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()
61 			 * non-critical:  in update_fdt()
71 	 * Delete all memory reserve map entries. When booting via UEFI,  in update_fdt()
72 	 * kernel will use the UEFI memory map to find reserved regions.  in update_fdt()
75 	while (num_rsv-- > 0)  in update_fdt()
99 	status = fdt_setprop_var(fdt, node, "linux,uefi-system-table", fdt_val64);  in update_fdt()
105 	status = fdt_setprop_var(fdt, node, "linux,uefi-mmap-start", fdt_val64);  in update_fdt()
111 	status = fdt_setprop_var(fdt, node, "linux,uefi-mmap-size", fdt_val32);  in update_fdt()
115 	status = fdt_setprop_var(fdt, node, "linux,uefi-mmap-desc-size", fdt_val32);  in update_fdt()
119 	status = fdt_setprop_var(fdt, node, "linux,uefi-mmap-desc-ver", fdt_val32);  in update_fdt()
129 			status = fdt_setprop_var(fdt, node, "kaslr-seed", fdt_val64);  in update_fdt()
141 	if (status == -FDT_ERR_NOSPACE)  in update_fdt()
147 static efi_status_t update_fdt_memmap(void *fdt, struct efi_boot_memmap *map)  in update_fdt_memmap()  argument
157 	fdt_val64 = cpu_to_fdt64((unsigned long)map->map);  in update_fdt_memmap()
159 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-start", fdt_val64);  in update_fdt_memmap()
163 	fdt_val32 = cpu_to_fdt32(map->map_size);  in update_fdt_memmap()
165 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-size", fdt_val32);  in update_fdt_memmap()
169 	fdt_val32 = cpu_to_fdt32(map->desc_size);  in update_fdt_memmap()
171 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-desc-size", fdt_val32);  in update_fdt_memmap()
175 	fdt_val32 = cpu_to_fdt32(map->desc_ver);  in update_fdt_memmap()
177 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-desc-ver", fdt_val32);  in update_fdt_memmap()
191 static efi_status_t exit_boot_func(struct efi_boot_memmap *map, void *priv)  in exit_boot_func()  argument
195 	p->boot_memmap = map;  in exit_boot_func()
198 	 * Update the memory map with virtual addresses. The function will also  in exit_boot_func()
202 	efi_get_virtmap(map->map, map->map_size, map->desc_size,  in exit_boot_func()
203 			p->runtime_map, &p->runtime_entry_count);  in exit_boot_func()
205 	return update_fdt_memmap(p->new_fdt_addr, map);  in exit_boot_func()
213  * Allocate memory for a new FDT, then add EFI and commandline related fields
215  * allocated memory is large enough.  EFI allocations are in EFI_PAGE_SIZE
220  * tied to the creation of the FDT with the final memory map in it.
239 			efi_err("Unable to retrieve UEFI memory map.\n");  in allocate_new_fdt_and_exit_boot()
278 		efi_err("Unable to allocate memory for new device tree.\n");  in allocate_new_fdt_and_exit_boot()
300 		/* Install the new virtual address map */  in allocate_new_fdt_and_exit_boot()
301 		svam = efi_system_table->runtime->set_virtual_address_map;  in allocate_new_fdt_and_exit_boot()
320 			for (l = 0; l < priv.boot_memmap->map_size;  in allocate_new_fdt_and_exit_boot()
321 			     l += priv.boot_memmap->desc_size) {  in allocate_new_fdt_and_exit_boot()
322 				p = (void *)priv.boot_memmap->map + l;  in allocate_new_fdt_and_exit_boot()
324 				if (p->attribute & EFI_MEMORY_RUNTIME)  in allocate_new_fdt_and_exit_boot()
325 					p->virt_addr = U64_MAX;  in allocate_new_fdt_and_exit_boot()