1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Contains register definitions common to PowerPC 8xx CPUs. Notice 4 */ 5 #ifndef _ASM_POWERPC_REG_8xx_H 6 #define _ASM_POWERPC_REG_8xx_H 7 8 #include <asm/mmu.h> 9 10 /* Cache control on the MPC8xx is provided through some additional 11 * special purpose registers. 12 */ 13 #define SPRN_IC_CST 560 /* Instruction cache control/status */ 14 #define SPRN_IC_ADR 561 /* Address needed for some commands */ 15 #define SPRN_IC_DAT 562 /* Read-only data register */ 16 #define SPRN_DC_CST 568 /* Data cache control/status */ 17 #define SPRN_DC_ADR 569 /* Address needed for some commands */ 18 #define SPRN_DC_DAT 570 /* Read-only data register */ 19 20 /* Misc Debug */ 21 #define SPRN_DPDR 630 22 #define SPRN_MI_CAM 816 23 #define SPRN_MI_RAM0 817 24 #define SPRN_MI_RAM1 818 25 #define SPRN_MD_CAM 824 26 #define SPRN_MD_RAM0 825 27 #define SPRN_MD_RAM1 826 28 29 /* Special MSR manipulation registers */ 30 #define SPRN_EIE 80 /* External interrupt enable (EE=1, RI=1) */ 31 #define SPRN_EID 81 /* External interrupt disable (EE=0, RI=1) */ 32 #define SPRN_NRI 82 /* Non recoverable interrupt (EE=0, RI=0) */ 33 34 /* Debug registers */ 35 #define SPRN_CMPA 144 36 #define SPRN_COUNTA 150 37 #define SPRN_CMPE 152 38 #define SPRN_CMPF 153 39 #define SPRN_LCTRL1 156 40 #define SPRN_LCTRL2 157 41 #define SPRN_ICTRL 158 42 #define SPRN_BAR 159 43 44 /* Commands. Only the first few are available to the instruction cache. 45 */ 46 #define IDC_ENABLE 0x02000000 /* Cache enable */ 47 #define IDC_DISABLE 0x04000000 /* Cache disable */ 48 #define IDC_LDLCK 0x06000000 /* Load and lock */ 49 #define IDC_UNLINE 0x08000000 /* Unlock line */ 50 #define IDC_UNALL 0x0a000000 /* Unlock all */ 51 #define IDC_INVALL 0x0c000000 /* Invalidate all */ 52 53 #define DC_FLINE 0x0e000000 /* Flush data cache line */ 54 #define DC_SFWT 0x01000000 /* Set forced writethrough mode */ 55 #define DC_CFWT 0x03000000 /* Clear forced writethrough mode */ 56 #define DC_SLES 0x05000000 /* Set little endian swap mode */ 57 #define DC_CLES 0x07000000 /* Clear little endian swap mode */ 58 59 /* Status. 60 */ 61 #define IDC_ENABLED 0x80000000 /* Cache is enabled */ 62 #define IDC_CERR1 0x00200000 /* Cache error 1 */ 63 #define IDC_CERR2 0x00100000 /* Cache error 2 */ 64 #define IDC_CERR3 0x00080000 /* Cache error 3 */ 65 66 #define DC_DFWT 0x40000000 /* Data cache is forced write through */ 67 #define DC_LES 0x20000000 /* Caches are little endian mode */ 68 69 #endif /* _ASM_POWERPC_REG_8xx_H */ 70