3  * FDT related Helper functions used by the EFI stub on multiple
19 static void fdt_update_cell_size(void *fdt)  in fdt_update_cell_size()  argument
23 	offset = fdt_path_offset(fdt, "/");  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()
31 			       void *fdt, int new_fdt_size, char *cmdline_ptr)  in update_fdt()  argument
38 	/* Do some checks on provided FDT, if it exists: */  in update_fdt()
45 		 * We don't get the size of the FDT if we get if from a  in update_fdt()
55 		status = fdt_open_into(orig_fdt, fdt, new_fdt_size);  in update_fdt()
57 		status = fdt_create_empty_tree(fdt, new_fdt_size);  in update_fdt()
63 			fdt_update_cell_size(fdt);  in update_fdt()
74 	num_rsv = fdt_num_mem_rsv(fdt);  in update_fdt()
76 		fdt_del_mem_rsv(fdt, num_rsv);  in update_fdt()
78 	node = fdt_subnode_offset(fdt, 0, "chosen");  in update_fdt()
80 		node = fdt_add_subnode(fdt, 0, "chosen");  in update_fdt()
89 		status = fdt_setprop(fdt, node, "bootargs", cmdline_ptr,  in update_fdt()
95 	/* Add FDT entries for EFI runtime services in chosen node. */  in update_fdt()
96 	node = fdt_subnode_offset(fdt, 0, "chosen");  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()
135 	/* Shrink the FDT back to its minimum size: */  in update_fdt()
136 	fdt_pack(fdt);  in update_fdt()
147 static efi_status_t update_fdt_memmap(void *fdt, struct efi_boot_memmap *map)  in update_fdt_memmap()  argument
149 	int node = fdt_path_offset(fdt, "/chosen");  in update_fdt_memmap()
159 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-start", fdt_val64);  in update_fdt_memmap()
165 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-size", fdt_val32);  in update_fdt_memmap()
171 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-desc-size", fdt_val32);  in update_fdt_memmap()
177 	err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-desc-ver", fdt_val32);  in update_fdt_memmap()
213  * Allocate memory for a new FDT, then add EFI and commandline related fields
214  * to the FDT.  This routine increases the FDT allocation size until the
220  * tied to the creation of the FDT with the final memory map in it.
353 		efi_err("Failed to update FDT and exit boot services\n");  in efi_boot_kernel()
366 	void *fdt;  in get_fdt()  local
368 	fdt = get_efi_config_table(DEVICE_TREE_GUID);  in get_fdt()
370 	if (!fdt)  in get_fdt()
373 	if (fdt_check_header(fdt) != 0) {  in get_fdt()
374 		efi_err("Invalid header detected on UEFI supplied FDT, ignoring ...\n");  in get_fdt()
377 	*fdt_size = fdt_totalsize(fdt);  in get_fdt()
378 	return fdt;  in get_fdt()