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()
117 		printk(KERN_INFO "-- dmmu: %4d entries, %lu way(s)\n",  in print_cpuinfo()
121 		printk(KERN_INFO "-- immu: %4d entries, %lu way(s)\n",  in print_cpuinfo()
125 	printk(KERN_INFO "-- additional features:\n");  in print_cpuinfo()
127 		printk(KERN_INFO "-- debug unit\n");  in print_cpuinfo()
129 		printk(KERN_INFO "-- performance counters\n");  in print_cpuinfo()
131 		printk(KERN_INFO "-- power management\n");  in print_cpuinfo()
133 		printk(KERN_INFO "-- PIC\n");  in print_cpuinfo()
135 		printk(KERN_INFO "-- timer\n");  in print_cpuinfo()
137 		printk(KERN_INFO "-- custom unit(s)\n");  in print_cpuinfo()
148 		panic("Couldn't find CPU%d in device tree...\n", cpu_id);  in setup_cpuinfo()
150 	if (of_property_read_u32(cpu, "clock-frequency",  in setup_cpuinfo()
151 				 &cpuinfo->clock_frequency)) {  in setup_cpuinfo()
153 		       "Device tree missing CPU 'clock-frequency' parameter."  in setup_cpuinfo()
158 	cpuinfo->coreid = mfspr(SPR_COREID);  in setup_cpuinfo()
167  * @fdt: pointer to the start of the device tree in memory or NULL
169  * Handles the pointer to the device tree that this kernel is to use
172  * Falls back on built-in device tree in case null pointer is passed.
181 		pr_info("Compiled-in FDT at %p\n", fdt);  in or1k_early_setup()
205  * from the clock frequency passed in via the device tree
214 	val = of_get_property(cpu, "clock-frequency", NULL);  in calibrate_delay()
216 		panic("no cpu 'clock-frequency' parameter in device tree");  in calibrate_delay()
248 		       (void *)(initrd_start), initrd_end - initrd_start);  in setup_arch()
260 	printk(KERN_INFO "OpenRISC Linux -- http://openrisc.io\n");  in setup_arch()
270 	seq_printf(m, "processor\t\t: %d\n", cpuinfo->coreid);  in show_cpuinfo()
281 			   "OpenRISC 1000 (%d.%d-rev%d)\n",  in show_cpuinfo()
290 		seq_printf(m, "cpu\t\t\t: OpenRISC-%x\n", version);  in show_cpuinfo()
319 	*pos = cpumask_next(*pos - 1, cpu_online_mask);  in c_start()