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how to upgrade ram on marvell a38x nas

Posted by linkt 
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linkt
how to upgrade ram on marvell a38x nas
March 03, 2017 03:00AM
I replace original 512mb ram chip with 1gb ram chip,
and read f1001410, f1001504... original ram register value.

disassemble u-boot.bin, search for initializing code.
I can't find any related code to modify.
It's different from old armada xp chip.

anyone could give me a hint to find and modify it?

thanks a lot!


sorry for my poor english.
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bodhi
Re: how to upgrade ram on marvell a38x nas
March 03, 2017 03:53AM
linkt,

Don't worry about your English! I understood you just fine :)

1. Which box? armada 38x cover quite a few boxes. I need to know exactly which one to give you more hints.
2. Have you got the GPL source from the manufacturer? that will be needed so you can rebuild stock u-boot. Modifying u-boot.bin will not work well, if at all.
3. Once you get the GPL source, look at bin_header (unless your stock u-boot is much newer than 2013).

-bodhi
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linkt
Re: how to upgrade ram on marvell a38x nas
March 03, 2017 05:29AM
Thank you for reply me.

My nas is synology ds416slim.

here is the offical GPL source site:
https://sourceforge.net/projects/dsgpl/files/Synology%20NAS%20GPL%20Source/8451branch/armada38x-source/

I think that synology doesn't update and miss some code at the site.

here is my boot message:

Quote


BootROM - 1.73
Booting from SPI flash


General initialization - Version: 1.0.0
AVS selection from EFUSE disabled (Skip reading EFUSE values)
Overriding default AVS value to: 0x23
Detected Device ID 6820
High speed PHY - Version: 2.0

Init Synology board board SerDes lanes topology details:
| Lane # | Speed| Type |
------------------------------|
| 0 | 0 | SGMII0 |
| 2 | 5 | PCIe1 |
| 3 | 0 | SGMII2 |
| 4 | 5 | USB3 HOST0 |
| 5 | 5 | USB3 HOST1 |
-------------------------------
High speed PHY - Ended Successfully
DDR3 Training Sequence - Ver TIP-1.46.0
DDR3 Training Sequence - Switching XBAR Window to FastPath Window
DDR3 Training Sequence - Ended Successfully
Not detected suspend to RAM indication
BootROM: Image checksum verification PASSED

__ __ _ _
| \/ | __ _ _ ____ _____| | |
| |\/| |/ _` | '__\ \ / / _ \ | |
| | | | (_| | | \ V / __/ | |
|_| |_|\__,_|_| \_/ \___|_|_|
_ _ ____ _
| | | | | __ ) ___ ___ | |_
| | | |___| _ \ / _ \ / _ \| __|
| |_| |___| |_) | (_) | (_) | |_
\___/ |____/ \___/ \___/ \__|
** LOADER **


U-Boot 2013.01-g74a026b-dirty (Dec 30 2015 - 14:39:24) Marvell version: 2015_T1.0p16

Board: SYNO-DS416slim
SoC: MV88F6820 Rev A0
running 2 CPUs
CPU: ARM Cortex A9 MPCore (Rev 1) LE
CPU 0
CPU @ 1066 [MHz]
L2 @ 533 [MHz]
TClock @ 250 [MHz]
DDR3 @ 533 [MHz]
DDR3 16 Bit Width,FastPath Memory Access, DLB Enabled, ECC Disabled
DRAM: 512 MiB
MMC: mv_sdh: 0
SF: Detected N25Q64 with page size 64 KiB, total 8 MiB
*** Warning - bad CRC, using default environment

PCI-e 1 (IF 0 - bus 0) Root Complex Interface, Detected Link X1, GEN 2.0
USB2.0 0: Host Mode
USB3.0 0: Host Mode
USB3.0 1: Host Mode

Map: Code: 0x1ff3b000:0x1ffc91bc
BSS: 0x1ffef688
Stack: 0x1fa2af20
Heap: 0x1fa2b000:0x1ff3b000
U-Boot Environment: 0x007e0000:0x007f0000 (SPI)

Board configuration detected:

Synology Model: DS416slim

Net:
| port | Interface | PHY address |
|--------|-----------|--------------|
| egiga0 | SGMII | 0x01 |
| egiga2 | SGMII | 0x00 |
egiga0 [PRIME], egiga2
Press Ctrl+C to abort autoboot in 3 second
Marvell>> md f1001400
f1001400: 7b00481b 36300848 35137773 76011f8a .H.{H.06sw.5...v
f1001410: 1a114441 00000700 00000000 00000000 AD..............
f1001420: 00000000 0060f3ff 000fe830 014c5098 ......`.0....PL.
f1001430: 76543210 fedcba98 000100ff 00000000 .2Tv............
f1001440: 00000000 00000000 00000000 00000000 ................
f1001450: 00000000 00000000 00000000 00000000 ................
f1001460: 00000000 00000000 00000000 00000000 ................
f1001470: 00013204 0000030c 00000000 0000b591 .2..............
f1001480: 00000000 00000000 00000542 00000000 ........B.......
f1001490: 00000000 00010000 00000000 0000000f ................
f10014a0: 00000001 00000000 00000000 00000000 ................
f10014b0: 00000001 00009590 00006f67 00000000 ........go......
f10014c0: 192434e9 092434e9 05143511 8001200d .4$..4$..5... ..
f10014d0: 00000000 00000000 00000000 00000000 ................
f10014e0: 00000200 000002b0 01580158 00000011 ........X.X.....
f10014f0: 00000000 76543210 fedcba98 00000000 .....2Tv........
Marvell>> md f1001500
f1001500: 00000000 0ffffff1 10000000 0ffffff5 ................
f1001510: 20000000 0ffffff9 30000000 0ffffffd ... .......0....
f1001520: 0b4012c0 00008800 000418f0 00000000 ..@.............
f1001530: 00000000 00000000 00000008 0000000e ................
f1001540: 00000000 00000000 00000000 00000000 ................
f1001550: 00000000 00000000 00000000 00000000 ................
f1001560: 00000000 00000000 00000000 00000000 ................
f1001570: 00000000 0ffffff1 10000000 0ffffff5 ................
f1001580: 20000000 0ffffff9 30000000 0ffffffd ... .......0....
f1001590: fffc7f7f 00000000 00000000 00000000 ................
f10015a0: 00000000 00000000 00000000 00000000 ................
f10015b0: 41100000 f80000ff 3400000c 00000000 ...A.......4....
f10015c0: 00000000 06910000 00db6d24 00000000 ........$m......
f10015d0: 00000840 00000046 00000008 00000000 @...F...........
f10015e0: 00000001 00203c18 00000000 d9ff0029 .....< .....)...
f10015f0: 00000000 00000000 00000000 00000000 ................


I want to change ram configuration register:
f1001410 1a 11 44 41 -> 1a 11 44 45
f1001504 0f ff ff f1 -> 1f ff ff f1
f100150c 0f ff ff f5 -> 1f ff ff f5
f1001514 0f ff ff f9 -> 1f ff ff f9
f100151c 0f ff ff fd -> 1f ff ff fd
to use 1g ram.

I have checked older ds414 u-boot source code, it's quite easy to modify .bin file.

ds416slim use a38x chip, the souce code is in different style
and it's hard to find in .bin file.
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bodhi
Re: how to upgrade ram on marvell a38x nas
March 03, 2017 03:14PM
linkt,

> I have checked older ds414 u-boot source code, it'
> s quite easy to modify .bin file.

But you are going to risk bricking it if you don't get it right the first time.

The right way to do this:

1. Try booting with UART using kwboot. You can also find ARM32 version in the u-boot thread.

2. Get the source and rebuild stock u-boot. Use this bin to boot with kwboot. Once you know you can do this, then you can play with u-boot .bin.

3. Look at bin_header in stock u-boot. This is where the memory is defined.

-bodhi
===========================
Forum Wiki
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