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[PATCH V7 07/10] efi: print unrecognized CPER section

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UEFI spec allows for non-standard section in Common Platform Error
Record. This is defined in section N.2.3 of UEFI version 2.5.

Currently if the CPER section's type (UUID) does not match with
one of the section types that the kernel knows how to parse, the
section is skipped. Therefore, user is not able to see
such CPER data, for instance, error record of non-standard section.

For above mentioned case, this change prints out the raw data in
hex in dmesg buffer. Data length is taken from Error Data length
field of Generic Error Data Entry.

Following is a sample output from dmesg:
[  115.771702] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 2
[  115.779042] {1}[Hardware Error]: It has been corrected by h/w and requires no further action
[  115.787456] {1}[Hardware Error]: event severity: corrected
[  115.792927] {1}[Hardware Error]:  Error 0, type: corrected
[  115.798415] {1}[Hardware Error]:  fru_id: 00000000-0000-0000-0000-000000000000
[  115.805596] {1}[Hardware Error]:  fru_text:
[  115.816105] {1}[Hardware Error]:  section type: d2e2621c-f936-468d-0d84-15a4ed015c8b
[  115.823880] {1}[Hardware Error]:  section length: 88
[  115.828779] {1}[Hardware Error]:   00000000: 01000001 00000002 5f434345 525f4543
[  115.836153] {1}[Hardware Error]:   00000010: 0000574d 00000000 00000000 00000000
[  115.843531] {1}[Hardware Error]:   00000020: 00000000 00000000 00000000 00000000
[  115.850908] {1}[Hardware Error]:   00000030: 00000000 00000000 00000000 00000000
[  115.858288] {1}[Hardware Error]:   00000040: fe800000 00000000 00000004 5f434345
[  115.865665] {1}[Hardware Error]:   00000050: 525f4543 0000574d

Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
Signed-off-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
---
 drivers/firmware/efi/cper.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index c2b0a12..48cb8ee 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -591,8 +591,16 @@ static void cper_estatus_print_section(
 			cper_print_proc_arm(newpfx, arm_err);
 		else
 			goto err_section_too_small;
-	} else
-		printk("%s""section type: unknown, %pUl\n", newpfx, sec_type);
+	} else {
+		const void *unknown_err;
+
+		unknown_err = acpi_hest_generic_data_payload(gdata);
+		printk("%ssection type: %pUl\n", newpfx, sec_type);
+		printk("%ssection length: %d\n", newpfx,
+		       gdata->error_data_length);
+		print_hex_dump(newpfx, "", DUMP_PREFIX_OFFSET, 16, 4,
+			       unknown_err, gdata->error_data_length, 0);
+	}
 
 	return;
 
-- 
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.

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[PATCH V7 00/10] Add UEFI 2.6 and ACPI 6.1 updates for RAS on ARM64 Tyler Baicar <tbaicar@codeaurora.org> - 2017-01-12 19:20 +0100
  [PATCH V7 01/10] acpi: apei: read ack upon ghes record consumption Tyler Baicar <tbaicar@codeaurora.org> - 2017-01-12 19:20 +0100
  [PATCH V7 04/10] arm64: exception: handle Synchronous External Abort Tyler Baicar <tbaicar@codeaurora.org> - 2017-01-12 19:20 +0100
    Re: [PATCH V7 04/10] arm64: exception: handle Synchronous External  Abort Will Deacon <will.deacon@arm.com> - 2017-01-16 13:00 +0100
  [PATCH V7 10/10] arm/arm64: KVM: add guest SEA support Tyler Baicar <tbaicar@codeaurora.org> - 2017-01-12 19:30 +0100
    Re: [PATCH V7 10/10] arm/arm64: KVM: add guest SEA support Marc Zyngier <marc.zyngier@arm.com> - 2017-01-16 13:00 +0100
  [PATCH V7 08/10] ras: acpi / apei: generate trace event for unrecognized CPER section Tyler Baicar <tbaicar@codeaurora.org> - 2017-01-12 19:30 +0100
  [PATCH V7 06/10] acpi: apei: panic OS with fatal error status block Tyler Baicar <tbaicar@codeaurora.org> - 2017-01-12 19:30 +0100
  [PATCH V7 07/10] efi: print unrecognized CPER section Tyler Baicar <tbaicar@codeaurora.org> - 2017-01-12 19:30 +0100
  [PATCH V7 09/10] trace, ras: add ARM processor error trace event Tyler Baicar <tbaicar@codeaurora.org> - 2017-01-12 19:30 +0100
  [PATCH V7 05/10] acpi: apei: handle SEA notification type for ARMv8 Tyler Baicar <tbaicar@codeaurora.org> - 2017-01-12 19:30 +0100

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