1 // SPDX-License-Identifier: GPL-2.0-or-later
11  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
13  * This file handles the architecture-dependent parts of initialization
71 	 * initialize the boot-time allocator (with low memory only).  in setup_memory()
76 	memblock_reserve(__pa(_stext), _end - _stext);  in setup_memory()
84 		memblock_reserve(__pa(aligned_start), aligned_end - aligned_start);  in setup_memory()
107 	printk(KERN_INFO "CPU: OpenRISC-%x (revision %d) @%d MHz\n",  in print_cpuinfo()
108 	       version, revision, cpuinfo->clock_frequency / 1000000);  in print_cpuinfo()
112 		       "-- no UPR register... unable to detect configuration\n");  in print_cpuinfo()
118 		       "-- dcache: %4d bytes total, %2d bytes/line, %d way(s)\n",  in print_cpuinfo()
119 		       cpuinfo->dcache_size, cpuinfo->dcache_block_size,  in print_cpuinfo()
120 		       cpuinfo->dcache_ways);  in print_cpuinfo()
122 		printk(KERN_INFO "-- dcache disabled\n");  in print_cpuinfo()
125 		       "-- icache: %4d bytes total, %2d bytes/line, %d way(s)\n",  in print_cpuinfo()
126 		       cpuinfo->icache_size, cpuinfo->icache_block_size,  in print_cpuinfo()
127 		       cpuinfo->icache_ways);  in print_cpuinfo()
129 		printk(KERN_INFO "-- icache disabled\n");  in print_cpuinfo()
132 		printk(KERN_INFO "-- dmmu: %4d entries, %lu way(s)\n",  in print_cpuinfo()
136 		printk(KERN_INFO "-- immu: %4d entries, %lu way(s)\n",  in print_cpuinfo()
140 	printk(KERN_INFO "-- additional features:\n");  in print_cpuinfo()
142 		printk(KERN_INFO "-- debug unit\n");  in print_cpuinfo()
144 		printk(KERN_INFO "-- performance counters\n");  in print_cpuinfo()
146 		printk(KERN_INFO "-- power management\n");  in print_cpuinfo()
148 		printk(KERN_INFO "-- PIC\n");  in print_cpuinfo()
150 		printk(KERN_INFO "-- timer\n");  in print_cpuinfo()
152 		printk(KERN_INFO "-- custom unit(s)\n");  in print_cpuinfo()
168 	cpuinfo->icache_ways = 1 << (iccfgr & SPR_ICCFGR_NCW);  in setup_cpuinfo()
170 	cpuinfo->icache_block_size = 16 << ((iccfgr & SPR_ICCFGR_CBS) >> 7);  in setup_cpuinfo()
171 	cpuinfo->icache_size =  in setup_cpuinfo()
172 	    cache_set_size * cpuinfo->icache_ways * cpuinfo->icache_block_size;  in setup_cpuinfo()
175 	cpuinfo->dcache_ways = 1 << (dccfgr & SPR_DCCFGR_NCW);  in setup_cpuinfo()
177 	cpuinfo->dcache_block_size = 16 << ((dccfgr & SPR_DCCFGR_CBS) >> 7);  in setup_cpuinfo()
178 	cpuinfo->dcache_size =  in setup_cpuinfo()
179 	    cache_set_size * cpuinfo->dcache_ways * cpuinfo->dcache_block_size;  in setup_cpuinfo()
181 	if (of_property_read_u32(cpu, "clock-frequency",  in setup_cpuinfo()
182 				 &cpuinfo->clock_frequency)) {  in setup_cpuinfo()
184 		       "Device tree missing CPU 'clock-frequency' parameter."  in setup_cpuinfo()
189 	cpuinfo->coreid = mfspr(SPR_COREID);  in setup_cpuinfo()
203  * Falls back on built-in device tree in case null pointer is passed.
212 		pr_info("Compiled-in FDT at %p\n", fdt);  in or1k_early_setup()
245 	val = of_get_property(cpu, "clock-frequency", NULL);  in calibrate_delay()
247 		panic("no cpu 'clock-frequency' parameter in device tree");  in calibrate_delay()
279 		       (void *)(initrd_start), initrd_end - initrd_start);  in setup_arch()
289 	printk(KERN_INFO "OpenRISC Linux -- http://openrisc.io\n");  in setup_arch()
303 	seq_printf(m, "processor\t\t: %d\n", cpuinfo->coreid);  in show_cpuinfo()
310 			   "OpenRISC 1000 (%d.%d-rev%d)\n",  in show_cpuinfo()
319 		seq_printf(m, "cpu\t\t\t: OpenRISC-%x\n", version);  in show_cpuinfo()
323 	seq_printf(m, "dcache size\t\t: %d bytes\n", cpuinfo->dcache_size);  in show_cpuinfo()
325 		   cpuinfo->dcache_block_size);  in show_cpuinfo()
326 	seq_printf(m, "dcache ways\t\t: %d\n", cpuinfo->dcache_ways);  in show_cpuinfo()
327 	seq_printf(m, "icache size\t\t: %d bytes\n", cpuinfo->icache_size);  in show_cpuinfo()
329 		   cpuinfo->icache_block_size);  in show_cpuinfo()
330 	seq_printf(m, "icache ways\t\t: %d\n", cpuinfo->icache_ways);  in show_cpuinfo()
354 static void *c_start(struct seq_file *m, loff_t *pos)  in c_start()  argument
356 	*pos = cpumask_next(*pos - 1, cpu_online_mask);  in c_start()
357 	if ((*pos) < nr_cpu_ids)  in c_start()
358 		return &cpuinfo_or1k[*pos];  in c_start()
362 static void *c_next(struct seq_file *m, void *v, loff_t *pos)  in c_next()  argument
364 	(*pos)++;  in c_next()
365 	return c_start(m, pos);  in c_next()