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 @@ -#ifndef __ASM_BFIN_PROCESSOR_H -#define __ASM_BFIN_PROCESSOR_H - -/* - * Default implementation of macro that returns current - * instruction pointer ("program counter"). - */ -#define current_text_addr() ({ __label__ _l; _l: &&_l;}) - -#include <asm/blackfin.h> -#include <asm/segment.h> -#include <linux/compiler.h> - -static inline unsigned long rdusp(void) -{ - unsigned long usp; - - __asm__ __volatile__("%0 = usp;\n\t":"=da"(usp)); - return usp; -} - -static inline void wrusp(unsigned long usp) -{ - __asm__ __volatile__("usp = %0;\n\t"::"da"(usp)); -} - -/* - * User space process size: 1st byte beyond user address space. - * Fairly meaningless on nommu. Parts of user programs can be scattered - * in a lot of places, so just disable this by setting it to 0xFFFFFFFF. - */ -#define TASK_SIZE 0xFFFFFFFF - -#ifdef __KERNEL__ -#define STACK_TOP TASK_SIZE -#endif - -#define TASK_UNMAPPED_BASE 0 - -struct thread_struct { - unsigned long ksp; /* kernel stack pointer */ - unsigned long usp; /* user stack pointer */ - unsigned short seqstat; /* saved status register */ - unsigned long esp0; /* points to SR of stack frame pt_regs */ - unsigned long pc; /* instruction pointer */ - void * debuggerinfo; -}; - -#define INIT_THREAD { \ - sizeof(init_stack) + (unsigned long) init_stack, 0, \ - PS_S, 0, 0 \ -} - -/* - * Do necessary setup to start up a newly executed thread. - * - * pass the data segment into user programs if it exists, - * it can't hurt anything as far as I can tell - */ -#define start_thread(_regs, _pc, _usp) \ -do { \ - set_fs(USER_DS); \ - (_regs)->pc = (_pc); \ - if (current->mm) \ - (_regs)->p5 = current->mm->start_data; \ - task_thread_info(current)->l1_task_info.stack_start \ - = (void *)current->mm->context.stack_start; \ - task_thread_info(current)->l1_task_info.lowest_sp = (void *)(_usp); \ - memcpy(L1_SCRATCH_TASK_INFO, &task_thread_info(current)->l1_task_info, \ - sizeof(*L1_SCRATCH_TASK_INFO)); \ - wrusp(_usp); \ -} while(0) - -/* Forward declaration, a strange C thing */ -struct task_struct; - -/* Free all resources held by a thread. */ -static inline void release_thread(struct task_struct *dead_task) -{ -} - -#define prepare_to_copy(tsk) do { } while (0) - -extern int kernel_thread(int (*fn) (void *), void *arg, unsigned long flags); - -/* - * Free current thread data structures etc.. - */ -static inline void exit_thread(void) -{ -} - -/* - * Return saved PC of a blocked thread. - */ -#define thread_saved_pc(tsk) (tsk->thread.pc) - -unsigned long get_wchan(struct task_struct *p); - -#define KSTK_EIP(tsk) \ - ({ \ - unsigned long eip = 0; \ - if ((tsk)->thread.esp0 > PAGE_SIZE && \ - MAP_NR((tsk)->thread.esp0) < max_mapnr) \ - eip = ((struct pt_regs *) (tsk)->thread.esp0)->pc; \ - eip; }) -#define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp) - -#define cpu_relax() barrier() - -/* Get the Silicon Revision of the chip */ -static inline uint32_t __pure bfin_revid(void) -{ - /* stored in the upper 4 bits */ - uint32_t revid = bfin_read_CHIPID() >> 28; - -#ifdef CONFIG_BF52x - /* ANOMALY_05000357 - * Incorrect Revision Number in DSPID Register - */ - if (revid == 0) - switch (bfin_read16(_BOOTROM_GET_DXE_ADDRESS_TWI)) { - case 0x0010: - revid = 0; - break; - case 0x2796: - revid = 1; - break; - default: - revid = 0xFFFF; - break; - } -#endif - return revid; -} - -static inline uint32_t __pure bfin_compiled_revid(void) -{ -#if defined(CONFIG_BF_REV_0_0) - return 0; -#elif defined(CONFIG_BF_REV_0_1) - return 1; -#elif defined(CONFIG_BF_REV_0_2) - return 2; -#elif defined(CONFIG_BF_REV_0_3) - return 3; -#elif defined(CONFIG_BF_REV_0_4) - return 4; -#elif defined(CONFIG_BF_REV_0_5) - return 5; -#elif defined(CONFIG_BF_REV_ANY) - return 0xffff; -#else - return -1; -#endif -} - -#endif |