1 // SPDX-License-Identifier: GPL-2.0-only
7  * Ubuntu project, hibernation support for mach-dove
50 /* hyp-stub vectors, used to restore el2 during resume from hibernate. */
54  * The logical cpu number we should resume on, initialised to a non-cpu
57 static int sleep_cpu = -EINVAL;
78 	 * re-configure el2.
88 	memcpy(i->uts_version, init_utsname()->version, sizeof(i->uts_version));  in arch_hdr_invariants()
94 	unsigned long nosave_end_pfn = sym_to_pfn(&__nosave_end - 1);  in pfn_is_nosave()
113 		return -EOVERFLOW;  in arch_hibernation_header_save()
115 	arch_hdr_invariants(&hdr->invariants);  in arch_hibernation_header_save()
116 	hdr->ttbr1_el1		= __pa_symbol(swapper_pg_dir);  in arch_hibernation_header_save()
117 	hdr->reenter_kernel	= _cpu_resume;  in arch_hibernation_header_save()
121 		hdr->__hyp_stub_vectors = __pa_symbol(__hyp_stub_vectors);  in arch_hibernation_header_save()
123 		hdr->__hyp_stub_vectors = 0;  in arch_hibernation_header_save()
128 		return -ENODEV;  in arch_hibernation_header_save()
130 	hdr->sleep_cpu_mpidr = cpu_logical_map(sleep_cpu);  in arch_hibernation_header_save()
132 		hdr->sleep_cpu_mpidr);  in arch_hibernation_header_save()
145 	if (memcmp(&hdr->invariants, &invariants, sizeof(invariants))) {  in arch_hibernation_header_restore()
147 		return -EINVAL;  in arch_hibernation_header_restore()
150 	sleep_cpu = get_logical_index(hdr->sleep_cpu_mpidr);  in arch_hibernation_header_restore()
152 		hdr->sleep_cpu_mpidr);  in arch_hibernation_header_restore()
155 		sleep_cpu = -EINVAL;  in arch_hibernation_header_restore()
156 		return -EINVAL;  in arch_hibernation_header_restore()
161 		sleep_cpu = -EINVAL;  in arch_hibernation_header_restore()
202 		return -ENOMEM;  in create_safe_exec_page()
226 		return -ENOMEM;  in save_tags()
267 		for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++) {  in swsusp_mte_save_tags()
341 		return -EBUSY;  in swsusp_arch_suspend()
383 		sleep_cpu = -EINVAL;  in swsusp_arch_suspend()
430 	 * We need a zero page that is zero before & after resume in order  in swsusp_arch_resume()
435 		pr_err("Failed to allocate zero page.\n");  in swsusp_arch_resume()
436 		return -ENOMEM;  in swsusp_arch_resume()
447 	exit_size = __hibernate_exit_text_end - __hibernate_exit_text_start;  in swsusp_arch_resume()
479 		return -ENODEV;  in hibernate_resume_nonboot_cpu_disable()