xref: /openbmc/u-boot/board/socrates/tlb.c (revision 85231c08)
1 /*
2  * (C) Copyright 2008
3  * Sergei Poselenov, Emcraft Systems, sposelenov@emcraft.com.
4  *
5  * Copyright 2008 Freescale Semiconductor, Inc.
6  *
7  * (C) Copyright 2000
8  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
9  *
10  * SPDX-License-Identifier:	GPL-2.0+
11  */
12 
13 #include <common.h>
14 #include <asm/mmu.h>
15 
16 struct fsl_e_tlb_entry tlb_table[] = {
17 	/* TLB 0 - for temp stack in cache */
18 	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR, CONFIG_SYS_INIT_RAM_ADDR,
19 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
20 		      0, 0, BOOKE_PAGESZ_4K, 0),
21 	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024 , CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024,
22 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
23 		      0, 0, BOOKE_PAGESZ_4K, 0),
24 	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024 , CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024,
25 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
26 		      0, 0, BOOKE_PAGESZ_4K, 0),
27 	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024 , CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024,
28 		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
29 		      0, 0, BOOKE_PAGESZ_4K, 0),
30 
31 
32 	/*
33 	 * TLB 1:	64M	Non-cacheable, guarded
34 	 * 0xfc000000	64M	FLASH
35 	 * Out of reset this entry is only 4K.
36 	 */
37 	SET_TLB_ENTRY(1, CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE,
38 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
39 		      0, 1, BOOKE_PAGESZ_64M, 1),
40 
41 	/*
42 	 * TLB 2:	256M	Non-cacheable, guarded
43 	 * 0x80000000	256M	PCI1 MEM First half
44 	 */
45 	SET_TLB_ENTRY(1, CONFIG_SYS_PCI1_MEM_PHYS, CONFIG_SYS_PCI1_MEM_PHYS,
46 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
47 		      0, 2, BOOKE_PAGESZ_256M, 1),
48 
49 	/*
50 	 * TLB 3:	256M	Non-cacheable, guarded
51 	 * 0x90000000	256M	PCI1 MEM Second half
52 	 */
53 	SET_TLB_ENTRY(1, CONFIG_SYS_PCI1_MEM_PHYS + 0x10000000, CONFIG_SYS_PCI1_MEM_PHYS + 0x10000000,
54 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
55 		      0, 3, BOOKE_PAGESZ_256M, 1),
56 
57 #if defined(CONFIG_SYS_FPGA_BASE)
58 	/*
59 	 * TLB 4:	1M	Non-cacheable, guarded
60 	 * 0xc0000000	1M	FPGA and NAND
61 	 */
62 	SET_TLB_ENTRY(1, CONFIG_SYS_FPGA_BASE, CONFIG_SYS_FPGA_BASE,
63 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
64 		      0, 4, BOOKE_PAGESZ_1M, 1),
65 #endif
66 
67 	/*
68 	 * TLB 5:	64M	Non-cacheable, guarded
69 	 * 0xc8000000	16M	LIME GDC framebuffer
70 	 * 0xc9fc0000	256K	LIME GDC MMIO
71 	 * (0xcbfc0000	256K	LIME GDC MMIO)
72 	 * MMIO is relocatable and could be at 0xcbfc0000
73 	 */
74 	SET_TLB_ENTRY(1, CONFIG_SYS_LIME_BASE, CONFIG_SYS_LIME_BASE,
75 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
76 		      0, 5, BOOKE_PAGESZ_64M, 1),
77 
78 	/*
79 	 * TLB 6:	64M	Non-cacheable, guarded
80 	 * 0xe000_0000	1M	CCSRBAR
81 	 * 0xe200_0000	16M	PCI1 IO
82 	 */
83 	SET_TLB_ENTRY(1, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
84 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
85 		      0, 6, BOOKE_PAGESZ_64M, 1),
86 
87 #if !defined(CONFIG_SPD_EEPROM)
88 	/*
89 	 * TLB 7+8:	512M	DDR, cache disabled (needed for memory test)
90 	 * 0x00000000  512M	DDR System memory
91 	 * Without SPD EEPROM configured DDR, this must be setup manually.
92 	 * Make sure the TLB count at the top of this table is correct.
93 	 * Likely it needs to be increased by two for these entries.
94 	 */
95 	SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE, CONFIG_SYS_DDR_SDRAM_BASE,
96 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
97 		      0, 7, BOOKE_PAGESZ_256M, 1),
98 
99 	SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE + 0x10000000, CONFIG_SYS_DDR_SDRAM_BASE + 0x10000000,
100 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
101 		      0, 8, BOOKE_PAGESZ_256M, 1),
102 #endif
103 };
104 
105 int num_tlb_entries = ARRAY_SIZE(tlb_table);
106