diff options
Diffstat (limited to 'target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/mipsinc.h')
| -rw-r--r-- | target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/mipsinc.h | 541 |
1 files changed, 541 insertions, 0 deletions
diff --git a/target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/mipsinc.h b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/mipsinc.h new file mode 100644 index 0000000..2c87031 --- /dev/null +++ b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/mipsinc.h @@ -0,0 +1,541 @@ +/* + * HND Run Time Environment for standalone MIPS programs. + * + * Copyright 2006, Broadcom Corporation + * All Rights Reserved. + * + * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY + * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM + * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. + * + * $Id: mipsinc.h,v 1.1.1.5 2006/02/27 03:43:16 honor Exp $ + */ + +#ifndef _MISPINC_H +#define _MISPINC_H + + +/* MIPS defines */ + +#ifdef _LANGUAGE_ASSEMBLY + +/* + * Symbolic register names for 32 bit ABI + */ +#define zero $0 /* wired zero */ +#define AT $1 /* assembler temp - uppercase because of ".set at" */ +#define v0 $2 /* return value */ +#define v1 $3 +#define a0 $4 /* argument registers */ +#define a1 $5 +#define a2 $6 +#define a3 $7 +#define t0 $8 /* caller saved */ +#define t1 $9 +#define t2 $10 +#define t3 $11 +#define t4 $12 +#define t5 $13 +#define t6 $14 +#define t7 $15 +#define s0 $16 /* callee saved */ +#define s1 $17 +#define s2 $18 +#define s3 $19 +#define s4 $20 +#define s5 $21 +#define s6 $22 +#define s7 $23 +#define t8 $24 /* caller saved */ +#define t9 $25 +#define jp $25 /* PIC jump register */ +#define k0 $26 /* kernel scratch */ +#define k1 $27 +#define gp $28 /* global pointer */ +#define sp $29 /* stack pointer */ +#define fp $30 /* frame pointer */ +#define s8 $30 /* same like fp! */ +#define ra $31 /* return address */ + + +/* CP0 Registers */ + +#define C0_INX $0 +#define C0_RAND $1 +#define C0_TLBLO0 $2 +#define C0_TLBLO C0_TLBLO0 +#define C0_TLBLO1 $3 +#define C0_CTEXT $4 +#define C0_PGMASK $5 +#define C0_WIRED $6 +#define C0_BADVADDR $8 +#define C0_COUNT $9 +#define C0_TLBHI $10 +#define C0_COMPARE $11 +#define C0_SR $12 +#define C0_STATUS C0_SR +#define C0_CAUSE $13 +#define C0_EPC $14 +#define C0_PRID $15 +#define C0_CONFIG $16 +#define C0_LLADDR $17 +#define C0_WATCHLO $18 +#define C0_WATCHHI $19 +#define C0_XCTEXT $20 +#define C0_DIAGNOSTIC $22 +#define C0_BROADCOM C0_DIAGNOSTIC +#define C0_PERFORMANCE $25 +#define C0_ECC $26 +#define C0_CACHEERR $27 +#define C0_TAGLO $28 +#define C0_TAGHI $29 +#define C0_ERREPC $30 +#define C0_DESAVE $31 + +/* + * LEAF - declare leaf routine + */ +#define LEAF(symbol) \ + .globl symbol; \ + .align 2; \ + .type symbol, @function; \ + .ent symbol, 0; \ +symbol: .frame sp, 0, ra + +/* + * END - mark end of function + */ +#define END(function) \ + .end function; \ + .size function, . - function + +#define _ULCAST_ + +#define MFC0_SEL(dst, src, sel) \ + .word\t(0x40000000 | ((dst) << 16) | ((src) << 11) | (sel)) + + +#define MTC0_SEL(dst, src, sel) \ + .word\t(0x40800000 | ((dst) << 16) | ((src) << 11) | (sel)) + +#else + +/* + * The following macros are especially useful for __asm__ + * inline assembler. + */ +#ifndef __STR +#define __STR(x) #x +#endif +#ifndef STR +#define STR(x) __STR(x) +#endif + +#define _ULCAST_ (unsigned long) + + +/* CP0 Registers */ + +#define C0_INX 0 /* CP0: TLB Index */ +#define C0_RAND 1 /* CP0: TLB Random */ +#define C0_TLBLO0 2 /* CP0: TLB EntryLo0 */ +#define C0_TLBLO C0_TLBLO0 /* CP0: TLB EntryLo0 */ +#define C0_TLBLO1 3 /* CP0: TLB EntryLo1 */ +#define C0_CTEXT 4 /* CP0: Context */ +#define C0_PGMASK 5 /* CP0: TLB PageMask */ +#define C0_WIRED 6 /* CP0: TLB Wired */ +#define C0_BADVADDR 8 /* CP0: Bad Virtual Address */ +#define C0_COUNT 9 /* CP0: Count */ +#define C0_TLBHI 10 /* CP0: TLB EntryHi */ +#define C0_COMPARE 11 /* CP0: Compare */ +#define C0_SR 12 /* CP0: Processor Status */ +#define C0_STATUS C0_SR /* CP0: Processor Status */ +#define C0_CAUSE 13 /* CP0: Exception Cause */ +#define C0_EPC 14 /* CP0: Exception PC */ +#define C0_PRID 15 /* CP0: Processor Revision Indentifier */ +#define C0_CONFIG 16 /* CP0: Config */ +#define C0_LLADDR 17 /* CP0: LLAddr */ +#define C0_WATCHLO 18 /* CP0: WatchpointLo */ +#define C0_WATCHHI 19 /* CP0: WatchpointHi */ +#define C0_XCTEXT 20 /* CP0: XContext */ +#define C0_DIAGNOSTIC 22 /* CP0: Diagnostic */ +#define C0_BROADCOM C0_DIAGNOSTIC /* CP0: Broadcom Register */ +#define C0_PERFORMANCE 25 /* CP0: Performance Counter/Control Registers */ +#define C0_ECC 26 /* CP0: ECC */ +#define C0_CACHEERR 27 /* CP0: CacheErr */ +#define C0_TAGLO 28 /* CP0: TagLo */ +#define C0_TAGHI 29 /* CP0: TagHi */ +#define C0_ERREPC 30 /* CP0: ErrorEPC */ +#define C0_DESAVE 31 /* CP0: DebugSave */ + +#endif /* _LANGUAGE_ASSEMBLY */ + +/* + * Memory segments (32bit kernel mode addresses) + */ +#undef KUSEG +#undef KSEG0 +#undef KSEG1 +#undef KSEG2 +#undef KSEG3 +#define KUSEG 0x00000000 +#define KSEG0 0x80000000 +#define KSEG1 0xa0000000 +#define KSEG2 0xc0000000 +#define KSEG3 0xe0000000 +#define PHYSADDR_MASK 0x1fffffff + +/* + * Map an address to a certain kernel segment + */ +#undef PHYSADDR +#undef KSEG0ADDR +#undef KSEG1ADDR +#undef KSEG2ADDR +#undef KSEG3ADDR + +#define PHYSADDR(a) (_ULCAST_(a) & PHYSADDR_MASK) +#define KSEG0ADDR(a) ((_ULCAST_(a) & PHYSADDR_MASK) | KSEG0) +#define KSEG1ADDR(a) ((_ULCAST_(a) & PHYSADDR_MASK) | KSEG1) +#define KSEG2ADDR(a) ((_ULCAST_(a) & PHYSADDR_MASK) | KSEG2) +#define KSEG3ADDR(a) ((_ULCAST_(a) & PHYSADDR_MASK) | KSEG3) + + +#ifndef Index_Invalidate_I +/* + * Cache Operations + */ +#define Index_Invalidate_I 0x00 +#define Index_Writeback_Inv_D 0x01 +#define Index_Invalidate_SI 0x02 +#define Index_Writeback_Inv_SD 0x03 +#define Index_Load_Tag_I 0x04 +#define Index_Load_Tag_D 0x05 +#define Index_Load_Tag_SI 0x06 +#define Index_Load_Tag_SD 0x07 +#define Index_Store_Tag_I 0x08 +#define Index_Store_Tag_D 0x09 +#define Index_Store_Tag_SI 0x0A +#define Index_Store_Tag_SD 0x0B +#define Create_Dirty_Excl_D 0x0d +#define Create_Dirty_Excl_SD 0x0f +#define Hit_Invalidate_I 0x10 +#define Hit_Invalidate_D 0x11 +#define Hit_Invalidate_SI 0x12 +#define Hit_Invalidate_SD 0x13 +#define Fill_I 0x14 +#define Hit_Writeback_Inv_D 0x15 + /* 0x16 is unused */ +#define Hit_Writeback_Inv_SD 0x17 +#define R5K_Page_Invalidate_S 0x17 +#define Hit_Writeback_I 0x18 +#define Hit_Writeback_D 0x19 + /* 0x1a is unused */ +#define Hit_Writeback_SD 0x1b + /* 0x1c is unused */ + /* 0x1e is unused */ +#define Hit_Set_Virtual_SI 0x1e +#define Hit_Set_Virtual_SD 0x1f +#endif /* !Index_Invalidate_I */ + + +/* + * R4x00 interrupt enable / cause bits + */ +#define IE_SW0 (_ULCAST_(1) << 8) +#define IE_SW1 (_ULCAST_(1) << 9) +#define IE_IRQ0 (_ULCAST_(1) << 10) +#define IE_IRQ1 (_ULCAST_(1) << 11) +#define IE_IRQ2 (_ULCAST_(1) << 12) +#define IE_IRQ3 (_ULCAST_(1) << 13) +#define IE_IRQ4 (_ULCAST_(1) << 14) +#define IE_IRQ5 (_ULCAST_(1) << 15) + +#ifndef ST0_UM +/* + * Bitfields in the mips32 cp0 status register + */ +#define ST0_IE 0x00000001 +#define ST0_EXL 0x00000002 +#define ST0_ERL 0x00000004 +#define ST0_UM 0x00000010 +#define ST0_SWINT0 0x00000100 +#define ST0_SWINT1 0x00000200 +#define ST0_HWINT0 0x00000400 +#define ST0_HWINT1 0x00000800 +#define ST0_HWINT2 0x00001000 +#define ST0_HWINT3 0x00002000 +#define ST0_HWINT4 0x00004000 +#define ST0_HWINT5 0x00008000 +#define ST0_IM 0x0000ff00 +#define ST0_NMI 0x00080000 +#define ST0_SR 0x00100000 +#define ST0_TS 0x00200000 +#define ST0_BEV 0x00400000 +#define ST0_RE 0x02000000 +#define ST0_RP 0x08000000 +#define ST0_CU 0xf0000000 +#define ST0_CU0 0x10000000 +#define ST0_CU1 0x20000000 +#define ST0_CU2 0x40000000 +#define ST0_CU3 0x80000000 +#endif /* !ST0_UM */ + + +/* + * Bitfields in the mips32 cp0 cause register + */ +#define C_EXC 0x0000007c +#define C_EXC_SHIFT 2 +#define C_INT 0x0000ff00 +#define C_INT_SHIFT 8 +#define C_SW0 (_ULCAST_(1) << 8) +#define C_SW1 (_ULCAST_(1) << 9) +#define C_IRQ0 (_ULCAST_(1) << 10) +#define C_IRQ1 (_ULCAST_(1) << 11) +#define C_IRQ2 (_ULCAST_(1) << 12) +#define C_IRQ3 (_ULCAST_(1) << 13) +#define C_IRQ4 (_ULCAST_(1) << 14) +#define C_IRQ5 (_ULCAST_(1) << 15) +#define C_WP 0x00400000 +#define C_IV 0x00800000 +#define C_CE 0x30000000 +#define C_CE_SHIFT 28 +#define C_BD 0x80000000 + +/* Values in C_EXC */ +#define EXC_INT 0 +#define EXC_TLBM 1 +#define EXC_TLBL 2 +#define EXC_TLBS 3 +#define EXC_AEL 4 +#define EXC_AES 5 +#define EXC_IBE 6 +#define EXC_DBE 7 +#define EXC_SYS 8 +#define EXC_BPT 9 +#define EXC_RI 10 +#define EXC_CU 11 +#define EXC_OV 12 +#define EXC_TR 13 +#define EXC_WATCH 23 +#define EXC_MCHK 24 + + +/* + * Bits in the cp0 config register. + */ +#define CONF_CM_CACHABLE_NO_WA 0 +#define CONF_CM_CACHABLE_WA 1 +#define CONF_CM_UNCACHED 2 +#define CONF_CM_CACHABLE_NONCOHERENT 3 +#define CONF_CM_CACHABLE_CE 4 +#define CONF_CM_CACHABLE_COW 5 +#define CONF_CM_CACHABLE_CUW 6 +#define CONF_CM_CACHABLE_ACCELERATED 7 +#define CONF_CM_CMASK 7 +#define CONF_CU (_ULCAST_(1) << 3) +#define CONF_DB (_ULCAST_(1) << 4) +#define CONF_IB (_ULCAST_(1) << 5) +#define CONF_SE (_ULCAST_(1) << 12) +#ifndef CONF_BE /* duplicate in mipsregs.h */ +#define CONF_BE (_ULCAST_(1) << 15) +#endif +#define CONF_SC (_ULCAST_(1) << 17) +#define CONF_AC (_ULCAST_(1) << 23) +#define CONF_HALT (_ULCAST_(1) << 25) +#ifndef CONF_M /* duplicate in mipsregs.h */ +#define CONF_M (_ULCAST_(1) << 31) +#endif + + +/* + * Bits in the cp0 config register select 1. + */ +#define CONF1_FP 0x00000001 /* FPU present */ +#define CONF1_EP 0x00000002 /* EJTAG present */ +#define CONF1_CA 0x00000004 /* mips16 implemented */ +#define CONF1_WR 0x00000008 /* Watch registers present */ +#define CONF1_PC 0x00000010 /* Performance counters present */ +#define CONF1_DA_SHIFT 7 /* D$ associativity */ +#define CONF1_DA_MASK 0x00000380 +#define CONF1_DA_BASE 1 +#define CONF1_DL_SHIFT 10 /* D$ line size */ +#define CONF1_DL_MASK 0x00001c00 +#define CONF1_DL_BASE 2 +#define CONF1_DS_SHIFT 13 /* D$ sets/way */ +#define CONF1_DS_MASK 0x0000e000 +#define CONF1_DS_BASE 64 +#define CONF1_IA_SHIFT 16 /* I$ associativity */ +#define CONF1_IA_MASK 0x00070000 +#define CONF1_IA_BASE 1 +#define CONF1_IL_SHIFT 19 /* I$ line size */ +#define CONF1_IL_MASK 0x00380000 +#define CONF1_IL_BASE 2 +#define CONF1_IS_SHIFT 22 /* Instruction cache sets/way */ +#define CONF1_IS_MASK 0x01c00000 +#define CONF1_IS_BASE 64 +#define CONF1_MS_MASK 0x7e000000 /* Number of tlb entries */ +#define CONF1_MS_SHIFT 25 + +/* PRID register */ +#define PRID_COPT_MASK 0xff000000 +#define PRID_COMP_MASK 0x00ff0000 +#define PRID_IMP_MASK 0x0000ff00 +#define PRID_REV_MASK 0x000000ff + +#define PRID_COMP_LEGACY 0x000000 +#define PRID_COMP_MIPS 0x010000 +#define PRID_COMP_BROADCOM 0x020000 +#define PRID_COMP_ALCHEMY 0x030000 +#define PRID_COMP_SIBYTE 0x040000 +#define PRID_IMP_BCM4710 0x4000 +#define PRID_IMP_BCM3302 0x9000 +#define PRID_IMP_BCM3303 0x9100 + +#define PRID_IMP_UNKNOWN 0xff00 + +#define BCM330X(id) \ + (((id & (PRID_COMP_MASK | PRID_IMP_MASK)) == \ + (PRID_COMP_BROADCOM | PRID_IMP_BCM3302)) || \ + ((id & (PRID_COMP_MASK | PRID_IMP_MASK)) == \ + (PRID_COMP_BROADCOM | PRID_IMP_BCM3303))) + +/* Bits in C0_BROADCOM */ +#define BRCM_PFC_AVAIL 0x20000000 /* PFC is available */ +#define BRCM_DC_ENABLE 0x40000000 /* Enable Data $ */ +#define BRCM_IC_ENABLE 0x80000000 /* Enable Instruction $ */ +#define BRCM_PFC_ENABLE 0x00400000 /* Obsolete? Enable PFC (at least on 4310) */ +#define BRCM_CLF_ENABLE 0x00100000 /* Enable cache line first feature */ + +/* PreFetch Cache aka Read Ahead Cache */ + +#define PFC_CR0 0xff400000 /* control reg 0 */ +#define PFC_CR1 0xff400004 /* control reg 1 */ + +/* PFC operations */ +#define PFC_I 0x00000001 /* Enable PFC use for instructions */ +#define PFC_D 0x00000002 /* Enable PFC use for data */ +#define PFC_PFI 0x00000004 /* Enable seq. prefetch for instructions */ +#define PFC_PFD 0x00000008 /* Enable seq. prefetch for data */ +#define PFC_CINV 0x00000010 /* Enable selective (i/d) cacheop flushing */ +#define PFC_NCH 0x00000020 /* Disable flushing based on cacheops */ +#define PFC_DPF 0x00000040 /* Enable directional prefetching */ +#define PFC_FLUSH 0x00000100 /* Flush the PFC */ +#define PFC_BRR 0x40000000 /* Bus error indication */ +#define PFC_PWR 0x80000000 /* Disable power saving (clock gating) */ + +/* Handy defaults */ +#define PFC_DISABLED 0 +#define PFC_AUTO 0xffffffff /* auto select the default mode */ +#define PFC_INST (PFC_I | PFC_PFI | PFC_CINV) +#define PFC_INST_NOPF (PFC_I | PFC_CINV) +#define PFC_DATA (PFC_D | PFC_PFD | PFC_CINV) +#define PFC_DATA_NOPF (PFC_D | PFC_CINV) +#define PFC_I_AND_D (PFC_INST | PFC_DATA) +#define PFC_I_AND_D_NOPF (PFC_INST_NOPF | PFC_DATA_NOPF) + +#ifndef _LANGUAGE_ASSEMBLY + +/* + * Macros to access the system control coprocessor + */ + +#define MFC0(source, sel) \ +({ \ + int __res; \ + __asm__ __volatile__(" \ + .set\tnoreorder; \ + .set\tnoat; \ + .word\t"STR(0x40010000 | ((source) << 11) | (sel))"; \ + move\t%0, $1; \ + .set\tat; \ + .set\treorder" \ + :"=r" (__res) \ + : \ + :"$1"); \ + __res; \ +}) + +#define MTC0(source, sel, value) \ +do { \ + __asm__ __volatile__(" \ + .set\tnoreorder; \ + .set\tnoat; \ + move\t$1, %z0; \ + .word\t"STR(0x40810000 | ((source) << 11) | (sel))"; \ + .set\tat; \ + .set\treorder" \ + : \ + :"jr" (value) \ + :"$1"); \ +} while (0) + +#define get_c0_count() \ +({ \ + int __res; \ + __asm__ __volatile__(" \ + .set\tnoreorder; \ + .set\tnoat; \ + mfc0\t%0, $9; \ + .set\tat; \ + .set\treorder" \ + :"=r" (__res)); \ + __res; \ +}) + +static INLINE void icache_probe(uint32 config1, uint *size, uint *lsize) +{ + uint lsz, sets, ways; + + /* Instruction Cache Size = Associativity * Line Size * Sets Per Way */ + if ((lsz = ((config1 & CONF1_IL_MASK) >> CONF1_IL_SHIFT))) + lsz = CONF1_IL_BASE << lsz; + sets = CONF1_IS_BASE << ((config1 & CONF1_IS_MASK) >> CONF1_IS_SHIFT); + ways = CONF1_IA_BASE + ((config1 & CONF1_IA_MASK) >> CONF1_IA_SHIFT); + *size = lsz * sets * ways; + *lsize = lsz; +} + +static INLINE void dcache_probe(uint32 config1, uint *size, uint *lsize) +{ + uint lsz, sets, ways; + + /* Data Cache Size = Associativity * Line Size * Sets Per Way */ + if ((lsz = ((config1 & CONF1_DL_MASK) >> CONF1_DL_SHIFT))) + lsz = CONF1_DL_BASE << lsz; + sets = CONF1_DS_BASE << ((config1 & CONF1_DS_MASK) >> CONF1_DS_SHIFT); + ways = CONF1_DA_BASE + ((config1 & CONF1_DA_MASK) >> CONF1_DA_SHIFT); + *size = lsz * sets * ways; + *lsize = lsz; +} + +#define cache_op(base, op) \ + __asm__ __volatile__(" \ + .set noreorder; \ + .set mips3; \ + cache %1, (%0); \ + .set mips0; \ + .set reorder" \ + : \ + : "r" (base), \ + "i" (op)); + +#define cache_unroll4(base, delta, op) \ + __asm__ __volatile__(" \ + .set noreorder; \ + .set mips3; \ + cache %1, 0(%0); \ + cache %1, delta(%0); \ + cache %1, (2 * delta)(%0); \ + cache %1, (3 * delta)(%0); \ + .set mips0; \ + .set reorder" \ + : \ + : "r" (base), \ + "i" (op)); + +#endif /* !_LANGUAGE_ASSEMBLY */ + +#endif /* _MISPINC_H */ |