Gentoo Archives: gentoo-user

From: Raffaele BELARDI <raffaele.belardi@××.com>
To: "gentoo-user@l.g.o" <gentoo-user@l.g.o>
Subject: RE: [gentoo-user] gentoo-sources kernel not seeing 4G ram
Date: Thu, 09 Jan 2020 07:34:32
Message-Id: AM0PR10MB2436DB1407C9320723F35A5DF7390@AM0PR10MB2436.EURPRD10.PROD.OUTLOOK.COM
In Reply to: [gentoo-user] gentoo-sources kernel not seeing 4G ram by Bill Kenworthy
1 No experience on this, but looks like it can be done with the patched mainline kernel:
2 https://forum.odroid.com/viewtopic.php?t=33993
3
4 Just for my understanding, gentoo-sources does not contain all the drivers needed by this board so you are trying to copy those from the 'hardkernel' sources, correct?
5
6 Raffaele
7
8 > -----Original Message-----
9 > From: Bill Kenworthy <billk@×××××××××.au>
10 > Sent: Thursday, January 9, 2020 02:50
11 > To: gentoo-user@l.g.o
12 > Subject: [gentoo-user] gentoo-sources kernel not seeing 4G ram
13 >
14 > Hi, not sure anyone can help with this as its a bit off the reservation :)
15 >
16 > I have a Odroid N2 with 4G ram that is only seeing 1G. (even from right at
17 > boot looking at dmesg).  Its part of the board so its not a connector issue.
18 >
19 > Kernel is gentoo-sources-5.4.8 with the AMLOGIC armv8 relevant bits copied
20 > from the 4.9 series original hardkernel sources.  OS is gentoo AARCH64.  This
21 > all built and runs quite nicely, but cant see the full 4G ram that should be
22 > there.
23 >
24 > Ive attached my latest kernel config in the hope that someone can see
25 > something Ive missed (presuming it isn't an inherent problem in the way I
26 > have gone about this) - looking at the config, diffing it against the hardkernel
27 > source etc. hasn't helped.  Below is the start of dmesg up to the memory
28 > statement.
29 >
30 > My next move will be to go back to the 4.9 supplied kernel and make sure it
31 > isn't hardware failure (unlikely, but ...)
32 >
33 > BillK
34 >
35 > [    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
36 > [    0.000000] Linux version 5.4.8-gentoo (root@n2) (gcc version 9.2.0 (Gentoo
37 > 9.2.0-r2 p3)) #1 SMP PREEMPT Thu Jan 9 08:36:20 AWST 2020 [    0.000000]
38 > Machine model: Hardkernel ODROID-N2 [    0.000000] efi: Getting EFI
39 > parameters from FDT:
40 > [    0.000000] efi: UEFI not found.
41 > [    0.000000] Reserved memory: created CMA memory pool at
42 > 0x0000000030000000, size 256 MiB [    0.000000] OF: reserved mem: initialized
43 > node linux,cma, compatible id shared-dma-pool [    0.000000] NUMA: No
44 > NUMA configuration found [    0.000000] NUMA: Faking a node at [mem
45 > 0x0000000000000000-0x000000003fffffff]
46 > [    0.000000] NUMA: NODE_DATA [mem 0x2fdb6800-0x2fdb7fff] [    0.000000]
47 > Zone ranges:
48 > [    0.000000]   DMA32    [mem 0x0000000000000000-0x000000003fffffff]
49 > [    0.000000]   Normal   empty
50 > [    0.000000] Movable zone start for each node [    0.000000] Early memory
51 > node ranges [    0.000000]   node   0: [mem 0x0000000000000000-
52 > 0x0000000004ffffff]
53 > [    0.000000]   node   0: [mem 0x0000000005300000-0x000000003fffffff]
54 > [    0.000000] Initmem setup node 0 [mem 0x0000000000000000-
55 > 0x000000003fffffff]
56 > [    0.000000] On node 0 totalpages: 261376 [    0.000000]   DMA32 zone: 4096
57 > pages used for memmap [    0.000000]   DMA32 zone: 0 pages reserved
58 > [    0.000000]   DMA32 zone: 261376 pages, LIFO batch:63 [    0.000000] psci:
59 > probing for conduit method from DT.
60 > [    0.000000] psci: PSCIv1.0 detected in firmware.
61 > [    0.000000] psci: Using standard PSCI v0.2 function IDs [    0.000000] psci:
62 > MIGRATE_INFO_TYPE not supported.
63 > [    0.000000] psci: SMC Calling Convention v1.1 [    0.000000] percpu:
64 > Embedded 22 pages/cpu s52632 r8192 d29288 u90112 [    0.000000] pcpu-alloc:
65 > s52632 r8192 d29288 u90112 alloc=22*4096 [    0.000000] pcpu-alloc: [0] 0 [0] 1
66 > [0] 2 [0] 3 [0] 4 [0] 5 [    0.000000] Detected VIPT I-cache on CPU0 [    0.000000]
67 > CPU features: detected: ARM erratum 845719 [    0.000000] Built 1 zonelists,
68 > mobility grouping on.  Total pages: 257280 [    0.000000] Policy zone: DMA32
69 > [    0.000000] Kernel command line: root=/dev/mmcblk0p2 rootwait rw
70 > console=ttyAML0,115200n8  no_console_suspend fsck.repair=yes
71 > net.ifnames=0 elevator=noop hdmimode=1080p60hz cvbsmode=576cvbs
72 > max_freq_a53=1896 max_freq_a73=1800 maxcpus=6 voutmode=hdmi
73 > disablehpd=false cvbscable=0 overscan=100  monitor_onoff=false
74 > usb-xhci.tablesize=2 logo=osd0,loaded
75 > [    0.000000] Dentry cache hash table entries: 131072 (order: 8,
76 > 1048576 bytes, linear)
77 > [    0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes,
78 > linear) [    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
79 > [    0.000000] Memory: 748756K/1045504K available (7932K kernel code, 728K
80 > rwdata, 2784K rodata, 1856K init, 403K bss, 34604K reserved, 262144K cma-
81 > reserved) [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0,
82 > CPUs=6, Nodes=1 [    0.000000] rcu: Preemptible hierarchical RCU
83 > implementation.
84 > [    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=256 to
85 > nr_cpu_ids=6.

Replies

Subject Author
Re: [gentoo-user] gentoo-sources kernel not seeing 4G ram Bill Kenworthy <billk@×××××××××.au>