1 /* 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 25 DECLARE_GLOBAL_DATA_PTR; 26 27 #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS) 28 #ifdef CONFIG_FSL_CORENET 29 static 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 60 static 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 72 /* We run cpu_init_early_f in AS = 1 */ 73 void 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) 98 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); 103 104 write_tlb(mas0, mas1, mas2, mas3, mas7); 105 106 setup_ccsrbar(); 107 #endif 108 109 init_laws(); 110 invalidate_tlb(0); 111 init_tlbs(); 112 } 113