1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
5  * Copyright (c) 2004-2006,2008 Kip Macy
73 #include <xen/xen-os.h>
79 #include <contrib/xen/arch-x86/cpuid.h>
80 #include <contrib/xen/arch-x86/hvm/start_info.h>
96 /*--------------------------- Forward Declarations ---------------------------*/
100 /*---------------------------- Extern Declarations ---------------------------*/
107 /*-------------------------------- Global Data -------------------------------*/
119 /*-------------------------------- Xen PV init -------------------------------*/
124 	static int xen = -1;  in isxen()
126 	u_int regs[4];  in isxen()  local
128 	if (xen != -1)  in isxen()
134 	 * this is sufficient to distinguish Xen PVH booting from non-Xen PVH  in isxen()
135 	 * and skip some very early Xen-specific code in the non-Xen case.  in isxen()
139 		do_cpuid(base, regs);  in isxen()
140 		if (regs[1] == XEN_CPUID_SIGNATURE_EBX &&  in isxen()
141 		    regs[2] == XEN_CPUID_SIGNATURE_ECX &&  in isxen()
142 		    regs[3] == XEN_CPUID_SIGNATURE_EDX) {  in isxen()
163 	if (start_info->magic != XEN_HVM_START_MAGIC_VALUE) {  in hammer_time_xen()
165 		    start_info->magic);  in hammer_time_xen()
176 	physfree = MAX(roundup2((vm_paddr_t)_end - KERNBASE, PAGE_SIZE),  in hammer_time_xen()
179 	if (start_info->memmap_paddr != 0)  in hammer_time_xen()
180 		physfree = MAX(roundup2(start_info->memmap_paddr +  in hammer_time_xen()
181 		    start_info->memmap_entries *  in hammer_time_xen()
185 	if (start_info->modlist_paddr != 0) {  in hammer_time_xen()
188 		if (start_info->nr_modules == 0) {  in hammer_time_xen()
193 		    (start_info->modlist_paddr + KERNBASE);  in hammer_time_xen()
194 		for (i = 0; i < start_info->nr_modules; i++)  in hammer_time_xen()
201 	hvm_start_flags = start_info->flags;  in hammer_time_xen()
207 /*-------------------------------- PV specific -------------------------------*/
224 	if (memcmp(ehdr->e_ident, ELFMAG, SELFMAG) ||  in xen_pvh_parse_symtab()
225 	    ehdr->e_ident[EI_CLASS] != ELF_TARG_CLASS ||  in xen_pvh_parse_symtab()
226 	    ehdr->e_version > 1) {  in xen_pvh_parse_symtab()
232 	shdr = (Elf_Shdr *)((uint8_t *)ehdr + ehdr->e_shoff);  in xen_pvh_parse_symtab()
234 	for (i = 1; i < ehdr->e_shnum; i++) {  in xen_pvh_parse_symtab()
263 	if (start_info->modlist_paddr != 0) {  in xen_pvh_parse_preload_data()
268 		    (start_info->modlist_paddr + KERNBASE);  in xen_pvh_parse_preload_data()
277 			if ((header->flags & XENHEADER_HAS_MODULEP_OFFSET) !=  in xen_pvh_parse_preload_data()
284 			    header->modulep_offset + KERNBASE);  in xen_pvh_parse_preload_data()
303 			off = mod[0].paddr + header->modulep_offset - metadata +  in xen_pvh_parse_preload_data()
317 			off = mod[0].paddr + KERNBASE - metadata;  in xen_pvh_parse_preload_data()
339 		if (start_info->cmdline_paddr != 0)  in xen_pvh_parse_preload_data()
341 			    (char *)(start_info->cmdline_paddr + KERNBASE),  in xen_pvh_parse_preload_data()
354 	acpi_set_root(start_info->rsdp_paddr);  in xen_pvh_parse_preload_data()
372 	entries = (struct hvm_memmap_table_entry *)(start_info->memmap_paddr + KERNBASE);  in pvh_parse_memmap_start_info()
373 	nentries = start_info->memmap_entries;  in pvh_parse_memmap_start_info()
427 	if ((start_info->version >= 1) && (start_info->memmap_paddr != 0))  in pvh_parse_memmap()