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Commit 231a35d3 authored Jan 04, 2008 by Thomas Bogendoerfer Committed by Ralf Baechle Jan 29, 2008

[MIPS] RM: Collected changes



- EISA support for non PCI RMs (RM200 and RM400-xxx). The major part
  is the splitting of the EISA and onboard ISA of the RM200, which
  makes the EISA bus on the RM200 look like on other RMs.
- 64bit kernel support
- system type detection is now common for big and little endian
- moved sniprom code to arch/mips/fw
- added call_o32 function to arch/mips/fw/lib, which uses a private
  stack for calling prom functions
- fix problem with ISA interrupts, which makes using PIT clockevent
  possible

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 237cfee1

arch/mips/Kconfig

+4 −0

Original line number	Original line	Diff line number	Diff line
	@@ -602,6 +602,7 @@ config SNI_RM
	bool "SNI RM200/300/400"		bool "SNI RM200/300/400"
	select ARC if CPU_LITTLE_ENDIAN		select ARC if CPU_LITTLE_ENDIAN
	select ARC32 if CPU_LITTLE_ENDIAN		select ARC32 if CPU_LITTLE_ENDIAN
			select SNIPROM if CPU_BIG_ENDIAN
	select ARCH_MAY_HAVE_PC_FDC		select ARCH_MAY_HAVE_PC_FDC
	select BOOT_ELF32		select BOOT_ELF32
	select CEVT_R4K		select CEVT_R4K
	@@ -1003,6 +1004,9 @@ config DEFAULT_SGI_PARTITION
	config ARC32		config ARC32
	bool		bool

			config SNIPROM
			bool

	config BOOT_ELF32		config BOOT_ELF32
	bool		bool

arch/mips/Makefile

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -156,6 +156,8 @@ endif
	#		#
	libs-$(CONFIG_ARC) += arch/mips/fw/arc/		libs-$(CONFIG_ARC) += arch/mips/fw/arc/
	libs-$(CONFIG_CFE) += arch/mips/fw/cfe/		libs-$(CONFIG_CFE) += arch/mips/fw/cfe/
			libs-$(CONFIG_SNIPROM) += arch/mips/fw/sni/
			libs-y += arch/mips/fw/lib/
	libs-$(CONFIG_SIBYTE_CFE) += arch/mips/sibyte/cfe/		libs-$(CONFIG_SIBYTE_CFE) += arch/mips/sibyte/cfe/

	#		#

arch/mips/fw/lib/Makefile

0 → 100644

+5 −0

Original line number	Original line	Diff line number	Diff line
			#
			# Makefile for generic prom monitor library routines under Linux.
			#

			lib-$(CONFIG_64BIT) += call_o32.o

arch/mips/fw/lib/call_o32.S

0 → 100644

+97 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* arch/mips/dec/prom/call_o32.S
			*
			* O32 interface for the 64 (or N32) ABI.
			*
			* Copyright (C) 2002 Maciej W. Rozycki
			*
			* 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/asm.h>
			#include <asm/regdef.h>

			/* Maximum number of arguments supported. Must be even! */
			#define O32_ARGC 32
			/* Number of static registers we save. */
			#define O32_STATC 11
			/* Frame size for static register */
			#define O32_FRAMESZ (SZREG * O32_STATC)
			/* Frame size on new stack */
			#define O32_FRAMESZ_NEW (SZREG + 4 * O32_ARGC)

			.text

			/*
			* O32 function call dispatcher, for interfacing 32-bit ROM routines.
			*
			* The standard 64 (N32) calling sequence is supported, with a0
			* holding a function pointer, a1 a new stack pointer, a2-a7 -- its
			* first six arguments and the stack -- remaining ones (up to O32_ARGC,
			* including a2-a7). Static registers, gp and fp are preserved, v0 holds
			* a result. This code relies on the called o32 function for sp and ra
			* restoration and this dispatcher has to be placed in a KSEGx (or KUSEG)
			* address space. Any pointers passed have to point to addresses within
			* one of these spaces as well.
			*/
			NESTED(call_o32, O32_FRAMESZ, ra)
			REG_SUBU sp,O32_FRAMESZ

			REG_S ra,O32_FRAMESZ-1*SZREG(sp)
			REG_S fp,O32_FRAMESZ-2*SZREG(sp)
			REG_S gp,O32_FRAMESZ-3*SZREG(sp)
			REG_S s7,O32_FRAMESZ-4*SZREG(sp)
			REG_S s6,O32_FRAMESZ-5*SZREG(sp)
			REG_S s5,O32_FRAMESZ-6*SZREG(sp)
			REG_S s4,O32_FRAMESZ-7*SZREG(sp)
			REG_S s3,O32_FRAMESZ-8*SZREG(sp)
			REG_S s2,O32_FRAMESZ-9*SZREG(sp)
			REG_S s1,O32_FRAMESZ-10*SZREG(sp)
			REG_S s0,O32_FRAMESZ-11*SZREG(sp)

			move jp,a0
			REG_SUBU s0,a1,O32_FRAMESZ_NEW
			REG_S sp,O32_FRAMESZ_NEW-1*SZREG(s0)

			sll a0,a2,zero
			sll a1,a3,zero
			sll a2,a4,zero
			sll a3,a5,zero
			sw a6,0x10(s0)
			sw a7,0x14(s0)

			PTR_LA t0,O32_FRAMESZ(sp)
			PTR_LA t1,0x18(s0)
			li t2,O32_ARGC-6
			1:
			lw t3,(t0)
			REG_ADDU t0,SZREG
			sw t3,(t1)
			REG_SUBU t2,1
			REG_ADDU t1,4
			bnez t2,1b

			move sp,s0

			jalr jp

			REG_L sp,O32_FRAMESZ_NEW-1*SZREG(sp)

			REG_L s0,O32_FRAMESZ-11*SZREG(sp)
			REG_L s1,O32_FRAMESZ-10*SZREG(sp)
			REG_L s2,O32_FRAMESZ-9*SZREG(sp)
			REG_L s3,O32_FRAMESZ-8*SZREG(sp)
			REG_L s4,O32_FRAMESZ-7*SZREG(sp)
			REG_L s5,O32_FRAMESZ-6*SZREG(sp)
			REG_L s6,O32_FRAMESZ-5*SZREG(sp)
			REG_L s7,O32_FRAMESZ-4*SZREG(sp)
			REG_L gp,O32_FRAMESZ-3*SZREG(sp)
			REG_L fp,O32_FRAMESZ-2*SZREG(sp)
			REG_L ra,O32_FRAMESZ-1*SZREG(sp)

			REG_ADDU sp,O32_FRAMESZ
			jr ra
			END(call_o32)

arch/mips/fw/sni/Makefile

0 → 100644

+5 −0

Original line number	Original line	Diff line number	Diff line
			#
			# Makefile for the SNI prom monitor routines under Linux.
			#

			lib-$(CONFIG_SNIPROM) += sniprom.o