1 /* 2 * Contains register definitions common to PowerPC 8xx CPUs. Notice 3 */ 4 #ifndef _ASM_POWERPC_REG_8xx_H 5 #define _ASM_POWERPC_REG_8xx_H 6 7 #include <asm/mmu-8xx.h> 8 9 /* Cache control on the MPC8xx is provided through some additional 10 * special purpose registers. 11 */ 12 #define SPRN_IC_CST 560 /* Instruction cache control/status */ 13 #define SPRN_IC_ADR 561 /* Address needed for some commands */ 14 #define SPRN_IC_DAT 562 /* Read-only data register */ 15 #define SPRN_DC_CST 568 /* Data cache control/status */ 16 #define SPRN_DC_ADR 569 /* Address needed for some commands */ 17 #define SPRN_DC_DAT 570 /* Read-only data register */ 18 19 /* Misc Debug */ 20 #define SPRN_DPDR 630 21 #define SPRN_MI_CAM 816 22 #define SPRN_MI_RAM0 817 23 #define SPRN_MI_RAM1 818 24 #define SPRN_MD_CAM 824 25 #define SPRN_MD_RAM0 825 26 #define SPRN_MD_RAM1 826 27 28 /* Commands. Only the first few are available to the instruction cache. 29 */ 30 #define IDC_ENABLE 0x02000000 /* Cache enable */ 31 #define IDC_DISABLE 0x04000000 /* Cache disable */ 32 #define IDC_LDLCK 0x06000000 /* Load and lock */ 33 #define IDC_UNLINE 0x08000000 /* Unlock line */ 34 #define IDC_UNALL 0x0a000000 /* Unlock all */ 35 #define IDC_INVALL 0x0c000000 /* Invalidate all */ 36 37 #define DC_FLINE 0x0e000000 /* Flush data cache line */ 38 #define DC_SFWT 0x01000000 /* Set forced writethrough mode */ 39 #define DC_CFWT 0x03000000 /* Clear forced writethrough mode */ 40 #define DC_SLES 0x05000000 /* Set little endian swap mode */ 41 #define DC_CLES 0x07000000 /* Clear little endian swap mode */ 42 43 /* Status. 44 */ 45 #define IDC_ENABLED 0x80000000 /* Cache is enabled */ 46 #define IDC_CERR1 0x00200000 /* Cache error 1 */ 47 #define IDC_CERR2 0x00100000 /* Cache error 2 */ 48 #define IDC_CERR3 0x00080000 /* Cache error 3 */ 49 50 #define DC_DFWT 0x40000000 /* Data cache is forced write through */ 51 #define DC_LES 0x20000000 /* Caches are little endian mode */ 52 53 #ifdef CONFIG_8xx_CPU6 54 #define do_mtspr_cpu6(rn, rn_addr, v) \ 55 do { \ 56 int _reg_cpu6 = rn_addr, _tmp_cpu6; \ 57 asm volatile("stw %0, %1;" \ 58 "lwz %0, %1;" \ 59 "mtspr " __stringify(rn) ",%2" : \ 60 : "r" (_reg_cpu6), "m"(_tmp_cpu6), \ 61 "r" ((unsigned long)(v)) \ 62 : "memory"); \ 63 } while (0) 64 65 #define do_mtspr(rn, v) asm volatile("mtspr " __stringify(rn) ",%0" : \ 66 : "r" ((unsigned long)(v)) \ 67 : "memory") 68 #define mtspr(rn, v) \ 69 do { \ 70 if (rn == SPRN_IMMR) \ 71 do_mtspr_cpu6(rn, 0x3d30, v); \ 72 else if (rn == SPRN_IC_CST) \ 73 do_mtspr_cpu6(rn, 0x2110, v); \ 74 else if (rn == SPRN_IC_ADR) \ 75 do_mtspr_cpu6(rn, 0x2310, v); \ 76 else if (rn == SPRN_IC_DAT) \ 77 do_mtspr_cpu6(rn, 0x2510, v); \ 78 else if (rn == SPRN_DC_CST) \ 79 do_mtspr_cpu6(rn, 0x3110, v); \ 80 else if (rn == SPRN_DC_ADR) \ 81 do_mtspr_cpu6(rn, 0x3310, v); \ 82 else if (rn == SPRN_DC_DAT) \ 83 do_mtspr_cpu6(rn, 0x3510, v); \ 84 else if (rn == SPRN_MI_CTR) \ 85 do_mtspr_cpu6(rn, 0x2180, v); \ 86 else if (rn == SPRN_MI_AP) \ 87 do_mtspr_cpu6(rn, 0x2580, v); \ 88 else if (rn == SPRN_MI_EPN) \ 89 do_mtspr_cpu6(rn, 0x2780, v); \ 90 else if (rn == SPRN_MI_TWC) \ 91 do_mtspr_cpu6(rn, 0x2b80, v); \ 92 else if (rn == SPRN_MI_RPN) \ 93 do_mtspr_cpu6(rn, 0x2d80, v); \ 94 else if (rn == SPRN_MI_CAM) \ 95 do_mtspr_cpu6(rn, 0x2190, v); \ 96 else if (rn == SPRN_MI_RAM0) \ 97 do_mtspr_cpu6(rn, 0x2390, v); \ 98 else if (rn == SPRN_MI_RAM1) \ 99 do_mtspr_cpu6(rn, 0x2590, v); \ 100 else if (rn == SPRN_MD_CTR) \ 101 do_mtspr_cpu6(rn, 0x3180, v); \ 102 else if (rn == SPRN_M_CASID) \ 103 do_mtspr_cpu6(rn, 0x3380, v); \ 104 else if (rn == SPRN_MD_AP) \ 105 do_mtspr_cpu6(rn, 0x3580, v); \ 106 else if (rn == SPRN_MD_EPN) \ 107 do_mtspr_cpu6(rn, 0x3780, v); \ 108 else if (rn == SPRN_M_TWB) \ 109 do_mtspr_cpu6(rn, 0x3980, v); \ 110 else if (rn == SPRN_MD_TWC) \ 111 do_mtspr_cpu6(rn, 0x3b80, v); \ 112 else if (rn == SPRN_MD_RPN) \ 113 do_mtspr_cpu6(rn, 0x3d80, v); \ 114 else if (rn == SPRN_M_TW) \ 115 do_mtspr_cpu6(rn, 0x3f80, v); \ 116 else if (rn == SPRN_MD_CAM) \ 117 do_mtspr_cpu6(rn, 0x3190, v); \ 118 else if (rn == SPRN_MD_RAM0) \ 119 do_mtspr_cpu6(rn, 0x3390, v); \ 120 else if (rn == SPRN_MD_RAM1) \ 121 do_mtspr_cpu6(rn, 0x3590, v); \ 122 else if (rn == SPRN_DEC) \ 123 do_mtspr_cpu6(rn, 0x2c00, v); \ 124 else if (rn == SPRN_TBWL) \ 125 do_mtspr_cpu6(rn, 0x3880, v); \ 126 else if (rn == SPRN_TBWU) \ 127 do_mtspr_cpu6(rn, 0x3a80, v); \ 128 else if (rn == SPRN_DPDR) \ 129 do_mtspr_cpu6(rn, 0x2d30, v); \ 130 else \ 131 do_mtspr(rn, v); \ 132 } while (0) 133 #endif 134 135 #endif /* _ASM_POWERPC_REG_8xx_H */ 136