diff options
Diffstat (limited to 'include/asm-blackfin/processor.h')
-rw-r--r-- | include/asm-blackfin/processor.h | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/include/asm-blackfin/processor.h b/include/asm-blackfin/processor.h deleted file mode 100644 index 6f3995b119d8..000000000000 --- a/include/asm-blackfin/processor.h +++ /dev/null | |||
@@ -1,158 +0,0 @@ | |||
1 | #ifndef __ASM_BFIN_PROCESSOR_H | ||
2 | #define __ASM_BFIN_PROCESSOR_H | ||
3 | |||
4 | /* | ||
5 | * Default implementation of macro that returns current | ||
6 | * instruction pointer ("program counter"). | ||
7 | */ | ||
8 | #define current_text_addr() ({ __label__ _l; _l: &&_l;}) | ||
9 | |||
10 | #include <asm/blackfin.h> | ||
11 | #include <asm/segment.h> | ||
12 | #include <linux/compiler.h> | ||
13 | |||
14 | static inline unsigned long rdusp(void) | ||
15 | { | ||
16 | unsigned long usp; | ||
17 | |||
18 | __asm__ __volatile__("%0 = usp;\n\t":"=da"(usp)); | ||
19 | return usp; | ||
20 | } | ||
21 | |||
22 | static inline void wrusp(unsigned long usp) | ||
23 | { | ||
24 | __asm__ __volatile__("usp = %0;\n\t"::"da"(usp)); | ||
25 | } | ||
26 | |||
27 | /* | ||
28 | * User space process size: 1st byte beyond user address space. | ||
29 | * Fairly meaningless on nommu. Parts of user programs can be scattered | ||
30 | * in a lot of places, so just disable this by setting it to 0xFFFFFFFF. | ||
31 | */ | ||
32 | #define TASK_SIZE 0xFFFFFFFF | ||
33 | |||
34 | #ifdef __KERNEL__ | ||
35 | #define STACK_TOP TASK_SIZE | ||
36 | #endif | ||
37 | |||
38 | #define TASK_UNMAPPED_BASE 0 | ||
39 | |||
40 | struct thread_struct { | ||
41 | unsigned long ksp; /* kernel stack pointer */ | ||
42 | unsigned long usp; /* user stack pointer */ | ||
43 | unsigned short seqstat; /* saved status register */ | ||
44 | unsigned long esp0; /* points to SR of stack frame pt_regs */ | ||
45 | unsigned long pc; /* instruction pointer */ | ||
46 | void * debuggerinfo; | ||
47 | }; | ||
48 | |||
49 | #define INIT_THREAD { \ | ||
50 | sizeof(init_stack) + (unsigned long) init_stack, 0, \ | ||
51 | PS_S, 0, 0 \ | ||
52 | } | ||
53 | |||
54 | /* | ||
55 | * Do necessary setup to start up a newly executed thread. | ||
56 | * | ||
57 | * pass the data segment into user programs if it exists, | ||
58 | * it can't hurt anything as far as I can tell | ||
59 | */ | ||
60 | #define start_thread(_regs, _pc, _usp) \ | ||
61 | do { \ | ||
62 | set_fs(USER_DS); \ | ||
63 | (_regs)->pc = (_pc); \ | ||
64 | if (current->mm) \ | ||
65 | (_regs)->p5 = current->mm->start_data; \ | ||
66 | task_thread_info(current)->l1_task_info.stack_start \ | ||
67 | = (void *)current->mm->context.stack_start; \ | ||
68 | task_thread_info(current)->l1_task_info.lowest_sp = (void *)(_usp); \ | ||
69 | memcpy(L1_SCRATCH_TASK_INFO, &task_thread_info(current)->l1_task_info, \ | ||
70 | sizeof(*L1_SCRATCH_TASK_INFO)); \ | ||
71 | wrusp(_usp); \ | ||
72 | } while(0) | ||
73 | |||
74 | /* Forward declaration, a strange C thing */ | ||
75 | struct task_struct; | ||
76 | |||
77 | /* Free all resources held by a thread. */ | ||
78 | static inline void release_thread(struct task_struct *dead_task) | ||
79 | { | ||
80 | } | ||
81 | |||
82 | #define prepare_to_copy(tsk) do { } while (0) | ||
83 | |||
84 | extern int kernel_thread(int (*fn) (void *), void *arg, unsigned long flags); | ||
85 | |||
86 | /* | ||
87 | * Free current thread data structures etc.. | ||
88 | */ | ||
89 | static inline void exit_thread(void) | ||
90 | { | ||
91 | } | ||
92 | |||
93 | /* | ||
94 | * Return saved PC of a blocked thread. | ||
95 | */ | ||
96 | #define thread_saved_pc(tsk) (tsk->thread.pc) | ||
97 | |||
98 | unsigned long get_wchan(struct task_struct *p); | ||
99 | |||
100 | #define KSTK_EIP(tsk) \ | ||
101 | ({ \ | ||
102 | unsigned long eip = 0; \ | ||
103 | if ((tsk)->thread.esp0 > PAGE_SIZE && \ | ||
104 | MAP_NR((tsk)->thread.esp0) < max_mapnr) \ | ||
105 | eip = ((struct pt_regs *) (tsk)->thread.esp0)->pc; \ | ||
106 | eip; }) | ||
107 | #define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp) | ||
108 | |||
109 | #define cpu_relax() barrier() | ||
110 | |||
111 | /* Get the Silicon Revision of the chip */ | ||
112 | static inline uint32_t __pure bfin_revid(void) | ||
113 | { | ||
114 | /* stored in the upper 4 bits */ | ||
115 | uint32_t revid = bfin_read_CHIPID() >> 28; | ||
116 | |||
117 | #ifdef CONFIG_BF52x | ||
118 | /* ANOMALY_05000357 | ||
119 | * Incorrect Revision Number in DSPID Register | ||
120 | */ | ||
121 | if (revid == 0) | ||
122 | switch (bfin_read16(_BOOTROM_GET_DXE_ADDRESS_TWI)) { | ||
123 | case 0x0010: | ||
124 | revid = 0; | ||
125 | break; | ||
126 | case 0x2796: | ||
127 | revid = 1; | ||
128 | break; | ||
129 | default: | ||
130 | revid = 0xFFFF; | ||
131 | break; | ||
132 | } | ||
133 | #endif | ||
134 | return revid; | ||
135 | } | ||
136 | |||
137 | static inline uint32_t __pure bfin_compiled_revid(void) | ||
138 | { | ||
139 | #if defined(CONFIG_BF_REV_0_0) | ||
140 | return 0; | ||
141 | #elif defined(CONFIG_BF_REV_0_1) | ||
142 | return 1; | ||
143 | #elif defined(CONFIG_BF_REV_0_2) | ||
144 | return 2; | ||
145 | #elif defined(CONFIG_BF_REV_0_3) | ||
146 | return 3; | ||
147 | #elif defined(CONFIG_BF_REV_0_4) | ||
148 | return 4; | ||
149 | #elif defined(CONFIG_BF_REV_0_5) | ||
150 | return 5; | ||
151 | #elif defined(CONFIG_BF_REV_ANY) | ||
152 | return 0xffff; | ||
153 | #else | ||
154 | return -1; | ||
155 | #endif | ||
156 | } | ||
157 | |||
158 | #endif | ||