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author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-12 22:28:08 -0500 |
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committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 09:13:12 +0200 |
commit | 819833af39a91fa1c1e8252862bbda6f5a602f7b (patch) | |
tree | d5c9d1628643347ab2b5a8085acfa6f96709fda3 /arch/mips/include/asm/processor.h | |
parent | 61f2b38a17f5b21c59f2afe6cf1cbb5f28638cf9 (diff) | |
download | u-boot-imx-819833af39a91fa1c1e8252862bbda6f5a602f7b.zip u-boot-imx-819833af39a91fa1c1e8252862bbda6f5a602f7b.tar.gz u-boot-imx-819833af39a91fa1c1e8252862bbda6f5a602f7b.tar.bz2 |
Move architecture-specific includes to arch/$ARCH/include/asm
This helps to clean up the include/ directory so that it only contains
non-architecture-specific headers and also matches Linux's directory
layout which many U-Boot developers are already familiar with.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'arch/mips/include/asm/processor.h')
-rw-r--r-- | arch/mips/include/asm/processor.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h new file mode 100644 index 0000000..24858dd --- /dev/null +++ b/arch/mips/include/asm/processor.h @@ -0,0 +1,142 @@ +/* + * 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. + * + * Copyright (C) 1994 Waldorf GMBH + * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003 Ralf Baechle + * Copyright (C) 1996 Paul M. Antoine + * Copyright (C) 1999, 2000 Silicon Graphics, Inc. + */ +#ifndef _ASM_PROCESSOR_H +#define _ASM_PROCESSOR_H + +#include <linux/config.h> + +#include <asm/isadep.h> + +#include <asm/cachectl.h> +#include <asm/mipsregs.h> +#include <asm/reg.h> +#include <asm/system.h> + +/* + * Return current * instruction pointer ("program counter"). + */ +#define current_text_addr() ({ __label__ _l; _l: &&_l;}) + +/* + * System setup and hardware flags.. + */ +extern void (*cpu_wait)(void); + +extern unsigned int vced_count, vcei_count; + +#define NUM_FPU_REGS 32 + +typedef __u64 fpureg_t; + +/* + * It would be nice to add some more fields for emulator statistics, but there + * are a number of fixed offsets in offset.h and elsewhere that would have to + * be recalculated by hand. So the additional information will be private to + * the FPU emulator for now. See asm-mips/fpu_emulator.h. + */ + +struct mips_fpu_struct { + fpureg_t fpr[NUM_FPU_REGS]; + unsigned int fcr31; +}; + +#define NUM_DSP_REGS 6 + +typedef __u32 dspreg_t; + +struct mips_dsp_state { + dspreg_t dspr[NUM_DSP_REGS]; + unsigned int dspcontrol; +}; + +typedef struct { + unsigned long seg; +} mm_segment_t; + +#define ARCH_MIN_TASKALIGN 8 + +struct mips_abi; + +/* + * If you change thread_struct remember to change the #defines below too! + */ +struct thread_struct { + /* Saved main processor registers. */ + unsigned long reg16; + unsigned long reg17, reg18, reg19, reg20, reg21, reg22, reg23; + unsigned long reg29, reg30, reg31; + + /* Saved cp0 stuff. */ + unsigned long cp0_status; + + /* Saved fpu/fpu emulator stuff. */ + struct mips_fpu_struct fpu; +#ifdef CONFIG_MIPS_MT_FPAFF + /* Emulated instruction count */ + unsigned long emulated_fp; + /* Saved per-thread scheduler affinity mask */ + cpumask_t user_cpus_allowed; +#endif /* CONFIG_MIPS_MT_FPAFF */ + + /* Saved state of the DSP ASE, if available. */ + struct mips_dsp_state dsp; + + /* Other stuff associated with the thread. */ + unsigned long cp0_badvaddr; /* Last user fault */ + unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */ + unsigned long error_code; + unsigned long trap_no; + unsigned long irix_trampoline; /* Wheee... */ + unsigned long irix_oldctx; + struct mips_abi *abi; +}; + +struct task_struct; + +/* Free all resources held by a thread. */ +#define release_thread(thread) do { } while(0) + +/* Prepare to copy thread state - unlazy all lazy status */ +#define prepare_to_copy(tsk) do { } while (0) + +#define cpu_relax() barrier() + +/* + * Return_address is a replacement for __builtin_return_address(count) + * which on certain architectures cannot reasonably be implemented in GCC + * (MIPS, Alpha) or is unuseable with -fomit-frame-pointer (i386). + * Note that __builtin_return_address(x>=1) is forbidden because GCC + * aborts compilation on some CPUs. It's simply not possible to unwind + * some CPU's stackframes. + * + * __builtin_return_address works only for non-leaf functions. We avoid the + * overhead of a function call by forcing the compiler to save the return + * address register on the stack. + */ +#define return_address() ({__asm__ __volatile__("":::"$31");__builtin_return_address(0);}) + +#ifdef CONFIG_CPU_HAS_PREFETCH + +#define ARCH_HAS_PREFETCH + +static inline void prefetch(const void *addr) +{ + __asm__ __volatile__( + " .set mips4 \n" + " pref %0, (%1) \n" + " .set mips0 \n" + : + : "i" (Pref_Load), "r" (addr)); +} + +#endif + +#endif /* _ASM_PROCESSOR_H */ |