Sorry for the resend, the list software stripped my text attachment.
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).
This is the first time I've posted a patch, please excuse me if I've
broken protocol or done this improperly in any way.
Signed-off-by: Robert Brose <[EMAIL PROTECTED]>
--- linux-2.6.24/arch/powerpc/kernel/setup_32.c.orig 2008-03-10
11:24:16.566354597 -0500
+++ linux-2.6.24/arch/powerpc/kernel/setup_32.c 2008-03-10 11:22:22.711626305
-0500
@@ -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 */
--- linux-2.6.24/Documentation/kernel-parameters.txt.orig 2008-03-25
12:30:09.688082305 -0500
+++ linux-2.6.24/Documentation/kernel-parameters.txt 2008-03-25
12:30:29.816083202 -0500
@@ -877,6 +877,8 @@ and is between 256 and 4096 characters.
l2cr= [PPC]
+ l3cr= [PPC]
+
lapic [X86-32,APIC] Enable the local APIC even if BIOS
disabled it.
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