xref: /linux/arch/powerpc/include/asm/reg_8xx.h (revision 8dd06ef34b6e2f41b29fbf5fc1663780f2524285)
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 /* Cache control on the MPC8xx is provided through some additional
9  * special purpose registers.
10  */
11 #define SPRN_IC_CST	560	/* Instruction cache control/status */
12 #define SPRN_IC_ADR	561	/* Address needed for some commands */
13 #define SPRN_IC_DAT	562	/* Read-only data register */
14 #define SPRN_DC_CST	568	/* Data cache control/status */
15 #define SPRN_DC_ADR	569	/* Address needed for some commands */
16 #define SPRN_DC_DAT	570	/* Read-only data register */
17 
18 /* Misc Debug */
19 #define SPRN_DPDR	630
20 #define SPRN_MI_CAM	816
21 #define SPRN_MI_RAM0	817
22 #define SPRN_MI_RAM1	818
23 #define SPRN_MD_CAM	824
24 #define SPRN_MD_RAM0	825
25 #define SPRN_MD_RAM1	826
26 
27 /* Special MSR manipulation registers */
28 #define SPRN_EIE	80	/* External interrupt enable (EE=1, RI=1) */
29 #define SPRN_EID	81	/* External interrupt disable (EE=0, RI=1) */
30 #define SPRN_NRI	82	/* Non recoverable interrupt (EE=0, RI=0) */
31 
32 /* Debug registers */
33 #define SPRN_CMPA	144
34 #define SPRN_COUNTA	150
35 #define SPRN_CMPE	152
36 #define SPRN_CMPF	153
37 #define SPRN_LCTRL1	156
38 #define   LCTRL1_CTE_GT		0xc0000000
39 #define   LCTRL1_CTF_LT		0x14000000
40 #define   LCTRL1_CRWE_RW	0x00000000
41 #define   LCTRL1_CRWE_RO	0x00040000
42 #define   LCTRL1_CRWE_WO	0x000c0000
43 #define   LCTRL1_CRWF_RW	0x00000000
44 #define   LCTRL1_CRWF_RO	0x00010000
45 #define   LCTRL1_CRWF_WO	0x00030000
46 #define SPRN_LCTRL2	157
47 #define   LCTRL2_LW0EN		0x80000000
48 #define   LCTRL2_LW0LA_E	0x00000000
49 #define   LCTRL2_LW0LA_F	0x04000000
50 #define   LCTRL2_LW0LA_EandF	0x08000000
51 #define   LCTRL2_LW0LADC	0x02000000
52 #define   LCTRL2_SLW0EN		0x00000002
53 #ifdef CONFIG_PPC_8xx
54 #define SPRN_ICTRL	158
55 #endif
56 #define SPRN_BAR	159
57 
58 /* Commands.  Only the first few are available to the instruction cache.
59 */
60 #define	IDC_ENABLE	0x02000000	/* Cache enable */
61 #define IDC_DISABLE	0x04000000	/* Cache disable */
62 #define IDC_LDLCK	0x06000000	/* Load and lock */
63 #define IDC_UNLINE	0x08000000	/* Unlock line */
64 #define IDC_UNALL	0x0a000000	/* Unlock all */
65 #define IDC_INVALL	0x0c000000	/* Invalidate all */
66 
67 #define DC_FLINE	0x0e000000	/* Flush data cache line */
68 #define DC_SFWT		0x01000000	/* Set forced writethrough mode */
69 #define DC_CFWT		0x03000000	/* Clear forced writethrough mode */
70 #define DC_SLES		0x05000000	/* Set little endian swap mode */
71 #define DC_CLES		0x07000000	/* Clear little endian swap mode */
72 
73 /* Status.
74 */
75 #define IDC_ENABLED	0x80000000	/* Cache is enabled */
76 #define IDC_CERR1	0x00200000	/* Cache error 1 */
77 #define IDC_CERR2	0x00100000	/* Cache error 2 */
78 #define IDC_CERR3	0x00080000	/* Cache error 3 */
79 
80 #define DC_DFWT		0x40000000	/* Data cache is forced write through */
81 #define DC_LES		0x20000000	/* Caches are little endian mode */
82 
83 #endif /* _ASM_POWERPC_REG_8xx_H */
84