Re: How to recognize a LEON CPU?
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On 05/21/2012 11:12 PM, David Miller wrote:
From: Sam Ravnborg<sam@xxxxxxxxxxxx> Date: Mon, 21 May 2012 18:22:53 +0200I assume this can be determinded from PSR.> From arch/sparc/kernel/cpu.c: psr IMPL 0xf with psr VERS of 3
Correct. As I written Sam: The LEON is SPARC compliant and has a registered number, from the manual (http://gaisler.com/products/grlib/grip.pdf section LEON3 and LEON4): 65.2.3 SPARC Implementor's ID Gaisler Research is assigned number 15 (0xF) as SPARC implementor's identification. This value is hard-coded into bits 31:28 in the %psr register. The version number for LEON3 is 3, which is hard- coded in to bits 27:24 of the %psr. Note that LEON3 and LEON4 have the same version number, they are software compatible. Daniel -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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