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From: tip-bot for Yazen Ghannam <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: yazen.ghannam@amd.com, mingo@kernel.org, peterz@infradead.org,
	matt@codeblueprint.co.uk, hpa@zytor.com,
	linux-kernel@vger.kernel.org, ard.biesheuvel@linaro.org,
	tglx@linutronix.de, torvalds@linux-foundation.org
Subject: [tip:efi/core] efi: Decode IA32/X64 MS Check structure
Date: Mon, 14 May 2018 00:47:48 -0700	[thread overview]
Message-ID: <tip-a32bc29ed19776ef6827d6336847de9a0b7a8dc5@git.kernel.org> (raw)
In-Reply-To: <20180504060003.19618-10-ard.biesheuvel@linaro.org>

Commit-ID:  a32bc29ed19776ef6827d6336847de9a0b7a8dc5
Gitweb:     https://git.kernel.org/tip/a32bc29ed19776ef6827d6336847de9a0b7a8dc5
Author:     Yazen Ghannam <yazen.ghannam@amd.com>
AuthorDate: Fri, 4 May 2018 07:59:55 +0200
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Mon, 14 May 2018 08:57:48 +0200

efi: Decode IA32/X64 MS Check structure

The IA32/X64 MS Check structure varies from the other Check structures
in the the bit positions of its fields, and it includes an additional
"Error Type" field.

Decode the MS Check structure in a separate function.

Based on UEFI 2.7 Table 257. IA32/X64 MS Check Field Description.

Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180504060003.19618-10-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 drivers/firmware/efi/cper-x86.c | 55 ++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 54 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/efi/cper-x86.c b/drivers/firmware/efi/cper-x86.c
index 5e6716564dba..356b8d326219 100644
--- a/drivers/firmware/efi/cper-x86.c
+++ b/drivers/firmware/efi/cper-x86.c
@@ -57,6 +57,20 @@
 #define CHECK_BUS_TIME_OUT		BIT_ULL(32)
 #define CHECK_BUS_ADDR_SPACE(check)	(((check) & GENMASK_ULL(34, 33)) >> 33)
 
+#define CHECK_VALID_MS_ERR_TYPE		BIT_ULL(0)
+#define CHECK_VALID_MS_PCC		BIT_ULL(1)
+#define CHECK_VALID_MS_UNCORRECTED	BIT_ULL(2)
+#define CHECK_VALID_MS_PRECISE_IP	BIT_ULL(3)
+#define CHECK_VALID_MS_RESTARTABLE_IP	BIT_ULL(4)
+#define CHECK_VALID_MS_OVERFLOW		BIT_ULL(5)
+
+#define CHECK_MS_ERR_TYPE(check)	(((check) & GENMASK_ULL(18, 16)) >> 16)
+#define CHECK_MS_PCC			BIT_ULL(19)
+#define CHECK_MS_UNCORRECTED		BIT_ULL(20)
+#define CHECK_MS_PRECISE_IP		BIT_ULL(21)
+#define CHECK_MS_RESTARTABLE_IP		BIT_ULL(22)
+#define CHECK_MS_OVERFLOW		BIT_ULL(23)
+
 enum err_types {
 	ERR_TYPE_CACHE = 0,
 	ERR_TYPE_TLB,
@@ -111,17 +125,56 @@ static const char * const ia_check_bus_addr_space_strs[] = {
 	"Other Transaction",
 };
 
+static const char * const ia_check_ms_error_type_strs[] = {
+	"No Error",
+	"Unclassified",
+	"Microcode ROM Parity Error",
+	"External Error",
+	"FRC Error",
+	"Internal Unclassified",
+};
+
 static inline void print_bool(char *str, const char *pfx, u64 check, u64 bit)
 {
 	printk("%s%s: %s\n", pfx, str, (check & bit) ? "true" : "false");
 }
 
+static void print_err_info_ms(const char *pfx, u16 validation_bits, u64 check)
+{
+	if (validation_bits & CHECK_VALID_MS_ERR_TYPE) {
+		u8 err_type = CHECK_MS_ERR_TYPE(check);
+
+		printk("%sError Type: %u, %s\n", pfx, err_type,
+		       err_type < ARRAY_SIZE(ia_check_ms_error_type_strs) ?
+		       ia_check_ms_error_type_strs[err_type] : "unknown");
+	}
+
+	if (validation_bits & CHECK_VALID_MS_PCC)
+		print_bool("Processor Context Corrupt", pfx, check, CHECK_MS_PCC);
+
+	if (validation_bits & CHECK_VALID_MS_UNCORRECTED)
+		print_bool("Uncorrected", pfx, check, CHECK_MS_UNCORRECTED);
+
+	if (validation_bits & CHECK_VALID_MS_PRECISE_IP)
+		print_bool("Precise IP", pfx, check, CHECK_MS_PRECISE_IP);
+
+	if (validation_bits & CHECK_VALID_MS_RESTARTABLE_IP)
+		print_bool("Restartable IP", pfx, check, CHECK_MS_RESTARTABLE_IP);
+
+	if (validation_bits & CHECK_VALID_MS_OVERFLOW)
+		print_bool("Overflow", pfx, check, CHECK_MS_OVERFLOW);
+}
+
 static void print_err_info(const char *pfx, u8 err_type, u64 check)
 {
 	u16 validation_bits = CHECK_VALID_BITS(check);
 
+	/*
+	 * The MS Check structure varies a lot from the others, so use a
+	 * separate function for decoding.
+	 */
 	if (err_type == ERR_TYPE_MS)
-		return;
+		return print_err_info_ms(pfx, validation_bits, check);
 
 	if (validation_bits & CHECK_VALID_TRANS_TYPE) {
 		u8 trans_type = CHECK_TRANS_TYPE(check);

  reply	other threads:[~2018-05-14  7:48 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-04  5:59 [GIT PULL 00/17] EFI updates for v4.18 Ard Biesheuvel
2018-05-04  5:59 ` [PATCH 01/17] x86/xen/efi: Initialize UEFI secure boot state during dom0 boot Ard Biesheuvel
2018-05-14  7:43   ` [tip:efi/core] " tip-bot for Daniel Kiper
2018-05-04  5:59 ` [PATCH 02/17] efi/cper: Remove the INDENT_SP silliness Ard Biesheuvel
2018-05-14  7:44   ` [tip:efi/core] " tip-bot for Borislav Petkov
2018-05-04  5:59 ` [PATCH 03/17] efi: Fix IA32/X64 Processor Error Record definition Ard Biesheuvel
2018-05-14  7:44   ` [tip:efi/core] " tip-bot for Yazen Ghannam
2018-05-04  5:59 ` [PATCH 04/17] efi: Decode IA32/X64 Processor Error Section Ard Biesheuvel
2018-05-14  7:45   ` [tip:efi/core] " tip-bot for Yazen Ghannam
2018-05-04  5:59 ` [PATCH 05/17] efi: Decode IA32/X64 Processor Error Info Structure Ard Biesheuvel
2018-05-14  7:45   ` [tip:efi/core] " tip-bot for Yazen Ghannam
2018-05-04  5:59 ` [PATCH 06/17] efi: Decode UEFI-defined IA32/X64 Error Structure GUIDs Ard Biesheuvel
2018-05-14  7:46   ` [tip:efi/core] " tip-bot for Yazen Ghannam
2018-05-04  5:59 ` [PATCH 07/17] efi: Decode IA32/X64 Cache, TLB, and Bus Check structures Ard Biesheuvel
2018-05-14  7:46   ` [tip:efi/core] " tip-bot for Yazen Ghannam
2018-05-04  5:59 ` [PATCH 08/17] efi: Decode additional IA32/X64 Bus Check fields Ard Biesheuvel
2018-05-14  7:47   ` [tip:efi/core] " tip-bot for Yazen Ghannam
2018-05-04  5:59 ` [PATCH 09/17] efi: Decode IA32/X64 MS Check structure Ard Biesheuvel
2018-05-14  7:47   ` tip-bot for Yazen Ghannam [this message]
2018-05-04  5:59 ` [PATCH 10/17] efi: Decode IA32/X64 Context Info structure Ard Biesheuvel
2018-05-14  7:48   ` [tip:efi/core] " tip-bot for Yazen Ghannam
2018-05-04  5:59 ` [PATCH 11/17] efi/libstub/tpm: Make function efi_retrieve_tpm2_eventlog_1_2() static Ard Biesheuvel
2018-05-14  7:48   ` [tip:efi/core] " tip-bot for Wei Yongjun
2018-05-04  5:59 ` [PATCH 12/17] efi: fix efi_pci_io_protocol32 prototype for mixed mode Ard Biesheuvel
2018-05-14  6:57   ` Ingo Molnar
2018-05-14  7:02     ` Ard Biesheuvel
2018-05-14  7:42   ` [tip:efi/core] efi: Avoid potential crashes, fix the 'struct efi_pci_io_protocol_32' definition " tip-bot for Ard Biesheuvel
2018-05-04  5:59 ` [PATCH 13/17] efi: align efi_pci_io_protocol typedefs to type naming convention Ard Biesheuvel
2018-05-14  7:49   ` [tip:efi/core] efi: Align " tip-bot for Ard Biesheuvel
2018-05-04  6:00 ` [PATCH 14/17] efi/x86: fold __setup_efi_pci32 and __setup_efi_pci64 into one Ard Biesheuvel
2018-05-14  7:49   ` [tip:efi/core] efi/x86: Fold __setup_efi_pci32() and __setup_efi_pci64() into one function tip-bot for Ard Biesheuvel
2018-05-04  6:00 ` [PATCH 15/17] efi/x86: Ignore unrealistically large option roms Ard Biesheuvel
2018-05-14  6:40   ` Ingo Molnar
2018-05-14  6:43   ` [PATCH] efi/x86: Clean up the eboot code a bit Ingo Molnar
2018-05-14  6:47     ` Ard Biesheuvel
2018-05-14  6:58       ` Ingo Molnar
2018-05-14  6:59         ` Ard Biesheuvel
2018-05-14  7:50   ` [tip:efi/core] efi/x86: Ignore unrealistically large option ROMs tip-bot for Hans de Goede
2018-05-15  9:18     ` Ard Biesheuvel
2018-06-21 15:13       ` Ingo Molnar
2018-05-04  6:00 ` [PATCH 16/17] efi/capsule-loader: Don't output reset log when reset flags are not set Ard Biesheuvel
2018-05-14  7:50   ` [tip:efi/core] " tip-bot for Shunyong Yang
2018-05-04  6:00 ` [PATCH 17/17] efi/libstub/arm64: handle randomized TEXT_OFFSET Ard Biesheuvel
2018-05-14  6:47   ` Ingo Molnar
2018-05-14  6:48     ` Ard Biesheuvel
2018-05-14  7:00       ` Ingo Molnar
2018-05-14  7:01         ` Ard Biesheuvel

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