Retrieve CPU number info from the device tree.
Obtained from: Freescale, Semihalf.
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parent
2f6bd24181
commit
925f0a6ed6
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=236098
@ -1,5 +1,5 @@
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/*-
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* Copyright (c) 2008-2009 Semihalf, Rafal Jaworowski
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* Copyright (c) 2008-2012 Semihalf.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -101,26 +101,16 @@ PLATFORM_DEF(bare_platform);
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static int
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bare_probe(platform_t plat)
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{
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uint32_t ver, sr;
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phandle_t cpus, child;
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uint32_t sr;
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int i, law_max, tgt;
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ver = SVR_VER(mfspr(SPR_SVR));
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switch (ver & ~0x0008) { /* Mask Security Enabled bit */
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case SVR_P4080:
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maxcpu = 8;
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break;
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case SVR_P4040:
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maxcpu = 4;
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break;
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case SVR_MPC8572:
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case SVR_P1020:
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case SVR_P2020:
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maxcpu = 2;
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break;
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default:
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if ((cpus = OF_finddevice("/cpus")) != 0) {
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for (maxcpu = 0, child = OF_child(cpus); child != 0;
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child = OF_peer(child), maxcpu++)
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;
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} else
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maxcpu = 1;
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break;
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}
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/*
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* Clear local access windows. Skip DRAM entries, so we don't shoot
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