On my v891w, i add "memmap=1M!2047M ramoops.mem_size=1048576 ramoops.ecc=1 ramoops.mem_address=0x7ff00000 ramoops.console_size=16384 ramoops.ftrace_size=16384 ramoops.pmsg_size=16384 ramoops.record_size=32768" boot parameter, [ 0.483935] printk: console [pstore-1] enabled [ 0.484034] pstore: Registered ramoops as persistent store backend [ 0.484121] ramoops: using 0x100000@0x7ff00000, ecc: 16 But on my ezpad 6 m4, i add "memmap=1M!4095M ramoops.mem_size=1048576 ramoops.ecc=1 ramoops.mem_address=0xfff00000 ramoops.console_size=16384 ramoops.ftrace_size=16384 ramoops.pmsg_size=16384 ramoops.record_size=32768" boot parameter, it can't boot, stop at "boot command list", no anyting happen, no dmesg. I test boot parameter one by one, just add ramoops.mem_size=1048576, will cause can't boot. youling 257 <youling257@xxxxxxxxx> 于2019年11月2日周六 上午10:26写道： > > Ram map > > [ 0.000000] BIOS-provided physical RAM map: > [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000008efff] usable > [ 0.000000] BIOS-e820: [mem 0x000000000008f000-0x000000000008ffff] ACPI NVS > [ 0.000000] BIOS-e820: [mem 0x0000000000090000-0x000000000009ffff] usable > [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000001effffff] usable > [ 0.000000] BIOS-e820: [mem 0x000000001f000000-0x00000000201fffff] reserved > [ 0.000000] BIOS-e820: [mem 0x0000000020200000-0x00000000b6de7fff] usable > [ 0.000000] BIOS-e820: [mem 0x00000000b6de8000-0x00000000b6e08fff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000b6e09000-0x00000000ba608fff] usable > [ 0.000000] BIOS-e820: [mem 0x00000000ba609000-0x00000000ba698fff] type 20 > [ 0.000000] BIOS-e820: [mem 0x00000000ba699000-0x00000000baf18fff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000baf19000-0x00000000bb018fff] ACPI NVS > [ 0.000000] BIOS-e820: [mem 0x00000000bb019000-0x00000000bb058fff] ACPI data > [ 0.000000] BIOS-e820: [mem 0x00000000bb059000-0x00000000bbffffff] usable > [ 0.000000] BIOS-e820: [mem 0x00000000e0000000-0x00000000e3ffffff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000fea00000-0x00000000feafffff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000fec00000-0x00000000fec00fff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000fed01000-0x00000000fed01fff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000fed03000-0x00000000fed03fff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000fed06000-0x00000000fed06fff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000fed08000-0x00000000fed09fff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1cfff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000fed80000-0x00000000fedbffff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000fee00000-0x00000000fee00fff] reserved > [ 0.000000] BIOS-e820: [mem 0x00000000ffc00000-0x00000000ffffffff] reserved > [ 0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000013fffffff] usable > [ 0.000000] NX (Execute Disable) protection: active > [ 0.000000] efi: EFI v2.40 by INSYDE Corp. > [ 0.000000] efi: ACPI 2.0=0xbb058014 SMBIOS=0xba6a9000 ESRT=0xba6ac918 > [ 0.000000] SMBIOS 2.8 present. > [ 0.000000] DMI: jumper EZpad/EZpad, BIOS Jumper8.S106x.A00C.1066 12/22/2015 > [ 0.000000] tsc: Detected 1440.000 MHz processor > [ 0.000298] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved > [ 0.000302] e820: remove [mem 0x000a0000-0x000fffff] usable > > youling 257 <youling257@xxxxxxxxx> 于2019年11月2日周六 上午10:23写道： > > > > only add ramoops.mem_size=1048576 boot parameter cause can't boot on > > my device, stop at booting command list, no anyting happen, no dmesg. > > > >
