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Commit a78bfbfc authored by Robert Brose's avatar Robert Brose Committed by Paul Mackerras
Browse files

[POWERPC] Add kernel parameter to set l3cr for MPC745x 



Old-world powermacs don't set L2CR or L3CR on processor upgrade cards.
This simple patch allows the setting of L3CR via a kernel parameter
(like the existing kernel parameter to set L2CR).

Signed-off-by: default avatarRobert Brose <bob@qbjnet.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent b163a256

Documentation/kernel-parameters.txt

+2 −0
Original line number Diff line number Diff line
@@ -931,6 +931,8 @@ and is between 256 and 4096 characters. It is defined in the file 


	l2cr=		[PPC]



	l3cr=		[PPC]



	lapic		[X86-32,APIC] Enable the local APIC even if BIOS

			disabled it.

arch/powerpc/kernel/setup_32.c

+12 −0
Original line number Diff line number Diff line
@@ -172,6 +172,18 @@ int __init ppc_setup_l2cr(char *str) 
}

__setup("l2cr=", ppc_setup_l2cr);



/* Checks "l3cr=xxxx" command-line option */

int __init ppc_setup_l3cr(char *str)

{

	if (cpu_has_feature(CPU_FTR_L3CR)) {

		unsigned long val = simple_strtoul(str, NULL, 0);

		printk(KERN_INFO "l3cr set to %lx\n", val);

		_set_L3CR(val);		/* and enable it */

	}

	return 1;

}

__setup("l3cr=", ppc_setup_l3cr);



#ifdef CONFIG_GENERIC_NVRAM



/* Generic nvram hooks used by drivers/char/gen_nvram.c */