1 /* 2 * (C) Copyright 2010-2012 3 * Stefan Roese, DENX Software Engineering, sr@denx.de. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include <bootcount.h> 25 #include <linux/compiler.h> 26 27 /* 28 * Only override CONFIG_SYS_BOOTCOUNT_ADDR if not already defined. This 29 * way, some boards can define it directly in their config header. 30 */ 31 #if !defined(CONFIG_SYS_BOOTCOUNT_ADDR) 32 33 #if defined(CONFIG_MPC5xxx) 34 #define CONFIG_SYS_BOOTCOUNT_ADDR (MPC5XXX_CDM_BRDCRMB) 35 #define CONFIG_SYS_BOOTCOUNT_SINGLEWORD 36 #endif /* defined(CONFIG_MPC5xxx) */ 37 38 #if defined(CONFIG_MPC512X) 39 #define CONFIG_SYS_BOOTCOUNT_ADDR (&((immap_t *)CONFIG_SYS_IMMR)->clk.bcr) 40 #define CONFIG_SYS_BOOTCOUNT_SINGLEWORD 41 #endif /* defined(CONFIG_MPC512X) */ 42 43 #if defined(CONFIG_8xx) 44 #define CONFIG_SYS_BOOTCOUNT_ADDR (((immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_dpmem + \ 45 CPM_BOOTCOUNT_ADDR) 46 #endif /* defined(CONFIG_8xx) */ 47 48 #if defined(CONFIG_MPC8260) 49 #include <asm/cpm_8260.h> 50 51 #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + CPM_BOOTCOUNT_ADDR) 52 #endif /* defined(CONFIG_MPC8260) */ 53 54 #if defined(CONFIG_QE) 55 #include <asm/immap_qe.h> 56 57 #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + 0x110000 + \ 58 QE_MURAM_SIZE - 2 * sizeof(u32)) 59 #endif /* defined(CONFIG_MPC8360) */ 60 61 #if defined(CONFIG_4xx) 62 #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_OCM_DATA_ADDR + \ 63 CONFIG_SYS_BOOTCOUNT_ADDR) 64 #endif /* defined(CONFIG_4xx) */ 65 66 #endif /* !defined(CONFIG_SYS_BOOTCOUNT_ADDR) */ 67 68 /* Now implement the generic default functions */ 69 #if defined(CONFIG_SYS_BOOTCOUNT_ADDR) 70 __weak void bootcount_store(ulong a) 71 { 72 void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR; 73 74 #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) 75 raw_bootcount_store(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a); 76 #else 77 raw_bootcount_store(reg, a); 78 raw_bootcount_store(reg + 4, BOOTCOUNT_MAGIC); 79 #endif 80 } 81 82 __weak ulong bootcount_load(void) 83 { 84 void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR; 85 86 #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) 87 u32 tmp = raw_bootcount_load(reg); 88 89 if ((tmp & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000)) 90 return 0; 91 else 92 return (tmp & 0x0000ffff); 93 #else 94 if (raw_bootcount_load(reg + 4) != BOOTCOUNT_MAGIC) 95 return 0; 96 else 97 return raw_bootcount_load(reg); 98 #endif 99 } 100 #endif 101