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>

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
 

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) */

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 && \

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) */

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;

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)

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>

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. */
 

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[];
 

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
 

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

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 */

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

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;