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

Patrick Venture venture at google.com
Sat Aug 1 05:56:47 AEST 2020


On Fri, Jul 31, 2020 at 11:21 AM Connie Yin <ConnieY at ami.com> wrote:
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> Hi, Team,
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> 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.
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> I saw once when test on some platform,  0xfedc1000 was used as host LPC address.
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> 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.

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> Thanks a lot.
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> Connie
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> P Please consider the environment before printing this email
>
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