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>
25 #include <asm-ppc/mmu.h>
31 * This table is used by the cpu boot code to setup the initial tlb
32 * entries. Rather than make broad assumptions in the cpu source tree,
33 * this table lets each board set things up however they like.
35 * Pointer to the table is returned in r1
43 /* vxWorks needs this as first entry for the Machine Check interrupt */
44 tlbentry( 0x40000000, SZ_256M, 0, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
46 /* TLB-entry for DDR SDRAM (Up to 2GB) */
47 #ifdef CONFIG_4xx_DCACHE
48 tlbentry( CONFIG_SYS_SDRAM_BASE, SZ_256M, CONFIG_SYS_SDRAM_BASE, 0, AC_R|AC_W|AC_X|SA_G)
50 tlbentry( CONFIG_SYS_SDRAM_BASE, SZ_256M, CONFIG_SYS_SDRAM_BASE, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
53 /* TLB-entry for EBC */
54 tlbentry( CONFIG_SYS_BCSR_BASE, SZ_256M, CONFIG_SYS_BCSR_BASE, 1, AC_R|AC_W|AC_X|SA_G|SA_I )
56 /* BOOT_CS (FLASH) must be forth. Before relocation SA_I can be off to use the
57 * speed up boot process. It is patched after relocation to enable SA_I
59 #ifndef CONFIG_NAND_SPL
60 tlbentry( CONFIG_SYS_BOOT_BASE_ADDR, SZ_256M, CONFIG_SYS_BOOT_BASE_ADDR, 1, AC_R|AC_W|AC_X|SA_G )
62 tlbentry( CONFIG_SYS_NAND_BOOT_SPL_SRC, SZ_4K, CONFIG_SYS_NAND_BOOT_SPL_SRC, 1, AC_R|AC_W|AC_X|SA_G )
65 #ifdef CONFIG_SYS_INIT_RAM_DCACHE
66 /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
67 tlbentry( CONFIG_SYS_INIT_RAM_ADDR, SZ_64K, CONFIG_SYS_INIT_RAM_ADDR, 0, AC_R|AC_W|AC_X|SA_G )
70 /* TLB-entry for PCI Memory */
71 tlbentry( CONFIG_SYS_PCI_MEMBASE, SZ_256M, CONFIG_SYS_PCI_MEMBASE, 1, AC_R|AC_W|SA_G|SA_I )
72 tlbentry( CONFIG_SYS_PCI_MEMBASE1, SZ_256M, CONFIG_SYS_PCI_MEMBASE1, 1, AC_R|AC_W|SA_G|SA_I )
73 tlbentry( CONFIG_SYS_PCI_MEMBASE2, SZ_256M, CONFIG_SYS_PCI_MEMBASE2, 1, AC_R|AC_W|SA_G|SA_I )
74 tlbentry( CONFIG_SYS_PCI_MEMBASE3, SZ_256M, CONFIG_SYS_PCI_MEMBASE3, 1, AC_R|AC_W|SA_G|SA_I )
76 /* TLB-entry for NAND */
77 tlbentry( CONFIG_SYS_NAND_ADDR, SZ_1K, CONFIG_SYS_NAND_ADDR, 1, AC_R|AC_W|AC_X|SA_G|SA_I )
79 /* TLB-entry for Internal Registers & OCM */
80 tlbentry( 0xe0000000, SZ_16M, 0xe0000000, 0, AC_R|AC_W|AC_X|SA_I )
82 /*TLB-entry PCI registers*/
83 tlbentry( 0xEEC00000, SZ_1K, 0xEEC00000, 1, AC_R|AC_W|AC_X|SA_G|SA_I )
85 /* TLB-entry for peripherals */
86 tlbentry( 0xEF000000, SZ_16M, 0xEF000000, 1, AC_R|AC_W|AC_X|SA_G|SA_I)
89 tlbentry(0xE8000000, SZ_64K, 0xE8000000, 1, AC_R|AC_W|AC_X|SA_G|SA_I)
93 #if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
95 * For NAND booting the first TLB has to be reconfigured to full size
96 * and with caching disabled after running from RAM!
98 #define TLB00 TLB0(CONFIG_SYS_BOOT_BASE_ADDR, SZ_256M)
99 #define TLB01 TLB1(CONFIG_SYS_BOOT_BASE_ADDR, 1)
100 #define TLB02 TLB2(AC_R|AC_W|AC_X|SA_G|SA_I)
106 addi r4,r0,0x0000 /* TLB entry #0 */
109 tlbwe r5,r4,0x0000 /* Save it out */
112 tlbwe r5,r4,0x0001 /* Save it out */
115 tlbwe r5,r4,0x0002 /* Save it out */