On 05/21/2012 06:22 PM, Sam Ravnborg wrote:
Who is the relevant Gaisler contact person these days for Linux stuff? I sometimes uses Daniel, sometimes Konrad.
Please CC both of us. Kristoffer Glembo is no longer active though.
I can just add both of you - this is no problem. As I plan to update the LEON integration it would be good to have in place. Anyway - the real question.. In head_32.S I need very early on to determine the CPU type, so I can distingush between LEON and SUN. This is due to LEON using a different ASI for mmuregs as discussed in another mail. I assume this can be determinded from PSR. If this is correct - then what values shall I use to determine if the relevant cpu is LEON or SUN?
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
