blob: 32aa94b612ca0ada037d2dacb890c20e53c31ee6 [file] [log] [blame]
Kumar Gala9f004092009-09-11 13:52:45 -05001/*
2 * Copyright 2009 Freescale Semiconductor, Inc
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
17 * MA 02111-1307 USA
18 */
19
20#include <common.h>
21#include <asm/processor.h>
22#include <asm/mmu.h>
23#include <asm/fsl_law.h>
24
25DECLARE_GLOBAL_DATA_PTR;
26
Kumar Galaa880cf32009-09-17 01:44:00 -050027#if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
28#ifdef CONFIG_FSL_CORENET
29static void setup_ccsrbar(void)
30{
31 u32 temp;
32 volatile u32 *ccsr_virt = (volatile u32 *)(CONFIG_SYS_CCSRBAR + 0x1000);
33 volatile ccsr_local_t *ccm;
34
35 /*
36 * We can't call set_law() because we haven't moved
37 * CCSR yet.
38 */
39 ccm = (void *)ccsr_virt;
40
41 out_be32(&ccm->law[0].lawbarh,
42 (u64)CONFIG_SYS_CCSRBAR_PHYS >> 32);
43 out_be32(&ccm->law[0].lawbarl, (u32)CONFIG_SYS_CCSRBAR_PHYS);
44 out_be32(&ccm->law[0].lawar,
45 LAW_EN | (0x1e << 20) | LAW_SIZE_4K);
46
47 in_be32((u32 *)(ccsr_virt + 0));
48 in_be32((u32 *)(ccsr_virt + 1));
49 isync();
50
51 ccm = (void *)CONFIG_SYS_CCSRBAR;
52 /* Now use the temporary LAW to move CCSR */
53 out_be32(&ccm->ccsrbarh, (u64)CONFIG_SYS_CCSRBAR_PHYS >> 32);
54 out_be32(&ccm->ccsrbarl, (u32)CONFIG_SYS_CCSRBAR_PHYS);
55 out_be32(&ccm->ccsrar, CCSRAR_C);
56 temp = in_be32(&ccm->ccsrar);
57 disable_law(0);
58}
59#else
60static void setup_ccsrbar(void)
61{
62 u32 temp;
63 volatile u32 *ccsr_virt = (volatile u32 *)(CONFIG_SYS_CCSRBAR + 0x1000);
64
65 temp = in_be32(ccsr_virt);
66 out_be32(ccsr_virt, CONFIG_SYS_CCSRBAR_PHYS >> 12);
67 temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR);
68}
69#endif
70#endif
71
Kumar Gala9f004092009-09-11 13:52:45 -050072/* We run cpu_init_early_f in AS = 1 */
73void cpu_init_early_f(void)
74{
75 u32 mas0, mas1, mas2, mas3, mas7;
76 int i;
77
78 /* Pointer is writable since we allocated a register for it */
79 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
80
81 /*
82 * Clear initial global data
83 * we don't use memset so we can share this code with NAND_SPL
84 */
85 for (i = 0; i < sizeof(gd_t); i++)
86 ((char *)gd)[i] = 0;
87
88 mas0 = MAS0_TLBSEL(0) | MAS0_ESEL(0);
89 mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_TSIZE(BOOKE_PAGESZ_4K);
90 mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G);
91 mas3 = FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS, 0, MAS3_SW|MAS3_SR);
92 mas7 = FSL_BOOKE_MAS7(CONFIG_SYS_CCSRBAR_PHYS);
93
94 write_tlb(mas0, mas1, mas2, mas3, mas7);
95
96 /* set up CCSR if we want it moved */
97#if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
Kumar Galaa880cf32009-09-17 01:44:00 -050098 mas0 = MAS0_TLBSEL(0) | MAS0_ESEL(1);
99 /* mas1 is the same as above */
100 mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR + 0x1000, MAS2_I|MAS2_G);
101 mas3 = FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_DEFAULT, 0, MAS3_SW|MAS3_SR);
102 mas7 = FSL_BOOKE_MAS7(CONFIG_SYS_CCSRBAR_DEFAULT);
Kumar Gala9f004092009-09-11 13:52:45 -0500103
Kumar Galaa880cf32009-09-17 01:44:00 -0500104 write_tlb(mas0, mas1, mas2, mas3, mas7);
Kumar Gala9f004092009-09-11 13:52:45 -0500105
Kumar Galaa880cf32009-09-17 01:44:00 -0500106 setup_ccsrbar();
Kumar Gala9f004092009-09-11 13:52:45 -0500107#endif
108
109 init_laws();
110 invalidate_tlb(0);
111 init_tlbs();
112}