1 // SPDX-License-Identifier: GPL-2.0
24 	/* Set the #address-cells and #size-cells values for an empty tree */  in fdt_update_cell_size()
26 	fdt_setprop_u32(fdt, offset, "#address-cells", EFI_DT_ADDR_CELLS_DEFAULT);  in fdt_update_cell_size()
27 	fdt_setprop_u32(fdt, offset, "#size-cells",    EFI_DT_SIZE_CELLS_DEFAULT);  in fdt_update_cell_size()
62 			 * non-critical:  in update_fdt()
72 	 * Delete all memory reserve map entries. When booting via UEFI,  in update_fdt()
73 	 * kernel will use the UEFI memory map to find reserved regions.  in update_fdt()
76 	while (num_rsv-- > 0)  in update_fdt()
101 		status = fdt_setprop_var(fdt, node, "linux,initrd-start", initrd_image_start);  in update_fdt()
106 		status = fdt_setprop_var(fdt, node, "linux,initrd-end", initrd_image_end);  in update_fdt()
115 	status = fdt_setprop_var(fdt, node, "linux,uefi-system-table", fdt_val64);  in update_fdt()
121 	status = fdt_setprop_var(fdt, node, "linux,uefi-mmap-start", fdt_val64);  in update_fdt()
127 	status = fdt_setprop_var(fdt, node, "linux,uefi-mmap-size", fdt_val32);  in update_fdt()
131 	status = fdt_setprop_var(fdt, node, "linux,uefi-mmap-desc-size", fdt_val32);  in update_fdt()
135 	status = fdt_setprop_var(fdt, node, "linux,uefi-mmap-desc-ver", fdt_val32);  in update_fdt()
145 			status = fdt_setprop_var(fdt, node, "kaslr-seed", fdt_val64);  in update_fdt()
157 	if (status == -FDT_ERR_NOSPACE)  in update_fdt()
163 static efi_status_t update_fdt_memmap(void *fdt, struct efi_boot_memmap *map)  in update_fdt_memmap()  argument
173 	fdt_val64 = cpu_to_fdt64((unsigned long)*map->map);  in update_fdt_memmap()
175 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-start", fdt_val64);  in update_fdt_memmap()
179 	fdt_val32 = cpu_to_fdt32(*map->map_size);  in update_fdt_memmap()
181 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-size", fdt_val32);  in update_fdt_memmap()
185 	fdt_val32 = cpu_to_fdt32(*map->desc_size);  in update_fdt_memmap()
187 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-desc-size", fdt_val32);  in update_fdt_memmap()
191 	fdt_val32 = cpu_to_fdt32(*map->desc_ver);  in update_fdt_memmap()
193 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-desc-ver", fdt_val32);  in update_fdt_memmap()
206 static efi_status_t exit_boot_func(struct efi_boot_memmap *map,  in exit_boot_func()  argument
211 	 * Update the memory map with virtual addresses. The function will also  in exit_boot_func()
215 	efi_get_virtmap(*map->map, *map->map_size, *map->desc_size,  in exit_boot_func()
216 			p->runtime_map, p->runtime_entry_count);  in exit_boot_func()
218 	return update_fdt_memmap(p->new_fdt_addr, map);  in exit_boot_func()
233  * There must be no allocations between the get_memory_map()
236  * with the final memory map in it.
252 	struct efi_boot_memmap map;  in allocate_new_fdt_and_exit_boot()  local
255 	map.map		= &runtime_map;  in allocate_new_fdt_and_exit_boot()
256 	map.map_size	= &map_size;  in allocate_new_fdt_and_exit_boot()
257 	map.desc_size	= &desc_size;  in allocate_new_fdt_and_exit_boot()
258 	map.desc_ver	= &desc_ver;  in allocate_new_fdt_and_exit_boot()
259 	map.key_ptr	= &mmap_key;  in allocate_new_fdt_and_exit_boot()
260 	map.buff_size	= &buff_size;  in allocate_new_fdt_and_exit_boot()
263 	 * Get a copy of the current memory map that we will use to prepare  in allocate_new_fdt_and_exit_boot()
268 	status = efi_get_memory_map(&map);  in allocate_new_fdt_and_exit_boot()
270 		efi_err("Unable to retrieve UEFI memory map.\n");  in allocate_new_fdt_and_exit_boot()
276 	map.map = &memory_map;  in allocate_new_fdt_and_exit_boot()
285 	 * we can get the memory map key needed for exit_boot_services().  in allocate_new_fdt_and_exit_boot()
287 	status = efi_get_memory_map(&map);  in allocate_new_fdt_and_exit_boot()
305 	status = efi_exit_boot_services(handle, &map, &priv, exit_boot_func);  in allocate_new_fdt_and_exit_boot()
313 		/* Install the new virtual address map */  in allocate_new_fdt_and_exit_boot()
314 		svam = efi_system_table->runtime->set_virtual_address_map;  in allocate_new_fdt_and_exit_boot()
319 		 * We are beyond the point of no return here, so if the call to  in allocate_new_fdt_and_exit_boot()
329 			 * the incoming kernel that no virtual translation has  in allocate_new_fdt_and_exit_boot()
335 				if (p->attribute & EFI_MEMORY_RUNTIME)  in allocate_new_fdt_and_exit_boot()
336 					p->virt_addr = 0;  in allocate_new_fdt_and_exit_boot()
348 	efi_system_table->boottime->free_pool(runtime_map);  in allocate_new_fdt_and_exit_boot()