Trying to makes sense of some of the entries in dmesg can be
difficult unless you are well versed in dealing with hex numbers.
I created a script that parses the dmesg command (or a file) and
retrieves any line that contains an address range. It then reformats
the output into 4 columns:
Columns 1 and 2 are the start and end addresses converted to decimal.
Column 3 is the size of that address range in decimal.
Column 4 is the line from dmesg spanning multiple lines in column 4 if needed.
Executing the script by itself will cause it to run dmesg for its input.
Executing the script with a file will cause it to scan the file.
This is the help message:
tc@E310:~/Scripting/AddressParser$ ./AddressParser.sh -h
Version 0.1 Dec 30, 2024
This script scans dmesg or a file (optional) for hex address ranges.
Usage: AddressParser.sh [ -n ] [ File ]
-n Do not format column 4 to stay within column 4.
Sample result:
Start End Size Dmesg
0.00B 637.99K 638.00K BIOS-e820: [mem 0x0000000000000000-0x000000000
009f7ff] usable
638.00K 639.99K 2048.00B BIOS-e820: [mem 0x000000000009f800-0x000000000
009ffff] reserved
256.00B 943.00B 688.00B pcmcia_socket pcmcia_socket0: cs: IO port prob
e 0x100-0x3af:
368.00B 375.00B 8.00B excluding 0x170-0x177 0x1f0-0x1f7 0x370-0x377
496.00B 503.00B 8.00B excluding 0x170-0x177 0x1f0-0x1f7 0x370-0x377
880.00B 887.00B 8.00B excluding 0x170-0x177 0x1f0-0x1f7 0x370-0x377
Columns 1 and 2 are the decimal equivalents for hex addresses.
Column 3 is the size of the address window.
Column 4 is the scanned lines. It wraps within the column if too long.
Lines containing multiple address ranges are listed multiple times.
The script reads the width of the terminal or console and formats the output
to fill the width.
Here's a partial sample TC15 64 bit booting:
Start End Size Dmesg
0.00B 637.99K 638.00K [ 0.000000] BIOS-e820: [mem 0x0000000000000
000-0x000000000009f7ff] usable
638.00K 639.99K 2048.00B [ 0.000000] BIOS-e820: [mem 0x000000000009f
800-0x000000000009ffff] reserved
880.00K 1023.99K 144.00K [ 0.000000] BIOS-e820: [mem 0x00000000000dc
000-0x00000000000fffff] reserved
1024.00K 3062.81M 3061.81M [ 0.000000] BIOS-e820: [mem 0x0000000000100
000-0x00000000bf6cffff] usable
3062.81M 3062.87M 64.00K [ 0.000000] BIOS-e820: [mem 0x00000000bf6d0
000-0x00000000bf6dffff] ACPI data
3062.87M 3062.88M 12.00K [ 0.000000] BIOS-e820: [mem 0x00000000bf6e0
000-0x00000000bf6e2fff] ACPI NVS
3062.88M 3071.99M 9332.00K [ 0.000000] BIOS-e820: [mem 0x00000000bf6e3
000-0x00000000bfffffff] reserved
3584.00M 3839.99M 256.00M [ 0.000000] BIOS-e820: [mem 0x00000000e0000
000-0x00000000efffffff] reserved
4076.00M 4076.06M 64.00K [ 0.000000] BIOS-e820: [mem 0x00000000fec00
000-0x00000000fec0ffff] reserved
4077.00M 4077.00M 1024.00B [ 0.000000] BIOS-e820: [mem 0x00000000fed00
000-0x00000000fed003ff] reserved
4077.07M 4077.10M 24.00K [ 0.000000] BIOS-e820: [mem 0x00000000fed14
000-0x00000000fed19fff] reserved
4077.10M 4077.56M 464.00K [ 0.000000] BIOS-e820: [mem 0x00000000fed1c
000-0x00000000fed8ffff] reserved
4078.00M 4078.00M 4096.00B [ 0.000000] BIOS-e820: [mem 0x00000000fee00
000-0x00000000fee00fff] reserved
4080.00M 4095.99M 16.00M [ 0.000000] BIOS-e820: [mem 0x00000000ff000
000-0x00000000ffffffff] reserved
4096.00M 5119.99M 1024.00M [ 0.000000] BIOS-e820: [mem 0x0000000100000
000-0x000000013fffffff] usable
0.00B 4095.00B 4096.00B [ 0.005306] e820: update [mem 0x00000000-0x
00000fff] usable ==> reserved
640.00K 1023.99K 384.00K [ 0.005311] e820: remove [mem 0x000a0000-0x
000fffff] usable
3063.00M 4095.99M 1033.00M [ 0.006110] e820: update [mem 0xbf700000-0x
ffffffff] usable ==> reserved
992.14K 992.15K 16.00B [ 0.014355] found SMP MP-table at [mem 0x00
0f8090-0x000f809f]
868.88M 882.41M 13.52M [ 0.015338] RAMDISK: [mem 0x364e3000-0x3726
8fff]
3062.87M 3062.87M 244.00B [ 0.015445] ACPI: Reserving FACP table memo
ry at [mem 0xbf6dfc04-0xbf6dfcf7]
3062.84M 3062.87M 26.36K [ 0.015447] ACPI: Reserving DSDT table memo
ry at [mem 0xbf6d9217-0xbf6dfb8f]
3062.88M 3062.88M 64.00B [ 0.015449] ACPI: Reserving FACS table memo
ry at [mem 0xbf6e2fc0-0xbf6e2fff]
3062.88M 3062.88M 64.00B [ 0.015451] ACPI: Reserving FACS table memo
ry at [mem 0xbf6e2fc0-0xbf6e2fff]
3062.87M 3062.87M 104.00B [ 0.015452] ACPI: Reserving APIC table memo
ry at [mem 0xbf6dfcf8-0xbf6dfd5f]
3062.87M 3062.87M 56.00B [ 0.015454] ACPI: Reserving HPET table memo
ry at [mem 0xbf6dfd60-0xbf6dfd97]
3062.87M 3062.87M 60.00B [ 0.015456] ACPI: Reserving MCFG table memo
ry at [mem 0xbf6dfd98-0xbf6dfdd3]
3062.87M 3062.87M 374.00B [ 0.015458] ACPI: Reserving SLIC table memo
ry at [mem 0xbf6dfdd4-0xbf6dff49]
3062.87M 3062.87M 38.00B [ 0.015459] ACPI: Reserving TMOR table memo
ry at [mem 0xbf6dff4a-0xbf6dff6f]
3062.87M 3062.87M 104.00B [ 0.015461] ACPI: Reserving APIC table memo
ry at [mem 0xbf6dff70-0xbf6dffd7]
3062.87M 3062.87M 40.00B [ 0.015463] ACPI: Reserving BOOT table memo
ry at [mem 0xbf6dffd8-0xbf6dffff]
3062.84M 3062.84M 285.00B [ 0.015465] ACPI: Reserving SSDT table memo
ry at [mem 0xbf6d90fa-0xbf6d9216]
3062.84M 3062.84M 291.00B [ 0.015466] ACPI: Reserving SSDT table memo
ry at [mem 0xbf6d8fd7-0xbf6d90f9]
3062.84M 3062.84M 647.00B [ 0.015468] ACPI: Reserving SSDT table memo
ry at [mem 0xbf6d8482-0xbf6d8708]
3062.84M 3062.84M 180.00B [ 0.015470] ACPI: Reserving SSDT table memo
ry at [mem 0xbf6d83ce-0xbf6d8481]
3062.84M 3062.84M 1332.00B [ 0.015472] ACPI: Reserving SSDT table memo
ry at [mem 0xbf6d7e9a-0xbf6d83cd]
4096.00B 15.99M 15.99M [ 0.015519] DMA [mem 0x0000000000001
000-0x0000000000ffffff]
16.00M 4095.99M 4080.00M [ 0.015522] DMA32 [mem 0x0000000001000
000-0x00000000ffffffff]
4096.00M 5119.99M 1024.00M [ 0.015525] Normal [mem 0x0000000100000
000-0x000000013fffffff]
4096.00B 635.99K 632.00K [ 0.015530] node 0: [mem 0x000000000000
1000-0x000000000009efff]
1024.00K 3062.81M 3061.81M [ 0.015532] node 0: [mem 0x000000000010
0000-0x00000000bf6cffff]
4096.00M 5119.99M 1024.00M [ 0.015534] node 0: [mem 0x000000010000
0000-0x000000013fffffff]
4096.00B 5119.99M 5119.99M [ 0.015536] Initmem setup node 0 [mem 0x000
0000000001000-0x000000013fffffff]
3064.00M 3071.99M 8192.00K [ 0.049696] Reserving Intel graphics memory
at [mem 0xbf800000-0xbfffffff]
0.00B 4095.00B 4096.00B [ 0.050105] PM: hibernation: Registered nos
ave memory: [mem 0x00000000-0x00000fff]
636.00K 639.99K 4096.00B [ 0.050108] PM: hibernation: Registered nos
ave memory: [mem 0x0009f000-0x0009ffff]
640.00K 879.99K 240.00K [ 0.050110] PM: hibernation: Registered nos
ave memory: [mem 0x000a0000-0x000dbfff]
880.00K 1023.99K 144.00K [ 0.050111] PM: hibernation: Registered nos
ave memory: [mem 0x000dc000-0x000fffff]
3062.81M 3062.87M 64.00K [ 0.050113] PM: hibernation: Registered nos
ave memory: [mem 0xbf6d0000-0xbf6dffff]
3062.87M 3062.88M 12.00K [ 0.050115] PM: hibernation: Registered nos
ave memory: [mem 0xbf6e0000-0xbf6e2fff]
3062.88M 3071.99M 9332.00K [ 0.050117] PM: hibernation: Registered nos
ave memory: [mem 0xbf6e3000-0xbfffffff]
3072.00M 3583.99M 512.00M [ 0.050118] PM: hibernation: Registered nos
ave memory: [mem 0xc0000000-0xdfffffff]
3584.00M 3839.99M 256.00M [ 0.050120] PM: hibernation: Registered nos
ave memory: [mem 0xe0000000-0xefffffff]
3840.00M 4075.99M 236.00M [ 0.050121] PM: hibernation: Registered nos
ave memory: [mem 0xf0000000-0xfebfffff]
4076.00M 4076.06M 64.00K [ 0.050123] PM: hibernation: Registered nos
ave memory: [mem 0xfec00000-0xfec0ffff]
4076.06M 4076.99M 960.00K [ 0.050124] PM: hibernation: Registered nos
ave memory: [mem 0xfec10000-0xfecfffff]
4077.00M 4077.07M 80.00K [ 0.050126] PM: hibernation: Registered nos
ave memory: [mem 0xfed00000-0xfed13fff]
4077.07M 4077.10M 24.00K [ 0.050127] PM: hibernation: Registered nos
ave memory: [mem 0xfed14000-0xfed19fff]
4077.10M 4077.10M 8192.00B [ 0.050129] PM: hibernation: Registered nos
ave memory: [mem 0xfed1a000-0xfed1bfff]
4077.10M 4077.56M 464.00K [ 0.050131] PM: hibernation: Registered nos
ave memory: [mem 0xfed1c000-0xfed8ffff]
4077.56M 4077.99M 448.00K [ 0.050132] PM: hibernation: Registered nos
ave memory: [mem 0xfed90000-0xfedfffff]
4078.00M 4078.00M 4096.00B [ 0.050134] PM: hibernation: Registered nos
ave memory: [mem 0xfee00000-0xfee00fff]
4078.00M 4079.99M 2044.00K [ 0.050135] PM: hibernation: Registered nos
ave memory: [mem 0xfee01000-0xfeffffff]
4080.00M 4095.99M 16.00M [ 0.050137] PM: hibernation: Registered nos
ave memory: [mem 0xff000000-0xffffffff]
3072.00M 3583.99M 512.00M [ 0.050140] [mem 0xc0000000-0xdfffffff] ava
ilable for PCI devices
3062.87M 3062.88M 12.00K [ 0.291821] ACPI: PM: Registering ACPI NVS
region [mem 0xbf6e0000-0xbf6e2fff] (12288 byte
s)
3584.00M 3839.99M 256.00M [ 0.294577] PCI: MMCONFIG for domain 0000 [
bus 00-ff] at [mem 0xe0000000-0xefffffff] (bas
e 0xe0000000)
3584.00M 3839.99M 256.00M [ 0.294585] PCI: MMCONFIG at [mem 0xe000000
0-0xefffffff] reserved as E820 entry
0.00B 3319.00B 3320.00B [ 0.557645] pci_bus 0000:00: root bus resou
rce [io 0x0000-0x0cf7 window]
3328.00B 63.99K 60.75K [ 0.557649] pci_bus 0000:00: root bus resou
rce [io 0x0d00-0xffff window]
640.00K 767.99K 128.00K [ 0.557653] pci_bus 0000:00: root bus resou
rce [mem 0x000a0000-0x000bffff window]
832.00K 879.99K 48.00K [ 0.557662] pci_bus 0000:00: root bus resou
rce [mem 0x000d0000-0x000dbfff window]
3072.00M 3583.99M 512.00M [ 0.557666] pci_bus 0000:00: root bus resou
rce [mem 0xc0000000-0xdfffffff window]
3840.00M 4075.99M 236.00M [ 0.557670] pci_bus 0000:00: root bus resou
rce [mem 0xf0000000-0xfebfffff window]
4032.00M 4032.99M 1024.00K [ 0.557893] pci 0000:00:02.0: reg 0x10: [me
m 0xfc000000-0xfc0fffff 64bit]
3328.00M 3583.99M 256.00M [ 0.557904] pci 0000:00:02.0: reg 0x18: [me
m 0xd0000000-0xdfffffff 64bit pref]
6144.00B 6151.00B 8.00B [ 0.557912] pci 0000:00:02.0: reg 0x20: [io
0x1800-0x1807]
The script is attached.
Welcome
FAQ
Downloads
Wiki
