2 * Copyright 2008 Freescale Semiconductor, Inc.
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/processor.h>
29 #ifdef CONFIG_ADDR_MAP
33 DECLARE_GLOBAL_DATA_PTR;
35 void set_tlb(u8 tlb, u32 epn, u64 rpn,
37 u8 ts, u8 esel, u8 tsize, u8 iprot)
39 u32 _mas0, _mas1, _mas2, _mas3, _mas7;
41 _mas0 = FSL_BOOKE_MAS0(tlb, esel, 0);
42 _mas1 = FSL_BOOKE_MAS1(1, iprot, 0, ts, tsize);
43 _mas2 = FSL_BOOKE_MAS2(epn, wimge);
44 _mas3 = FSL_BOOKE_MAS3(rpn, 0, perms);
51 #ifdef CONFIG_ENABLE_36BIT_PHYS
54 asm volatile("isync;msync;tlbwe;isync");
56 #ifdef CONFIG_ADDR_MAP
57 if ((tlb == 1) && (gd->flags & GD_FLG_RELOC))
58 addrmap_set_entry(epn, rpn, (1UL << ((tsize * 2) + 10)), esel);
62 void disable_tlb(u8 esel)
64 u32 _mas0, _mas1, _mas2, _mas3, _mas7;
66 _mas0 = FSL_BOOKE_MAS0(1, esel, 0);
76 #ifdef CONFIG_ENABLE_36BIT_PHYS
79 asm volatile("isync;msync;tlbwe;isync");
81 #ifdef CONFIG_ADDR_MAP
82 if (gd->flags & GD_FLG_RELOC)
83 addrmap_set_entry(0, 0, 0, esel);
87 void invalidate_tlb(u8 tlb)
99 for (i = 0; i < num_tlb_entries; i++) {
100 set_tlb(tlb_table[i].tlb, tlb_table[i].epn, tlb_table[i].rpn,
101 tlb_table[i].perms, tlb_table[i].wimge,
102 tlb_table[i].ts, tlb_table[i].esel, tlb_table[i].tsize,
109 #ifdef CONFIG_ADDR_MAP
110 void init_addr_map(void)
114 for (i = 0; i < num_tlb_entries; i++) {
115 if (tlb_table[i].tlb == 0)
118 addrmap_set_entry(tlb_table[i].epn,
120 (1UL << ((tlb_table[i].tsize * 2) + 10)),
128 #ifndef CONFIG_SYS_DDR_TLB_START
129 #define CONFIG_SYS_DDR_TLB_START 8
132 unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg)
134 unsigned int tlb_size;
135 unsigned int ram_tlb_index;
136 unsigned int ram_tlb_address;
139 * Determine size of each TLB1 entry.
141 switch (memsize_in_meg) {
144 tlb_size = BOOKE_PAGESZ_16M;
148 tlb_size = BOOKE_PAGESZ_64M;
152 tlb_size = BOOKE_PAGESZ_256M;
156 if (PVR_VER(get_pvr()) > PVR_VER(PVR_85xx))
157 tlb_size = BOOKE_PAGESZ_1G;
159 tlb_size = BOOKE_PAGESZ_256M;
162 puts("DDR: only 16M, 32M, 64M, 128M, 256M, 512M, 1G"
163 " and 2G are supported.\n");
166 * The memory was not able to be mapped.
167 * Default to a small size.
169 tlb_size = BOOKE_PAGESZ_64M;
175 * Configure DDR TLB1 entries.
176 * Starting at TLB1 8, use no more than 8 TLB1 entries.
178 ram_tlb_index = CONFIG_SYS_DDR_TLB_START;
179 ram_tlb_address = (unsigned int)CONFIG_SYS_DDR_SDRAM_BASE;
180 while (ram_tlb_address < (memsize_in_meg * 1024 * 1024)
181 && ram_tlb_index < 16) {
182 set_tlb(1, ram_tlb_address, ram_tlb_address,
183 MAS3_SX|MAS3_SW|MAS3_SR, 0,
184 0, ram_tlb_index, tlb_size, 1);
186 ram_tlb_address += (0x1000 << ((tlb_size - 1) * 2));
191 * Confirm that the requested amount of memory was mapped.
193 return memsize_in_meg;