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hc
2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c 
 kernel/drivers/firmware/efi/cper.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0
12 /*
23  * UEFI Common Platform Error Record (CPER) support
34  *
....@@ -9,19 +10,6 @@
910  *
1011  * For more information about CPER, please refer to Appendix N of UEFI
1112  * Specification version 2.4.
12
- *
13
- * This program is free software; you can redistribute it and/or
14
- * modify it under the terms of the GNU General Public License version
15
- * 2 as published by the Free Software Foundation.
16
- *
17
- * This program is distributed in the hope that it will be useful,
18
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
19
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20
- * GNU General Public License for more details.
21
- *
22
- * You should have received a copy of the GNU General Public License
23
- * along with this program; if not, write to the Free Software
24
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
2513  */
2614 
2715 #include <linux/kernel.h>
....@@ -111,7 +99,7 @@
11199 		if (!len)
112100 			len = snprintf(buf, sizeof(buf), "%s%s", pfx, str);
113101 		else
114
-			len += snprintf(buf+len, sizeof(buf)-len, ", %s", str);
102
+			len += scnprintf(buf+len, sizeof(buf)-len, ", %s", str);
115103 	}
116104 	if (len)
117105 		printk("%s\n", buf);
....@@ -242,10 +230,20 @@
242230 		n += scnprintf(msg + n, len - n, "rank: %d ", mem->rank);
243231 	if (mem->validation_bits & CPER_MEM_VALID_BANK)
244232 		n += scnprintf(msg + n, len - n, "bank: %d ", mem->bank);
233
+	if (mem->validation_bits & CPER_MEM_VALID_BANK_GROUP)
234
+		n += scnprintf(msg + n, len - n, "bank_group: %d ",
235
+			       mem->bank >> CPER_MEM_BANK_GROUP_SHIFT);
236
+	if (mem->validation_bits & CPER_MEM_VALID_BANK_ADDRESS)
237
+		n += scnprintf(msg + n, len - n, "bank_address: %d ",
238
+			       mem->bank & CPER_MEM_BANK_ADDRESS_MASK);
245239 	if (mem->validation_bits & CPER_MEM_VALID_DEVICE)
246240 		n += scnprintf(msg + n, len - n, "device: %d ", mem->device);
247
-	if (mem->validation_bits & CPER_MEM_VALID_ROW)
248
-		n += scnprintf(msg + n, len - n, "row: %d ", mem->row);
241
+	if (mem->validation_bits & (CPER_MEM_VALID_ROW | CPER_MEM_VALID_ROW_EXT)) {
242
+		u32 row = mem->row;
243
+
244
+		row |= cper_get_mem_extension(mem->validation_bits, mem->extended);
245
+		n += scnprintf(msg + n, len - n, "row: %d ", row);
246
+	}
249247 	if (mem->validation_bits & CPER_MEM_VALID_COLUMN)
250248 		n += scnprintf(msg + n, len - n, "column: %d ", mem->column);
251249 	if (mem->validation_bits & CPER_MEM_VALID_BIT_POSITION)
....@@ -260,6 +258,9 @@
260258 	if (mem->validation_bits & CPER_MEM_VALID_TARGET_ID)
261259 		scnprintf(msg + n, len - n, "target_id: 0x%016llx ",
262260 			  mem->target_id);
261
+	if (mem->validation_bits & CPER_MEM_VALID_CHIP_ID)
262
+		scnprintf(msg + n, len - n, "chip_id: %d ",
263
+			  mem->extended >> CPER_MEM_CHIP_ID_SHIFT);
263264 
264265 	msg[n] = '\0';
265266 	return n;
....@@ -300,6 +301,7 @@
300301 	cmem->requestor_id = mem->requestor_id;
301302 	cmem->responder_id = mem->responder_id;
302303 	cmem->target_id = mem->target_id;
304
+	cmem->extended = mem->extended;
303305 	cmem->rank = mem->rank;
304306 	cmem->mem_array_handle = mem->mem_array_handle;
305307 	cmem->mem_dev_handle = mem->mem_dev_handle;
....@@ -417,6 +419,58 @@
417419 	}
418420 }
419421 
422
+static const char * const fw_err_rec_type_strs[] = {
423
+	"IPF SAL Error Record",
424
+	"SOC Firmware Error Record Type1 (Legacy CrashLog Support)",
425
+	"SOC Firmware Error Record Type2",
426
+};
427
+
428
+static void cper_print_fw_err(const char *pfx,
429
+			      struct acpi_hest_generic_data *gdata,
430
+			      const struct cper_sec_fw_err_rec_ref *fw_err)
431
+{
432
+	void *buf = acpi_hest_get_payload(gdata);
433
+	u32 offset, length = gdata->error_data_length;
434
+
435
+	printk("%s""Firmware Error Record Type: %s\n", pfx,
436
+	       fw_err->record_type < ARRAY_SIZE(fw_err_rec_type_strs) ?
437
+	       fw_err_rec_type_strs[fw_err->record_type] : "unknown");
438
+	printk("%s""Revision: %d\n", pfx, fw_err->revision);
439
+
440
+	/* Record Type based on UEFI 2.7 */
441
+	if (fw_err->revision == 0) {
442
+		printk("%s""Record Identifier: %08llx\n", pfx,
443
+		       fw_err->record_identifier);
444
+	} else if (fw_err->revision == 2) {
445
+		printk("%s""Record Identifier: %pUl\n", pfx,
446
+		       &fw_err->record_identifier_guid);
447
+	}
448
+
449
+	/*
450
+	 * The FW error record may contain trailing data beyond the
451
+	 * structure defined by the specification. As the fields
452
+	 * defined (and hence the offset of any trailing data) vary
453
+	 * with the revision, set the offset to account for this
454
+	 * variation.
455
+	 */
456
+	if (fw_err->revision == 0) {
457
+		/* record_identifier_guid not defined */
458
+		offset = offsetof(struct cper_sec_fw_err_rec_ref,
459
+				  record_identifier_guid);
460
+	} else if (fw_err->revision == 1) {
461
+		/* record_identifier not defined */
462
+		offset = offsetof(struct cper_sec_fw_err_rec_ref,
463
+				  record_identifier);
464
+	} else {
465
+		offset = sizeof(*fw_err);
466
+	}
467
+
468
+	buf += offset;
469
+	length -= offset;
470
+
471
+	print_hex_dump(pfx, "", DUMP_PREFIX_OFFSET, 16, 4, buf, length, true);
472
+}
473
+
420474 static void cper_print_tstamp(const char *pfx,
421475 				   struct acpi_hest_generic_data_v300 *gdata)
422476 {
....@@ -504,6 +558,16 @@
504558 		else
505559 			goto err_section_too_small;
506560 #endif
561
+	} else if (guid_equal(sec_type, &CPER_SEC_FW_ERR_REC_REF)) {
562
+		struct cper_sec_fw_err_rec_ref *fw_err = acpi_hest_get_payload(gdata);
563
+
564
+		printk("%ssection_type: Firmware Error Record Reference\n",
565
+		       newpfx);
566
+		/* The minimal FW Error Record contains 16 bytes */
567
+		if (gdata->error_data_length >= SZ_16)
568
+			cper_print_fw_err(newpfx, gdata, fw_err);
569
+		else
570
+			goto err_section_too_small;
507571 	} else {
508572 		const void *err = acpi_hest_get_payload(gdata);
509573