diff options
Diffstat (limited to 'drivers/bootcount')
| -rw-r--r-- | drivers/bootcount/Makefile | 45 | ||||
| -rw-r--r-- | drivers/bootcount/bootcount.c | 100 | ||||
| -rw-r--r-- | drivers/bootcount/bootcount_at91.c | 43 | ||||
| -rw-r--r-- | drivers/bootcount/bootcount_blackfin.c | 34 | ||||
| -rw-r--r-- | drivers/bootcount/bootcount_davinci.c | 49 | ||||
| -rw-r--r-- | drivers/bootcount/bootcount_ram.c | 72 |
6 files changed, 343 insertions, 0 deletions
diff --git a/drivers/bootcount/Makefile b/drivers/bootcount/Makefile new file mode 100644 index 000000000..a8d0ac7a3 --- /dev/null +++ b/drivers/bootcount/Makefile @@ -0,0 +1,45 @@ +# +# 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 $(TOPDIR)/config.mk + +LIB := $(obj)libbootcount.o + +COBJS-y += bootcount.o +COBJS-$(CONFIG_AT91SAM9XE) += bootcount_at91.o +COBJS-$(CONFIG_BLACKFIN) += bootcount_blackfin.o +COBJS-$(CONFIG_SOC_DA8XX) += bootcount_davinci.o +COBJS-$(CONFIG_BOOTCOUNT_RAM) += bootcount_ram.o + +COBJS := $(COBJS-y) +SRCS := $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) + +$(LIB): $(obj).depend $(OBJS) + $(call cmd_link_o_target, $(OBJS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################## diff --git a/drivers/bootcount/bootcount.c b/drivers/bootcount/bootcount.c new file mode 100644 index 000000000..80eb71763 --- /dev/null +++ b/drivers/bootcount/bootcount.c @@ -0,0 +1,100 @@ +/* + * (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 diff --git a/drivers/bootcount/bootcount_at91.c b/drivers/bootcount/bootcount_at91.c new file mode 100644 index 000000000..7cfe14d37 --- /dev/null +++ b/drivers/bootcount/bootcount_at91.c @@ -0,0 +1,43 @@ +/* + * 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. + * + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/hardware.h> +#include <asm/arch/at91_gpbr.h> + +/* + * We combine the BOOTCOUNT_MAGIC and bootcount in one 32-bit register. + * This is done so we need to use only one of the four GPBR registers. + */ +void bootcount_store(ulong a) +{ + at91_gpbr_t *gpbr = (at91_gpbr_t *) ATMEL_BASE_GPBR; + + writel((BOOTCOUNT_MAGIC & 0xffff0000) | (a & 0x0000ffff), + &gpbr->reg[AT91_GPBR_INDEX_BOOTCOUNT]); +} + +ulong bootcount_load(void) +{ + at91_gpbr_t *gpbr = (at91_gpbr_t *) ATMEL_BASE_GPBR; + + ulong val = readl(&gpbr->reg[AT91_GPBR_INDEX_BOOTCOUNT]); + if ((val & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000)) + return 0; + else + return val & 0x0000ffff; +} diff --git a/drivers/bootcount/bootcount_blackfin.c b/drivers/bootcount/bootcount_blackfin.c new file mode 100644 index 000000000..6cf6dd58b --- /dev/null +++ b/drivers/bootcount/bootcount_blackfin.c @@ -0,0 +1,34 @@ +/* + * functions for handling bootcount support + * + * Copyright (c) 2010 Analog Devices Inc. + * + * Licensed under the 2-clause BSD. + */ + +/* This version uses one 32bit storage and combines the magic/count */ + +#include <common.h> + +/* We abuse the EVT0 MMR for bootcount storage by default */ +#ifndef CONFIG_SYS_BOOTCOUNT_ADDR +# define CONFIG_SYS_BOOTCOUNT_ADDR EVT0 +#endif + +#define MAGIC_MASK 0xffff0000 +#define COUNT_MASK 0x0000ffff + +void bootcount_store(ulong cnt) +{ + ulong magic = (BOOTCOUNT_MAGIC & MAGIC_MASK) | (cnt & COUNT_MASK); + bfin_write32(CONFIG_SYS_BOOTCOUNT_ADDR, magic); +} + +ulong bootcount_load(void) +{ + ulong magic = bfin_read32(CONFIG_SYS_BOOTCOUNT_ADDR); + if ((magic & MAGIC_MASK) == (BOOTCOUNT_MAGIC & MAGIC_MASK)) + return magic & COUNT_MASK; + else + return 0; +} diff --git a/drivers/bootcount/bootcount_davinci.c b/drivers/bootcount/bootcount_davinci.c new file mode 100644 index 000000000..1cd943630 --- /dev/null +++ b/drivers/bootcount/bootcount_davinci.c @@ -0,0 +1,49 @@ +/* + * (C) Copyright 2011 + * Heiko Schocher, DENX Software Engineering, hs@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. + * + */ + +#include <bootcount.h> +#include <asm/arch/da850_lowlevel.h> +#include <asm/arch/davinci_misc.h> + +void bootcount_store(ulong a) +{ + struct davinci_rtc *reg = + (struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR; + + /* + * write RTC kick register to enable write + * for RTC Scratch registers. Scratch0 and 1 are + * used for bootcount values. + */ + writel(RTC_KICK0R_WE, ®->kick0r); + writel(RTC_KICK1R_WE, ®->kick1r); + raw_bootcount_store(®->scratch0, a); + raw_bootcount_store(®->scratch1, BOOTCOUNT_MAGIC); +} + +ulong bootcount_load(void) +{ + struct davinci_rtc *reg = + (struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR; + + if (raw_bootcount_load(®->scratch1) != BOOTCOUNT_MAGIC) + return 0; + else + return raw_bootcount_load(®->scratch0); +} diff --git a/drivers/bootcount/bootcount_ram.c b/drivers/bootcount/bootcount_ram.c new file mode 100644 index 000000000..8655af7ea --- /dev/null +++ b/drivers/bootcount/bootcount_ram.c @@ -0,0 +1,72 @@ +/* + * (C) Copyright 2010 + * Heiko Schocher, DENX Software Engineering, hs@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. + * + */ + +#include <common.h> +#include <asm/io.h> + +DECLARE_GLOBAL_DATA_PTR; + +const ulong patterns[] = { 0x00000000, + 0xFFFFFFFF, + 0xFF00FF00, + 0x0F0F0F0F, + 0xF0F0F0F0}; +const ulong NBR_OF_PATTERNS = sizeof(patterns) / sizeof(*patterns); +const ulong OFFS_PATTERN = 3; +const ulong REPEAT_PATTERN = 1000; + +void bootcount_store(ulong a) +{ + ulong *save_addr; + ulong size = 0; + int i; + + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) + size += gd->bd->bi_dram[i].size; + save_addr = (ulong *)(size - BOOTCOUNT_ADDR); + writel(a, save_addr); + writel(BOOTCOUNT_MAGIC, &save_addr[1]); + + for (i = 0; i < REPEAT_PATTERN; i++) + writel(patterns[i % NBR_OF_PATTERNS], + &save_addr[i + OFFS_PATTERN]); + +} + +ulong bootcount_load(void) +{ + ulong *save_addr; + ulong size = 0; + ulong counter = 0; + int i, tmp; + + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) + size += gd->bd->bi_dram[i].size; + save_addr = (ulong *)(size - BOOTCOUNT_ADDR); + + counter = readl(&save_addr[0]); + + /* Is the counter reliable, check in the big pattern for bit errors */ + for (i = 0; (i < REPEAT_PATTERN) && (counter != 0); i++) { + tmp = readl(&save_addr[i + OFFS_PATTERN]); + if (tmp != patterns[i % NBR_OF_PATTERNS]) + counter = 0; + } + return counter; +} |