Query regarding the host LPC address in phosphor-ipmi-flash

[Connie Yin]

Hi, Patrick,

Thanks a lot for the replay.

I got an e820 map of this x86 system (with aspeed ast2500) as follows, and chose the host-lpc address as 0xfe410000 (Unused) alongwith --length 0x10000

+-------------------------------------------------------------------------+
  | Size        | Start       | End         | Usage                         |
  | 16 MB       | 0xFD000000  | 0xFDFFFFFF  | SBREG                         |
  | 64 KB       | 0xFE000000  | 0xFE00FFFF  | PMC MBAR                      |
  | 4 KB        | 0xFE010000  | 0xFE010FFF  | SPI BAR0                      |
  | 88 KB       | 0xFE020000  | 0xFE035FFF  | SerialIo BAR in ACPI mode     |
  | 24 KB       | 0xFE036000  | 0xFE03BFFF  | Unused                        |
  | 4 KB        | 0xFE03C000  | 0xFE03CFFF  | Thermal Device in ACPI mode   |
  | 524 KB      | 0xFE03D000  | 0xFE0BFFFF  | Unused                        |
  | 256 KB      | 0xFE0C0000  | 0xFE0FFFFF  | TraceHub FW BAR               |
  | 1 MB        | 0xFE100000  | 0xFE1FFFFF  | TraceHub MTB BAR              |
  | 2 MB        | 0xFE200000  | 0xFE3FFFFF  | TraceHub SW BAR               |
  | 64 KB       | 0xFE400000  | 0xFE40FFFF  | CIO2 MMIO BAR in ACPI mode    |
  | 2 MB - 64KB | 0xFE410000  | 0xFE5FFFFF  | Unused                        |
  | 2 MB        | 0xFE600000  | 0xFE7FFFFF  | Temp address                  |
  +-------------------------------------------------------------------------+

And configured in BMC with these lines:

PACKAGECONFIG_append_xxx = " static-bmc"
PACKAGECONFIG_append_xxx = " aspeed-lpc"
PACKAGECONFIG_append_xxx = " reboot-update"
IPMI_FLASH_BMC_ADDRESS_xxx = "0x83000000"


And ran this app on host:

./burn_my_bmc
 --command update \
 --interface ipmilpc \
 --image image-bmc \
 --sig image-bmc.sig \
 --type image \
 --address 0xfe41000 \
 --length 0x10000


Sending over the firmware image.
sending writeMeta
writemeta sent
Progress: 100.00%
Sending over the hash file.
sending writeMeta
writemeta sent
Progress: 100.00%
Opening the verification file
Committing to /flash/verify to trigger service
Calling stat on /flash/verify session to check status
running
success
Returned success
succeeded
Opening the update file
Committing to /flash/update to trigger service
Calling stat on /flash/update session to check status
running
Opening the cleanup blob
Exception received: blob exception received: Received IPMI_CC: 255




I was able to see there was a 32M size of image-bmc had been uploaded under /run/initramfs, but by using hexdump -C, finding this uploaded file was not the correct image data as expected.

Do you have any suggestions?


Thanks,
Connie









-----Original Message-----
From: Patrick Venture [mailto:venture at google.com] 
Sent: Friday, July 31, 2020 3:57 PM
To: Connie Yin
Cc: openbmc at lists.ozlabs.org
Subject: Re: Query regarding the host LPC address in phosphor-ipmi-flash

On Fri, Jul 31, 2020 at 11:21 AM Connie Yin <ConnieY at ami.com> wrote:
>
> Hi, Team,
>
>
>
> I am checking this OpemBMC firmware update interface on an x86 system, and wondering how to construct this host LPC address at which the chunk is to be mapped.
>
> I saw once when test on some platform,  0xfedc1000 was used as host LPC address.
>
>
>
> Would anyone please elaborate a little bit more?  To get this host LPC address,  should I add/modify some drivers in BMC? What about host side?

The host-side address is a region set aside in the BIOS that gets
reserved in the e820 map.  The BiOS dev adds it manually for this
purpose.

>
>
>
>
>
> Thanks a lot.
>
> Connie
>
> P Please consider the environment before printing this email
>
> The information contained in this message may be confidential and proprietary to American Megatrends (AMI). This communication is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. Please promptly notify the sender by reply e-mail or by telephone at 770-246-8600, and then delete or destroy all copies of the transmission.

Please consider the environment before printing this email.

The information contained in this message may be confidential and proprietary to American Megatrends (AMI).  This communication is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited.  Please promptly notify the sender by reply e-mail or by telephone at 770-246-8600, and then delete or destroy all copies of the transmission.