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 #include <asm/io.h> 25 26 DECLARE_GLOBAL_DATA_PTR; 27 28 /* We run cpu_init_early_f in AS = 1 */ 29 void cpu_init_early_f(void) 30 { 31 u32 mas0, mas1, mas2, mas3, mas7; 32 int i; 33 #ifdef CONFIG_SYS_FSL_ERRATUM_P1010_A003549 34 ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); 35 #endif 36 37 /* Pointer is writable since we allocated a register for it */ 38 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET); 39 40 /* 41 * Clear initial global data 42 * we don't use memset so we can share this code with NAND_SPL 43 */ 44 for (i = 0; i < sizeof(gd_t); i++) 45 ((char *)gd)[i] = 0; 46 47 mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(13); 48 mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_TSIZE(BOOKE_PAGESZ_1M); 49 mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G); 50 mas3 = FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS, 0, MAS3_SW|MAS3_SR); 51 mas7 = FSL_BOOKE_MAS7(CONFIG_SYS_CCSRBAR_PHYS); 52 53 write_tlb(mas0, mas1, mas2, mas3, mas7); 54 55 /* 56 * Work Around for IFC Erratum A-003549. This issue is P1010 57 * specific. LCLK(a free running clk signal) is muxed with IFC_CS3 on P1010 SOC 58 * Hence specifically selecting CS3. 59 */ 60 #ifdef CONFIG_SYS_FSL_ERRATUM_P1010_A003549 61 setbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_LCLK_IFC_CS3); 62 #endif 63 64 init_laws(); 65 invalidate_tlb(1); 66 init_tlbs(); 67 } 68