sparc: remove CONFIG_SUN4

While doing some easy cleanups on the sparc code I noticed that the
CONFIG_SUN4 code seems to be worse than the rest - there were some
"I don't know how it should work, but the current code definitely cannot
work." places.

And while I have seen people running Linux on machines like a
SPARCstation 5 a few years ago I don't recall having seen sun4
machines, even less ones running Linux.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

37 files changed, 82 insertions, 1025 deletions

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index abcd82bfcb9..a4c7fb7afc8 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -210,17 +210,6 @@ config SUN_PM
 	  Enable power management and CPU standby features on supported
 	  SPARC platforms.
 
-config SUN4
-	bool "Support for SUN4 machines (disables SUN4[CDM] support)"
-	depends on !SMP
-	default n
-	help
-	  Say Y here if, and only if, your machine is a sun4. Note that
-	  a kernel compiled with this option will run only on sun4.
-	  (And the current version will probably work only on sun4/330.)
-
-if !SUN4
-
 config PCI
 	bool "Support for PCI and PS/2 keyboard/mouse"
 	help
@@ -233,8 +222,6 @@ config PCI_SYSCALL
 
 source "drivers/pci/Kconfig"
 
-endif
-
 config SUN_OPENPROMFS
 	tristate "Openprom tree appears in /proc/openprom"
 	help
@@ -266,9 +253,7 @@ source "net/Kconfig"
 
 source "drivers/Kconfig"
 
-if !SUN4
 source "drivers/sbus/char/Kconfig"
-endif
 
 # This one must be before the filesystem configs. -DaveM
 
diff --git a/arch/sparc/include/asm/asmmacro.h b/arch/sparc/include/asm/asmmacro.h
index a619a4d97aa..a995bf8aba3 100644
--- a/arch/sparc/include/asm/asmmacro.h
+++ b/arch/sparc/include/asm/asmmacro.h
@@ -34,12 +34,7 @@
 /* sun4 probably wants half word accesses to ASI_SEGMAP, while sun4c+
    likes byte accesses. These are to avoid ifdef mania. */
 
-#ifdef CONFIG_SUN4
-#define lduXa	lduha
-#define stXa	stha
-#else
 #define lduXa	lduba
 #define stXa	stba
-#endif
 
 #endif /* !(_SPARC_ASMMACRO_H) */
diff --git a/arch/sparc/include/asm/elf_32.h b/arch/sparc/include/asm/elf_32.h
index d043f80bc2f..b7ab6054782 100644
--- a/arch/sparc/include/asm/elf_32.h
+++ b/arch/sparc/include/asm/elf_32.h
@@ -105,11 +105,8 @@ typedef struct {
 #define ELF_DATA	ELFDATA2MSB
 
 #define USE_ELF_CORE_DUMP
-#ifndef CONFIG_SUN4
+
 #define ELF_EXEC_PAGESIZE	4096
-#else
-#define ELF_EXEC_PAGESIZE	8192
-#endif
 
 
 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
@@ -126,7 +123,7 @@ typedef struct {
 /* Sun4c has none of the capabilities, most sun4m's have them all.
  * XXX This is gross, set some global variable at boot time. -DaveM
  */
-#define ELF_HWCAP	((ARCH_SUN4C_SUN4) ? 0 : \
+#define ELF_HWCAP	((ARCH_SUN4C) ? 0 : \
 			 (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | \
 			  HWCAP_SPARC_SWAP | \
 			  ((srmmu_modtype != Cypress && \
diff --git a/arch/sparc/include/asm/mostek.h b/arch/sparc/include/asm/mostek.h
index a99590c4c50..98b44dd93e4 100644
--- a/arch/sparc/include/asm/mostek.h
+++ b/arch/sparc/include/asm/mostek.h
@@ -128,44 +128,6 @@ struct mostek48t08 {
 	struct mostek48t02 regs;     /* Here is what we are interested in.   */
 };
 
-#ifdef CONFIG_SUN4
-enum sparc_clock_type {	MSTK48T02, MSTK48T08, \
-INTERSIL, MSTK_INVALID };
-#else
-enum sparc_clock_type {	MSTK48T02, MSTK48T08, \
-MSTK_INVALID };
-#endif
-
-#ifdef CONFIG_SUN4
-/* intersil on a sun 4/260 code  data from harris doc */
-struct intersil_dt {
-        volatile unsigned char int_csec;
-        volatile unsigned char int_hour;
-        volatile unsigned char int_min;
-        volatile unsigned char int_sec;
-        volatile unsigned char int_month;
-        volatile unsigned char int_day;
-        volatile unsigned char int_year;
-        volatile unsigned char int_dow;
-};
-
-struct intersil {
-	struct intersil_dt clk;
-	struct intersil_dt cmp;
-	volatile unsigned char int_intr_reg;
-	volatile unsigned char int_cmd_reg;
-};
-
-#define INTERSIL_STOP        0x0
-#define INTERSIL_START       0x8
-#define INTERSIL_INTR_DISABLE   0x0
-#define INTERSIL_INTR_ENABLE   0x10
-#define INTERSIL_32K		0x0
-#define INTERSIL_NORMAL		0x0
-#define INTERSIL_24H		0x4
-#define INTERSIL_INT_100HZ	0x2
-
-/* end of intersil info */
-#endif
+enum sparc_clock_type { MSTK48T02, MSTK48T08, MSTK_INVALID };
 
 #endif /* !(_SPARC_MOSTEK_H) */
diff --git a/arch/sparc/include/asm/oplib_32.h b/arch/sparc/include/asm/oplib_32.h
index b2631da259e..699da05235c 100644
--- a/arch/sparc/include/asm/oplib_32.h
+++ b/arch/sparc/include/asm/oplib_32.h
@@ -21,7 +21,6 @@ enum prom_major_version {
 	PROM_V2,      /* sun4c and early sun4m V2 prom */
 	PROM_V3,      /* sun4m and later, up to sun4d/sun4e machines V3 */
 	PROM_P1275,   /* IEEE compliant ISA based Sun PROM, only sun4u */
-	PROM_SUN4,    /* Old sun4 proms are totally different, but we'll shoehorn it to make it fit */
 };
 
 extern enum prom_major_version prom_vers;
diff --git a/arch/sparc/include/asm/page_32.h b/arch/sparc/include/asm/page_32.h
index cf5fb70ca1c..d1806edc095 100644
--- a/arch/sparc/include/asm/page_32.h
+++ b/arch/sparc/include/asm/page_32.h
@@ -8,11 +8,8 @@
 #ifndef _SPARC_PAGE_H
 #define _SPARC_PAGE_H
 
-#ifdef CONFIG_SUN4
-#define PAGE_SHIFT   13
-#else
 #define PAGE_SHIFT   12
-#endif
+
 #ifndef __ASSEMBLY__
 /* I have my suspicions... -DaveM */
 #define PAGE_SIZE    (1UL << PAGE_SHIFT)
diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h
index 08237fda887..e0cabe790ec 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -14,11 +14,7 @@
 #include <linux/spinlock.h>
 #include <linux/swap.h>
 #include <asm/types.h>
-#ifdef CONFIG_SUN4
-#include <asm/pgtsun4.h>
-#else
 #include <asm/pgtsun4c.h>
-#endif
 #include <asm/pgtsrmmu.h>
 #include <asm/vac-ops.h>
 #include <asm/oplib.h>
diff --git a/arch/sparc/include/asm/sun4paddr.h b/arch/sparc/include/asm/sun4paddr.h
deleted file mode 100644
index d52985f19f4..00000000000
--- a/arch/sparc/include/asm/sun4paddr.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * sun4paddr.h:  Various physical addresses on sun4 machines
- *
- * Copyright (C) 1997 Anton Blanchard (anton@progsoc.uts.edu.au)
- * Copyright (C) 1998 Chris Davis (cdavis@cois.on.ca)
- * 
- * Now supports more sun4's
- */
-
-#ifndef _SPARC_SUN4PADDR_H
-#define _SPARC_SUN4PADDR_H
-
-#define SUN4_IE_PHYSADDR		0xf5000000
-#define SUN4_UNUSED_PHYSADDR		0
-
-/* these work for me */
-#define SUN4_200_MEMREG_PHYSADDR	0xf4000000
-#define SUN4_200_CLOCK_PHYSADDR		0xf3000000
-#define SUN4_200_BWTWO_PHYSADDR		0xfd000000
-#define SUN4_200_ETH_PHYSADDR		0xf6000000
-#define SUN4_200_SI_PHYSADDR		0xff200000
-
-/* these were here before */
-#define SUN4_300_MEMREG_PHYSADDR	0xf4000000
-#define SUN4_300_CLOCK_PHYSADDR		0xf2000000
-#define SUN4_300_TIMER_PHYSADDR		0xef000000
-#define SUN4_300_ETH_PHYSADDR		0xf9000000
-#define SUN4_300_BWTWO_PHYSADDR		0xfb400000
-#define SUN4_300_DMA_PHYSADDR		0xfa001000
-#define SUN4_300_ESP_PHYSADDR		0xfa000000
-
-/* Are these right? */
-#define SUN4_400_MEMREG_PHYSADDR	0xf4000000
-#define SUN4_400_CLOCK_PHYSADDR		0xf2000000
-#define SUN4_400_TIMER_PHYSADDR		0xef000000
-#define SUN4_400_ETH_PHYSADDR		0xf9000000
-#define SUN4_400_BWTWO_PHYSADDR		0xfb400000
-#define SUN4_400_DMA_PHYSADDR		0xfa001000
-#define SUN4_400_ESP_PHYSADDR		0xfa000000
-
-/* 
-	these are the actual values set and used in the code. Unused items set 
-	to SUN_UNUSED_PHYSADDR 
- */
-
-extern int sun4_memreg_physaddr; /* memory register (ecc?) */
-extern int sun4_clock_physaddr;  /* system clock */
-extern int sun4_timer_physaddr;  /* timer, where applicable */
-extern int sun4_eth_physaddr;    /* onboard ethernet (ie/le) */
-extern int sun4_si_physaddr;     /* sun3 scsi adapter */
-extern int sun4_bwtwo_physaddr;  /* onboard bw2 */
-extern int sun4_dma_physaddr;    /* scsi dma */
-extern int sun4_esp_physaddr;    /* esp scsi */
-extern int sun4_ie_physaddr;     /* interrupt enable */
-
-#endif /* !(_SPARC_SUN4PADDR_H) */
diff --git a/arch/sparc/include/asm/sun4prom.h b/arch/sparc/include/asm/sun4prom.h
deleted file mode 100644
index 9c8b4cbf629..00000000000
--- a/arch/sparc/include/asm/sun4prom.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * sun4prom.h -- interface to sun4 PROM monitor.  We don't use most of this,
- *               so most of these are just placeholders.
- */
-
-#ifndef _SUN4PROM_H_
-#define _SUN4PROM_H_
-
-/*
- * Although this looks similar to an romvec for a OpenProm machine, it is 
- * actually closer to what was used in the Sun2 and Sun3.
- *
- * V2 entries exist only in version 2 PROMs and later, V3 in version 3 and later.
- * 
- * Many of the function prototypes are guesses.  Some are certainly wrong.
- * Use with care.
- */
-
-typedef struct {
-	char		*initSP;		/* Initial system stack ptr */
-	void		(*startmon)(void);	/* Initial PC for hardware */
-	int		*diagberr;		/* Bus err handler for diags */
-	struct linux_arguments_v0 **bootParam; /* Info for bootstrapped pgm */
- 	unsigned int	*memorysize;		/* Usable memory in bytes */
-	unsigned char	(*getchar)(void);	/* Get char from input device */ 
-	void		(*putchar)(char);	/* Put char to output device */
-	int		(*mayget)(void);	/* Maybe get char, or -1 */
-	int		(*mayput)(int);		/* Maybe put char, or -1 */
-	unsigned char	*echo;			/* Should getchar echo? */
-	unsigned char	*insource;		/* Input source selector */
-	unsigned char	*outsink;		/* Output sink selector */
-	int		(*getkey)(void);	/* Get next key if one exists */
-	void		(*initgetkey)(void);	/* Initialize get key */
-	unsigned int	*translation;		/* Kbd translation selector */
-	unsigned char	*keybid;		/* Keyboard ID byte */
-	int		*screen_x;		/* V2: Screen x pos (r/o) */
-	int		*screen_y;		/* V2: Screen y pos (r/o) */
-	struct keybuf	*keybuf;		/* Up/down keycode buffer */
-	char		*monid;			/* Monitor version ID */
-	void		(*fbwritechar)(char);	/* Write a character to FB */
-	int		*fbAddr;		/* Address of frame buffer */
-	char		**font;			/* Font table for FB */
-	void		(*fbwritestr)(char *);	/* Write string to FB */
-	void		(*reboot)(char *);	/* e.g. reboot("sd()vmlinux") */
-	unsigned char	*linebuf;		/* The line input buffer */
-	unsigned char	**lineptr;		/* Cur pointer into linebuf */
-	int		*linesize;		/* length of line in linebuf */
-	void		(*getline)(char *);	/* Get line from user */
-	unsigned char	(*getnextchar)(void);	/* Get next char from linebuf */
-	unsigned char	(*peeknextchar)(void);	/* Peek at next char */
-	int		*fbthere;		/* =1 if frame buffer there */
-	int		(*getnum)(void);	/* Grab hex num from line */
-	int		(*printf)(char *, ...);	/* See prom_printf() instead */ 
-	void		(*printhex)(int);	/* Format N digits in hex */
-	unsigned char	*leds;			/* RAM copy of LED register */
-	void		(*setLEDs)(unsigned char *);	/* Sets LED's and RAM copy */
-	void		(*NMIaddr)(void *);	/* Addr for level 7 vector */
-	void		(*abortentry)(void);	/* Entry for keyboard abort */
-	int		*nmiclock;		/* Counts up in msec */
-	int		*FBtype;		/* Frame buffer type */
- 	unsigned int	romvecversion;		/* Version number for this romvec */
-	struct globram  *globram;		/* monitor global variables ??? */
-	void *		kbdaddr;		/* Addr of keyboard in use */
-	int		*keyrinit;		/* ms before kbd repeat */
-	unsigned char	*keyrtick; 		/* ms between repetitions */
-	unsigned int	*memoryavail;		/* V1: Main mem usable size */
-	long		*resetaddr;		/* where to jump on a reset */
-	long		*resetmap;		/* pgmap entry for resetaddr */
-	void		(*exittomon)(void);	/* Exit from user program */
-	unsigned char	**memorybitmap;		/* V1: &{0 or &bits} */
-	void		(*setcxsegmap)(int ctxt, char *va, int pmeg);	/* Set seg in any context */
-	void		(**vector_cmd)(void *);	/* V2: Handler for 'v' cmd */
-	unsigned long	*expectedtrapsig;	/* V3: Location of the expected trap signal */
-	unsigned long	*trapvectorbasetable;	/* V3: Address of the trap vector table */
-	int		unused1;
-	int		unused2;
-	int		unused3;
-	int		unused4;
-} linux_sun4_romvec;
-
-extern linux_sun4_romvec *sun4_romvec;
-
-#endif /* _SUN4PROM_H_ */
diff --git a/arch/sparc/include/asm/system_32.h b/arch/sparc/include/asm/system_32.h
index b4b024445fc..4e18ef27233 100644
--- a/arch/sparc/include/asm/system_32.h
+++ b/arch/sparc/include/asm/system_32.h
@@ -34,13 +34,7 @@ enum sparc_cpu {
 
 extern enum sparc_cpu sparc_cpu_model;
 
-#ifndef CONFIG_SUN4
-#define ARCH_SUN4C_SUN4 (sparc_cpu_model==sun4c)
-#define ARCH_SUN4 0
-#else
-#define ARCH_SUN4C_SUN4 1
-#define ARCH_SUN4 1
-#endif
+#define ARCH_SUN4C (sparc_cpu_model==sun4c)
 
 #define SUN4M_NCPUS            4              /* Architectural limit of sun4m. */
 
diff --git a/arch/sparc/include/asm/system_64.h b/arch/sparc/include/asm/system_64.h
index db9e742a406..98acb3b9d4a 100644
--- a/arch/sparc/include/asm/system_64.h
+++ b/arch/sparc/include/asm/system_64.h
@@ -26,9 +26,8 @@ enum sparc_cpu {
 
 #define sparc_cpu_model sun4u
 
-/* This cannot ever be a sun4c nor sun4 :) That's just history. */
-#define ARCH_SUN4C_SUN4 0
-#define ARCH_SUN4 0
+/* This cannot ever be a sun4c :) That's just history. */
+#define ARCH_SUN4C 0
 
 extern char reboot_command[];
 
diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h
index cbb892d0dff..29899fd5b1b 100644
--- a/arch/sparc/include/asm/thread_info_32.h
+++ b/arch/sparc/include/asm/thread_info_32.h
@@ -80,11 +80,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
 /*
  * thread information allocation
  */
-#if PAGE_SHIFT == 13
-#define THREAD_INFO_ORDER  0
-#else /* PAGE_SHIFT */
 #define THREAD_INFO_ORDER  1
-#endif
 
 #define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
 
diff --git a/arch/sparc/include/asm/timer_32.h b/arch/sparc/include/asm/timer_32.h
index 361e53898dd..adab3def007 100644
--- a/arch/sparc/include/asm/timer_32.h
+++ b/arch/sparc/include/asm/timer_32.h
@@ -9,7 +9,6 @@
 #define _SPARC_TIMER_H
 
 #include <asm/system.h>  /* For SUN4M_NCPUS */
-#include <asm/sun4paddr.h>
 #include <asm/btfixup.h>
 
 /* Timer structures. The interrupt timer has two properties which
@@ -34,12 +33,7 @@ struct sun4c_timer_info {
   __volatile__ unsigned int timer_limit14;
 };
 
-#define SUN4C_TIMER_PHYSADDR   0xf3000000
-#ifdef CONFIG_SUN4
-#define SUN_TIMER_PHYSADDR SUN4_300_TIMER_PHYSADDR
-#else
-#define SUN_TIMER_PHYSADDR SUN4C_TIMER_PHYSADDR
-#endif
+#define SUN_TIMER_PHYSADDR   0xf3000000
 
 /* A sun4m has two blocks of registers which are probably of the same
  * structure. LSI Logic's L64851 is told to _decrement_ from the limit
diff --git a/arch/sparc/include/asm/vac-ops.h b/arch/sparc/include/asm/vac-ops.h
index d10527611f1..a63e88ef042 100644
--- a/arch/sparc/include/asm/vac-ops.h
+++ b/arch/sparc/include/asm/vac-ops.h
@@ -76,11 +76,7 @@
  * cacheable bit in the pte's of all such pages.
  */
 
-#ifdef CONFIG_SUN4
-#define S4CVAC_BADBITS     0x0001e000
-#else
 #define S4CVAC_BADBITS    0x0000f000
-#endif
 
 /* The following is true if vaddr1 and vaddr2 would cause
  * a 'bad alias'.
@@ -94,10 +90,7 @@
  */
 struct sun4c_vac_props {
 	unsigned int num_bytes;     /* Size of the cache */
-	unsigned int num_lines;     /* Number of cache lines */
 	unsigned int do_hwflushes;  /* Hardware flushing available? */
-	enum { VAC_NONE, VAC_WRITE_THROUGH,
-	    VAC_WRITE_BACK } type;  /* What type of VAC? */
 	unsigned int linesize;      /* Size of each line in bytes */
 	unsigned int log2lsize;     /* log2(linesize) */
 	unsigned int on;            /* VAC is enabled */
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index a430231647e..2d658209509 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -18,7 +18,6 @@ obj-y    := entry.o wof.o wuf.o etrap.o rtrap.o traps.o $(IRQ_OBJS) \
 devres-y = ../../../kernel/irq/devres.o
 
 obj-$(CONFIG_PCI) += pcic.o
-obj-$(CONFIG_SUN4) += sun4setup.o
 obj-$(CONFIG_SMP) += trampoline.o smp.o sun4m_smp.o sun4d_smp.o
 obj-$(CONFIG_SUN_AUXIO) += auxio.o
 obj-$(CONFIG_SUN_PM) += apc.o pmc.o
diff --git a/arch/sparc/kernel/devices.c b/arch/sparc/kernel/devices.c
index b240b8863fd..ad656b044b8 100644
--- a/arch/sparc/kernel/devices.c
+++ b/arch/sparc/kernel/devices.c
@@ -143,7 +143,7 @@ void __init device_scan(void)
 #endif
 	clock_stop_probe();
 
-	if (ARCH_SUN4C_SUN4)
+	if (ARCH_SUN4C)
 		sun4c_probe_memerr_reg();
 
 	return;
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index e8cdf715a54..68689facaaa 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -20,11 +20,7 @@
 #include <asm/memreg.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
-#ifdef CONFIG_SUN4
-#include <asm/pgtsun4.h>
-#else
 #include <asm/pgtsun4c.h>
-#endif
 #include <asm/winmacro.h>
 #include <asm/signal.h>
 #include <asm/obio.h>
@@ -775,11 +771,7 @@ vac_linesize_patch_32:		subcc	%l7, 32, %l7
  * Ugly, but we cant use hardware flushing on the sun4 and we'd require
  * two instructions (Anton)
  */
-#ifdef CONFIG_SUN4
-vac_hwflush_patch1_on:		nop
-#else
 vac_hwflush_patch1_on:		addcc	%l7, -PAGE_SIZE, %l7
-#endif
 
 vac_hwflush_patch2_on:		sta	%g0, [%l3 + %l7] ASI_HWFLUSHSEG
 
@@ -798,42 +790,10 @@ vac_hwflush_patch2_on:		sta	%g0, [%l3 + %l7] ASI_HWFLUSHSEG
 ! %l7 = 1 for textfault
 ! We want error in %l5, vaddr in %l6
 sun4c_fault:
-#ifdef CONFIG_SUN4
-	sethi	%hi(sun4c_memerr_reg), %l4
-	ld	[%l4+%lo(sun4c_memerr_reg)], %l4  ! memerr ctrl reg addr
-	ld	[%l4], %l6		! memerr ctrl reg
-	ld	[%l4 + 4], %l5		! memerr vaddr reg
-	andcc	%l6, 0x80, %g0		! check for error type
-	st	%g0, [%l4 + 4]		! clear the error
-	be	0f			! normal error
-	 sethi	%hi(AC_BUS_ERROR), %l4	! bus err reg addr
-
-	call	prom_halt	! something weird happened
-					! what exactly did happen?
-					! what should we do here?
-
-0:	or	%l4, %lo(AC_BUS_ERROR), %l4	! bus err reg addr
-	lduba	[%l4] ASI_CONTROL, %l6	! bus err reg
-
-	cmp    %l7, 1			! text fault?
-	be	1f			! yes
-	 nop
-
-	ld     [%l1], %l4		! load instruction that caused fault
-	srl	%l4, 21, %l4
-	andcc	%l4, 1, %g0		! store instruction?
-
-	be	1f			! no
-	 sethi	%hi(SUN4C_SYNC_BADWRITE), %l4 ! yep
-					! %lo(SUN4C_SYNC_BADWRITE) = 0
-	or	%l4, %l6, %l6		! set write bit to emulate sun4c
-1:
-#else
 	sethi	%hi(AC_SYNC_ERR), %l4
 	add	%l4, 0x4, %l6			! AC_SYNC_VA in %l6
 	lda	[%l6] ASI_CONTROL, %l5		! Address
 	lda	[%l4] ASI_CONTROL, %l6		! Error, retained for a bit
-#endif
 
 	andn	%l5, 0xfff, %l5			! Encode all info into l7
 	srl	%l6, 14, %l4
@@ -880,12 +840,7 @@ sun4c_fault:
 	or      %l4, %lo(swapper_pg_dir), %l4
 	sll     %l6, 2, %l6
 	ld      [%l4 + %l6], %l4
-#ifdef CONFIG_SUN4
-	sethi	%hi(PAGE_MASK), %l6
-	andcc	%l4, %l6, %g0
-#else
 	andcc   %l4, PAGE_MASK, %g0
-#endif
 	be      sun4c_fault_fromuser
 	 lduXa  [%l5] ASI_SEGMAP, %l4
 
@@ -937,11 +892,7 @@ invalid_segment_patch1:
 	ld	[%l6 + 0x08], %l3	! tmp = entry->vaddr
 
 	! Flush segment from the cache.
-#ifdef CONFIG_SUN4
-	sethi	%hi((128 * 1024)), %l7
-#else
 	sethi	%hi((64 * 1024)), %l7
-#endif
 9:
 vac_hwflush_patch1:
 vac_linesize_patch:
@@ -1029,12 +980,7 @@ invalid_segment_patch2:
 	or	%l4, %lo(swapper_pg_dir), %l4
 	sll	%l3, 2, %l3
 	ld	[%l4 + %l3], %l4
-#ifndef CONFIG_SUN4
 	and	%l4, PAGE_MASK, %l4
-#else
-	sethi	%hi(PAGE_MASK), %l6
-	and	%l4, %l6, %l4
-#endif
 
 	srl	%l5, (PAGE_SHIFT - 2), %l6
 	and	%l6, ((SUN4C_PTRS_PER_PTE - 1) << 2), %l6
diff --git a/arch/sparc/kernel/head.S b/arch/sparc/kernel/head.S
index 50d9a16af79..2d325fd8457 100644
--- a/arch/sparc/kernel/head.S
+++ b/arch/sparc/kernel/head.S
@@ -63,15 +63,9 @@ cputypvar_sun4m:
 
 	.align 4
 
-#ifndef CONFIG_SUN4
 sun4_notsup:
-	.asciz	"Sparc-Linux sun4 needs a specially compiled kernel, turn CONFIG_SUN4 on.\n\n"
+	.asciz	"Sparc-Linux sun4 support does no longer exist.\n\n"
 	.align 4
-#else
-sun4cdm_notsup:
-	.asciz	"Kernel compiled with CONFIG_SUN4 cannot run on SUN4C/SUN4M/SUN4D\nTurn CONFIG_SUN4 off.\n\n"
-	.align 4
-#endif
 
 sun4e_notsup:
         .asciz  "Sparc-Linux sun4e support does not exist\n\n"
@@ -780,15 +774,6 @@ execute_in_high_mem:
 		 nop
 
 found_version:
-#ifdef CONFIG_SUN4
-/* For people who try sun4 kernels, even if Configure.help advises them. */
-		ld	[%g7 + 0x68], %o1
-		set	sun4cdm_notsup, %o0
-		call	%o1
-		 nop
-		b	halt_me
-		 nop
-#endif
 /* Get the machine type via the mysterious romvec node operations. */
 
 		add	%g7, 0x1c, %l1		
@@ -1150,15 +1135,6 @@ sun4c_continue_boot:
 		 nop
 
 sun4_init:
-#ifdef CONFIG_SUN4
-/* There, happy now Adrian? */
-		set	cputypval, %o2		! Let everyone know we
-		set	' ', %o0			! are a "sun4 " architecture
-		stb	%o0, [%o2 + 0x4]		
-
-		b got_prop 
-		 nop
-#else
 		sethi   %hi(SUN4_PROM_VECTOR+0x84), %o1
 		ld      [%o1 + %lo(SUN4_PROM_VECTOR+0x84)], %o1
 		set     sun4_notsup, %o0
@@ -1170,7 +1146,7 @@ sun4_init:
 		 nop
 1:		ba      1b                      ! Cannot exit into KMON
 		 nop
-#endif
+
 no_sun4e_here:
 		ld	[%g7 + 0x68], %o1
 		set	sun4e_notsup, %o0
diff --git a/arch/sparc/kernel/idprom.c b/arch/sparc/kernel/idprom.c
index fc511f3c4c1..223a6582e1e 100644
--- a/arch/sparc/kernel/idprom.c
+++ b/arch/sparc/kernel/idprom.c
@@ -12,10 +12,6 @@
 #include <asm/oplib.h>
 #include <asm/idprom.h>
 #include <asm/machines.h>  /* Fun with Sun released architectures. */
-#ifdef CONFIG_SUN4
-#include <asm/sun4paddr.h>
-extern void sun4setup(void);
-#endif
 
 struct idprom *idprom;
 static struct idprom idprom_buffer;
@@ -101,7 +97,4 @@ void __init idprom_init(void)
 		    idprom->id_ethaddr[0], idprom->id_ethaddr[1],
 		    idprom->id_ethaddr[2], idprom->id_ethaddr[3],
 		    idprom->id_ethaddr[4], idprom->id_ethaddr[5]);
-#ifdef CONFIG_SUN4
-	sun4setup();
-#endif
 }
diff --git a/arch/sparc/kernel/process.c b/arch/sparc/kernel/process.c
index 4bb430940a6..e8c43ffe317 100644
--- a/arch/sparc/kernel/process.c
+++ b/arch/sparc/kernel/process.c
@@ -75,7 +75,7 @@ void cpu_idle(void)
 {
 	/* endless idle loop with no priority at all */
 	for (;;) {
-		if (ARCH_SUN4C_SUN4) {
+		if (ARCH_SUN4C) {
 			static int count = HZ;
 			static unsigned long last_jiffies;
 			static unsigned long last_faults;
diff --git a/arch/sparc/kernel/prom.c b/arch/sparc/kernel/prom.c
index 43e86240682..eee5efcfe50 100644
--- a/arch/sparc/kernel/prom.c
+++ b/arch/sparc/kernel/prom.c
@@ -442,7 +442,6 @@ static void __init of_console_init(void)
 
 	switch (prom_vers) {
 	case PROM_V0:
-	case PROM_SUN4:
 		skip = 0;
 		switch (*romvec->pv_stdout) {
 		case PROMDEV_SCREEN:
diff --git a/arch/sparc/kernel/setup.c b/arch/sparc/kernel/setup.c
index 9e451b21202..8d5fbce1635 100644
--- a/arch/sparc/kernel/setup.c
+++ b/arch/sparc/kernel/setup.c
@@ -224,12 +224,6 @@ void __init setup_arch(char **cmdline_p)
 	if(!strcmp(&cputypval,"sun4e")) { sparc_cpu_model=sun4e; }
 	if(!strcmp(&cputypval,"sun4u")) { sparc_cpu_model=sun4u; }
 
-#ifdef CONFIG_SUN4
-	if (sparc_cpu_model != sun4) {
-		prom_printf("This kernel is for Sun4 architecture only.\n");
-		prom_halt();
-	}
-#endif
 	printk("ARCH: ");
 	switch(sparc_cpu_model) {
 	case sun4:
@@ -263,7 +257,7 @@ void __init setup_arch(char **cmdline_p)
 	boot_flags_init(*cmdline_p);
 
 	idprom_init();
-	if (ARCH_SUN4C_SUN4)
+	if (ARCH_SUN4C)
 		sun4c_probe_vac();
 	load_mmu();
 
diff --git a/arch/sparc/kernel/sun4c_irq.c b/arch/sparc/kernel/sun4c_irq.c
index a74582455cc..722d2516f28 100644
--- a/arch/sparc/kernel/sun4c_irq.c
+++ b/arch/sparc/kernel/sun4c_irq.c
@@ -33,7 +33,6 @@
 #include <asm/traps.h>
 #include <asm/irq.h>
 #include <asm/io.h>
-#include <asm/sun4paddr.h>
 #include <asm/idprom.h>
 #include <asm/machines.h>
 
@@ -130,22 +129,10 @@ static void sun4c_enable_irq(unsigned int irq_nr)
 
 volatile struct sun4c_timer_info *sun4c_timers;
 
-#ifdef CONFIG_SUN4
-/* This is an ugly hack to work around the
-   current timer code, and make it work with 
-   the sun4/260 intersil 
-