xref: /openbmc/u-boot/arch/powerpc/include/asm/mmu.h (revision 98f705c9cefdfdba62c069821bbba10273a0a8ed)
1a47a12beSStefan Roese /*
2a47a12beSStefan Roese  * PowerPC memory management structures
3a47a12beSStefan Roese  */
4a47a12beSStefan Roese 
5a47a12beSStefan Roese #ifndef _PPC_MMU_H_
6a47a12beSStefan Roese #define _PPC_MMU_H_
7a47a12beSStefan Roese 
8a47a12beSStefan Roese #ifndef __ASSEMBLY__
9a47a12beSStefan Roese /* Hardware Page Table Entry */
10a47a12beSStefan Roese typedef struct _PTE {
11a47a12beSStefan Roese #ifdef CONFIG_PPC64BRIDGE
12a47a12beSStefan Roese 	unsigned long long vsid:52;
13a47a12beSStefan Roese 	unsigned long api:5;
14a47a12beSStefan Roese 	unsigned long :5;
15a47a12beSStefan Roese 	unsigned long h:1;
16a47a12beSStefan Roese 	unsigned long v:1;
17a47a12beSStefan Roese 	unsigned long long rpn:52;
18a47a12beSStefan Roese #else /* CONFIG_PPC64BRIDGE */
19a47a12beSStefan Roese 	unsigned long v:1;	/* Entry is valid */
20a47a12beSStefan Roese 	unsigned long vsid:24;	/* Virtual segment identifier */
21a47a12beSStefan Roese 	unsigned long h:1;	/* Hash algorithm indicator */
22a47a12beSStefan Roese 	unsigned long api:6;	/* Abbreviated page index */
23a47a12beSStefan Roese 	unsigned long rpn:20;	/* Real (physical) page number */
24a47a12beSStefan Roese #endif /* CONFIG_PPC64BRIDGE */
25a47a12beSStefan Roese 	unsigned long    :3;	/* Unused */
26a47a12beSStefan Roese 	unsigned long r:1;	/* Referenced */
27a47a12beSStefan Roese 	unsigned long c:1;	/* Changed */
28a47a12beSStefan Roese 	unsigned long w:1;	/* Write-thru cache mode */
29a47a12beSStefan Roese 	unsigned long i:1;	/* Cache inhibited */
30a47a12beSStefan Roese 	unsigned long m:1;	/* Memory coherence */
31a47a12beSStefan Roese 	unsigned long g:1;	/* Guarded */
32a47a12beSStefan Roese 	unsigned long  :1;	/* Unused */
33a47a12beSStefan Roese 	unsigned long pp:2;	/* Page protection */
34a47a12beSStefan Roese } PTE;
35a47a12beSStefan Roese 
36a47a12beSStefan Roese /* Values for PP (assumes Ks=0, Kp=1) */
37a47a12beSStefan Roese #define PP_RWXX	0	/* Supervisor read/write, User none */
38a47a12beSStefan Roese #define PP_RWRX 1	/* Supervisor read/write, User read */
39a47a12beSStefan Roese #define PP_RWRW 2	/* Supervisor read/write, User read/write */
40a47a12beSStefan Roese #define PP_RXRX 3	/* Supervisor read,       User read */
41a47a12beSStefan Roese 
42a47a12beSStefan Roese /* Segment Register */
43a47a12beSStefan Roese typedef struct _SEGREG {
44a47a12beSStefan Roese 	unsigned long t:1;	/* Normal or I/O  type */
45a47a12beSStefan Roese 	unsigned long ks:1;	/* Supervisor 'key' (normally 0) */
46a47a12beSStefan Roese 	unsigned long kp:1;	/* User 'key' (normally 1) */
47a47a12beSStefan Roese 	unsigned long n:1;	/* No-execute */
48a47a12beSStefan Roese 	unsigned long :4;	/* Unused */
49a47a12beSStefan Roese 	unsigned long vsid:24;	/* Virtual Segment Identifier */
50a47a12beSStefan Roese } SEGREG;
51a47a12beSStefan Roese 
52a47a12beSStefan Roese /* Block Address Translation (BAT) Registers */
53a47a12beSStefan Roese typedef struct _P601_BATU {	/* Upper part of BAT for 601 processor */
54a47a12beSStefan Roese 	unsigned long bepi:15;	/* Effective page index (virtual address) */
55a47a12beSStefan Roese 	unsigned long :8;	/* unused */
56a47a12beSStefan Roese 	unsigned long w:1;
57a47a12beSStefan Roese 	unsigned long i:1;	/* Cache inhibit */
58a47a12beSStefan Roese 	unsigned long m:1;	/* Memory coherence */
59a47a12beSStefan Roese 	unsigned long ks:1;	/* Supervisor key (normally 0) */
60a47a12beSStefan Roese 	unsigned long kp:1;	/* User key (normally 1) */
61a47a12beSStefan Roese 	unsigned long pp:2;	/* Page access protections */
62a47a12beSStefan Roese } P601_BATU;
63a47a12beSStefan Roese 
64a47a12beSStefan Roese typedef struct _BATU {		/* Upper part of BAT (all except 601) */
65a47a12beSStefan Roese #ifdef CONFIG_PPC64BRIDGE
66a47a12beSStefan Roese 	unsigned long long bepi:47;
67a47a12beSStefan Roese #else /* CONFIG_PPC64BRIDGE */
68a47a12beSStefan Roese 	unsigned long bepi:15;	/* Effective page index (virtual address) */
69a47a12beSStefan Roese #endif /* CONFIG_PPC64BRIDGE */
70a47a12beSStefan Roese 	unsigned long :4;	/* Unused */
71a47a12beSStefan Roese 	unsigned long bl:11;	/* Block size mask */
72a47a12beSStefan Roese 	unsigned long vs:1;	/* Supervisor valid */
73a47a12beSStefan Roese 	unsigned long vp:1;	/* User valid */
74a47a12beSStefan Roese } BATU;
75a47a12beSStefan Roese 
76a47a12beSStefan Roese typedef struct _P601_BATL {	/* Lower part of BAT for 601 processor */
77a47a12beSStefan Roese 	unsigned long brpn:15;	/* Real page index (physical address) */
78a47a12beSStefan Roese 	unsigned long :10;	/* Unused */
79a47a12beSStefan Roese 	unsigned long v:1;	/* Valid bit */
80a47a12beSStefan Roese 	unsigned long bl:6;	/* Block size mask */
81a47a12beSStefan Roese } P601_BATL;
82a47a12beSStefan Roese 
83a47a12beSStefan Roese typedef struct _BATL {		/* Lower part of BAT (all except 601) */
84a47a12beSStefan Roese #ifdef CONFIG_PPC64BRIDGE
85a47a12beSStefan Roese 	unsigned long long brpn:47;
86a47a12beSStefan Roese #else /* CONFIG_PPC64BRIDGE */
87a47a12beSStefan Roese 	unsigned long brpn:15;	/* Real page index (physical address) */
88a47a12beSStefan Roese #endif /* CONFIG_PPC64BRIDGE */
89a47a12beSStefan Roese 	unsigned long :10;	/* Unused */
90a47a12beSStefan Roese 	unsigned long w:1;	/* Write-thru cache */
91a47a12beSStefan Roese 	unsigned long i:1;	/* Cache inhibit */
92a47a12beSStefan Roese 	unsigned long m:1;	/* Memory coherence */
93a47a12beSStefan Roese 	unsigned long g:1;	/* Guarded (MBZ in IBAT) */
94a47a12beSStefan Roese 	unsigned long :1;	/* Unused */
95a47a12beSStefan Roese 	unsigned long pp:2;	/* Page access protections */
96a47a12beSStefan Roese } BATL;
97a47a12beSStefan Roese 
98a47a12beSStefan Roese typedef struct _BAT {
99a47a12beSStefan Roese 	BATU batu;		/* Upper register */
100a47a12beSStefan Roese 	BATL batl;		/* Lower register */
101a47a12beSStefan Roese } BAT;
102a47a12beSStefan Roese 
103a47a12beSStefan Roese typedef struct _P601_BAT {
104a47a12beSStefan Roese 	P601_BATU batu;		/* Upper register */
105a47a12beSStefan Roese 	P601_BATL batl;		/* Lower register */
106a47a12beSStefan Roese } P601_BAT;
107a47a12beSStefan Roese 
108a47a12beSStefan Roese /*
109a47a12beSStefan Roese  * Simulated two-level MMU.  This structure is used by the kernel
110a47a12beSStefan Roese  * to keep track of MMU mappings and is used to update/maintain
111a47a12beSStefan Roese  * the hardware HASH table which is really a cache of mappings.
112a47a12beSStefan Roese  *
113a47a12beSStefan Roese  * The simulated structures mimic the hardware available on other
114a47a12beSStefan Roese  * platforms, notably the 80x86 and 680x0.
115a47a12beSStefan Roese  */
116a47a12beSStefan Roese 
117a47a12beSStefan Roese typedef struct _pte {
118a47a12beSStefan Roese 	unsigned long page_num:20;
119a47a12beSStefan Roese 	unsigned long flags:12;		/* Page flags (some unused bits) */
120a47a12beSStefan Roese } pte;
121a47a12beSStefan Roese 
122a47a12beSStefan Roese #define PD_SHIFT (10+12)		/* Page directory */
123a47a12beSStefan Roese #define PD_MASK  0x02FF
124a47a12beSStefan Roese #define PT_SHIFT (12)			/* Page Table */
125a47a12beSStefan Roese #define PT_MASK  0x02FF
126a47a12beSStefan Roese #define PG_SHIFT (12)			/* Page Entry */
127a47a12beSStefan Roese 
128a47a12beSStefan Roese 
129a47a12beSStefan Roese /* MMU context */
130a47a12beSStefan Roese 
131a47a12beSStefan Roese typedef struct _MMU_context {
132a47a12beSStefan Roese 	SEGREG	segs[16];	/* Segment registers */
133a47a12beSStefan Roese 	pte	**pmap;		/* Two-level page-map structure */
134a47a12beSStefan Roese } MMU_context;
135a47a12beSStefan Roese 
136a47a12beSStefan Roese extern void _tlbie(unsigned long va);	/* invalidate a TLB entry */
137a47a12beSStefan Roese extern void _tlbia(void);		/* invalidate all TLB entries */
138a47a12beSStefan Roese 
139a47a12beSStefan Roese #ifdef CONFIG_ADDR_MAP
140a47a12beSStefan Roese extern void init_addr_map(void);
141a47a12beSStefan Roese #endif
142a47a12beSStefan Roese 
143a47a12beSStefan Roese typedef enum {
144a47a12beSStefan Roese 	IBAT0 = 0, IBAT1, IBAT2, IBAT3,
145a47a12beSStefan Roese 	DBAT0, DBAT1, DBAT2, DBAT3,
146a47a12beSStefan Roese #ifdef CONFIG_HIGH_BATS
147a47a12beSStefan Roese 	IBAT4, IBAT5, IBAT6, IBAT7,
148a47a12beSStefan Roese 	DBAT4, DBAT5, DBAT6, DBAT7
149a47a12beSStefan Roese #endif
150a47a12beSStefan Roese } ppc_bat_t;
151a47a12beSStefan Roese 
152a47a12beSStefan Roese extern int read_bat(ppc_bat_t bat, unsigned long *upper, unsigned long *lower);
153a47a12beSStefan Roese extern int write_bat(ppc_bat_t bat, unsigned long upper, unsigned long lower);
154a47a12beSStefan Roese extern void print_bats(void);
155a47a12beSStefan Roese 
156a47a12beSStefan Roese #endif /* __ASSEMBLY__ */
157a47a12beSStefan Roese 
158a47a12beSStefan Roese #define BATU_VS                 0x00000002
159a47a12beSStefan Roese #define BATU_VP                 0x00000001
160a47a12beSStefan Roese #define BATU_INVALID            0x00000000
161a47a12beSStefan Roese 
162a47a12beSStefan Roese #define BATL_WRITETHROUGH       0x00000040
163a47a12beSStefan Roese #define BATL_CACHEINHIBIT       0x00000020
164a47a12beSStefan Roese #define BATL_MEMCOHERENCE	0x00000010
165a47a12beSStefan Roese #define BATL_GUARDEDSTORAGE     0x00000008
166a47a12beSStefan Roese #define BATL_NO_ACCESS		0x00000000
167a47a12beSStefan Roese 
168a47a12beSStefan Roese #define BATL_PP_MSK		0x00000003
169a47a12beSStefan Roese #define BATL_PP_00		0x00000000 /* No access */
170a47a12beSStefan Roese #define BATL_PP_01		0x00000001 /* Read-only */
171a47a12beSStefan Roese #define BATL_PP_10		0x00000002 /* Read-write */
172a47a12beSStefan Roese #define BATL_PP_11		0x00000003
173a47a12beSStefan Roese 
174a47a12beSStefan Roese #define BATL_PP_NO_ACCESS	BATL_PP_00
175a47a12beSStefan Roese #define BATL_PP_RO		BATL_PP_01
176a47a12beSStefan Roese #define BATL_PP_RW		BATL_PP_10
177a47a12beSStefan Roese 
178a47a12beSStefan Roese /* BAT Block size values */
179a47a12beSStefan Roese #define BATU_BL_128K            0x00000000
180a47a12beSStefan Roese #define BATU_BL_256K            0x00000004
181a47a12beSStefan Roese #define BATU_BL_512K            0x0000000c
182a47a12beSStefan Roese #define BATU_BL_1M              0x0000001c
183a47a12beSStefan Roese #define BATU_BL_2M              0x0000003c
184a47a12beSStefan Roese #define BATU_BL_4M              0x0000007c
185a47a12beSStefan Roese #define BATU_BL_8M              0x000000fc
186a47a12beSStefan Roese #define BATU_BL_16M             0x000001fc
187a47a12beSStefan Roese #define BATU_BL_32M             0x000003fc
188a47a12beSStefan Roese #define BATU_BL_64M             0x000007fc
189a47a12beSStefan Roese #define BATU_BL_128M            0x00000ffc
190a47a12beSStefan Roese #define BATU_BL_256M            0x00001ffc
191a47a12beSStefan Roese 
192a47a12beSStefan Roese /* Block lengths for processors that support extended block length */
193a47a12beSStefan Roese #ifdef HID0_XBSEN
194a47a12beSStefan Roese #define BATU_BL_512M            0x00003ffc
195a47a12beSStefan Roese #define BATU_BL_1G              0x00007ffc
196a47a12beSStefan Roese #define BATU_BL_2G              0x0000fffc
197a47a12beSStefan Roese #define BATU_BL_4G              0x0001fffc
198a47a12beSStefan Roese #define BATU_BL_MAX		BATU_BL_4G
199a47a12beSStefan Roese #else
200a47a12beSStefan Roese #define BATU_BL_MAX		BATU_BL_256M
201a47a12beSStefan Roese #endif
202a47a12beSStefan Roese 
203a47a12beSStefan Roese /* BAT Access Protection */
204a47a12beSStefan Roese #define BPP_XX	0x00		/* No access */
205a47a12beSStefan Roese #define BPP_RX	0x01		/* Read only */
206a47a12beSStefan Roese #define BPP_RW	0x02		/* Read/write */
207a47a12beSStefan Roese 
208a47a12beSStefan Roese /* Macros to get values from BATs, once data is in the BAT register format */
209a47a12beSStefan Roese #define BATU_VALID(x) (x & 0x3)
210a47a12beSStefan Roese #define BATU_VADDR(x) (x & 0xfffe0000)
211a47a12beSStefan Roese #define BATL_PADDR(x) ((phys_addr_t)((x & 0xfffe0000)		\
212a47a12beSStefan Roese 				     | ((x & 0x0e00ULL) << 24)	\
213a47a12beSStefan Roese 				     | ((x & 0x04ULL) << 30)))
214a47a12beSStefan Roese #define BATU_SIZE(x) (1ULL << (fls((x & BATU_BL_MAX) >> 2) + 17))
215a47a12beSStefan Roese 
216a47a12beSStefan Roese /* bytes into BATU_BL */
217a47a12beSStefan Roese #define TO_BATU_BL(x) \
218a47a12beSStefan Roese 	(u32)((((1ull << __ilog2_u64((u64)x)) / (128 * 1024)) - 1) * 4)
219a47a12beSStefan Roese 
220a47a12beSStefan Roese /* Used to set up SDR1 register */
221a47a12beSStefan Roese #define HASH_TABLE_SIZE_64K	0x00010000
222a47a12beSStefan Roese #define HASH_TABLE_SIZE_128K	0x00020000
223a47a12beSStefan Roese #define HASH_TABLE_SIZE_256K	0x00040000
224a47a12beSStefan Roese #define HASH_TABLE_SIZE_512K	0x00080000
225a47a12beSStefan Roese #define HASH_TABLE_SIZE_1M	0x00100000
226a47a12beSStefan Roese #define HASH_TABLE_SIZE_2M	0x00200000
227a47a12beSStefan Roese #define HASH_TABLE_SIZE_4M	0x00400000
228a47a12beSStefan Roese #define HASH_TABLE_MASK_64K	0x000
229a47a12beSStefan Roese #define HASH_TABLE_MASK_128K	0x001
230a47a12beSStefan Roese #define HASH_TABLE_MASK_256K	0x003
231a47a12beSStefan Roese #define HASH_TABLE_MASK_512K	0x007
232a47a12beSStefan Roese #define HASH_TABLE_MASK_1M	0x00F
233a47a12beSStefan Roese #define HASH_TABLE_MASK_2M	0x01F
234a47a12beSStefan Roese #define HASH_TABLE_MASK_4M	0x03F
235a47a12beSStefan Roese 
236a47a12beSStefan Roese /* Control/status registers for the MPC8xx.
237a47a12beSStefan Roese  * A write operation to these registers causes serialized access.
238a47a12beSStefan Roese  * During software tablewalk, the registers used perform mask/shift-add
239a47a12beSStefan Roese  * operations when written/read.  A TLB entry is created when the Mx_RPN
240a47a12beSStefan Roese  * is written, and the contents of several registers are used to
241a47a12beSStefan Roese  * create the entry.
242a47a12beSStefan Roese  */
243a47a12beSStefan Roese #define MI_CTR		784	/* Instruction TLB control register */
244a47a12beSStefan Roese #define MI_GPM		0x80000000	/* Set domain manager mode */
245a47a12beSStefan Roese #define MI_PPM		0x40000000	/* Set subpage protection */
246a47a12beSStefan Roese #define MI_CIDEF	0x20000000	/* Set cache inhibit when MMU dis */
247a47a12beSStefan Roese #define MI_RSV4I	0x08000000	/* Reserve 4 TLB entries */
248a47a12beSStefan Roese #define MI_PPCS		0x02000000	/* Use MI_RPN prob/priv state */
249a47a12beSStefan Roese #define MI_IDXMASK	0x00001f00	/* TLB index to be loaded */
250a47a12beSStefan Roese #define MI_RESETVAL	0x00000000	/* Value of register at reset */
251a47a12beSStefan Roese 
252a47a12beSStefan Roese /* These are the Ks and Kp from the PowerPC books.  For proper operation,
253a47a12beSStefan Roese  * Ks = 0, Kp = 1.
254a47a12beSStefan Roese  */
255a47a12beSStefan Roese #define MI_AP		786
256a47a12beSStefan Roese #define MI_Ks		0x80000000	/* Should not be set */
257a47a12beSStefan Roese #define MI_Kp		0x40000000	/* Should always be set */
258a47a12beSStefan Roese 
259a47a12beSStefan Roese /* The effective page number register.  When read, contains the information
260a47a12beSStefan Roese  * about the last instruction TLB miss.  When MI_RPN is written, bits in
261a47a12beSStefan Roese  * this register are used to create the TLB entry.
262a47a12beSStefan Roese  */
263a47a12beSStefan Roese #define MI_EPN		787
264a47a12beSStefan Roese #define MI_EPNMASK	0xfffff000	/* Effective page number for entry */
265a47a12beSStefan Roese #define MI_EVALID	0x00000200	/* Entry is valid */
266a47a12beSStefan Roese #define MI_ASIDMASK	0x0000000f	/* ASID match value */
267a47a12beSStefan Roese 					/* Reset value is undefined */
268a47a12beSStefan Roese 
269a47a12beSStefan Roese /* A "level 1" or "segment" or whatever you want to call it register.
270a47a12beSStefan Roese  * For the instruction TLB, it contains bits that get loaded into the
271a47a12beSStefan Roese  * TLB entry when the MI_RPN is written.
272a47a12beSStefan Roese  */
273a47a12beSStefan Roese #define MI_TWC		789
274a47a12beSStefan Roese #define MI_APG		0x000001e0	/* Access protection group (0) */
275a47a12beSStefan Roese #define MI_GUARDED	0x00000010	/* Guarded storage */
276a47a12beSStefan Roese #define MI_PSMASK	0x0000000c	/* Mask of page size bits */
277a47a12beSStefan Roese #define MI_PS8MEG	0x0000000c	/* 8M page size */
278a47a12beSStefan Roese #define MI_PS512K	0x00000004	/* 512K page size */
279a47a12beSStefan Roese #define MI_PS4K_16K	0x00000000	/* 4K or 16K page size */
280a47a12beSStefan Roese #define MI_SVALID	0x00000001	/* Segment entry is valid */
281a47a12beSStefan Roese 					/* Reset value is undefined */
282a47a12beSStefan Roese 
283a47a12beSStefan Roese /* Real page number.  Defined by the pte.  Writing this register
284a47a12beSStefan Roese  * causes a TLB entry to be created for the instruction TLB, using
285a47a12beSStefan Roese  * additional information from the MI_EPN, and MI_TWC registers.
286a47a12beSStefan Roese  */
287a47a12beSStefan Roese #define MI_RPN		790
288a47a12beSStefan Roese 
289a47a12beSStefan Roese /* Define an RPN value for mapping kernel memory to large virtual
290a47a12beSStefan Roese  * pages for boot initialization.  This has real page number of 0,
291a47a12beSStefan Roese  * large page size, shared page, cache enabled, and valid.
292a47a12beSStefan Roese  * Also mark all subpages valid and write access.
293a47a12beSStefan Roese  */
294a47a12beSStefan Roese #define MI_BOOTINIT	0x000001fd
295a47a12beSStefan Roese 
296a47a12beSStefan Roese #define MD_CTR		792	/* Data TLB control register */
297a47a12beSStefan Roese #define MD_GPM		0x80000000	/* Set domain manager mode */
298a47a12beSStefan Roese #define MD_PPM		0x40000000	/* Set subpage protection */
299a47a12beSStefan Roese #define MD_CIDEF	0x20000000	/* Set cache inhibit when MMU dis */
300a47a12beSStefan Roese #define MD_WTDEF	0x10000000	/* Set writethrough when MMU dis */
301a47a12beSStefan Roese #define MD_RSV4I	0x08000000	/* Reserve 4 TLB entries */
302a47a12beSStefan Roese #define MD_TWAM		0x04000000	/* Use 4K page hardware assist */
303a47a12beSStefan Roese #define MD_PPCS		0x02000000	/* Use MI_RPN prob/priv state */
304a47a12beSStefan Roese #define MD_IDXMASK	0x00001f00	/* TLB index to be loaded */
305a47a12beSStefan Roese #define MD_RESETVAL	0x04000000	/* Value of register at reset */
306a47a12beSStefan Roese 
307a47a12beSStefan Roese #define M_CASID		793	/* Address space ID (context) to match */
308a47a12beSStefan Roese #define MC_ASIDMASK	0x0000000f	/* Bits used for ASID value */
309a47a12beSStefan Roese 
310a47a12beSStefan Roese 
311a47a12beSStefan Roese /* These are the Ks and Kp from the PowerPC books.  For proper operation,
312a47a12beSStefan Roese  * Ks = 0, Kp = 1.
313a47a12beSStefan Roese  */
314a47a12beSStefan Roese #define MD_AP		794
315a47a12beSStefan Roese #define MD_Ks		0x80000000	/* Should not be set */
316a47a12beSStefan Roese #define MD_Kp		0x40000000	/* Should always be set */
317a47a12beSStefan Roese 
318a47a12beSStefan Roese /* The effective page number register.  When read, contains the information
319a47a12beSStefan Roese  * about the last instruction TLB miss.  When MD_RPN is written, bits in
320a47a12beSStefan Roese  * this register are used to create the TLB entry.
321a47a12beSStefan Roese  */
322a47a12beSStefan Roese #define MD_EPN		795
323a47a12beSStefan Roese #define MD_EPNMASK	0xfffff000	/* Effective page number for entry */
324a47a12beSStefan Roese #define MD_EVALID	0x00000200	/* Entry is valid */
325a47a12beSStefan Roese #define MD_ASIDMASK	0x0000000f	/* ASID match value */
326a47a12beSStefan Roese 					/* Reset value is undefined */
327a47a12beSStefan Roese 
328a47a12beSStefan Roese /* The pointer to the base address of the first level page table.
329a47a12beSStefan Roese  * During a software tablewalk, reading this register provides the address
330a47a12beSStefan Roese  * of the entry associated with MD_EPN.
331a47a12beSStefan Roese  */
332a47a12beSStefan Roese #define M_TWB		796
333a47a12beSStefan Roese #define	M_L1TB		0xfffff000	/* Level 1 table base address */
334a47a12beSStefan Roese #define M_L1INDX	0x00000ffc	/* Level 1 index, when read */
335a47a12beSStefan Roese 					/* Reset value is undefined */
336a47a12beSStefan Roese 
337a47a12beSStefan Roese /* A "level 1" or "segment" or whatever you want to call it register.
338a47a12beSStefan Roese  * For the data TLB, it contains bits that get loaded into the TLB entry
339a47a12beSStefan Roese  * when the MD_RPN is written.  It is also provides the hardware assist
340a47a12beSStefan Roese  * for finding the PTE address during software tablewalk.
341a47a12beSStefan Roese  */
342a47a12beSStefan Roese #define MD_TWC		797
343a47a12beSStefan Roese #define MD_L2TB		0xfffff000	/* Level 2 table base address */
344a47a12beSStefan Roese #define MD_L2INDX	0xfffffe00	/* Level 2 index (*pte), when read */
345a47a12beSStefan Roese #define MD_APG		0x000001e0	/* Access protection group (0) */
346a47a12beSStefan Roese #define MD_GUARDED	0x00000010	/* Guarded storage */
347a47a12beSStefan Roese #define MD_PSMASK	0x0000000c	/* Mask of page size bits */
348a47a12beSStefan Roese #define MD_PS8MEG	0x0000000c	/* 8M page size */
349a47a12beSStefan Roese #define MD_PS512K	0x00000004	/* 512K page size */
350a47a12beSStefan Roese #define MD_PS4K_16K	0x00000000	/* 4K or 16K page size */
351a47a12beSStefan Roese #define MD_WT		0x00000002	/* Use writethrough page attribute */
352a47a12beSStefan Roese #define MD_SVALID	0x00000001	/* Segment entry is valid */
353a47a12beSStefan Roese 					/* Reset value is undefined */
354a47a12beSStefan Roese 
355a47a12beSStefan Roese 
356a47a12beSStefan Roese /* Real page number.  Defined by the pte.  Writing this register
357a47a12beSStefan Roese  * causes a TLB entry to be created for the data TLB, using
358a47a12beSStefan Roese  * additional information from the MD_EPN, and MD_TWC registers.
359a47a12beSStefan Roese  */
360a47a12beSStefan Roese #define MD_RPN		798
361a47a12beSStefan Roese 
362a47a12beSStefan Roese /* This is a temporary storage register that could be used to save
363a47a12beSStefan Roese  * a processor working register during a tablewalk.
364a47a12beSStefan Roese  */
365a47a12beSStefan Roese #define M_TW		799
366a47a12beSStefan Roese 
367a47a12beSStefan Roese /*
368a47a12beSStefan Roese  * At present, all PowerPC 400-class processors share a similar TLB
369a47a12beSStefan Roese  * architecture. The instruction and data sides share a unified,
370a47a12beSStefan Roese  * 64-entry, fully-associative TLB which is maintained totally under
371a47a12beSStefan Roese  * software control. In addition, the instruction side has a
372a47a12beSStefan Roese  * hardware-managed, 4-entry, fully- associative TLB which serves as a
373a47a12beSStefan Roese  * first level to the shared TLB. These two TLBs are known as the UTLB
374a47a12beSStefan Roese  * and ITLB, respectively.
375a47a12beSStefan Roese  */
376a47a12beSStefan Roese 
377a47a12beSStefan Roese #define        PPC4XX_TLB_SIZE 64
378a47a12beSStefan Roese 
379a47a12beSStefan Roese /*
380a47a12beSStefan Roese  * TLB entries are defined by a "high" tag portion and a "low" data
381a47a12beSStefan Roese  * portion.  On all architectures, the data portion is 32-bits.
382a47a12beSStefan Roese  *
383a47a12beSStefan Roese  * TLB entries are managed entirely under software control by reading,
384a47a12beSStefan Roese  * writing, and searchoing using the 4xx-specific tlbre, tlbwr, and tlbsx
385a47a12beSStefan Roese  * instructions.
386a47a12beSStefan Roese  */
387a47a12beSStefan Roese 
388a47a12beSStefan Roese /*
389a47a12beSStefan Roese  * FSL Book-E support
390a47a12beSStefan Roese  */
391a47a12beSStefan Roese 
392a47a12beSStefan Roese #define MAS0_TLBSEL_MSK	0x30000000
3935c4a3d43STimur Tabi #define MAS0_TLBSEL(x)	(((x) << 28) & MAS0_TLBSEL_MSK)
394a47a12beSStefan Roese #define MAS0_ESEL_MSK	0x0FFF0000
3955c4a3d43STimur Tabi #define MAS0_ESEL(x)	(((x) << 16) & MAS0_ESEL_MSK)
396a47a12beSStefan Roese #define MAS0_NV(x)	((x) & 0x00000FFF)
397a47a12beSStefan Roese 
398a47a12beSStefan Roese #define MAS1_VALID	0x80000000
399a47a12beSStefan Roese #define MAS1_IPROT	0x40000000
4005c4a3d43STimur Tabi #define MAS1_TID(x)	(((x) << 16) & 0x3FFF0000)
401a47a12beSStefan Roese #define MAS1_TS		0x00001000
40231d084ddSScott Wood #define MAS1_TSIZE(x)	(((x) << 7) & 0x00000F80)
40331d084ddSScott Wood #define TSIZE_TO_BYTES(x) (1ULL << ((x) + 10))
404a47a12beSStefan Roese 
405a47a12beSStefan Roese #define MAS2_EPN	0xFFFFF000
406a47a12beSStefan Roese #define MAS2_X0		0x00000040
407a47a12beSStefan Roese #define MAS2_X1		0x00000020
408a47a12beSStefan Roese #define MAS2_W		0x00000010
409a47a12beSStefan Roese #define MAS2_I		0x00000008
410a47a12beSStefan Roese #define MAS2_M		0x00000004
411a47a12beSStefan Roese #define MAS2_G		0x00000002
412a47a12beSStefan Roese #define MAS2_E		0x00000001
413a47a12beSStefan Roese 
414a47a12beSStefan Roese #define MAS3_RPN	0xFFFFF000
415a47a12beSStefan Roese #define MAS3_U0		0x00000200
416a47a12beSStefan Roese #define MAS3_U1		0x00000100
417a47a12beSStefan Roese #define MAS3_U2		0x00000080
418a47a12beSStefan Roese #define MAS3_U3		0x00000040
419a47a12beSStefan Roese #define MAS3_UX		0x00000020
420a47a12beSStefan Roese #define MAS3_SX		0x00000010
421a47a12beSStefan Roese #define MAS3_UW		0x00000008
422a47a12beSStefan Roese #define MAS3_SW		0x00000004
423a47a12beSStefan Roese #define MAS3_UR		0x00000002
424a47a12beSStefan Roese #define MAS3_SR		0x00000001
425a47a12beSStefan Roese 
426a47a12beSStefan Roese #define MAS4_TLBSELD(x) MAS0_TLBSEL(x)
427a47a12beSStefan Roese #define MAS4_TIDDSEL	0x000F0000
428a47a12beSStefan Roese #define MAS4_TSIZED(x)	MAS1_TSIZE(x)
429a47a12beSStefan Roese #define MAS4_X0D	0x00000040
430a47a12beSStefan Roese #define MAS4_X1D	0x00000020
431a47a12beSStefan Roese #define MAS4_WD		0x00000010
432a47a12beSStefan Roese #define MAS4_ID		0x00000008
433a47a12beSStefan Roese #define MAS4_MD		0x00000004
434a47a12beSStefan Roese #define MAS4_GD		0x00000002
435a47a12beSStefan Roese #define MAS4_ED		0x00000001
436a47a12beSStefan Roese 
437a47a12beSStefan Roese #define MAS6_SPID0	0x3FFF0000
438a47a12beSStefan Roese #define MAS6_SPID1	0x00007FFE
439a47a12beSStefan Roese #define MAS6_SAS	0x00000001
440a47a12beSStefan Roese #define MAS6_SPID	MAS6_SPID0
441a47a12beSStefan Roese 
442a47a12beSStefan Roese #define MAS7_RPN	0xFFFFFFFF
443a47a12beSStefan Roese 
444a47a12beSStefan Roese #define FSL_BOOKE_MAS0(tlbsel,esel,nv) \
445a47a12beSStefan Roese 		(MAS0_TLBSEL(tlbsel) | MAS0_ESEL(esel) | MAS0_NV(nv))
446a47a12beSStefan Roese #define FSL_BOOKE_MAS1(v,iprot,tid,ts,tsize) \
447a47a12beSStefan Roese 		((((v) << 31) & MAS1_VALID)             |\
448a47a12beSStefan Roese 		(((iprot) << 30) & MAS1_IPROT)          |\
449a47a12beSStefan Roese 		(MAS1_TID(tid))				|\
450a47a12beSStefan Roese 		(((ts) << 12) & MAS1_TS)                |\
451a47a12beSStefan Roese 		(MAS1_TSIZE(tsize)))
452a47a12beSStefan Roese #define FSL_BOOKE_MAS2(epn, wimge) \
453a47a12beSStefan Roese 		(((epn) & MAS3_RPN) | (wimge))
454a47a12beSStefan Roese #define FSL_BOOKE_MAS3(rpn, user, perms) \
455a47a12beSStefan Roese 		(((rpn) & MAS3_RPN) | (user) | (perms))
456a47a12beSStefan Roese #define FSL_BOOKE_MAS7(rpn) \
457a47a12beSStefan Roese 		(((u64)(rpn)) >> 32)
458a47a12beSStefan Roese 
459a47a12beSStefan Roese #define BOOKE_PAGESZ_1K		0
46031d084ddSScott Wood #define BOOKE_PAGESZ_2K		1
46131d084ddSScott Wood #define BOOKE_PAGESZ_4K		2
46231d084ddSScott Wood #define BOOKE_PAGESZ_8K		3
46331d084ddSScott Wood #define BOOKE_PAGESZ_16K	4
46431d084ddSScott Wood #define BOOKE_PAGESZ_32K	5
46531d084ddSScott Wood #define BOOKE_PAGESZ_64K	6
46631d084ddSScott Wood #define BOOKE_PAGESZ_128K	7
46731d084ddSScott Wood #define BOOKE_PAGESZ_256K	8
46831d084ddSScott Wood #define BOOKE_PAGESZ_512K	9
46931d084ddSScott Wood #define BOOKE_PAGESZ_1M		10
47031d084ddSScott Wood #define BOOKE_PAGESZ_2M		11
47131d084ddSScott Wood #define BOOKE_PAGESZ_4M		12
47231d084ddSScott Wood #define BOOKE_PAGESZ_8M		13
47331d084ddSScott Wood #define BOOKE_PAGESZ_16M	14
47431d084ddSScott Wood #define BOOKE_PAGESZ_32M	15
47531d084ddSScott Wood #define BOOKE_PAGESZ_64M	16
47631d084ddSScott Wood #define BOOKE_PAGESZ_128M	17
47731d084ddSScott Wood #define BOOKE_PAGESZ_256M	18
47831d084ddSScott Wood #define BOOKE_PAGESZ_512M	19
47931d084ddSScott Wood #define BOOKE_PAGESZ_1G		20
48031d084ddSScott Wood #define BOOKE_PAGESZ_2G		21
48131d084ddSScott Wood #define BOOKE_PAGESZ_4G		22
48231d084ddSScott Wood #define BOOKE_PAGESZ_8G		23
48331d084ddSScott Wood #define BOOKE_PAGESZ_16GB	24
48431d084ddSScott Wood #define BOOKE_PAGESZ_32GB	25
48531d084ddSScott Wood #define BOOKE_PAGESZ_64GB	26
48631d084ddSScott Wood #define BOOKE_PAGESZ_128GB	27
48731d084ddSScott Wood #define BOOKE_PAGESZ_256GB	28
48831d084ddSScott Wood #define BOOKE_PAGESZ_512GB	29
48931d084ddSScott Wood #define BOOKE_PAGESZ_1TB	30
49031d084ddSScott Wood #define BOOKE_PAGESZ_2TB	31
491a47a12beSStefan Roese 
4923ea21536SScott Wood #define TLBIVAX_ALL		4
4933ea21536SScott Wood #define TLBIVAX_TLB0		0
4943ea21536SScott Wood #define TLBIVAX_TLB1		8
4953ea21536SScott Wood 
496a47a12beSStefan Roese #ifdef CONFIG_E500
497a47a12beSStefan Roese #ifndef __ASSEMBLY__
498a47a12beSStefan Roese extern void set_tlb(u8 tlb, u32 epn, u64 rpn,
499a47a12beSStefan Roese 		    u8 perms, u8 wimge,
500a47a12beSStefan Roese 		    u8 ts, u8 esel, u8 tsize, u8 iprot);
501a47a12beSStefan Roese extern void disable_tlb(u8 esel);
502a47a12beSStefan Roese extern void invalidate_tlb(u8 tlb);
503a47a12beSStefan Roese extern void init_tlbs(void);
504a47a12beSStefan Roese extern int find_tlb_idx(void *addr, u8 tlbsel);
505a47a12beSStefan Roese extern void init_used_tlb_cams(void);
506a47a12beSStefan Roese extern int find_free_tlbcam(void);
50770e02bcaSBecky Bruce extern void print_tlbcam(void);
508a47a12beSStefan Roese 
509a47a12beSStefan Roese extern unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg);
5109cdfe281SBecky Bruce extern void clear_ddr_tlbs(unsigned int memsize_in_meg);
511a47a12beSStefan Roese 
512*f29f804aSAlexander Graf enum tlb_map_type {
513*f29f804aSAlexander Graf 	TLB_MAP_RAM,
514*f29f804aSAlexander Graf 	TLB_MAP_IO,
515*f29f804aSAlexander Graf };
516*f29f804aSAlexander Graf 
517*f29f804aSAlexander Graf extern uint64_t tlb_map_range(ulong v_addr, phys_addr_t p_addr, uint64_t size,
518*f29f804aSAlexander Graf 			      enum tlb_map_type map_type);
519*f29f804aSAlexander Graf 
520a47a12beSStefan Roese extern void write_tlb(u32 _mas0, u32 _mas1, u32 _mas2, u32 _mas3, u32 _mas7);
521a47a12beSStefan Roese 
522a47a12beSStefan Roese #define SET_TLB_ENTRY(_tlb, _epn, _rpn, _perms, _wimge, _ts, _esel, _sz, _iprot) \
523a47a12beSStefan Roese 	{ .mas0 = FSL_BOOKE_MAS0(_tlb, _esel, 0), \
524a47a12beSStefan Roese 	  .mas1 = FSL_BOOKE_MAS1(1, _iprot, 0, _ts, _sz), \
525a47a12beSStefan Roese 	  .mas2 = FSL_BOOKE_MAS2(_epn, _wimge), \
526a47a12beSStefan Roese 	  .mas3 = FSL_BOOKE_MAS3(_rpn, 0, _perms), \
527a47a12beSStefan Roese 	  .mas7 = FSL_BOOKE_MAS7(_rpn), }
528a47a12beSStefan Roese 
529a47a12beSStefan Roese struct fsl_e_tlb_entry {
530a47a12beSStefan Roese 	u32	mas0;
531a47a12beSStefan Roese 	u32	mas1;
532a47a12beSStefan Roese 	u32	mas2;
533a47a12beSStefan Roese 	u32	mas3;
534a47a12beSStefan Roese 	u32	mas7;
535a47a12beSStefan Roese };
536a47a12beSStefan Roese 
537a47a12beSStefan Roese extern struct fsl_e_tlb_entry tlb_table[];
538a47a12beSStefan Roese extern int num_tlb_entries;
539a47a12beSStefan Roese #endif
540a47a12beSStefan Roese #endif
541a47a12beSStefan Roese 
542a47a12beSStefan Roese #ifdef CONFIG_E300
543a47a12beSStefan Roese #define LAWAR_EN		0x80000000
544a47a12beSStefan Roese #define LAWAR_SIZE		0x0000003F
545a47a12beSStefan Roese 
546a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCI	0x00000000
547a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCI1	0x00000000
548a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCIX	0x00000000
549a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCI2	0x00100000
550a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCIE1	0x00200000
551a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCIE2	0x00100000
552a47a12beSStefan Roese #define LAWAR_TRGT_IF_PCIE3	0x00300000
553a47a12beSStefan Roese #define LAWAR_TRGT_IF_LBC	0x00400000
554a47a12beSStefan Roese #define LAWAR_TRGT_IF_CCSR	0x00800000
555a47a12beSStefan Roese #define LAWAR_TRGT_IF_DDR_INTERLEAVED 0x00B00000
556a47a12beSStefan Roese #define LAWAR_TRGT_IF_RIO	0x00c00000
557a47a12beSStefan Roese #define LAWAR_TRGT_IF_DDR	0x00f00000
558a47a12beSStefan Roese #define LAWAR_TRGT_IF_DDR1	0x00f00000
559a47a12beSStefan Roese #define LAWAR_TRGT_IF_DDR2	0x01600000
560a47a12beSStefan Roese 
561a47a12beSStefan Roese #define LAWAR_SIZE_BASE		0xa
562a47a12beSStefan Roese #define LAWAR_SIZE_4K		(LAWAR_SIZE_BASE+1)
563a47a12beSStefan Roese #define LAWAR_SIZE_8K		(LAWAR_SIZE_BASE+2)
564a47a12beSStefan Roese #define LAWAR_SIZE_16K		(LAWAR_SIZE_BASE+3)
565a47a12beSStefan Roese #define LAWAR_SIZE_32K		(LAWAR_SIZE_BASE+4)
566a47a12beSStefan Roese #define LAWAR_SIZE_64K		(LAWAR_SIZE_BASE+5)
567a47a12beSStefan Roese #define LAWAR_SIZE_128K		(LAWAR_SIZE_BASE+6)
568a47a12beSStefan Roese #define LAWAR_SIZE_256K		(LAWAR_SIZE_BASE+7)
569a47a12beSStefan Roese #define LAWAR_SIZE_512K		(LAWAR_SIZE_BASE+8)
570a47a12beSStefan Roese #define LAWAR_SIZE_1M		(LAWAR_SIZE_BASE+9)
571a47a12beSStefan Roese #define LAWAR_SIZE_2M		(LAWAR_SIZE_BASE+10)
572a47a12beSStefan Roese #define LAWAR_SIZE_4M		(LAWAR_SIZE_BASE+11)
573a47a12beSStefan Roese #define LAWAR_SIZE_8M		(LAWAR_SIZE_BASE+12)
574a47a12beSStefan Roese #define LAWAR_SIZE_16M		(LAWAR_SIZE_BASE+13)
575a47a12beSStefan Roese #define LAWAR_SIZE_32M		(LAWAR_SIZE_BASE+14)
576a47a12beSStefan Roese #define LAWAR_SIZE_64M		(LAWAR_SIZE_BASE+15)
577a47a12beSStefan Roese #define LAWAR_SIZE_128M		(LAWAR_SIZE_BASE+16)
578a47a12beSStefan Roese #define LAWAR_SIZE_256M		(LAWAR_SIZE_BASE+17)
579a47a12beSStefan Roese #define LAWAR_SIZE_512M		(LAWAR_SIZE_BASE+18)
580a47a12beSStefan Roese #define LAWAR_SIZE_1G		(LAWAR_SIZE_BASE+19)
581a47a12beSStefan Roese #define LAWAR_SIZE_2G		(LAWAR_SIZE_BASE+20)
582a47a12beSStefan Roese #define LAWAR_SIZE_4G		(LAWAR_SIZE_BASE+21)
583a47a12beSStefan Roese #define LAWAR_SIZE_8G		(LAWAR_SIZE_BASE+22)
584a47a12beSStefan Roese #define LAWAR_SIZE_16G		(LAWAR_SIZE_BASE+23)
585a47a12beSStefan Roese #define LAWAR_SIZE_32G		(LAWAR_SIZE_BASE+24)
586a47a12beSStefan Roese #endif
587a47a12beSStefan Roese 
588a47a12beSStefan Roese #endif /* _PPC_MMU_H_ */
589