diff options
Diffstat (limited to 'arch/blackfin/include/asm/processor.h')
| -rw-r--r-- | arch/blackfin/include/asm/processor.h | 86 |
1 files changed, 43 insertions, 43 deletions
diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h index 6f3995b119d..d0e72e9475a 100644 --- a/arch/blackfin/include/asm/processor.h +++ b/arch/blackfin/include/asm/processor.h @@ -1,3 +1,9 @@ +/* + * Copyright 2004-2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + #ifndef __ASM_BFIN_PROCESSOR_H #define __ASM_BFIN_PROCESSOR_H @@ -7,9 +13,8 @@ */ #define current_text_addr() ({ __label__ _l; _l: &&_l;}) -#include <asm/blackfin.h> -#include <asm/segment.h> -#include <linux/compiler.h> +#include <asm/ptrace.h> +#include <mach/blackfin.h> static inline unsigned long rdusp(void) { @@ -24,6 +29,14 @@ static inline void wrusp(unsigned long usp) __asm__ __volatile__("usp = %0;\n\t"::"da"(usp)); } +static inline unsigned long __get_SP(void) +{ + unsigned long sp; + + __asm__ __volatile__("%0 = sp;\n\t" : "=da"(sp)); + return sp; +} + /* * User space process size: 1st byte beyond user address space. * Fairly meaningless on nommu. Parts of user programs can be scattered @@ -51,25 +64,8 @@ struct thread_struct { 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) +extern void start_thread(struct pt_regs *regs, unsigned long new_ip, + unsigned long new_sp); /* Forward declaration, a strange C thing */ struct task_struct; @@ -79,10 +75,6 @@ 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.. */ @@ -106,34 +98,40 @@ unsigned long get_wchan(struct task_struct *p); eip; }) #define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp) -#define cpu_relax() barrier() +#define cpu_relax() smp_mb() + /* 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; + /* Always use CHIPID, to work around ANOMALY_05000234 */ + uint32_t revid = (bfin_read_CHIPID() & CHIPID_VERSION) >> 28; -#ifdef CONFIG_BF52x - /* ANOMALY_05000357 +#ifdef _BOOTROM_GET_DXE_ADDRESS_TWI + /* + * ANOMALY_05000364 * 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; - } + if (ANOMALY_05000364 && + bfin_read16(_BOOTROM_GET_DXE_ADDRESS_TWI) == 0x2796) + revid = 1; #endif + return revid; } +static inline uint16_t __pure bfin_cpuid(void) +{ + return (bfin_read_CHIPID() & CHIPID_FAMILY) >> 12; +} + +static inline uint32_t __pure bfin_dspid(void) +{ + return bfin_read_DSPID(); +} + +#define blackfin_core_id() (bfin_dspid() & 0xff) + static inline uint32_t __pure bfin_compiled_revid(void) { #if defined(CONFIG_BF_REV_0_0) @@ -148,6 +146,8 @@ static inline uint32_t __pure bfin_compiled_revid(void) return 4; #elif defined(CONFIG_BF_REV_0_5) return 5; +#elif defined(CONFIG_BF_REV_0_6) + return 6; #elif defined(CONFIG_BF_REV_ANY) return 0xffff; #else |