From 2cd976477035716af52a6eff6625f32e5813c02b Mon Sep 17 00:00:00 2001 From: David Gibson Date: Tue, 8 May 2007 12:59:30 +1000 Subject: [POWERPC] Add powerpc/platforms/44x, disable platforms/4xx for now This prepares for Ebony/440 support by creating an arch/powerpc/platforms/44x directory. It is populated with a single misc_44x.S file, into which is moved the 44x specific reset code from head_44x.S (on the grounds that we should really stop clogging up the head_* files with random asm helper routines). At the same time, we disable the (empty save Kconfig and Makefile) arch/powerpc/platforms/4xx directory from the arch/powerpc/platforms Makefile. Contrary to the comment in arch/powerpc/platforms/4xx/Makefile, attempting to build such an empty Makefile will fail, thus breaking compile for the 44x platforms we're about to add. It can go back in once we start porting some of the 40x platforms (and thus it becomes non-empty). Signed-off-by: David Gibson Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/head_44x.S | 10 ---------- arch/powerpc/platforms/44x/44x.h | 6 ++++++ arch/powerpc/platforms/44x/Makefile | 1 + arch/powerpc/platforms/44x/misc_44x.S | 26 ++++++++++++++++++++++++++ arch/powerpc/platforms/Makefile | 3 ++- 5 files changed, 35 insertions(+), 11 deletions(-) create mode 100644 arch/powerpc/platforms/44x/44x.h create mode 100644 arch/powerpc/platforms/44x/Makefile create mode 100644 arch/powerpc/platforms/44x/misc_44x.S diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S index 9ee6773cf02..a51026f0a9d 100644 --- a/arch/powerpc/kernel/head_44x.S +++ b/arch/powerpc/kernel/head_44x.S @@ -709,16 +709,6 @@ _GLOBAL(giveup_fpu) blr #endif -/* - * extern void abort(void) - * - * At present, this routine just applies a system reset. - */ -_GLOBAL(abort) - mfspr r13,SPRN_DBCR0 - oris r13,r13,DBCR0_RST_SYSTEM@h - mtspr SPRN_DBCR0,r13 - _GLOBAL(set_context) #ifdef CONFIG_BDI_SWITCH diff --git a/arch/powerpc/platforms/44x/44x.h b/arch/powerpc/platforms/44x/44x.h new file mode 100644 index 00000000000..45f24b166f4 --- /dev/null +++ b/arch/powerpc/platforms/44x/44x.h @@ -0,0 +1,6 @@ +#ifndef __POWERPC_PLATFORMS_44X_44X_H +#define __POWERPC_PLATFORMS_44X_44X_H + +extern void ppc44x_reset_system(char *cmd); + +#endif /* __POWERPC_PLATFORMS_44X_44X_H */ diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile new file mode 100644 index 00000000000..575fdde5c90 --- /dev/null +++ b/arch/powerpc/platforms/44x/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_44x) := misc_44x.o diff --git a/arch/powerpc/platforms/44x/misc_44x.S b/arch/powerpc/platforms/44x/misc_44x.S new file mode 100644 index 00000000000..52bde71485b --- /dev/null +++ b/arch/powerpc/platforms/44x/misc_44x.S @@ -0,0 +1,26 @@ +/* + * This file contains miscellaneous low-level functions for PPC 44x. + * Copyright 2007 David Gibson , IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + */ + +#include +#include + + .text + +/* + * void ppc44x_reset_system(char *cmd) + * + * At present, this routine just applies a system reset. + */ +_GLOBAL(ppc44x_reset_system) + mfspr r13,SPRN_DBCR0 + oris r13,r13,DBCR0_RST_SYSTEM@h + mtspr SPRN_DBCR0,r13 + b . /* Just in case the reset doesn't work */ diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile index 452004283f1..d6e041a46d2 100644 --- a/arch/powerpc/platforms/Makefile +++ b/arch/powerpc/platforms/Makefile @@ -6,7 +6,8 @@ obj-$(CONFIG_PPC_PMAC) += powermac/ endif endif obj-$(CONFIG_PPC_CHRP) += chrp/ -obj-$(CONFIG_4xx) += 4xx/ +#obj-$(CONFIG_4xx) += 4xx/ +obj-$(CONFIG_44x) += 44x/ obj-$(CONFIG_PPC_MPC52xx) += 52xx/ obj-$(CONFIG_PPC_8xx) += 8xx/ obj-$(CONFIG_PPC_82xx) += 82xx/ -- cgit v1.2.3-70-g09d2