| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20141209095843.GA3990@pd.tnic>
Date: Tue, 9 Dec 2014 10:58:43 +0100
From: Borislav Petkov <bp@...en8.de>
To: linux-efi <linux-efi@...r.kernel.org>
Cc: Laszlo Ersek <lersek@...hat.com>,
Ard Biesheuvel <ard.biesheuvel@...aro.org>,
Matt Fleming <matt.fleming@...el.com>,
Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>,
lkml <linux-kernel@...r.kernel.org>
Subject: Shorten efi regions output
Hi guys,
so this decoded EFI regions output is nice but can we shorten it? It
sticks too far out in the terminal more than anything else in dmesg and
staring at it needs me to resize window and such. It probably is an even
bigger problem if one's monitor hasn't switched to higher res early
during boot.
So here's what I'm seeing with the latest EDKII:
[ 0.000000] efi: EFI v2.40 by EDK II
[ 0.000000] efi: ACPI=0x7ff2d000 ACPI 2.0=0x7ff2d014
[ 0.000000] efi: mem00: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000000000000-0x0000000000001000) (0MB)
[ 0.000000] efi: mem01: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x0000000000001000-0x0000000000002000) (0MB)
[ 0.000000] efi: mem02: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000000002000-0x000000000009f000) (0MB)
[ 0.000000] efi: mem03: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x000000000009f000-0x00000000000a0000) (0MB)
[ 0.000000] efi: mem04: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000000100000-0x0000000000820000) (7MB)
[ 0.000000] efi: mem05: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x0000000000820000-0x0000000001000000) (7MB)
[ 0.000000] efi: mem06: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x0000000001000000-0x0000000003cbc000) (44MB)
[ 0.000000] efi: mem07: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000003cbc000-0x0000000004000000) (3MB)
[ 0.000000] efi: mem08: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x0000000004000000-0x0000000005cbc000) (28MB)
[ 0.000000] efi: mem09: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000005cbc000-0x000000003fffc000) (931MB)
[ 0.000000] efi: mem10: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x000000003fffc000-0x0000000040000000) (0MB)
[ 0.000000] efi: mem11: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000040000000-0x000000007c000000) (960MB)
[ 0.000000] efi: mem12: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x000000007c000000-0x000000007c020000) (0MB)
[ 0.000000] efi: mem13: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x000000007c020000-0x000000007ebc5000) (43MB)
[ 0.000000] efi: mem14: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x000000007ebc5000-0x000000007ebfe000) (0MB)
[ 0.000000] efi: mem15: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x000000007ebfe000-0x000000007ebff000) (0MB)
[ 0.000000] efi: mem16: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x000000007ebff000-0x000000007ec03000) (0MB)
[ 0.000000] efi: mem17: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x000000007ec03000-0x000000007ec05000) (0MB)
[ 0.000000] efi: mem18: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x000000007ec05000-0x000000007ec06000) (0MB)
[ 0.000000] efi: mem19: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x000000007ec06000-0x000000007ec07000) (0MB)
[ 0.000000] efi: mem20: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x000000007ec07000-0x000000007ec08000) (0MB)
[ 0.000000] efi: mem21: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x000000007ec08000-0x000000007ece7000) (0MB)
[ 0.000000] efi: mem22: [Boot Code | | | | | |WB|WT|WC|UC] range=[0x000000007ece7000-0x000000007ee3b000) (1MB)
[ 0.000000] efi: mem23: [Runtime Data |RUN| | | | |WB|WT|WC|UC] range=[0x000000007ee3b000-0x000000007ee4e000) (0MB)
[ 0.000000] efi: mem24: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x000000007ee4e000-0x000000007fd4e000) (15MB)
[ 0.000000] efi: mem25: [Boot Code | | | | | |WB|WT|WC|UC] range=[0x000000007fd4e000-0x000000007fece000) (1MB)
[ 0.000000] efi: mem26: [Runtime Code |RUN| | | | |WB|WT|WC|UC] range=[0x000000007fece000-0x000000007fefe000) (0MB)
[ 0.000000] efi: mem27: [Runtime Data |RUN| | | | |WB|WT|WC|UC] range=[0x000000007fefe000-0x000000007ff22000) (0MB)
[ 0.000000] efi: mem28: [Reserved | | | | | |WB|WT|WC|UC] range=[0x000000007ff22000-0x000000007ff26000) (0MB)
[ 0.000000] efi: mem29: [ACPI Reclaim Memory| | | | | |WB|WT|WC|UC] range=[0x000000007ff26000-0x000000007ff2e000) (0MB)
[ 0.000000] efi: mem30: [ACPI Memory NVS | | | | | |WB|WT|WC|UC] range=[0x000000007ff2e000-0x000000007ff32000) (0MB)
[ 0.000000] efi: mem31: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x000000007ff32000-0x000000007ffd0000) (0MB)
[ 0.000000] efi: mem32: [Runtime Data |RUN| | | | |WB|WT|WC|UC] range=[0x000000007ffd0000-0x0000000080000000) (0MB)
[ 0.000000] efi: mem33: [Runtime Data |RUN| | | | | | | |UC] range=[0x00000000fff00000-0x0000000100000000) (1MB)
and here's with the proposed changes:
* regions get printed first so that vertical alignment gets preserved
* memory types come then, with shorter names but still readable (I hope :))
* efi mem attributes which are not set do not print the empty string.
The vertical bar after "UC" is missing on purpose although this is not
that totally correct if the region we're printing doesn't have the UC
bit set. Then it would issue "|]" at the end but who cares - I'd like to
not complicate this function unnecessarily.
This way the output fits much better in dmesg and we shorten it by 30ish
columns while preserving it. Diff below.
[ 0.000000] efi: EFI v2.40 by EDK II
[ 0.000000] efi: ACPI=0x7ff2d000 ACPI 2.0=0x7ff2d014
[ 0.000000] efi: mem00: [0x0000000000000000-0x0000000000001000) [Mem |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem01: [0x0000000000001000-0x0000000000002000) [LdrData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem02: [0x0000000000002000-0x000000000009f000) [Mem |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem03: [0x000000000009f000-0x00000000000a0000) [LdrData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem04: [0x0000000000100000-0x0000000000820000) [Mem |WB|WT|WC|UC] (7MB)
[ 0.000000] efi: mem05: [0x0000000000820000-0x0000000001000000) [BootData |WB|WT|WC|UC] (7MB)
[ 0.000000] efi: mem06: [0x0000000001000000-0x0000000003cbc000) [LdrData |WB|WT|WC|UC] (44MB)
[ 0.000000] efi: mem07: [0x0000000003cbc000-0x0000000004000000) [Mem |WB|WT|WC|UC] (3MB)
[ 0.000000] efi: mem08: [0x0000000004000000-0x0000000005cbc000) [LdrData |WB|WT|WC|UC] (28MB)
[ 0.000000] efi: mem09: [0x0000000005cbc000-0x000000003fffc000) [Mem |WB|WT|WC|UC] (931MB)
[ 0.000000] efi: mem10: [0x000000003fffc000-0x0000000040000000) [LdrData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem11: [0x0000000040000000-0x000000007c000000) [Mem |WB|WT|WC|UC] (960MB)
[ 0.000000] efi: mem12: [0x000000007c000000-0x000000007c020000) [BootData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem13: [0x000000007c020000-0x000000007ebc5000) [Mem |WB|WT|WC|UC] (43MB)
[ 0.000000] efi: mem14: [0x000000007ebc5000-0x000000007ebfe000) [LdrData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem15: [0x000000007ebfe000-0x000000007ebff000) [BootData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem16: [0x000000007ebff000-0x000000007ec03000) [Mem |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem17: [0x000000007ec03000-0x000000007ec05000) [BootData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem18: [0x000000007ec05000-0x000000007ec06000) [LdrData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem19: [0x000000007ec06000-0x000000007ec07000) [BootData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem20: [0x000000007ec07000-0x000000007ec08000) [LdrData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem21: [0x000000007ec08000-0x000000007ece7000) [BootData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem22: [0x000000007ece7000-0x000000007ee3b000) [BootCode |WB|WT|WC|UC] (1MB)
[ 0.000000] efi: mem23: [0x000000007ee3b000-0x000000007ee4e000) [RtData |RT|WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem24: [0x000000007ee4e000-0x000000007fd4e000) [BootData |WB|WT|WC|UC] (15MB)
[ 0.000000] efi: mem25: [0x000000007fd4e000-0x000000007fece000) [BootCode |WB|WT|WC|UC] (1MB)
[ 0.000000] efi: mem26: [0x000000007fece000-0x000000007fefe000) [RtCode |RT|WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem27: [0x000000007fefe000-0x000000007ff22000) [RtData |RT|WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem28: [0x000000007ff22000-0x000000007ff26000) [Reserved |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem29: [0x000000007ff26000-0x000000007ff2e000) [ACPIRclMem |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem30: [0x000000007ff2e000-0x000000007ff32000) [ACPIMemNVS |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem31: [0x000000007ff32000-0x000000007ffd0000) [BootData |WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem32: [0x000000007ffd0000-0x0000000080000000) [RtData |RT|WB|WT|WC|UC] (0MB)
[ 0.000000] efi: mem33: [0x00000000fff00000-0x0000000100000000) [RtData |RT|UC] (1MB)
---
arch/x86/platform/efi/efi.c | 5 +++--
drivers/firmware/efi/efi.c | 52 ++++++++++++++++++++++-----------------------
2 files changed, 29 insertions(+), 28 deletions(-)
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 6a1ffd777db0..4b76256dcb31 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -203,10 +203,11 @@ static void __init print_efi_memmap(void)
char buf[64];
md = p;
- pr_info("mem%02u: %s range=[0x%016llx-0x%016llx) (%lluMB)\n",
- i, efi_md_typeattr_format(buf, sizeof(buf), md),
+ pr_info("mem%02u: [0x%016llx-0x%016llx) %s (%lluMB)\n",
+ i,
md->phys_addr,
md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT),
+ efi_md_typeattr_format(buf, sizeof(buf), md),
(md->num_pages >> (20 - EFI_PAGE_SHIFT)));
}
#endif /* EFI_DEBUG */
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 8590099ac148..6734072980ee 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -446,21 +446,23 @@ int __init efi_get_fdt_params(struct efi_fdt_params *params, int verbose)
}
#endif /* CONFIG_EFI_PARAMS_FROM_FDT */
+/* Update this if you're adding a longer string */
+#define MEM_TYPE_MAXLEN 11
static __initdata char memory_type_name[][20] = {
"Reserved",
- "Loader Code",
- "Loader Data",
- "Boot Code",
- "Boot Data",
- "Runtime Code",
- "Runtime Data",
- "Conventional Memory",
- "Unusable Memory",
- "ACPI Reclaim Memory",
- "ACPI Memory NVS",
- "Memory Mapped I/O",
- "MMIO Port Space",
- "PAL Code"
+ "LdrCode",
+ "LdrData",
+ "BootCode",
+ "BootData",
+ "RtCode",
+ "RtData",
+ "Mem",
+ "UnusableMem",
+ "ACPIRclMem",
+ "ACPIMemNVS",
+ "MMappedI/O",
+ "MMIOPortSpc",
+ "PALCode"
};
char * __init efi_md_typeattr_format(char *buf, size_t size,
@@ -474,9 +476,7 @@ char * __init efi_md_typeattr_format(char *buf, size_t size,
if (md->type >= ARRAY_SIZE(memory_type_name))
type_len = snprintf(pos, size, "[type=%u", md->type);
else
- type_len = snprintf(pos, size, "[%-*s",
- (int)(sizeof(memory_type_name[0]) - 1),
- memory_type_name[md->type]);
+ type_len = snprintf(pos, size, "[%-*s", MEM_TYPE_MAXLEN, memory_type_name[md->type]);
if (type_len >= size)
return buf;
@@ -490,15 +490,15 @@ char * __init efi_md_typeattr_format(char *buf, size_t size,
snprintf(pos, size, "|attr=0x%016llx]",
(unsigned long long)attr);
else
- snprintf(pos, size, "|%3s|%2s|%2s|%2s|%3s|%2s|%2s|%2s|%2s]",
- attr & EFI_MEMORY_RUNTIME ? "RUN" : "",
- attr & EFI_MEMORY_XP ? "XP" : "",
- attr & EFI_MEMORY_RP ? "RP" : "",
- attr & EFI_MEMORY_WP ? "WP" : "",
- attr & EFI_MEMORY_UCE ? "UCE" : "",
- attr & EFI_MEMORY_WB ? "WB" : "",
- attr & EFI_MEMORY_WT ? "WT" : "",
- attr & EFI_MEMORY_WC ? "WC" : "",
- attr & EFI_MEMORY_UC ? "UC" : "");
+ snprintf(pos, size, "|%s%s%s%s%s%s%s%s%s]",
+ attr & EFI_MEMORY_RUNTIME ? "RT|" : "",
+ attr & EFI_MEMORY_XP ? "XP|" : "",
+ attr & EFI_MEMORY_RP ? "RP|" : "",
+ attr & EFI_MEMORY_WP ? "WP|" : "",
+ attr & EFI_MEMORY_UCE ? "UCE|" : "",
+ attr & EFI_MEMORY_WB ? "WB|" : "",
+ attr & EFI_MEMORY_WT ? "WT|" : "",
+ attr & EFI_MEMORY_WC ? "WC|" : "",
+ attr & EFI_MEMORY_UC ? "UC" : "");
return buf;
}
--
2.0.0
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists