	/* CPU feature regs, setup by bootloader or gdbinit */	seq_printf(m, "hint (CPU funcs): 0x%08x\n", mfcr_hint());	seq_printf(m, "ccr  (L1C & MMU): 0x%08x\n", mfcr("cr18"));	seq_printf(m, "ccr2 (L2C)      : 0x%08x\n", mfcr_ccr2());	seq_printf(m, "\n");} static int c_show(struct seq_file *m, void *v){	int cpu; 	for_each_online_cpu(cpu)		smp_call_function_single(cpu, percpu_print, m, true); #ifdef CSKY_ARCH_VERSION	seq_printf(m, "arch-version : %s\n", CSKY_ARCH_VERSION);	seq_printf(m, "\n");#endif 	return 0;} static void *c_start(struct seq_file *m, loff_t *pos){	return *pos < 1 ? (void *)1 : NULL;} static void *c_next(struct seq_file *m, void *v, loff_t *pos){	++*pos;	return NULL;} static void c_stop(struct seq_file *m, void *v) {} const struct seq_operations cpuinfo_op = {	.start	= c_start,	.next	= c_next,	.stop	= c_stop,	.show	= c_show,};