Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  CHAR: Delete old and now unused M48T35 RTC driver for SGI IP27.
  CHAR: Delete old and now unused DS1286 driver.
  MIPS: Sort out CPU type to name translation.
  MIPS: Use the new byteorder headers
  MIPS: Probe for watch registers on cores of all vendors, not just MTI.
  MIPS: Switch FPU emulator trap to BREAK instruction.
  MIPS: SMP: Do not initialize __cpu_number_map/__cpu_logical_map for CPU 0.
  MIPS: Consider value of c0_ebase when computing value of exception base.
  MIPS: Clean up MIPSxx-optimized bitop functions
  MIPS: New feature test macro cpu_has_mips_r
  MIPS: RBTX4927: Add GPIO-LED support
  MIPS: TXx9: Fix RBTX4939 ethernet address initialization

arch/mips/Kconfig

@@ -327,7 +327,6 @@ config SGI_IP22
 	select IP22_CPU_SCACHE
 	select IRQ_CPU
 	select GENERIC_ISA_DMA_SUPPORT_BROKEN
-	select SGI_HAS_DS1286
 	select SGI_HAS_I8042
 	select SGI_HAS_INDYDOG
 	select SGI_HAS_HAL2
@@ -382,7 +381,6 @@ config SGI_IP28
 	select HW_HAS_EISA
 	select I8253
 	select I8259
-	select SGI_HAS_DS1286
 	select SGI_HAS_I8042
 	select SGI_HAS_INDYDOG
 	select SGI_HAS_HAL2
@@ -893,9 +891,6 @@ config EMMA2RH
 config SERIAL_RM9000
 	bool
 
-config SGI_HAS_DS1286
-	bool
-
 config SGI_HAS_INDYDOG
 	bool
 

arch/mips/configs/ip22_defconfig

@@ -771,7 +771,6 @@ CONFIG_WATCHDOG=y
 CONFIG_INDYDOG=m
 # CONFIG_HW_RANDOM is not set
 # CONFIG_RTC is not set
-CONFIG_SGI_DS1286=m
 # CONFIG_R3964 is not set
 CONFIG_RAW_DRIVER=m
 CONFIG_MAX_RAW_DEVS=256

arch/mips/configs/ip27_defconfig

@@ -701,7 +701,6 @@ CONFIG_LEGACY_PTY_COUNT=256
 # CONFIG_WATCHDOG is not set
 CONFIG_HW_RANDOM=m
 # CONFIG_RTC is not set
-CONFIG_SGI_IP27_RTC=y
 # CONFIG_R3964 is not set
 # CONFIG_APPLICOM is not set
 # CONFIG_DRM is not set

arch/mips/configs/ip28_defconfig

@@ -70,7 +70,6 @@ CONFIG_CPU_BIG_ENDIAN=y
 CONFIG_SYS_SUPPORTS_BIG_ENDIAN=y
 CONFIG_IRQ_CPU=y
 CONFIG_SWAP_IO_SPACE=y
-CONFIG_SGI_HAS_DS1286=y
 CONFIG_SGI_HAS_INDYDOG=y
 CONFIG_SGI_HAS_SEEQ=y
 CONFIG_SGI_HAS_WD93=y
@@ -585,7 +584,6 @@ CONFIG_LEGACY_PTY_COUNT=256
 # CONFIG_IPMI_HANDLER is not set
 # CONFIG_HW_RANDOM is not set
 # CONFIG_RTC is not set
-CONFIG_SGI_DS1286=y
 # CONFIG_DTLK is not set
 # CONFIG_R3964 is not set
 # CONFIG_RAW_DRIVER is not set

arch/mips/include/asm/bitops.h

@@ -558,39 +558,67 @@ static inline void __clear_bit_unlock(unsigned long nr, volatile unsigned long *
 	__clear_bit(nr, addr);
 }
 
-#if defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64)
-
 /*
  * Return the bit position (0..63) of the most significant 1 bit in a word
  * Returns -1 if no 1 bit exists
  */
-static inline unsigned long __fls(unsigned long x)
+static inline unsigned long __fls(unsigned long word)
 {
-	int lz;
+	int num;
 
-	if (sizeof(x) == 4) {
+	if (BITS_PER_LONG == 32 &&
+	    __builtin_constant_p(cpu_has_mips_r) && cpu_has_mips_r) {
 		__asm__(
 		"	.set	push					\n"
 		"	.set	mips32					\n"
 		"	clz	%0, %1					\n"
 		"	.set	pop					\n"
-		: "=r" (lz)
-		: "r" (x));
+		: "=r" (num)
+		: "r" (word));
 
-		return 31 - lz;
+		return 31 - num;
 	}
 
-	BUG_ON(sizeof(x) != 8);
+	if (BITS_PER_LONG == 64 &&
+	    __builtin_constant_p(cpu_has_mips64) && cpu_has_mips64) {
+		__asm__(
+		"	.set	push					\n"
+		"	.set	mips64					\n"
+		"	dclz	%0, %1					\n"
+		"	.set	pop					\n"
+		: "=r" (num)
+		: "r" (word));
 
-	__asm__(
-	"	.set	push						\n"
-	"	.set	mips64						\n"
-	"	dclz	%0, %1						\n"
-	"	.set	pop						\n"
-	: "=r" (lz)
-	: "r" (x));
+		return 63 - num;
+	}
+
+	num = BITS_PER_LONG - 1;
 
-	return 63 - lz;
+#if BITS_PER_LONG == 64
+	if (!(word & (~0ul << 32))) {
+		num -= 32;
+		word <<= 32;
+	}
+#endif
+	if (!(word & (~0ul << (BITS_PER_LONG-16)))) {
+		num -= 16;
+		word <<= 16;
+	}
+	if (!(word & (~0ul << (BITS_PER_LONG-8)))) {
+		num -= 8;
+		word <<= 8;
+	}
+	if (!(word & (~0ul << (BITS_PER_LONG-4)))) {
+		num -= 4;
+		word <<= 4;
+	}
+	if (!(word & (~0ul << (BITS_PER_LONG-2)))) {
+		num -= 2;
+		word <<= 2;
+	}
+	if (!(word & (~0ul << (BITS_PER_LONG-1))))
+		num -= 1;
+	return num;
 }
 
 /*
@@ -612,23 +640,43 @@ static inline unsigned long __ffs(unsigned long word)
  * This is defined the same way as ffs.
  * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
  */
-static inline int fls(int word)
+static inline int fls(int x)
 {
-	__asm__("clz %0, %1" : "=r" (word) : "r" (word));
+	int r;
 
-	return 32 - word;
-}
+	if (__builtin_constant_p(cpu_has_mips_r) && cpu_has_mips_r) {
+		__asm__("clz %0, %1" : "=r" (x) : "r" (x));
 
-#if defined(CONFIG_64BIT) && defined(CONFIG_CPU_MIPS64)
-static inline int fls64(__u64 word)
-{
-	__asm__("dclz %0, %1" : "=r" (word) : "r" (word));
+		return 32 - x;
+	}
 
-	return 64 - word;
+	r = 32;
+	if (!x)
+		return 0;
+	if (!(x & 0xffff0000u)) {
+		x <<= 16;
+		r -= 16;
+	}
+	if (!(x & 0xff000000u)) {
+		x <<= 8;
+		r -= 8;
+	}
+	if (!(x & 0xf0000000u)) {
+		x <<= 4;
+		r -= 4;
+	}
+	if (!(x & 0xc0000000u)) {
+		x <<= 2;
+		r -= 2;
+	}
+	if (!(x & 0x80000000u)) {
+		x <<= 1;
+		r -= 1;
+	}
+	return r;
 }
-#else
+
 #include <asm-generic/bitops/fls64.h>
-#endif
 
 /*
  * ffs - find first bit set.
@@ -646,16 +694,6 @@ static inline int ffs(int word)
 	return fls(word & -word);
 }
 
-#else
-
-#include <asm-generic/bitops/__ffs.h>
-#include <asm-generic/bitops/__fls.h>
-#include <asm-generic/bitops/ffs.h>
-#include <asm-generic/bitops/fls.h>
-#include <asm-generic/bitops/fls64.h>
-
-#endif /*defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64) */
-
 #include <asm-generic/bitops/ffz.h>
 #include <asm-generic/bitops/find.h>
 

arch/mips/include/asm/break.h

@@ -29,6 +29,7 @@
 #define _BRK_THREADBP	11	/* For threads, user bp (used by debuggers) */
 #define BRK_BUG		512	/* Used by BUG() */
 #define BRK_KDB		513	/* Used in KDB_ENTER() */
+#define BRK_MEMU	514	/* Used by FPU emulator */
 #define BRK_MULOVF	1023	/* Multiply overflow */
 
 #endif /* __ASM_BREAK_H */

arch/mips/include/asm/byteorder.h

@@ -11,11 +11,19 @@
 #include <linux/compiler.h>
 #include <asm/types.h>
 
-#ifdef __GNUC__
+#if defined(__MIPSEB__)
+# define __BIG_ENDIAN
+#elif defined(__MIPSEL__)
+# define __LITTLE_ENDIAN
+#else
+# error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
+#endif
+
+#define __SWAB_64_THRU_32__
 
 #ifdef CONFIG_CPU_MIPSR2
 
-static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
+static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
 {
 	__asm__(
 	"	wsbh	%0, %1			\n"
@@ -24,9 +32,9 @@ static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
 
 	return x;
 }
-#define __arch__swab16(x)	___arch__swab16(x)
+#define __arch_swab16 __arch_swab16
 
-static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
+static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
 {
 	__asm__(
 	"	wsbh	%0, %1			\n"
@@ -36,11 +44,10 @@ static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
 
 	return x;
 }
-#define __arch__swab32(x)	___arch__swab32(x)
+#define __arch_swab32 __arch_swab32
 
 #ifdef CONFIG_CPU_MIPS64_R2
-
-static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
+static inline __attribute_const__ __u64 __arch_swab64(__u64 x)
 {
 	__asm__(
 	"	dsbh	%0, %1			\n"
@@ -51,26 +58,11 @@ static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
 
 	return x;
 }
-
-#define __arch__swab64(x)	___arch__swab64(x)
-
+#define __arch_swab64 __arch_swab64
 #endif /* CONFIG_CPU_MIPS64_R2 */
 
 #endif /* CONFIG_CPU_MIPSR2 */
 
-#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
-#  define __BYTEORDER_HAS_U64__
-#  define __SWAB_64_THRU_32__
-#endif
-
-#endif /* __GNUC__ */
-
-#if defined(__MIPSEB__)
-#  include <linux/byteorder/big_endian.h>
-#elif defined(__MIPSEL__)
-#  include <linux/byteorder/little_endian.h>
-#else
-#  error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
-#endif
+#include <linux/byteorder.h>
 
 #endif /* _ASM_BYTEORDER_H */

arch/mips/include/asm/cpu-features.h

@@ -141,6 +141,8 @@
 #define cpu_has_mips64	(cpu_has_mips64r1 | cpu_has_mips64r2)
 #define cpu_has_mips_r1	(cpu_has_mips32r1 | cpu_has_mips64r1)
 #define cpu_has_mips_r2	(cpu_has_mips32r2 | cpu_has_mips64r2)
+#define cpu_has_mips_r	(cpu_has_mips32r1 | cpu_has_mips32r2 | \
+			 cpu_has_mips64r1 | cpu_has_mips64r2)
 
 #ifndef cpu_has_dsp
 #define cpu_has_dsp		(cpu_data[0].ases & MIPS_ASE_DSP)

arch/mips/include/asm/ds1286.h

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Machine dependent access functions for RTC registers.
- *
- * Copyright (C) 2003 Ralf Baechle (ralf@linux-mips.org)
- */
-#ifndef _ASM_DS1286_H
-#define _ASM_DS1286_H
-
-#include <ds1286.h>
-
-#endif /* _ASM_DS1286_H */

arch/mips/include/asm/fpu_emulator.h

@@ -23,6 +23,9 @@
 #ifndef _ASM_FPU_EMULATOR_H
 #define _ASM_FPU_EMULATOR_H
 
+#include <asm/break.h>
+#include <asm/inst.h>
+
 struct mips_fpu_emulator_stats {
 	unsigned int emulated;
 	unsigned int loads;
@@ -34,4 +37,18 @@ struct mips_fpu_emulator_stats {
 
 extern struct mips_fpu_emulator_stats fpuemustats;
 
+extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir,
+	unsigned long cpc);
+extern int do_dsemulret(struct pt_regs *xcp);
+
+/*
+ * Instruction inserted following the badinst to further tag the sequence
+ */
+#define BD_COOKIE 0x0000bd36	/* tne $0, $0 with baggage */
+
+/*
+ * Break instruction with special math emu break code set
+ */
+#define BREAK_MATH (0x0000000d | (BRK_MEMU << 16))
+
 #endif /* _ASM_FPU_EMULATOR_H */

arch/mips/include/asm/m48t35.h

-/*
- *  Registers for the SGS-Thomson M48T35 Timekeeper RAM chip
- */
-#ifndef _ASM_M48T35_H
-#define _ASM_M48T35_H
-
-#include <linux/spinlock.h>
-
-extern spinlock_t rtc_lock;
-
-struct m48t35_rtc {
-	volatile u8	pad[0x7ff8];    /* starts at 0x7ff8 */
-	volatile u8	control;
-	volatile u8	sec;
-	volatile u8	min;
-	volatile u8	hour;
-	volatile u8	day;
-	volatile u8	date;
-	volatile u8	month;
-	volatile u8	year;
-};
-
-#define M48T35_RTC_SET		0x80
-#define M48T35_RTC_STOPPED	0x80
-#define M48T35_RTC_READ		0x40
-
-#endif /* _ASM_M48T35_H */

arch/mips/kernel/smp.c

@@ -195,12 +195,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 /* preload SMP state for boot cpu */
 void __devinit smp_prepare_boot_cpu(void)
 {
-	/*
-	 * This assumes that bootup is always handled by the processor
-	 * with the logic and physical number 0.
-	 */
-	__cpu_number_map[0] = 0;
-	__cpu_logical_map[0] = 0;
 	cpu_set(0, phys_cpu_present_map);
 	cpu_set(0, cpu_online_map);
 	cpu_set(0, cpu_callin_map);

arch/mips/kernel/traps.c

@@ -32,6 +32,7 @@
 #include <asm/cpu.h>
 #include <asm/dsp.h>
 #include <asm/fpu.h>
+#include <asm/fpu_emulator.h>
 #include <asm/mipsregs.h>
 #include <asm/mipsmtregs.h>
 #include <asm/module.h>
@@ -722,6 +723,21 @@ static void do_trap_or_bp(struct pt_regs *regs, unsigned int code,
 		die_if_kernel("Kernel bug detected", regs);
 		force_sig(SIGTRAP, current);
 		break;
+	case BRK_MEMU:
+		/*
+		 * Address errors may be deliberately induced by the FPU
+		 * emulator to retake control of the CPU after executing the
+		 * instruction in the delay slot of an emulated branch.
+		 *
+		 * Terminate if exception was recognized as a delay slot return
+		 * otherwise handle as normal.
+		 */
+		if (do_dsemulret(regs))
+			return;
+
+		die_if_kernel("Math emu break/trap", regs);
+		force_sig(SIGTRAP, current);
+		break;
 	default:
 		scnprintf(b, sizeof(b), "%s instruction in kernel code", str);
 		die_if_kernel(b, regs);
@@ -1555,6 +1571,8 @@ void __cpuinit set_uncached_handler(unsigned long offset, void *addr,
 #ifdef CONFIG_64BIT
 	unsigned long uncached_ebase = TO_UNCAC(ebase);
 #endif
+	if (cpu_has_mips_r2)
+		ebase += (read_c0_ebase() & 0x3ffff000);
 
 	if (!addr)
 		panic(panic_null_cerr);
@@ -1588,8 +1606,11 @@ void __init trap_init(void)
 
 	if (cpu_has_veic || cpu_has_vint)
 		ebase = (unsigned long) alloc_bootmem_low_pages(0x200 + VECTORSPACING*64);
-	else
+	else {
 		ebase = CAC_BASE;
+		if (cpu_has_mips_r2)
+			ebase += (read_c0_ebase() & 0x3ffff000);
+	}
 
 	per_cpu_trap_init();
 
@@ -1697,11 +1718,11 @@ void __init trap_init(void)
 
 	if (cpu_has_vce)
 		/* Special exception: R4[04]00 uses also the divec space. */
-		memcpy((void *)(CAC_BASE + 0x180), &except_vec3_r4000, 0x100);
+		memcpy((void *)(ebase + 0x180), &except_vec3_r4000, 0x100);
 	else if (cpu_has_4kex)
-		memcpy((void *)(CAC_BASE + 0x180), &except_vec3_generic, 0x80);
+		memcpy((void *)(ebase + 0x180), &except_vec3_generic, 0x80);
 	else
-		memcpy((void *)(CAC_BASE + 0x080), &except_vec3_generic, 0x80);
+		memcpy((void *)(ebase + 0x080), &except_vec3_generic, 0x80);
 
 	signal_init();
 #ifdef CONFIG_MIPS32_COMPAT

arch/mips/kernel/unaligned.c

@@ -499,21 +499,9 @@ static void emulate_load_store_insn(struct pt_regs *regs,
 
 asmlinkage void do_ade(struct pt_regs *regs)
 {
-	extern int do_dsemulret(struct pt_regs *);
 	unsigned int __user *pc;
 	mm_segment_t seg;
 
-	/*
-	 * Address errors may be deliberately induced by the FPU emulator to
-	 * retake control of the CPU after executing the instruction in the
-	 * delay slot of an emulated branch.
-	 */
-	/* Terminate if exception was recognized as a delay slot return */
-	if (do_dsemulret(regs))
-		return;
-
-	/* Otherwise handle as normal */
-
 	/*
 	 * Did we catch a fault trying to load an instruction?
 	 * Or are we running in MIPS16 mode?

arch/mips/math-emu/cp1emu.c

@@ -48,7 +48,6 @@
 #include <asm/branch.h>
 
 #include "ieee754.h"
-#include "dsemul.h"
 
 /* Strap kernel emulator for full MIPS IV emulation */
 
@@ -346,9 +345,6 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx)
 			/* cop control register rd -> gpr[rt] */
 			u32 value;
 
-			if (ir == CP1UNDEF) {
-				return do_dsemulret(xcp);
-			}
 			if (MIPSInst_RD(ir) == FPCREG_CSR) {
 				value = ctx->fcr31;
 				value = (value & ~0x3) | mips_rm[value & 0x3];

arch/mips/math-emu/dsemul.c

@@ -18,7 +18,6 @@
 #include <asm/fpu_emulator.h>
 
 #include "ieee754.h"
-#include "dsemul.h"
 
 /* Strap kernel emulator for full MIPS IV emulation */
 
@@ -94,7 +93,7 @@ int mips_dsemul(struct pt_regs *regs, mips_instruction ir, unsigned long cpc)
 		return SIGBUS;
 
 	err = __put_user(ir, &fr->emul);
-	err |= __put_user((mips_instruction)BADINST, &fr->badinst);
+	err |= __put_user((mips_instruction)BREAK_MATH, &fr->badinst);
 	err |= __put_user((mips_instruction)BD_COOKIE, &fr->cookie);
 	err |= __put_user(cpc, &fr->epc);
 
@@ -130,13 +129,13 @@ int do_dsemulret(struct pt_regs *xcp)
 	/*
 	 * Do some sanity checking on the stackframe:
 	 *
-	 *  - Is the instruction pointed to by the EPC an BADINST?
+	 *  - Is the instruction pointed to by the EPC an BREAK_MATH?
 	 *  - Is the following memory word the BD_COOKIE?
 	 */
 	err = __get_user(insn, &fr->badinst);
 	err |= __get_user(cookie, &fr->cookie);
 
-	if (unlikely(err || (insn != BADINST) || (cookie != BD_COOKIE))) {
+	if (unlikely(err || (insn != BREAK_MATH) || (cookie != BD_COOKIE))) {
 		fpuemustats.errors++;
 		return 0;
 	}

arch/mips/math-emu/dsemul.h

-extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir, unsigned long cpc);
-extern int do_dsemulret(struct pt_regs *xcp);
-
-/* Instruction which will always cause an address error */
-#define AdELOAD 0x8c000001	/* lw $0,1($0) */
-/* Instruction which will plainly cause a CP1 exception when FPU is disabled */
-#define CP1UNDEF 0x44400001    /* cfc1 $0,$0 undef  */
-
-/* Instruction inserted following the badinst to further tag the sequence */
-#define BD_COOKIE 0x0000bd36 /* tne $0,$0 with baggage */
-
-/* Setup which instruction to use for trampoline */
-#ifdef STANDALONE_EMULATOR
-#define BADINST CP1UNDEF
-#else
-#define BADINST AdELOAD
-#endif

arch/mips/txx9/rbtx4927/setup.c

@@ -49,6 +49,7 @@
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>
+#include <linux/leds.h>
 #include <asm/io.h>
 #include <asm/reboot.h>
 #include <asm/txx9/generic.h>
@@ -210,10 +211,6 @@ static void __init rbtx4927_mem_setup(void)
 	/* TX4927-SIO DTR on (PIO[15]) */
 	gpio_request(15, "sio-dtr");
 	gpio_direction_output(15, 1);
-	gpio_request(0, "led");
-	gpio_direction_output(0, 1);
-	gpio_request(1, "led");
-	gpio_direction_output(1, 1);
 
 	tx4927_sio_init(0, 0);
 #ifdef CONFIG_SERIAL_TXX9_CONSOLE
@@ -315,6 +312,25 @@ static void __init rbtx4927_mtd_init(void)
 		tx4927_mtd_init(i);
 }
 
+static void __init rbtx4927_gpioled_init(void)
+{
+	static struct gpio_led leds[] = {
+		{ .name = "gpioled:green:0", .gpio = 0, .active_low = 1, },
+		{ .name = "gpioled:green:1", .gpio = 1, .active_low = 1, },
+	};
+	static struct gpio_led_platform_data pdata = {
+		.num_leds = ARRAY_SIZE(leds),
+		.leds = leds,
+	};
+	struct platform_device *pdev = platform_device_alloc("leds-gpio", 0);
+
+	if (!pdev)
+		return;
+	pdev->dev.platform_data = &pdata;
+	if (platform_device_add(pdev))
+		platform_device_put(pdev);
+}
+
 static void __init rbtx4927_device_init(void)
 {
 	toshiba_rbtx4927_rtc_init();
@@ -322,6 +338,7 @@ static void __init rbtx4927_device_init(void)
 	tx4927_wdt_init();
 	rbtx4927_mtd_init();
 	txx9_iocled_init(RBTX4927_LED_ADDR - IO_BASE, -1, 3, 1, "green", NULL);
+	rbtx4927_gpioled_init();
 }
 
 struct txx9_board_vec rbtx4927_vec __initdata = {

arch/mips/txx9/rbtx4939/setup.c

@@ -308,16 +308,22 @@ static void __init rbtx4939_device_init(void)
 #if defined(CONFIG_TC35815) || defined(CONFIG_TC35815_MODULE)
 	int i, j;
 	unsigned char ethaddr[2][6];
+	u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
+
 	for (i = 0; i < 2; i++) {
 		unsigned long area = CKSEG1 + 0x1fff0000 + (i * 0x10);
-		if (readb(rbtx4939_bdipsw_addr) & 8) {
+		if (bdipsw == 0)
+			memcpy(ethaddr[i], (void *)area, 6);
+		else {
 			u16 buf[3];
-			area -= 0x03000000;
+			if (bdipsw & 8)
+				area -= 0x03000000;
+			else
+				area -= 0x01000000;
 			for (j = 0; j < 3; j++)
 				buf[j] = le16_to_cpup((u16 *)(area + j * 2));
 			memcpy(ethaddr[i], buf, 6);
-		} else
-			memcpy(ethaddr[i], (void *)area, 6);
+		}
 	}
 	tx4939_ethaddr_init(ethaddr[0], ethaddr[1]);
 #endif

drivers/char/Kconfig

@@ -812,28 +812,6 @@ config JS_RTC
 	  To compile this driver as a module, choose M here: the
 	  module will be called js-rtc.
 
-config SGI_DS1286
-	tristate "SGI DS1286 RTC support"
-	depends on SGI_HAS_DS1286
-	help
-	  If you say Y here and create a character special file /dev/rtc with
-	  major number 10 and minor number 135 using mknod ("man mknod"), you
-	  will get access to the real time clock built into your computer.
-	  Every SGI has such a clock built in. It reports status information
-	  via the file /proc/rtc and its behaviour is set by various ioctls on
-	  /dev/rtc.
-
-config SGI_IP27_RTC
-	bool "SGI M48T35 RTC support"
-	depends on SGI_IP27
-	help
-	  If you say Y here and create a character special file /dev/rtc with
-	  major number 10 and minor number 135 using mknod ("man mknod"), you
-	  will get access to the real time clock built into your computer.
-	  Every SGI has such a clock built in. It reports status information
-	  via the file /proc/rtc and its behaviour is set by various ioctls on
-	  /dev/rtc.
-
 config GEN_RTC
 	tristate "Generic /dev/rtc emulation"
 	depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH && !AVR32

drivers/char/Makefile

@@ -74,8 +74,6 @@ obj-$(CONFIG_RTC)		+= rtc.o
 obj-$(CONFIG_HPET)		+= hpet.o
 obj-$(CONFIG_GEN_RTC)		+= genrtc.o
 obj-$(CONFIG_EFI_RTC)		+= efirtc.o
-obj-$(CONFIG_SGI_DS1286)	+= ds1286.o
-obj-$(CONFIG_SGI_IP27_RTC)	+= ip27-rtc.o
 obj-$(CONFIG_DS1302)		+= ds1302.o
 obj-$(CONFIG_XILINX_HWICAP)	+= xilinx_hwicap/
 ifeq ($(CONFIG_GENERIC_NVRAM),y)

drivers/char/ip27-rtc.c

-/*
- *	Driver for the SGS-Thomson M48T35 Timekeeper RAM chip
- *
- *	Real Time Clock interface for Linux
- *
- *	TODO: Implement periodic interrupts.
- *
- *	Copyright (C) 2000 Silicon Graphics, Inc.
- *	Written by Ulf Carlsson (ulfc@engr.sgi.com)
- *
- *	Based on code written by Paul Gortmaker.
- *
- *	This driver allows use of the real time clock (built into
- *	nearly all computers) from user space. It exports the /dev/rtc
- *	interface supporting various ioctl() and also the /proc/rtc
- *	pseudo-file for status information.
- *
- *	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.
- *
- */
-
-#define RTC_VERSION		"1.09b"
-
-#include <linux/bcd.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/smp_lock.h>
-#include <linux/types.h>
-#include <linux/miscdevice.h>
-#include <linux/ioport.h>
-#include <linux/fcntl.h>
-#include <linux/rtc.h>
-#include <linux/init.h>
-#include <linux/poll.h>
-#include <linux/proc_fs.h>
-
-#include <asm/m48t35.h>
-#include <asm/sn/ioc3.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/sn/klconfig.h>
-#include <asm/sn/sn0/ip27.h>
-#include <asm/sn/sn0/hub.h>
-#include <asm/sn/sn_private.h>
-
-static long rtc_ioctl(struct file *filp, unsigned int cmd,
-			unsigned long arg);
-
-static int rtc_read_proc(char *page, char **start, off_t off,
-                         int count, int *eof, void *data);
-
-static void get_rtc_time(struct rtc_time *rtc_tm);
-
-/*
- *	Bits in rtc_status. (6 bits of room for future expansion)
- */
-
-#define RTC_IS_OPEN		0x01	/* means /dev/rtc is in use	*/
-#define RTC_TIMER_ON		0x02	/* missed irq timer active	*/
-
-static unsigned char rtc_status;	/* bitmapped status byte.	*/
-static unsigned long rtc_freq;	/* Current periodic IRQ rate	*/
-static struct m48t35_rtc *rtc;
-
-/*
- *	If this driver ever becomes modularised, it will be really nice
- *	to make the epoch retain its value across module reload...
- */
-
-static unsigned long epoch = 1970;	/* year corresponding to 0x00	*/
-
-static const unsigned char days_in_mo[] =
-{0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-
-static long rtc_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
-
-	struct rtc_time wtime;
-
-	switch (cmd) {
-	case RTC_RD_TIME:	/* Read the time/date from RTC	*/
-	{
-		get_rtc_time(&wtime);
-		break;
-	}
-	case RTC_SET_TIME:	/* Set the RTC */
-	{
-		struct rtc_time rtc_tm;
-		unsigned char mon, day, hrs, min, sec, leap_yr;
-		unsigned int yrs;
-
-		if (!capable(CAP_SYS_TIME))
-			return -EACCES;
-
-		if (copy_from_user(&rtc_tm, (struct rtc_time*)arg,
-				   sizeof(struct rtc_time)))
-			return -EFAULT;
-
-		yrs = rtc_tm.tm_year + 1900;
-		mon = rtc_tm.tm_mon + 1;   /* tm_mon starts at zero */
-		day = rtc_tm.tm_mday;
-		hrs = rtc_tm.tm_hour;
-		min = rtc_tm.tm_min;
-		sec = rtc_tm.tm_sec;
-
-		if (yrs < 1970)
-			return -EINVAL;
-
-		leap_yr = ((!(yrs % 4) && (yrs % 100)) || !(yrs % 400));
-
-		if ((mon > 12) || (day == 0))
-			return -EINVAL;
-
-		if (day > (days_in_mo[mon] + ((mon == 2) && leap_yr)))
-			return -EINVAL;
-
-		if ((hrs >= 24) || (min >= 60) || (sec >= 60))
-			return -EINVAL;
-
-		if ((yrs -= epoch) > 255)    /* They are unsigned */
-			return -EINVAL;
-
-		if (yrs > 169)
-			return -EINVAL;
-
-		if (yrs >= 100)
-			yrs -= 100;
-
-		sec = bin2bcd(sec);
-		min = bin2bcd(min);
-		hrs = bin2bcd(hrs);
-		day = bin2bcd(day);
-		mon = bin2bcd(mon);
-		yrs = bin2bcd(yrs);
-
-		spin_lock_irq(&rtc_lock);
-		rtc->control |= M48T35_RTC_SET;
-		rtc->year = yrs;
-		rtc->month = mon;
-		rtc->date = day;
-		rtc->hour = hrs;
-		rtc->min = min;
-		rtc->sec = sec;
-		rtc->control &= ~M48T35_RTC_SET;
-		spin_unlock_irq(&rtc_lock);
-
-		return 0;
-	}
-	default:
-		return -EINVAL;
-	}
-	return copy_to_user((void *)arg, &wtime, sizeof wtime) ? -EFAULT : 0;
-}
-
-/*
- *	We enforce only one user at a time here with the open/close.
- *	Also clear the previous interrupt data on an open, and clean
- *	up things on a close.
- */
-
-static int rtc_open(struct inode *inode, struct file *file)
-{
-	lock_kernel();
-	spin_lock_irq(&rtc_lock);
-
-	if (rtc_status & RTC_IS_OPEN) {
-		spin_unlock_irq(&rtc_lock);
-		unlock_kernel();
-		return -EBUSY;
-	}
-
-	rtc_status |= RTC_IS_OPEN;
-	spin_unlock_irq(&rtc_lock);
-	unlock_kernel();
-
-	return 0;
-}
-
-static int rtc_release(struct inode *inode, struct file *file)
-{
-	/*
-	 * Turn off all interrupts once the device is no longer
-	 * in use, and clear the data.
-	 */
-
-	spin_lock_irq(&rtc_lock);
-	rtc_status &= ~RTC_IS_OPEN;
-	spin_unlock_irq(&rtc_lock);
-
-	return 0;
-}
-
-/*
- *	The various file operations we support.
- */
-
-static const struct file_operations rtc_fops = {
-	.owner		= THIS_MODULE,
-	.unlocked_ioctl	= rtc_ioctl,
-	.open		= rtc_open,
-	.release	= rtc_release,
-};
-
-static struct miscdevice rtc_dev=
-{
-	RTC_MINOR,
-	"rtc",
-	&rtc_fops
-};
-
-static int __init rtc_init(void)
-{
-	rtc = (struct m48t35_rtc *)
-	(KL_CONFIG_CH_CONS_INFO(master_nasid)->memory_base + IOC3_BYTEBUS_DEV0);
-
-	printk(KERN_INFO "Real Time Clock Driver v%s\n", RTC_VERSION);
-	if (misc_register(&rtc_dev)) {
-		printk(KERN_ERR "rtc: cannot register misc device.\n");
-		return -ENODEV;
-	}
-	if (!create_proc_read_entry("driver/rtc", 0, NULL, rtc_read_proc, NULL)) {
-		printk(KERN_ERR "rtc: cannot create /proc/rtc.\n");
-		misc_deregister(&rtc_dev);
-		return -ENOENT;
-	}
-
-	rtc_freq = 1024;
-
-	return 0;
-}
-
-static void __exit rtc_exit (void)
-{
-	/* interrupts and timer disabled at this point by rtc_release */
-
-	remove_proc_entry ("rtc", NULL);
-	misc_deregister(&rtc_dev);
-}
-
-module_init(rtc_init);
-module_exit(rtc_exit);
-
-/*
- *	Info exported via "/proc/rtc".
- */
-
-static int rtc_get_status(char *buf)
-{
-	char *p;
-	struct rtc_time tm;
-
-	/*
-	 * Just emulate the standard /proc/rtc
-	 */
-
-	p = buf;
-
-	get_rtc_time(&tm);
-
-	/*
-	 * There is no way to tell if the luser has the RTC set for local
-	 * time or for Universal Standard Time (GMT). Probably local though.
-	 */
-	p += sprintf(p,
-		     "rtc_time\t: %02d:%02d:%02d\n"
-		     "rtc_date\t: %04d-%02d-%02d\n"
-	 	     "rtc_epoch\t: %04lu\n"
-		     "24hr\t\t: yes\n",
-		     tm.tm_hour, tm.tm_min, tm.tm_sec,
-		     tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, epoch);
-
-	return  p - buf;
-}
-
-static int rtc_read_proc(char *page, char **start, off_t off,
-                                 int count, int *eof, void *data)
-{
-        int len = rtc_get_status(page);
-        if (len <= off+count) *eof = 1;
-        *start = page + off;
-        len -= off;
-        if (len>count) len = count;
-        if (len<0) len = 0;
-        return len;
-}
-
-static void get_rtc_time(struct rtc_time *rtc_tm)
-{
-	/*
-	 * Do we need to wait for the last update to finish?
-	 */
-
-	/*
-	 * Only the values that we read from the RTC are set. We leave
-	 * tm_wday, tm_yday and tm_isdst untouched. Even though the
-	 * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
-	 * by the RTC when initially set to a non-zero value.
-	 */
-	spin_lock_irq(&rtc_lock);
-	rtc->control |= M48T35_RTC_READ;
-	rtc_tm->tm_sec = rtc->sec;
-	rtc_tm->tm_min = rtc->min;
-	rtc_tm->tm_hour = rtc->hour;
-	rtc_tm->tm_mday = rtc->date;
-	rtc_tm->tm_mon = rtc->month;
-	rtc_tm->tm_year = rtc->year;
-	rtc->control &= ~M48T35_RTC_READ;
-	spin_unlock_irq(&rtc_lock);
-
-	rtc_tm->tm_sec = bcd2bin(rtc_tm->tm_sec);
-	rtc_tm->tm_min = bcd2bin(rtc_tm->tm_min);
-	rtc_tm->tm_hour = bcd2bin(rtc_tm->tm_hour);
-	rtc_tm->tm_mday = bcd2bin(rtc_tm->tm_mday);
-	rtc_tm->tm_mon = bcd2bin(rtc_tm->tm_mon);
-	rtc_tm->tm_year = bcd2bin(rtc_tm->tm_year);
-
-	/*
-	 * Account for differences between how the RTC uses the values
-	 * and how they are defined in a struct rtc_time;
-	 */
-	if ((rtc_tm->tm_year += (epoch - 1900)) <= 69)
-		rtc_tm->tm_year += 100;
-
-	rtc_tm->tm_mon--;
-}