[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: Robert Brose <bob@qbjnet.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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@ -931,6 +931,8 @@ and is between 256 and 4096 characters. It is defined in the file
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l2cr= [PPC]
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l2cr= [PPC]
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l3cr= [PPC]
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lapic [X86-32,APIC] Enable the local APIC even if BIOS
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lapic [X86-32,APIC] Enable the local APIC even if BIOS
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disabled it.
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disabled it.
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@ -172,6 +172,18 @@ int __init ppc_setup_l2cr(char *str)
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}
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}
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__setup("l2cr=", ppc_setup_l2cr);
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__setup("l2cr=", ppc_setup_l2cr);
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/* Checks "l3cr=xxxx" command-line option */
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int __init ppc_setup_l3cr(char *str)
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{
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if (cpu_has_feature(CPU_FTR_L3CR)) {
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unsigned long val = simple_strtoul(str, NULL, 0);
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printk(KERN_INFO "l3cr set to %lx\n", val);
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_set_L3CR(val); /* and enable it */
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}
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return 1;
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}
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__setup("l3cr=", ppc_setup_l3cr);
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#ifdef CONFIG_GENERIC_NVRAM
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#ifdef CONFIG_GENERIC_NVRAM
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/* Generic nvram hooks used by drivers/char/gen_nvram.c */
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/* Generic nvram hooks used by drivers/char/gen_nvram.c */
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