From 1ee27e13d6fdb19d297f8d1d6d3d7d8449d0361e Mon Sep 17 00:00:00 2001 From: Terry Lv Date: Thu, 10 Dec 2009 11:26:52 +0800 Subject: ENGR00119171: ubifs support for android recovery mode. ubifs support for android recovery mode. Signed-off-by: Terry Lv --- include/asm-arm/bitops.h | 81 +++++++++++++++++++++----------------- include/asm-arm/proc-armv/system.h | 30 -------------- 2 files changed, 44 insertions(+), 67 deletions(-) (limited to 'include/asm-arm') diff --git a/include/asm-arm/bitops.h b/include/asm-arm/bitops.h index 4b8bab2..8eeada5 100644 --- a/include/asm-arm/bitops.h +++ b/include/asm-arm/bitops.h @@ -17,6 +17,8 @@ #ifdef __KERNEL__ +#include + #define smp_mb__before_clear_bit() do { } while (0) #define smp_mb__after_clear_bit() do { } while (0) @@ -25,59 +27,72 @@ */ extern void set_bit(int nr, volatile void * addr); -static inline void __set_bit(int nr, volatile void *addr) -{ - ((unsigned char *) addr)[nr >> 3] |= (1U << (nr & 7)); -} - extern void clear_bit(int nr, volatile void * addr); -static inline void __clear_bit(int nr, volatile void *addr) -{ - ((unsigned char *) addr)[nr >> 3] &= ~(1U << (nr & 7)); -} - extern void change_bit(int nr, volatile void * addr); static inline void __change_bit(int nr, volatile void *addr) { - ((unsigned char *) addr)[nr >> 3] ^= (1U << (nr & 7)); -} + unsigned long mask = BIT_MASK(nr); + unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); -extern int test_and_set_bit(int nr, volatile void * addr); + *p ^= mask; +} static inline int __test_and_set_bit(int nr, volatile void *addr) { - unsigned int mask = 1 << (nr & 7); - unsigned int oldval; + unsigned long mask = BIT_MASK(nr); + unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); + unsigned long old = *p; - oldval = ((unsigned char *) addr)[nr >> 3]; - ((unsigned char *) addr)[nr >> 3] = oldval | mask; - return oldval & mask; + *p = old | mask; + return (old & mask) != 0; } -extern int test_and_clear_bit(int nr, volatile void * addr); +static inline int test_and_set_bit(int nr, volatile void *addr) +{ + unsigned long flags; + int out; + + local_irq_save(flags); + out = __test_and_set_bit(nr, addr); + local_irq_restore(flags); + + return out; +} static inline int __test_and_clear_bit(int nr, volatile void *addr) { - unsigned int mask = 1 << (nr & 7); - unsigned int oldval; + unsigned long mask = BIT_MASK(nr); + unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); + unsigned long old = *p; - oldval = ((unsigned char *) addr)[nr >> 3]; - ((unsigned char *) addr)[nr >> 3] = oldval & ~mask; - return oldval & mask; + *p = old & ~mask; + return (old & mask) != 0; +} + +static inline int test_and_clear_bit(int nr, volatile void *addr) +{ + unsigned long flags; + int out; + + local_irq_save(flags); + out = __test_and_clear_bit(nr, addr); + local_irq_restore(flags); + + return out; } extern int test_and_change_bit(int nr, volatile void * addr); static inline int __test_and_change_bit(int nr, volatile void *addr) { - unsigned int mask = 1 << (nr & 7); - unsigned int oldval; + unsigned long mask = BIT_MASK(nr); + unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); + unsigned long old = *p; - oldval = ((unsigned char *) addr)[nr >> 3]; - ((unsigned char *) addr)[nr >> 3] = oldval ^ mask; - return oldval & mask; + *p = old ^ mask; + return (old & mask) != 0; } extern int find_first_zero_bit(void * addr, unsigned size); @@ -110,14 +125,6 @@ static inline unsigned long ffz(unsigned long word) } /* - * ffs: find first bit set. This is defined the same way as - * the libc and compiler builtin ffs routines, therefore - * differs in spirit from the above ffz (man ffs). - */ - -#define ffs(x) generic_ffs(x) - -/* * hweightN: returns the hamming weight (i.e. the number * of bits set) of a N-bit word */ diff --git a/include/asm-arm/proc-armv/system.h b/include/asm-arm/proc-armv/system.h index e7b0fe6..b4cfa68 100644 --- a/include/asm-arm/proc-armv/system.h +++ b/include/asm-arm/proc-armv/system.h @@ -12,36 +12,6 @@ #include -#define set_cr(x) \ - __asm__ __volatile__( \ - "mcr p15, 0, %0, c1, c0 @ set CR" \ - : : "r" (x)) - -#define CR_M (1 << 0) /* MMU enable */ -#define CR_A (1 << 1) /* Alignment abort enable */ -#define CR_C (1 << 2) /* Dcache enable */ -#define CR_W (1 << 3) /* Write buffer enable */ -#define CR_P (1 << 4) /* 32-bit exception handler */ -#define CR_D (1 << 5) /* 32-bit data address range */ -#define CR_L (1 << 6) /* Implementation defined */ -#define CD_B (1 << 7) /* Big endian */ -#define CR_S (1 << 8) /* System MMU protection */ -#define CD_R (1 << 9) /* ROM MMU protection */ -#define CR_F (1 << 10) /* Implementation defined */ -#define CR_Z (1 << 11) /* Implementation defined */ -#define CR_I (1 << 12) /* Icache enable */ -#define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */ -#define CR_RR (1 << 14) /* Round Robin cache replacement */ - -extern unsigned long cr_no_alignment; /* defined in entry-armv.S */ -extern unsigned long cr_alignment; /* defined in entry-armv.S */ - -#if __LINUX_ARM_ARCH__ >= 4 -#define vectors_base() ((cr_alignment & CR_V) ? 0xffff0000 : 0) -#else -#define vectors_base() (0) -#endif - /* * Save the current interrupt enable state & disable IRQs */ -- cgit v1.1