mn10300: add the MN10300/AM33 architecture to the kernel

Add architecture support for the MN10300/AM33 CPUs produced by MEI to the
kernel.

This patch also adds board support for the ASB2303 with the ASB2308 daughter
board, and the ASB2305.  The only processor supported is the MN103E010, which
is an AM33v2 core plus on-chip devices.

[akpm@linux-foundation.org: nuke cvs control strings]
Signed-off-by: Masakazu Urade <urade.masakazu@jp.panasonic.com>
Signed-off-by: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 147 insertions, 0 deletions

diff --git a/include/asm-mn10300/elf.h b/include/asm-mn10300/elf.h
new file mode 100644
index 000000000000..256a70466ca4
--- /dev/null
+++ b/include/asm-mn10300/elf.h
@@ -0,0 +1,147 @@
+/* MN10300 ELF constant and register definitions
+ *
+ * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef _ASM_ELF_H
+#define _ASM_ELF_H
+
+#include <linux/utsname.h>
+#include <asm/ptrace.h>
+#include <asm/user.h>
+
+/*
+ * AM33 relocations
+ */
+#define R_MN10300_NONE		0	/* No reloc.  */
+#define R_MN10300_32		1	/* Direct 32 bit.  */
+#define R_MN10300_16		2	/* Direct 16 bit.  */
+#define R_MN10300_8		3	/* Direct 8 bit.  */
+#define R_MN10300_PCREL32	4	/* PC-relative 32-bit.  */
+#define R_MN10300_PCREL16	5	/* PC-relative 16-bit signed.  */
+#define R_MN10300_PCREL8	6	/* PC-relative 8-bit signed.  */
+#define R_MN10300_24		9	/* Direct 24 bit.  */
+#define R_MN10300_RELATIVE	23	/* Adjust by program base.  */
+
+/*
+ * ELF register definitions..
+ */
+typedef unsigned long elf_greg_t;
+
+#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+#define ELF_NFPREG 32
+typedef float elf_fpreg_t;
+
+typedef struct {
+	elf_fpreg_t	fpregs[ELF_NFPREG];
+	u_int32_t	fpcr;
+} elf_fpregset_t;
+
+extern int dump_fpu(struct pt_regs *, elf_fpregset_t *);
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture
+ */
+#define elf_check_arch(x) \
+	(((x)->e_machine == EM_CYGNUS_MN10300) ||	\
+	 ((x)->e_machine == EM_MN10300))
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS	ELFCLASS32
+#define ELF_DATA	ELFDATA2LSB
+#define ELF_ARCH	EM_MN10300
+
+/*
+ * ELF process initialiser
+ */
+#define ELF_PLAT_INIT(_r, load_addr)					\
+do {									\
+	struct pt_regs *_ur = current->thread.uregs;			\
+	_ur->a3   = 0;	_ur->a2   = 0;	_ur->d3   = 0;	_ur->d2   = 0;	\
+	_ur->mcvf = 0;	_ur->mcrl = 0;	_ur->mcrh = 0;	_ur->mdrq = 0;	\
+	_ur->e1   = 0;	_ur->e0   = 0;	_ur->e7   = 0;	_ur->e6   = 0;	\
+	_ur->e5   = 0;	_ur->e4   = 0;	_ur->e3   = 0;	_ur->e2   = 0;	\
+	_ur->lar  = 0;	_ur->lir  = 0;	_ur->mdr  = 0;			\
+	_ur->a1   = 0;	_ur->a0   = 0;	_ur->d1   = 0;	_ur->d0   = 0;	\
+} while (0)
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE	4096
+
+/*
+ * This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+ * use of this is to invoke "./ld.so someprog" to test out a new version of
+ * the loader.  We need to make sure that it is out of the way of the program
+ * that it will "exec", and that there is sufficient room for the brk.
+ * - must clear the VMALLOC area
+ */
+#define ELF_ET_DYN_BASE         0x04000000
+
+/*
+ * regs is struct pt_regs, pr_reg is elf_gregset_t (which is
+ * now struct user_regs, they are different)
+ * - ELF_CORE_COPY_REGS has been guessed, and may be wrong
+ */
+#define ELF_CORE_COPY_REGS(pr_reg, regs)	\
+do {						\
+	pr_reg[0]	= regs->a3;		\
+	pr_reg[1]	= regs->a2;		\
+	pr_reg[2]	= regs->d3;		\
+	pr_reg[3]	= regs->d2;		\
+	pr_reg[4]	= regs->mcvf;		\
+	pr_reg[5]	= regs->mcrl;		\
+	pr_reg[6]	= regs->mcrh;		\
+	pr_reg[7]	= regs->mdrq;		\
+	pr_reg[8]	= regs->e1;		\
+	pr_reg[9]	= regs->e0;		\
+	pr_reg[10]	= regs->e7;		\
+	pr_reg[11]	= regs->e6;		\
+	pr_reg[12]	= regs->e5;		\
+	pr_reg[13]	= regs->e4;		\
+	pr_reg[14]	= regs->e3;		\
+	pr_reg[15]	= regs->e2;		\
+	pr_reg[16]	= regs->sp;		\
+	pr_reg[17]	= regs->lar;		\
+	pr_reg[18]	= regs->lir;		\
+	pr_reg[19]	= regs->mdr;		\
+	pr_reg[20]	= regs->a1;		\
+	pr_reg[21]	= regs->a0;		\
+	pr_reg[22]	= regs->d1;		\
+	pr_reg[23]	= regs->d0;		\
+	pr_reg[24]	= regs->orig_d0;	\
+	pr_reg[25]	= regs->epsw;		\
+	pr_reg[26]	= regs->pc;		\
+} while (0);
+
+/*
+ * This yields a mask that user programs can use to figure out what
+ * instruction set this CPU supports.  This could be done in user space,
+ * but it's not easy, and we've already done it here.
+ */
+#define ELF_HWCAP	(0)
+
+/*
+ * This yields a string that ld.so will use to load implementation
+ * specific libraries for optimization.  This is more specific in
+ * intent than poking at uname or /proc/cpuinfo.
+ *
+ * For the moment, we have only optimizations for the Intel generations,
+ * but that could change...
+ */
+#define ELF_PLATFORM  (NULL)
+
+#ifdef __KERNEL__
+#define SET_PERSONALITY(ex, ibcs2) set_personality(PER_LINUX)
+#endif
+
+#endif /* _ASM_ELF_H */