Re: [U-Boot] [PATCH v3 15/20] Add console command to access io space registers

6 Dec 2012


      On Wed, Dec 5, 2012 at 5:23 PM, Fabio Estevam festevam@gmail.com wrote:
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On Wed, Dec 5, 2012 at 10:46 PM, Simon Glass sjg@chromium.org wrote:
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From: Vadim Bendebury vbendeb@chromium.org
Provide u-boot console functions to access IO space registers. A no
thrills implementation, accessing one register at a time.
For example:
    boot > iod 80
    0080: 00000094
    boot > iod.w 80
    0080: 0094
    boot > iod.b 80
    0080: 94
    boot > iow.b 0x80 12
    boot > iod 0x80
    0080: 00000012
Doesn't md/mw accomplish the same?
No - md/mw access memory, the new commands access the IO space (which
is an x86 architecture property).
cheers,
/vb
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Regards,
Fabio Estevam