/* * (C) Copyright 2010-2012 * Stefan Roese, DENX Software Engineering, sr@denx.de. * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <bootcount.h> #include <linux/compiler.h> /* * Only override CONFIG_SYS_BOOTCOUNT_ADDR if not already defined. This * way, some boards can define it directly in their config header. */ #if !defined(CONFIG_SYS_BOOTCOUNT_ADDR) #if defined(CONFIG_MPC5xxx) #define CONFIG_SYS_BOOTCOUNT_ADDR (MPC5XXX_CDM_BRDCRMB) #define CONFIG_SYS_BOOTCOUNT_SINGLEWORD #endif /* defined(CONFIG_MPC5xxx) */ #if defined(CONFIG_MPC512X) #define CONFIG_SYS_BOOTCOUNT_ADDR (&((immap_t *)CONFIG_SYS_IMMR)->clk.bcr) #define CONFIG_SYS_BOOTCOUNT_SINGLEWORD #endif /* defined(CONFIG_MPC512X) */ #if defined(CONFIG_8xx) #define CONFIG_SYS_BOOTCOUNT_ADDR (((immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_dpmem + \ CPM_BOOTCOUNT_ADDR) #endif /* defined(CONFIG_8xx) */ #if defined(CONFIG_MPC8260) #include <asm/cpm_8260.h> #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + CPM_BOOTCOUNT_ADDR) #endif /* defined(CONFIG_MPC8260) */ #if defined(CONFIG_QE) #include <asm/immap_qe.h> #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + 0x110000 + \ QE_MURAM_SIZE - 2 * sizeof(u32)) #endif /* defined(CONFIG_MPC8360) */ #if defined(CONFIG_4xx) #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_OCM_DATA_ADDR + \ CONFIG_SYS_BOOTCOUNT_ADDR) #endif /* defined(CONFIG_4xx) */ #endif /* !defined(CONFIG_SYS_BOOTCOUNT_ADDR) */ /* Now implement the generic default functions */ #if defined(CONFIG_SYS_BOOTCOUNT_ADDR) __weak void bootcount_store(ulong a) { void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR; #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) raw_bootcount_store(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a); #else raw_bootcount_store(reg, a); raw_bootcount_store(reg + 4, BOOTCOUNT_MAGIC); #endif } __weak ulong bootcount_load(void) { void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR; #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) u32 tmp = raw_bootcount_load(reg); if ((tmp & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000)) return 0; else return (tmp & 0x0000ffff); #else if (raw_bootcount_load(reg + 4) != BOOTCOUNT_MAGIC) return 0; else return raw_bootcount_load(reg); #endif } #endif