sh: Rip out special unknown machvec.

This kills off the BareCPU board as a "special" machvec, rather,
we leave this as a default for when no other vector is available,
or when we want to use it in combination with other vectors for
testing with generic ops. As sh_mv is copied out anyways (or
overloaded when an alternate vector is explicitly selected), this
doesn't consume any additional memory.

The generic machvec can be forcibly selected with sh_mv=generic,
or by not having any other boards enabled.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/Kconfig

@@ -381,18 +381,6 @@ config SH_LBOX_RE2
 	help
 	  Select L-BOX RE2 if configuring for the NTT COMWARE L-BOX RE2.
 
-config SH_UNKNOWN
-	bool "BareCPU"
-	help
-	  "Bare CPU" aka "unknown" means an SH-based system which is not one
-	  of the specific ones mentioned above, which means you need to enter
-	  all sorts of stuff like CONFIG_MEMORY_START because the config
-	  system doesn't already know what it is.  You get a machine vector
-	  without any platform-specific code in it, so things like the RTC may
-	  not work.
-
-	  This option is for the early stages of porting to a new machine.
-
 endmenu
 
 source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
@@ -401,7 +389,7 @@ source "arch/sh/boards/renesas/r7780rp/Kconfig"
 
 config CF_ENABLER
 	bool "Compact Flash Enabler support"
-	depends on SH_SOLUTION_ENGINE || SH_UNKNOWN || SH_SH03
+	depends on SH_SOLUTION_ENGINE || SH_SH03
 	---help---
 	  Compact Flash is a small, removable mass storage device introduced
 	  in 1994 originally as a PCMCIA device.  If you say `Y' here, you

arch/sh/Makefile

@@ -113,7 +113,6 @@ machdir-$(CONFIG_SH_SHMIN)			+= shmin
 machdir-$(CONFIG_SH_7206_SOLUTION_ENGINE)	+= se/7206
 machdir-$(CONFIG_SH_7619_SOLUTION_ENGINE)	+= se/7619
 machdir-$(CONFIG_SH_LBOX_RE2)			+= lboxre2
-machdir-$(CONFIG_SH_UNKNOWN)			+= unknown
 
 incdir-y	:= $(notdir $(machdir-y))
 

arch/sh/boards/unknown/Makefile

-#
-# Makefile for unknown SH boards 
-#
-
-obj-y	 := setup.o
-

arch/sh/boards/unknown/setup.c

-/*
- * linux/arch/sh/boards/unknown/setup.c
- *
- * Copyright (C) 2002 Paul Mundt
- *
- * May be copied or modified under the terms of the GNU General Public
- * License.  See linux/COPYING for more information.
- *
- * Setup code for an unknown machine (internal peripherals only)
- *
- * This is the simplest of all boards, and serves only as a quick and dirty
- * method to start debugging a new board during bring-up until proper board
- * setup code is written.
- */
-#include <linux/init.h>
-#include <asm/machvec.h>
-
-static struct sh_machine_vector mv_unknown __initmv = {
-	.mv_name		= "Unknown",
-};

arch/sh/kernel/cf-enabler.c

@@ -75,11 +75,7 @@ static int __init cf_init_default(void)
 #if defined(CONFIG_CPU_SH4)
 	allocate_cf_area();
 #endif
-#if defined(CONFIG_SH_UNKNOWN)
-	/* This should be done in each board's init_xxx_irq. */
-	make_imask_irq(14);
-	disable_irq(14);
-#endif
+
 	return 0;
 }
 

arch/sh/kernel/machvec.c

@@ -35,6 +35,8 @@ static struct sh_machine_vector * __init get_mv_byname(const char *name)
 	return NULL;
 }
 
+static unsigned int __initdata machvec_selected;
+
 static int __init early_parse_mv(char *from)
 {
 	char mv_name[MV_NAME_SIZE] = "";
@@ -55,9 +57,15 @@ static int __init early_parse_mv(char *from)
 	mv_name[mv_len] = '\0';
 	from = mv_end;
 
+	machvec_selected = 1;
+
+	/* Boot with the generic vector */
+	if (strcmp(mv_name, "generic") == 0)
+		return 0;
+
 	mvp = get_mv_byname(mv_name);
 	if (unlikely(!mvp)) {
-		printk("Available vectors:\n\n\t");
+		printk("Available vectors:\n\n\t'%s', ", sh_mv.mv_name);
 		for_each_mv(mvp)
 			printk("'%s', ", mvp->mv_name);
 		printk("\n\n");
@@ -76,7 +84,7 @@ void __init sh_mv_setup(void)
 	 * Only overload the machvec if one hasn't been selected on
 	 * the command line with sh_mv=
 	 */
-	if (strcmp(sh_mv.mv_name, "Unknown") != 0) {
+	if (!machvec_selected) {
 		unsigned long machvec_size;
 
 		machvec_size = ((unsigned long)&__machvec_end -

arch/sh/kernel/setup.c

@@ -47,7 +47,7 @@ struct sh_cpuinfo boot_cpu_data = { CPU_SH_NONE, 10000000, };
  * The machine vector. First entry in .machvec.init, or clobbered by
  * sh_mv= on the command line, prior to .machvec.init teardown.
  */
-struct sh_machine_vector sh_mv = { .mv_name = "Unknown", };
+struct sh_machine_vector sh_mv = { .mv_name = "generic", };
 
 #ifdef CONFIG_VT
 struct screen_info screen_info;