Messages in this thread | | | Date | Mon, 3 Feb 2014 18:15:44 +0000 | From | Leif Lindholm <> | Subject | Re: [PATCH v4 2/5] arm: add new asm macro update_sctlr |
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On Mon, Feb 03, 2014 at 04:57:18PM +0000, Will Deacon wrote: > > mov[tw]: why? > > Then we end up battling different available immediate fields in A32/T32 > > instruction sets and v5/v6/v7 architecture versions. > > I was making the assumption that UEFI was going to be v7 only... is this not > true?
There is no such requirement in the specification. It even mentions requirements for ARMv4 in one place :)
But I also don't understand why ldr= should be avoided. This is not performance sensitive (called once on system boot), and it's already executing with the caches off, so even if it ends up being a literal load it does not pollute.
/ Leif
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