Add an option - AR71XX_REALMEM - which overrides the amount of
memory detected from Redboot, or overrides the "otherwise" case if no Redboot information was found. Some AR71XX platforms don't use Redboot (eg TP-LINK devices using UBoot; some later Ubiquiti devices which apparently also use UBoot) and at least one plain out lies - the Ubiquiti LS-SR71A Redboot says there's 16mb of RAM when in fact there's 32mb. A more "clean" solution will be needed at a later date.
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=220052
@ -872,3 +872,9 @@ SDP opt_ofed.h
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SDP_DEBUG opt_ofed.h
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IPOIB_DEBUG opt_ofed.h
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IPOIB_CM opt_ofed.h
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# At least one of the AR71XX ubiquiti boards has a Redboot configuration
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# that "lies" about the amount of RAM it has. Until a cleaner method is
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# defined, this option will suffice in overriding what Redboot says.
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AR71XX_REALMEM opt_global.h
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@ -180,6 +180,20 @@ platform_start(__register_t a0 __unused, __register_t a1 __unused,
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if (realmem == 0)
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realmem = btoc(32*1024*1024);
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/*
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* Allow build-time override in case Redboot lies
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* or in other situations (eg where there's u-boot)
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* where there isn't (yet) a convienent method of
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* being told how much RAM is available.
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*
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* This happens on at least the Ubiquiti LS-SR71A
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* board, where redboot says there's 16mb of RAM
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* but in fact there's 32mb.
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*/
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#if defined(AR71XX_REALMEM)
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realmem = btoc(MIPS_REALMEM);
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#endif
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/* phys_avail regions are in bytes */
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phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
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phys_avail[1] = ctob(realmem);
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