3 * Stefan Roese, DENX Software Engineering, sr@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #include <ppc_asm.tmpl>
28 #define TLB_VALID 0x00000200
30 /* Supported page sizes */
32 #define SZ_1K 0x00000000
33 #define SZ_4K 0x00000010
34 #define SZ_16K 0x00000020
35 #define SZ_64K 0x00000030
36 #define SZ_256K 0x00000040
37 #define SZ_1M 0x00000050
38 #define SZ_8M 0x00000060
39 #define SZ_16M 0x00000070
40 #define SZ_256M 0x00000090
42 /* Storage attributes */
43 #define SA_W 0x00000800 /* Write-through */
44 #define SA_I 0x00000400 /* Caching inhibited */
45 #define SA_M 0x00000200 /* Memory coherence */
46 #define SA_G 0x00000100 /* Guarded */
47 #define SA_E 0x00000080 /* Endian */
50 #define AC_X 0x00000024 /* Execute */
51 #define AC_W 0x00000012 /* Write */
52 #define AC_R 0x00000009 /* Read */
54 /* Some handy macros */
56 #define EPN(e) ((e) & 0xfffffc00)
57 #define TLB0(epn,sz) ( (EPN((epn)) | (sz) | TLB_VALID ) )
58 #define TLB1(rpn,erpn) ( ((rpn)&0xfffffc00) | (erpn) )
59 #define TLB2(a) ( (a)&0x00000fbf )
71 #define tlbentry(epn,sz,rpn,erpn,attr)\
72 .long TLB0(epn,sz),TLB1(rpn,erpn),TLB2(attr)
75 /**************************************************************************
78 * This table is used by the cpu boot code to setup the initial tlb
79 * entries. Rather than make broad assumptions in the cpu source tree,
80 * this table lets each board set things up however they like.
82 * Pointer to the table is returned in r1
84 *************************************************************************/
93 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
94 * speed up boot process. It is patched after relocation to enable SA_I
96 tlbentry( CONFIG_SYS_BOOT_BASE_ADDR, SZ_256M, CONFIG_SYS_BOOT_BASE_ADDR, 0, AC_R|AC_W|AC_X|SA_G/*|SA_I*/)
98 /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
99 tlbentry( CONFIG_SYS_INIT_RAM_ADDR, SZ_64K, CONFIG_SYS_INIT_RAM_ADDR, 0, AC_R|AC_W|AC_X|SA_G )
102 * TLB entries for SDRAM are not needed on this platform.
103 * They are dynamically generated in the SPD DDR detection
107 tlbentry( CONFIG_SYS_PCI_BASE, SZ_256M, CONFIG_SYS_PCI_BASE, 0, AC_R|AC_W|SA_G|SA_I )
110 tlbentry( CONFIG_SYS_PCI_MEMBASE, SZ_256M, CONFIG_SYS_PCI_MEMBASE, 0, AC_R|AC_W|SA_G|SA_I )
111 tlbentry( CONFIG_SYS_PCI_MEMBASE1, SZ_256M, CONFIG_SYS_PCI_MEMBASE1, 0, AC_R|AC_W|SA_G|SA_I )
112 tlbentry( CONFIG_SYS_PCI_MEMBASE2, SZ_256M, CONFIG_SYS_PCI_MEMBASE2, 0, AC_R|AC_W|SA_G|SA_I )
113 tlbentry( CONFIG_SYS_PCI_MEMBASE3, SZ_256M, CONFIG_SYS_PCI_MEMBASE3, 0, AC_R|AC_W|SA_G|SA_I )
116 tlbentry( CONFIG_SYS_USB_DEVICE, SZ_1K, 0x50000000, 0, AC_R|AC_W|SA_G|SA_I )