> I am attempting to write a routine to initialize the cache for a MIPS
> 4kc core to get Linux 18.104.22.168 to compile. I am sure someone has
> probably already done this, but I am doing it for educational reasons.
> I am receiving the following error:
> arch/mips/kernel/head.S: Assembler messages:
> arch/mips/kernel/head.S:131: Error: Instruction cache requires absolute
> From the following code section:
> li t0, 0x80000000 # start address (KSEG0)
> addu t1,t0,0x2000 # 8KB I-cache
> 1: addu t0,0x10 # 16B line size
> cache Index_Store_Tag_I,-4(t0) # clear tag
> cache Fill_I,-4(t0) # fill line
> bne t0,t1,1b
> cache Index_Store_Tag_I,-4(t0)
> I copied the code section from See MIPS Run, so I know the code must be
> correct. What am I doing wrong?
Where and how is the value of Index_Store_Tag_I defined?