upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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486 lines
17 KiB
486 lines
17 KiB
/*
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* PowerPC memory management structures
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*/
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#ifndef _PPC_MMU_H_
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#define _PPC_MMU_H_
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#include <linux/config.h>
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#ifndef __ASSEMBLY__
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/* Hardware Page Table Entry */
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typedef struct _PTE {
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#ifdef CONFIG_PPC64BRIDGE
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unsigned long long vsid:52;
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unsigned long api:5;
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unsigned long :5;
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unsigned long h:1;
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unsigned long v:1;
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unsigned long long rpn:52;
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#else /* CONFIG_PPC64BRIDGE */
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unsigned long v:1; /* Entry is valid */
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unsigned long vsid:24; /* Virtual segment identifier */
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unsigned long h:1; /* Hash algorithm indicator */
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unsigned long api:6; /* Abbreviated page index */
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unsigned long rpn:20; /* Real (physical) page number */
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#endif /* CONFIG_PPC64BRIDGE */
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unsigned long :3; /* Unused */
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unsigned long r:1; /* Referenced */
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unsigned long c:1; /* Changed */
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unsigned long w:1; /* Write-thru cache mode */
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unsigned long i:1; /* Cache inhibited */
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unsigned long m:1; /* Memory coherence */
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unsigned long g:1; /* Guarded */
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unsigned long :1; /* Unused */
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unsigned long pp:2; /* Page protection */
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} PTE;
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/* Values for PP (assumes Ks=0, Kp=1) */
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#define PP_RWXX 0 /* Supervisor read/write, User none */
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#define PP_RWRX 1 /* Supervisor read/write, User read */
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#define PP_RWRW 2 /* Supervisor read/write, User read/write */
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#define PP_RXRX 3 /* Supervisor read, User read */
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/* Segment Register */
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typedef struct _SEGREG {
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unsigned long t:1; /* Normal or I/O type */
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unsigned long ks:1; /* Supervisor 'key' (normally 0) */
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unsigned long kp:1; /* User 'key' (normally 1) */
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unsigned long n:1; /* No-execute */
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unsigned long :4; /* Unused */
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unsigned long vsid:24; /* Virtual Segment Identifier */
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} SEGREG;
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/* Block Address Translation (BAT) Registers */
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typedef struct _P601_BATU { /* Upper part of BAT for 601 processor */
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unsigned long bepi:15; /* Effective page index (virtual address) */
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unsigned long :8; /* unused */
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unsigned long w:1;
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unsigned long i:1; /* Cache inhibit */
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unsigned long m:1; /* Memory coherence */
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unsigned long ks:1; /* Supervisor key (normally 0) */
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unsigned long kp:1; /* User key (normally 1) */
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unsigned long pp:2; /* Page access protections */
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} P601_BATU;
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typedef struct _BATU { /* Upper part of BAT (all except 601) */
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#ifdef CONFIG_PPC64BRIDGE
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unsigned long long bepi:47;
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#else /* CONFIG_PPC64BRIDGE */
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unsigned long bepi:15; /* Effective page index (virtual address) */
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#endif /* CONFIG_PPC64BRIDGE */
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unsigned long :4; /* Unused */
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unsigned long bl:11; /* Block size mask */
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unsigned long vs:1; /* Supervisor valid */
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unsigned long vp:1; /* User valid */
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} BATU;
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typedef struct _P601_BATL { /* Lower part of BAT for 601 processor */
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unsigned long brpn:15; /* Real page index (physical address) */
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unsigned long :10; /* Unused */
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unsigned long v:1; /* Valid bit */
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unsigned long bl:6; /* Block size mask */
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} P601_BATL;
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typedef struct _BATL { /* Lower part of BAT (all except 601) */
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#ifdef CONFIG_PPC64BRIDGE
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unsigned long long brpn:47;
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#else /* CONFIG_PPC64BRIDGE */
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unsigned long brpn:15; /* Real page index (physical address) */
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#endif /* CONFIG_PPC64BRIDGE */
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unsigned long :10; /* Unused */
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unsigned long w:1; /* Write-thru cache */
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unsigned long i:1; /* Cache inhibit */
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unsigned long m:1; /* Memory coherence */
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unsigned long g:1; /* Guarded (MBZ in IBAT) */
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unsigned long :1; /* Unused */
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unsigned long pp:2; /* Page access protections */
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} BATL;
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typedef struct _BAT {
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BATU batu; /* Upper register */
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BATL batl; /* Lower register */
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} BAT;
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typedef struct _P601_BAT {
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P601_BATU batu; /* Upper register */
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P601_BATL batl; /* Lower register */
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} P601_BAT;
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/*
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* Simulated two-level MMU. This structure is used by the kernel
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* to keep track of MMU mappings and is used to update/maintain
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* the hardware HASH table which is really a cache of mappings.
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*
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* The simulated structures mimic the hardware available on other
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* platforms, notably the 80x86 and 680x0.
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*/
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typedef struct _pte {
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unsigned long page_num:20;
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unsigned long flags:12; /* Page flags (some unused bits) */
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} pte;
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#define PD_SHIFT (10+12) /* Page directory */
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#define PD_MASK 0x02FF
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#define PT_SHIFT (12) /* Page Table */
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#define PT_MASK 0x02FF
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#define PG_SHIFT (12) /* Page Entry */
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/* MMU context */
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typedef struct _MMU_context {
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SEGREG segs[16]; /* Segment registers */
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pte **pmap; /* Two-level page-map structure */
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} MMU_context;
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extern void _tlbie(unsigned long va); /* invalidate a TLB entry */
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extern void _tlbia(void); /* invalidate all TLB entries */
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typedef enum {
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IBAT0 = 0, IBAT1, IBAT2, IBAT3,
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DBAT0, DBAT1, DBAT2, DBAT3
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} ppc_bat_t;
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extern int read_bat(ppc_bat_t bat, unsigned long *upper, unsigned long *lower);
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extern int write_bat(ppc_bat_t bat, unsigned long upper, unsigned long lower);
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#endif /* __ASSEMBLY__ */
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/* Block size masks */
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#define BL_128K 0x000
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#define BL_256K 0x001
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#define BL_512K 0x003
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#define BL_1M 0x007
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#define BL_2M 0x00F
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#define BL_4M 0x01F
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#define BL_8M 0x03F
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#define BL_16M 0x07F
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#define BL_32M 0x0FF
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#define BL_64M 0x1FF
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#define BL_128M 0x3FF
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#define BL_256M 0x7FF
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/* BAT Access Protection */
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#define BPP_XX 0x00 /* No access */
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#define BPP_RX 0x01 /* Read only */
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#define BPP_RW 0x02 /* Read/write */
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/* Used to set up SDR1 register */
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#define HASH_TABLE_SIZE_64K 0x00010000
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#define HASH_TABLE_SIZE_128K 0x00020000
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#define HASH_TABLE_SIZE_256K 0x00040000
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#define HASH_TABLE_SIZE_512K 0x00080000
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#define HASH_TABLE_SIZE_1M 0x00100000
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#define HASH_TABLE_SIZE_2M 0x00200000
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#define HASH_TABLE_SIZE_4M 0x00400000
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#define HASH_TABLE_MASK_64K 0x000
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#define HASH_TABLE_MASK_128K 0x001
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#define HASH_TABLE_MASK_256K 0x003
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#define HASH_TABLE_MASK_512K 0x007
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#define HASH_TABLE_MASK_1M 0x00F
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#define HASH_TABLE_MASK_2M 0x01F
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#define HASH_TABLE_MASK_4M 0x03F
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/* Control/status registers for the MPC8xx.
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* A write operation to these registers causes serialized access.
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* During software tablewalk, the registers used perform mask/shift-add
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* operations when written/read. A TLB entry is created when the Mx_RPN
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* is written, and the contents of several registers are used to
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* create the entry.
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*/
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#define MI_CTR 784 /* Instruction TLB control register */
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#define MI_GPM 0x80000000 /* Set domain manager mode */
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#define MI_PPM 0x40000000 /* Set subpage protection */
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#define MI_CIDEF 0x20000000 /* Set cache inhibit when MMU dis */
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#define MI_RSV4I 0x08000000 /* Reserve 4 TLB entries */
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#define MI_PPCS 0x02000000 /* Use MI_RPN prob/priv state */
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#define MI_IDXMASK 0x00001f00 /* TLB index to be loaded */
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#define MI_RESETVAL 0x00000000 /* Value of register at reset */
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/* These are the Ks and Kp from the PowerPC books. For proper operation,
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* Ks = 0, Kp = 1.
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*/
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#define MI_AP 786
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#define MI_Ks 0x80000000 /* Should not be set */
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#define MI_Kp 0x40000000 /* Should always be set */
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/* The effective page number register. When read, contains the information
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* about the last instruction TLB miss. When MI_RPN is written, bits in
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* this register are used to create the TLB entry.
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*/
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#define MI_EPN 787
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#define MI_EPNMASK 0xfffff000 /* Effective page number for entry */
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#define MI_EVALID 0x00000200 /* Entry is valid */
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#define MI_ASIDMASK 0x0000000f /* ASID match value */
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/* Reset value is undefined */
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/* A "level 1" or "segment" or whatever you want to call it register.
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* For the instruction TLB, it contains bits that get loaded into the
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* TLB entry when the MI_RPN is written.
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*/
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#define MI_TWC 789
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#define MI_APG 0x000001e0 /* Access protection group (0) */
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#define MI_GUARDED 0x00000010 /* Guarded storage */
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#define MI_PSMASK 0x0000000c /* Mask of page size bits */
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#define MI_PS8MEG 0x0000000c /* 8M page size */
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#define MI_PS512K 0x00000004 /* 512K page size */
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#define MI_PS4K_16K 0x00000000 /* 4K or 16K page size */
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#define MI_SVALID 0x00000001 /* Segment entry is valid */
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/* Reset value is undefined */
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/* Real page number. Defined by the pte. Writing this register
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* causes a TLB entry to be created for the instruction TLB, using
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* additional information from the MI_EPN, and MI_TWC registers.
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*/
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#define MI_RPN 790
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/* Define an RPN value for mapping kernel memory to large virtual
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* pages for boot initialization. This has real page number of 0,
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* large page size, shared page, cache enabled, and valid.
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* Also mark all subpages valid and write access.
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*/
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#define MI_BOOTINIT 0x000001fd
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#define MD_CTR 792 /* Data TLB control register */
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#define MD_GPM 0x80000000 /* Set domain manager mode */
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#define MD_PPM 0x40000000 /* Set subpage protection */
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#define MD_CIDEF 0x20000000 /* Set cache inhibit when MMU dis */
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#define MD_WTDEF 0x10000000 /* Set writethrough when MMU dis */
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#define MD_RSV4I 0x08000000 /* Reserve 4 TLB entries */
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#define MD_TWAM 0x04000000 /* Use 4K page hardware assist */
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#define MD_PPCS 0x02000000 /* Use MI_RPN prob/priv state */
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#define MD_IDXMASK 0x00001f00 /* TLB index to be loaded */
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#define MD_RESETVAL 0x04000000 /* Value of register at reset */
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#define M_CASID 793 /* Address space ID (context) to match */
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#define MC_ASIDMASK 0x0000000f /* Bits used for ASID value */
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/* These are the Ks and Kp from the PowerPC books. For proper operation,
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* Ks = 0, Kp = 1.
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*/
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#define MD_AP 794
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#define MD_Ks 0x80000000 /* Should not be set */
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#define MD_Kp 0x40000000 /* Should always be set */
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/* The effective page number register. When read, contains the information
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* about the last instruction TLB miss. When MD_RPN is written, bits in
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* this register are used to create the TLB entry.
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*/
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#define MD_EPN 795
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#define MD_EPNMASK 0xfffff000 /* Effective page number for entry */
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#define MD_EVALID 0x00000200 /* Entry is valid */
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#define MD_ASIDMASK 0x0000000f /* ASID match value */
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/* Reset value is undefined */
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/* The pointer to the base address of the first level page table.
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* During a software tablewalk, reading this register provides the address
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* of the entry associated with MD_EPN.
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*/
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#define M_TWB 796
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#define M_L1TB 0xfffff000 /* Level 1 table base address */
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#define M_L1INDX 0x00000ffc /* Level 1 index, when read */
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/* Reset value is undefined */
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/* A "level 1" or "segment" or whatever you want to call it register.
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* For the data TLB, it contains bits that get loaded into the TLB entry
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* when the MD_RPN is written. It is also provides the hardware assist
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* for finding the PTE address during software tablewalk.
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*/
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#define MD_TWC 797
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#define MD_L2TB 0xfffff000 /* Level 2 table base address */
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#define MD_L2INDX 0xfffffe00 /* Level 2 index (*pte), when read */
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#define MD_APG 0x000001e0 /* Access protection group (0) */
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#define MD_GUARDED 0x00000010 /* Guarded storage */
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#define MD_PSMASK 0x0000000c /* Mask of page size bits */
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#define MD_PS8MEG 0x0000000c /* 8M page size */
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#define MD_PS512K 0x00000004 /* 512K page size */
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#define MD_PS4K_16K 0x00000000 /* 4K or 16K page size */
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#define MD_WT 0x00000002 /* Use writethrough page attribute */
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#define MD_SVALID 0x00000001 /* Segment entry is valid */
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/* Reset value is undefined */
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/* Real page number. Defined by the pte. Writing this register
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* causes a TLB entry to be created for the data TLB, using
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* additional information from the MD_EPN, and MD_TWC registers.
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*/
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#define MD_RPN 798
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/* This is a temporary storage register that could be used to save
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* a processor working register during a tablewalk.
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*/
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#define M_TW 799
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/*
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* At present, all PowerPC 400-class processors share a similar TLB
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* architecture. The instruction and data sides share a unified,
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* 64-entry, fully-associative TLB which is maintained totally under
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* software control. In addition, the instruction side has a
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* hardware-managed, 4-entry, fully- associative TLB which serves as a
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* first level to the shared TLB. These two TLBs are known as the UTLB
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* and ITLB, respectively.
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*/
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#define PPC4XX_TLB_SIZE 64
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/*
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* TLB entries are defined by a "high" tag portion and a "low" data
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* portion. On all architectures, the data portion is 32-bits.
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*
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* TLB entries are managed entirely under software control by reading,
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* writing, and searchoing using the 4xx-specific tlbre, tlbwr, and tlbsx
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* instructions.
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*/
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#define TLB_LO 1
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#define TLB_HI 0
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#define TLB_DATA TLB_LO
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#define TLB_TAG TLB_HI
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/* Tag portion */
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#define TLB_EPN_MASK 0xFFFFFC00 /* Effective Page Number */
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#define TLB_PAGESZ_MASK 0x00000380
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#define TLB_PAGESZ(x) (((x) & 0x7) << 7)
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#define PAGESZ_1K 0
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#define PAGESZ_4K 1
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#define PAGESZ_16K 2
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#define PAGESZ_64K 3
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#define PAGESZ_256K 4
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#define PAGESZ_1M 5
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#define PAGESZ_4M 6
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#define PAGESZ_16M 7
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#define TLB_VALID 0x00000040 /* Entry is valid */
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/* Data portion */
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#define TLB_RPN_MASK 0xFFFFFC00 /* Real Page Number */
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#define TLB_PERM_MASK 0x00000300
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#define TLB_EX 0x00000200 /* Instruction execution allowed */
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#define TLB_WR 0x00000100 /* Writes permitted */
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#define TLB_ZSEL_MASK 0x000000F0
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#define TLB_ZSEL(x) (((x) & 0xF) << 4)
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#define TLB_ATTR_MASK 0x0000000F
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#define TLB_W 0x00000008 /* Caching is write-through */
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#define TLB_I 0x00000004 /* Caching is inhibited */
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#define TLB_M 0x00000002 /* Memory is coherent */
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#define TLB_G 0x00000001 /* Memory is guarded from prefetch */
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/*
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* e500 support
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*/
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#define MAS0_TLBSEL 0x10000000
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#define MAS0_ESEL 0x000F0000
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#define MAS0_NV 0x00000001
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#define MAS1_VALID 0x80000000
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#define MAS1_IPROT 0x40000000
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#define MAS1_TID 0x00FF0000
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#define MAS1_TS 0x00001000
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#define MAS1_TSIZE 0x00000F00
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#define MAS2_EPN 0xFFFFF000
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#define MAS2_SHAREN 0x00000200
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#define MAS2_X0 0x00000040
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#define MAS2_X1 0x00000020
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#define MAS2_W 0x00000010
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#define MAS2_I 0x00000008
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#define MAS2_M 0x00000004
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#define MAS2_G 0x00000002
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#define MAS2_E 0x00000001
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#define MAS3_RPN 0xFFFFF000
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#define MAS3_U0 0x00000200
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#define MAS3_U1 0x00000100
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#define MAS3_U2 0x00000080
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#define MAS3_U3 0x00000040
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#define MAS3_UX 0x00000020
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#define MAS3_SX 0x00000010
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#define MAS3_UW 0x00000008
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#define MAS3_SW 0x00000004
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#define MAS3_UR 0x00000002
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#define MAS3_SR 0x00000001
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#define MAS4_TLBSELD 0x10000000
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#define MAS4_TIDDSEL 0x00030000
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#define MAS4_DSHAREN 0x00001000
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#define MAS4_TSIZED(x) (x << 8)
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#define MAS4_X0D 0x00000040
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#define MAS4_X1D 0x00000020
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#define MAS4_WD 0x00000010
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#define MAS4_ID 0x00000008
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#define MAS4_MD 0x00000004
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#define MAS4_GD 0x00000002
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#define MAS4_ED 0x00000001
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#define MAS6_SPID 0x00FF0000
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#define MAS6_SAS 0x00000001
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#define BOOKE_PAGESZ_1K 0
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#define BOOKE_PAGESZ_4K 1
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#define BOOKE_PAGESZ_16K 2
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#define BOOKE_PAGESZ_64K 3
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#define BOOKE_PAGESZ_256K 4
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#define BOOKE_PAGESZ_1M 5
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#define BOOKE_PAGESZ_4M 6
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#define BOOKE_PAGESZ_16M 7
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#define BOOKE_PAGESZ_64M 8
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#define BOOKE_PAGESZ_256M 9
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#define BOOKE_PAGESZ_1GB 10
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#define BOOKE_PAGESZ_4GB 11
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#if defined(CONFIG_MPC86xx)
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#define LAWBAR_BASE_ADDR 0x00FFFFFF
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#define LAWAR_TRGT_IF 0x01F00000
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#else
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#define LAWBAR_BASE_ADDR 0x000FFFFF
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#define LAWAR_TRGT_IF 0x00F00000
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#endif
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#define LAWAR_EN 0x80000000
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#define LAWAR_SIZE 0x0000003F
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#define LAWAR_TRGT_IF_PCI 0x00000000
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#define LAWAR_TRGT_IF_PCI1 0x00000000
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#define LAWAR_TRGT_IF_PCIX 0x00000000
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#define LAWAR_TRGT_IF_PCI2 0x00100000
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#define LAWAR_TRGT_IF_HT 0x00200000
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#define LAWAR_TRGT_IF_LBC 0x00400000
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#define LAWAR_TRGT_IF_CCSR 0x00800000
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#define LAWAR_TRGT_IF_DDR_INTERLEAVED 0x00B00000
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#define LAWAR_TRGT_IF_RIO 0x00c00000
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#define LAWAR_TRGT_IF_DDR 0x00f00000
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#define LAWAR_TRGT_IF_DDR1 0x00f00000
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#define LAWAR_TRGT_IF_DDR2 0x01600000
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#define LAWAR_SIZE_BASE 0xa
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#define LAWAR_SIZE_4K (LAWAR_SIZE_BASE+1)
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#define LAWAR_SIZE_8K (LAWAR_SIZE_BASE+2)
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#define LAWAR_SIZE_16K (LAWAR_SIZE_BASE+3)
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#define LAWAR_SIZE_32K (LAWAR_SIZE_BASE+4)
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#define LAWAR_SIZE_64K (LAWAR_SIZE_BASE+5)
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#define LAWAR_SIZE_128K (LAWAR_SIZE_BASE+6)
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#define LAWAR_SIZE_256K (LAWAR_SIZE_BASE+7)
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#define LAWAR_SIZE_512K (LAWAR_SIZE_BASE+8)
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#define LAWAR_SIZE_1M (LAWAR_SIZE_BASE+9)
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#define LAWAR_SIZE_2M (LAWAR_SIZE_BASE+10)
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#define LAWAR_SIZE_4M (LAWAR_SIZE_BASE+11)
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#define LAWAR_SIZE_8M (LAWAR_SIZE_BASE+12)
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#define LAWAR_SIZE_16M (LAWAR_SIZE_BASE+13)
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#define LAWAR_SIZE_32M (LAWAR_SIZE_BASE+14)
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#define LAWAR_SIZE_64M (LAWAR_SIZE_BASE+15)
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#define LAWAR_SIZE_128M (LAWAR_SIZE_BASE+16)
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#define LAWAR_SIZE_256M (LAWAR_SIZE_BASE+17)
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#define LAWAR_SIZE_512M (LAWAR_SIZE_BASE+18)
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#define LAWAR_SIZE_1G (LAWAR_SIZE_BASE+19)
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#define LAWAR_SIZE_2G (LAWAR_SIZE_BASE+20)
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#define LAWAR_SIZE_4G (LAWAR_SIZE_BASE+21)
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#define LAWAR_SIZE_8G (LAWAR_SIZE_BASE+22)
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#define LAWAR_SIZE_16G (LAWAR_SIZE_BASE+23)
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#define LAWAR_SIZE_32G (LAWAR_SIZE_BASE+24)
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#endif /* _PPC_MMU_H_ */
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