This adds cpu_setup functionality for ppc44x platform. Low level cpu-spefic initialization routines should be placed in cpu_setup_44x.S and a callback should be added to cputable. The cpu_setup is invoked by identify_cpu() function at early init.
Signed-off-by: Valentine Barshak <[EMAIL PROTECTED]> --- arch/powerpc/kernel/Makefile | 1 + arch/powerpc/kernel/cpu_setup_44x.S | 19 +++++++++++++++++++ arch/powerpc/kernel/cputable.c | 13 +++++++------ 3 files changed, 27 insertions(+), 6 deletions(-) diff -ruN linux-2.6.orig/arch/powerpc/kernel/cpu_setup_44x.S linux-2.6/arch/powerpc/kernel/cpu_setup_44x.S --- linux-2.6.orig/arch/powerpc/kernel/cpu_setup_44x.S 1970-01-01 03:00:00.000000000 +0300 +++ linux-2.6/arch/powerpc/kernel/cpu_setup_44x.S 2007-09-21 17:04:20.000000000 +0400 @@ -0,0 +1,19 @@ +/* + * This file contains low level CPU setup functions. + * Valentine Barshak <[EMAIL PROTECTED]> + * MontaVista Software, Inc (c) 2007 + * + * Based on cpu_setup_6xx code by + * Benjamin Herrenschmidt <[EMAIL PROTECTED]> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + */ + +#include <asm/processor.h> +#include <asm/cputable.h> +#include <asm/ppc_asm.h> + diff -ruN linux-2.6.orig/arch/powerpc/kernel/cputable.c linux-2.6/arch/powerpc/kernel/cputable.c --- linux-2.6.orig/arch/powerpc/kernel/cputable.c 2007-09-21 14:56:40.000000000 +0400 +++ linux-2.6/arch/powerpc/kernel/cputable.c 2007-09-21 17:04:50.000000000 +0400 @@ -1319,17 +1319,18 @@ for (i = 0; i < ARRAY_SIZE(cpu_specs); i++,s++) if ((pvr & s->pvr_mask) == s->pvr_value) { *cur = cpu_specs + i; -#ifdef CONFIG_PPC64 - /* ppc64 expects identify_cpu to also call setup_cpu - * for that processor. I will consolidate that at a - * later time, for now, just use our friend #ifdef. +#if defined(CONFIG_PPC64) || defined(CONFIG_BOOKE) + /* ppc64 and booke expect identify_cpu to also call + * setup_cpu for that processor. I will consolidate + * that at a later time, for now, just use #ifdef. * we also don't need to PTRRELOC the function pointer - * on ppc64 as we are running at 0 in real mode. + * on ppc64 and booke as we are running at 0 in real + * mode on ppc64 and reloc_offset is always 0 on booke. */ if (s->cpu_setup) { s->cpu_setup(offset, s); } -#endif /* CONFIG_PPC64 */ +#endif /* CONFIG_PPC64 || CONFIG_BOOKE */ return s; } BUG(); diff -ruN linux-2.6.orig/arch/powerpc/kernel/Makefile linux-2.6/arch/powerpc/kernel/Makefile --- linux-2.6.orig/arch/powerpc/kernel/Makefile 2007-09-21 14:56:40.000000000 +0400 +++ linux-2.6/arch/powerpc/kernel/Makefile 2007-09-21 17:04:20.000000000 +0400 @@ -56,6 +56,7 @@ udbg.o misc.o io.o obj-$(CONFIG_PPC32) += entry_32.o setup_32.o misc_32.o obj-$(CONFIG_PPC64) += misc_64.o dma_64.o iommu.o +obj-$(CONFIG_44x) += cpu_setup_44x.o obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o obj-$(CONFIG_MODULES) += ppc_ksyms.o obj-$(CONFIG_BOOTX_TEXT) += btext.o _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev