5  * Microcode update for Intel PIII and later CPUs
26  * whether the update is applicable or not. We also use the same structure
42 				 struct microcode_update *update)  in microcode_decode_node()  argument
44 	update->data = fdt_getprop(blob, node, "data", &update->size);  in microcode_decode_node()
45 	if (!update->data)  in microcode_decode_node()
47 	update->data += UCODE_HEADER_LEN;  in microcode_decode_node()
48 	update->size -= UCODE_HEADER_LEN;  in microcode_decode_node()
50 	update->header_version = fdtdec_get_int(blob, node,  in microcode_decode_node()
52 	update->update_revision = fdtdec_get_int(blob, node,  in microcode_decode_node()
53 						 "intel,update-revision", 0);  in microcode_decode_node()
54 	update->date_code = fdtdec_get_int(blob, node,  in microcode_decode_node()
56 	update->processor_signature = fdtdec_get_int(blob, node,  in microcode_decode_node()
58 	update->checksum = fdtdec_get_int(blob, node, "intel,checksum", 0);  in microcode_decode_node()
59 	update->loader_revision = fdtdec_get_int(blob, node,  in microcode_decode_node()
61 	update->processor_flags = fdtdec_get_int(blob, node,  in microcode_decode_node()
102 	/* CPUID sets MSR 0x8B iff a microcode update has been loaded. */  in microcode_read_cpu()
124 /* Get a microcode update from the device tree and apply it */
127 	struct microcode_update cpu, update;  in microcode_update_intel()  local
147 		ret = microcode_decode_node(blob, node, &update);  in microcode_update_intel()
159 			debug("%s: Unable to decode update: %d\n", __func__,  in microcode_update_intel()
163 		if (!(update.processor_signature == cpu.processor_signature &&  in microcode_update_intel()
164 		      (update.processor_flags & cpu.processor_flags))) {  in microcode_update_intel()
165 			debug("%s: Skipping non-matching update, sig=%x, pf=%x\n",  in microcode_update_intel()
166 			      __func__, update.processor_signature,  in microcode_update_intel()
167 			      update.processor_flags);  in microcode_update_intel()
171 		wrmsr(MSR_IA32_UCODE_WRITE, (ulong)update.data, 0);  in microcode_update_intel()
174 		      rev, update.date_code & 0xffff,  in microcode_update_intel()
175 		      (update.date_code >> 24) & 0xff,  in microcode_update_intel()
176 		      (update.date_code >> 16) & 0xff);  in microcode_update_intel()
177 		if (update.update_revision != rev) {  in microcode_update_intel()
178 			printf("Microcode update failed\n");  in microcode_update_intel()