1 // SPDX-License-Identifier: GPL-2.0
25 #include <linux/console.h>
61 #include <asm/console.h>
86  * Using SRM callbacks for initial console output. This works from
92  * console device is "registered" during console_init(). 
95  * the console drivers. That's the last possible time srmcons can be 
96  * unregistered without interfering with console behavior.
99  * "console=srm". The meaning of these two args is:
100  *     "srmcons"     - early callback prints 
101  *     "console=srm" - full callback based console, including early prints
105 /* Enforce a memory size limit; useful for testing. By default, none. */
108 /* Set AGP GART window size (0 means disabled). */
136  * i386-setup code. This is just enough to make the console
227 		{ .name = "rtc", .start = -1, .end = -1 },  in reserve_std_resources()
242 		for (hose = hose_head; hose; hose = hose->next)  in reserve_std_resources()
243 			if (hose->index == 0) {  in reserve_std_resources()
244 				io = hose->io_space;  in reserve_std_resources()
259 	for ((_cluster) = (memdesc)->cluster, (i) = 0;		\
260 	     (i) < (memdesc)->numclusters; (i)++, (_cluster)++)
287 	unsigned long size;  in move_initrd()  local
289 	size = initrd_end - initrd_start;  in move_initrd()
290 	start = memblock_alloc(PAGE_ALIGN(size), PAGE_SIZE);  in move_initrd()
291 	if (!start || __pa(start) + size > mem_limit) {  in move_initrd()
295 	memmove(start, (void *)initrd_start, size);  in move_initrd()
297 	initrd_end = initrd_start + size;  in move_initrd()
313 	  (hwrpb->mddt_offset + (unsigned long) hwrpb);  in setup_memory()
319 		       i, cluster->usage, cluster->start_pfn,  in setup_memory()
320 		       cluster->start_pfn + cluster->numpages);  in setup_memory()
322 		end = cluster->start_pfn + cluster->numpages;  in setup_memory()
326 		memblock_add(PFN_PHYS(cluster->start_pfn),  in setup_memory()
327 			     cluster->numpages << PAGE_SHIFT);  in setup_memory()
329 		/* Bit 0 is console/PALcode reserved.  Bit 1 is  in setup_memory()
330 		   non-volatile memory -- we might want to mark  in setup_memory()
332 		if (cluster->usage & 3)  in setup_memory()
333 			memblock_reserve(PFN_PHYS(cluster->start_pfn),  in setup_memory()
334 				         cluster->numpages << PAGE_SHIFT);  in setup_memory()
357 		printk("setup: forcing memory size to %ldK (from %ldK).\n",  in setup_memory()
358 		       mem_size_limit << (PAGE_SHIFT - 10),  in setup_memory()
359 		       max_low_pfn    << (PAGE_SHIFT - 10));  in setup_memory()
364 	kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS;  in setup_memory()
396 		(hwrpb->mddt_offset + (unsigned long) hwrpb);  in page_is_ram()
399 		if (pfn >= cluster->start_pfn  &&  in page_is_ram()
400 		    pfn < cluster->start_pfn + cluster->numpages) {  in page_is_ram()
401 			return (cluster->usage & 3) ? 0 : 1;  in page_is_ram()
416 			return -ENOMEM;  in register_cpus()
449 	hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);  in setup_arch()
453 	 * Pre-process the system type to make sure it will be valid.  in setup_arch()
462         if ((long)hwrpb->sys_type < 0) {  in setup_arch()
463 		hwrpb->sys_type = -((long)hwrpb->sys_type);  in setup_arch()
474 	alpha_using_srm = !str_has_prefix((const char *)hwrpb->ssn, "MILO");  in setup_arch()
478 	alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0;  in setup_arch()
502 	 * Process command-line arguments.  in setup_arch()
522 		if (strncmp(p, "console=srm", 11) == 0) {  in setup_arch()
542 	/* If we want SRM console printk echoing early, do it now. */  in setup_arch()
547 		 * If "console=srm" was specified, clear the srmcons_output  in setup_arch()
555 	/* If we're using SRM, make sysrq-b halt back to the prom,  in setup_arch()
556 	   not auto-reboot.  */  in setup_arch()
566 	cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);  in setup_arch()
568 	get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,  in setup_arch()
569 		     cpu->type, &type_name, &var_name);  in setup_arch()
574 		vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,  in setup_arch()
575 				 cpu->type);  in setup_arch()
581 		      hwrpb->sys_type, hwrpb->sys_variation);  in setup_arch()
639 	determine_cpu_caches(cpu->type);  in setup_arch()
650 	 * Give us a default console.  TGA users will see nothing until  in setup_arch()
674  	if (hwrpb->max_asn != MAX_ASN) {  in setup_arch()
675 		printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);  in setup_arch()
752 		NULL,		/* Sable -- see below.  */  in get_sysvec()
760 		NULL,		/* Mikasa -- see below.  */  in get_sysvec()
762 		NULL,		/* EB66 -- see variation.  */  in get_sysvec()
763 		NULL,		/* EB64+ -- see variation.  */  in get_sysvec()
769 		NULL,		/* EB164 -- see variation.  */  in get_sysvec()
770 		NULL,		/* Noritake -- see below.  */  in get_sysvec()
777 		NULL,		/* Tsunami -- see variation.  */  in get_sysvec()
859 		   (type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) {  in get_sysvec()
860 		vec = api_vecs[type - ST_API_BIAS];  in get_sysvec()
862 		   (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) {  in get_sysvec()
863 		vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];  in get_sysvec()
869 		/* Member ID is a bit-field. */  in get_sysvec()
979 		if (strcasecmp(mv->vector_name, name) == 0)  in get_sysvec_byname()
996 		   (type - ST_API_BIAS) < ARRAY_SIZE(api_names)) {  in get_sysnames()
997 		*type_name = api_names[type - ST_API_BIAS];  in get_sysnames()
999 		   (type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) {  in get_sysnames()
1000 		*type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];  in get_sysnames()
1013 	member = (variation >> 10) & 0x3f; /* member ID is a bit-field */  in get_sysnames()
1064  * was not implemented in the console firmware.  If it's revision 5 or
1068  * the string--a pointer to the name of the platform.
1071  *      - Pointer to a ASCII string if it's in the HWRPB
1072  *      - Pointer to a blank string if the data is not in the HWRPB.
1081 	/* Go to the console for the string pointer.  in platform_string()
1085 	if (hwrpb->revision < 5)  in platform_string()
1093 			((char *)hwrpb + hwrpb->dsr_offset));  in platform_string()
1094 		return ((char *)dsr + (dsr->sysname_off +  in platform_string()
1108 			((char *)cpubase + i*hwrpb->processor_size);  in get_nr_processors()
1109 		if ((cpu->flags & 0x1cc) == 0x1cc)  in get_nr_processors()
1118 	if (shape == -1)  in show_cache_size()
1123 		seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",  in show_cache_size()
1149 	cpu_index = (unsigned) (cpu->type - 1);  in show_cpuinfo()
1154 	get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,  in show_cpuinfo()
1155 		     cpu->type, &systype_name, &sysvariation_name);  in show_cpuinfo()
1157 	nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);  in show_cpuinfo()
1160 	timer_freq = (100UL * hwrpb->intr_freq) / 4096;  in show_cpuinfo()
1176 		      "page size [bytes]\t: %ld\n"  in show_cpuinfo()
1184 		       cpu_name, cpu->variation, cpu->revision,  in show_cpuinfo()
1185 		       (char*)cpu->serial_no,  in show_cpuinfo()
1186 		       systype_name, sysvariation_name, hwrpb->sys_revision,  in show_cpuinfo()
1187 		       (char*)hwrpb->ssn,  in show_cpuinfo()
1188 		       est_cycle_freq ? : hwrpb->cycle_freq,  in show_cpuinfo()
1191 		       hwrpb->pagesize,  in show_cpuinfo()
1192 		       hwrpb->pa_bits,  in show_cpuinfo()
1193 		       hwrpb->max_asn,  in show_cpuinfo()
1215 read_mem_block(int *addr, int stride, int size)  in read_mem_block()  argument
1217 	long nloads = size / stride, cnt, tmp;  in read_mem_block()
1235 	return cnt / (size / stride);  in read_mem_block()
1251 	long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;  in external_cache_probe()  local
1257 	read_mem_block(__va(0), stride, size);  in external_cache_probe()
1259 	while (size < maxsize) {  in external_cache_probe()
1261 		cycles = read_mem_block(__va(0), stride, size);  in external_cache_probe()
1266 			       size >> 11, prev_cycles, cycles);  in external_cache_probe()
1267 			return CSHAPE(size >> 1, width, 1);  in external_cache_probe()
1270 		read_mem_block(__va(size), stride, size);  in external_cache_probe()
1272 		size <<= 1;  in external_cache_probe()
1274 	return -1;	/* No BCACHE found. */  in external_cache_probe()
1291 		L3 = -1;  in determine_cpu_caches()
1293 		/* BIU_CTL is a write-only Abox register.  PALcode has a  in determine_cpu_caches()
1297 			unsigned long biu_ctl, size;  in determine_cpu_caches()
1298 			size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));  in determine_cpu_caches()
1299 			L2 = CSHAPE (size, 5, 1);  in determine_cpu_caches()
1309 		unsigned long car, size;  in determine_cpu_caches()  local
1312 		L3 = -1;  in determine_cpu_caches()
1315 		size = 64*1024 * (1 << ((car >> 5) & 7));  in determine_cpu_caches()
1316 		/* No typo -- 8 byte cacheline size.  Whodathunk.  */  in determine_cpu_caches()
1317 		L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);  in determine_cpu_caches()
1328 		/* Check the line size of the Scache.  */  in determine_cpu_caches()
1333 		/* BC_CONTROL and BC_CONFIG are write-only IPRs.  PALcode  in determine_cpu_caches()
1337 			unsigned long bc_control, bc_config, size;  in determine_cpu_caches()
1338 			size = 1024*1024 * (1 << ((bc_config & 7) - 1));  in determine_cpu_caches()
1339 			L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);  in determine_cpu_caches()
1357 		L3 = -1;  in determine_cpu_caches()
1360 		unsigned long cbox_config, size;  in determine_cpu_caches()
1363 		size = 512*1024 * (1 << ((cbox_config >> 12) & 3));  in determine_cpu_caches()
1365 		L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);  in determine_cpu_caches()
1380 		L3 = -1;  in determine_cpu_caches()
1387 		L3 = -1;  in determine_cpu_caches()
1408 	return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;  in c_start()
1436 	/* If we are using SRM and serial console, just hard halt here. */  in alpha_panic_event()
1448 	pd = platform_device_alloc("pcspkr", -1);  in add_pcspkr()
1450 		return -ENOMEM;  in add_pcspkr()