[U-Boot] [PATCH v2] Consolidate bootcount code into drivers/bootcount
Rob Herring
robherring2 at gmail.com
Mon Jun 4 15:03:27 CEST 2012
On 06/04/2012 07:38 AM, Stefan Roese wrote:
> This patch moves all bootcount implementations into a common
> directory: drivers/bootcount. The generic bootcount driver
> is now usable not only by powerpc platforms, but others as well.
>
> Signed-off-by: Stefan Roese <sr at denx.de>
> Cc: Heiko Schocher <hs at denx.de>
> Cc: Valentin Longchamp <valentin.longchamp at keymile.com>
> Cc: Christian Riesch <christian.riesch at omicron.at>
> Cc: Manfred Rudigier <manfred.rudigier at omicron.at>
> Cc: Mike Frysinger <vapier at gentoo.org>
> Cc: Rob Herring <rob.herring at calxeda.com>
> Cc: Reinhard Meyer <reinhard.meyer at emk-elektronik.de>
> ---
> v2:
> - Added CONFIG_BOOTCOUNT_LE to bootcount_davinci.c and enabled it
> in calimain.h to select little-endian accessors.
highbank is also LE. Why don't you use __BYTE_ORDER rather than a new
define?
Rob
>
> Makefile | 3 +
> arch/arm/cpu/arm926ejs/at91/cpu.c | 26 -------
> arch/arm/cpu/armv7/highbank/Makefile | 2 +-
> arch/arm/cpu/armv7/highbank/bootcount.c | 36 ----------
> arch/arm/cpu/ixp/cpu.c | 22 ------
> arch/powerpc/lib/Makefile | 1 -
> board/enbw/enbw_cmc/enbw_cmc.c | 29 --------
> board/keymile/km_arm/km_arm.c | 51 --------------
> board/omicron/calimain/calimain.c | 29 --------
> drivers/bootcount/Makefile | 47 +++++++++++++
> .../powerpc/lib => drivers/bootcount}/bootcount.c | 10 ++-
> drivers/bootcount/bootcount_at91.c | 43 ++++++++++++
> .../bootcount/bootcount_blackfin.c | 0
> drivers/bootcount/bootcount_davinci.c | 72 ++++++++++++++++++++
> drivers/bootcount/bootcount_ram.c | 72 ++++++++++++++++++++
> include/configs/calimain.h | 1 +
> include/configs/km/km_arm.h | 2 +
> 17 files changed, 248 insertions(+), 198 deletions(-)
> delete mode 100644 arch/arm/cpu/armv7/highbank/bootcount.c
> create mode 100644 drivers/bootcount/Makefile
> rename {arch/powerpc/lib => drivers/bootcount}/bootcount.c (92%)
> create mode 100644 drivers/bootcount/bootcount_at91.c
> rename arch/blackfin/cpu/bootcount.c => drivers/bootcount/bootcount_blackfin.c (100%)
> create mode 100644 drivers/bootcount/bootcount_davinci.c
> create mode 100644 drivers/bootcount/bootcount_ram.c
>
> diff --git a/Makefile b/Makefile
> index 659e8f2..8fd51b8 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -249,6 +249,9 @@ LIBS += net/libnet.o
> LIBS += disk/libdisk.o
> LIBS += drivers/bios_emulator/libatibiosemu.o
> LIBS += drivers/block/libblock.o
> +ifeq ($(CONFIG_BOOTCOUNT_LIMIT),y)
> +LIBS += drivers/bootcount/libbootcount.o
> +endif
> LIBS += drivers/dma/libdma.o
> LIBS += drivers/fpga/libfpga.o
> LIBS += drivers/gpio/libgpio.o
> diff --git a/arch/arm/cpu/arm926ejs/at91/cpu.c b/arch/arm/cpu/arm926ejs/at91/cpu.c
> index c47fb31..5cf4fad 100644
> --- a/arch/arm/cpu/arm926ejs/at91/cpu.c
> +++ b/arch/arm/cpu/arm926ejs/at91/cpu.c
> @@ -71,29 +71,3 @@ int print_cpuinfo(void)
> return 0;
> }
> #endif
> -
> -#ifdef CONFIG_BOOTCOUNT_LIMIT
> -/*
> - * 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;
> -}
> -
> -#endif /* CONFIG_BOOTCOUNT_LIMIT */
> diff --git a/arch/arm/cpu/armv7/highbank/Makefile b/arch/arm/cpu/armv7/highbank/Makefile
> index 917c3a3..76faeb0 100644
> --- a/arch/arm/cpu/armv7/highbank/Makefile
> +++ b/arch/arm/cpu/armv7/highbank/Makefile
> @@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
>
> LIB = $(obj)lib$(SOC).o
>
> -COBJS := timer.o bootcount.o
> +COBJS := timer.o
> SOBJS :=
>
> SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
> diff --git a/arch/arm/cpu/armv7/highbank/bootcount.c b/arch/arm/cpu/armv7/highbank/bootcount.c
> deleted file mode 100644
> index 9ca0656..0000000
> --- a/arch/arm/cpu/armv7/highbank/bootcount.c
> +++ /dev/null
> @@ -1,36 +0,0 @@
> -/*
> - * Copyright 2011 Calxeda, Inc.
> - *
> - * 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 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, see <http://www.gnu.org/licenses/>.
> - */
> -
> -#include <common.h>
> -#include <asm/io.h>
> -
> -#ifdef CONFIG_BOOTCOUNT_LIMIT
> -void bootcount_store(ulong a)
> -{
> - writel((BOOTCOUNT_MAGIC & 0xffff0000) | a, CONFIG_SYS_BOOTCOUNT_ADDR);
> -}
> -
> -ulong bootcount_load(void)
> -{
> - u32 tmp = readl(CONFIG_SYS_BOOTCOUNT_ADDR);
> -
> - if ((tmp & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000))
> - return 0;
> - else
> - return tmp & 0x0000ffff;
> -}
> -#endif
> diff --git a/arch/arm/cpu/ixp/cpu.c b/arch/arm/cpu/ixp/cpu.c
> index 942845d..f1864d6 100644
> --- a/arch/arm/cpu/ixp/cpu.c
> +++ b/arch/arm/cpu/ixp/cpu.c
> @@ -107,28 +107,6 @@ void pci_init(void)
> }
> */
>
> -#ifdef CONFIG_BOOTCOUNT_LIMIT
> -
> -void bootcount_store (ulong a)
> -{
> - volatile ulong *save_addr = (volatile ulong *)(CONFIG_SYS_BOOTCOUNT_ADDR);
> -
> - save_addr[0] = a;
> - save_addr[1] = BOOTCOUNT_MAGIC;
> -}
> -
> -ulong bootcount_load (void)
> -{
> - volatile ulong *save_addr = (volatile ulong *)(CONFIG_SYS_BOOTCOUNT_ADDR);
> -
> - if (save_addr[1] != BOOTCOUNT_MAGIC)
> - return 0;
> - else
> - return save_addr[0];
> -}
> -
> -#endif /* CONFIG_BOOTCOUNT_LIMIT */
> -
> int cpu_eth_init(bd_t *bis)
> {
> #ifdef CONFIG_IXP4XX_NPE
> diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
> index cdd62a2..965f9ea 100644
> --- a/arch/powerpc/lib/Makefile
> +++ b/arch/powerpc/lib/Makefile
> @@ -46,7 +46,6 @@ SOBJS-y += reloc.o
> COBJS-$(CONFIG_BAT_RW) += bat_rw.o
> COBJS-y += board.o
> COBJS-y += bootm.o
> -COBJS-$(CONFIG_BOOTCOUNT_LIMIT) += bootcount.o
> COBJS-y += cache.o
> COBJS-y += extable.o
> COBJS-y += interrupts.o
> diff --git a/board/enbw/enbw_cmc/enbw_cmc.c b/board/enbw/enbw_cmc/enbw_cmc.c
> index 6c0d931..3616df0 100644
> --- a/board/enbw/enbw_cmc/enbw_cmc.c
> +++ b/board/enbw/enbw_cmc/enbw_cmc.c
> @@ -517,35 +517,6 @@ void arch_memory_failure_handle(void)
> }
> #endif
>
> -#if defined(CONFIG_BOOTCOUNT_LIMIT)
> -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);
> - out_be32(®->scratch0, a);
> - out_be32(®->scratch1, BOOTCOUNT_MAGIC);
> -}
> -
> -ulong bootcount_load(void)
> -{
> - struct davinci_rtc *reg =
> - (struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
> -
> - if (in_be32(®->scratch1) != BOOTCOUNT_MAGIC)
> - return 0;
> - else
> - return in_be32(®->scratch0);
> -}
> -#endif
> -
> void board_gpio_init(void)
> {
> struct davinci_gpio *gpio = davinci_gpio_bank01;
> diff --git a/board/keymile/km_arm/km_arm.c b/board/keymile/km_arm/km_arm.c
> index 9e9940c..667edbc 100644
> --- a/board/keymile/km_arm/km_arm.c
> +++ b/board/keymile/km_arm/km_arm.c
> @@ -404,57 +404,6 @@ int hush_init_var(void)
> }
> #endif
>
> -#if defined(CONFIG_BOOTCOUNT_LIMIT)
> -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;
> -}
> -#endif
> -
> #if defined(CONFIG_SOFT_I2C)
> void set_sda(int state)
> {
> diff --git a/board/omicron/calimain/calimain.c b/board/omicron/calimain/calimain.c
> index 54415ce..1060a1f 100644
> --- a/board/omicron/calimain/calimain.c
> +++ b/board/omicron/calimain/calimain.c
> @@ -157,32 +157,3 @@ void hw_watchdog_reset(void)
> davinci_hw_watchdog_reset();
> }
> #endif
> -
> -#if defined(CONFIG_BOOTCOUNT_LIMIT)
> -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);
> - writel(a, ®->scratch0);
> - writel(BOOTCOUNT_MAGIC, ®->scratch1);
> -}
> -
> -ulong bootcount_load(void)
> -{
> - struct davinci_rtc *reg =
> - (struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
> -
> - if (readl(®->scratch1) != BOOTCOUNT_MAGIC)
> - return 0;
> - else
> - return readl(®->scratch0);
> -}
> -#endif
> diff --git a/drivers/bootcount/Makefile b/drivers/bootcount/Makefile
> new file mode 100644
> index 0000000..3d5ec13
> --- /dev/null
> +++ b/drivers/bootcount/Makefile
> @@ -0,0 +1,47 @@
> +#
> +# 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-$(CONFIG_BFIN_CPU) += bootcount_blackfin.o
> +COBJS-$(CONFIG_SOC_DA8XX) += bootcount_davinci.o
> +COBJS-$(CONFIG_BOOTCOUNT_RAM) += bootcount_ram.o
> +
> +COBJS := $(COBJS-y)
> +SRCS := $(COBJS:.o=.c)
> +OBJS := $(addprefix $(obj),$(COBJS))
> +
> +all: $(LIB)
> +
> +$(LIB): $(obj).depend $(OBJS)
> + $(call cmd_link_o_target, $(OBJS))
> +
> +#########################################################################
> +
> +# defines $(obj).depend target
> +include $(SRCTREE)/rules.mk
> +
> +sinclude $(obj).depend
> +
> +########################################################################
> diff --git a/arch/powerpc/lib/bootcount.c b/drivers/bootcount/bootcount.c
> similarity index 92%
> rename from arch/powerpc/lib/bootcount.c
> rename to drivers/bootcount/bootcount.c
> index f9ce539..5d22a28 100644
> --- a/arch/powerpc/lib/bootcount.c
> +++ b/drivers/bootcount/bootcount.c
> @@ -1,5 +1,5 @@
> /*
> - * (C) Copyright 2010
> + * (C) Copyright 2010-2012
> * Stefan Roese, DENX Software Engineering, sr at denx.de.
> *
> * See file CREDITS for list of people who contributed to this
> @@ -22,6 +22,7 @@
> */
>
> #include <common.h>
> +#include <linux/compiler.h>
> #include <asm/io.h>
>
> /*
> @@ -65,7 +66,9 @@
>
> #endif /* !defined(CONFIG_SYS_BOOTCOUNT_ADDR) */
>
> -void bootcount_store(ulong a)
> +/* 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;
>
> @@ -77,7 +80,7 @@ void bootcount_store(ulong a)
> #endif
> }
>
> -ulong bootcount_load(void)
> +__weak ulong bootcount_load(void)
> {
> void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
>
> @@ -95,3 +98,4 @@ ulong bootcount_load(void)
> return in_be32(reg);
> #endif
> }
> +#endif
> diff --git a/drivers/bootcount/bootcount_at91.c b/drivers/bootcount/bootcount_at91.c
> new file mode 100644
> index 0000000..7cfe14d
> --- /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/arch/blackfin/cpu/bootcount.c b/drivers/bootcount/bootcount_blackfin.c
> similarity index 100%
> rename from arch/blackfin/cpu/bootcount.c
> rename to drivers/bootcount/bootcount_blackfin.c
> diff --git a/drivers/bootcount/bootcount_davinci.c b/drivers/bootcount/bootcount_davinci.c
> new file mode 100644
> index 0000000..e0471f1
> --- /dev/null
> +++ b/drivers/bootcount/bootcount_davinci.c
> @@ -0,0 +1,72 @@
> +/*
> + * (C) Copyright 2011
> + * Heiko Schocher, DENX Software Engineering, hs at 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>
> +#include <asm/arch/da850_lowlevel.h>
> +#include <asm/arch/davinci_misc.h>
> +
> +#ifdef CONFIG_BOOTCOUNT_LE
> +static inline void bc_out32(volatile u32 *addr, u32 data)
> +{
> + out_le32(addr, data);
> +}
> +
> +static inline u32 bc_in32(volatile u32 *addr)
> +{
> + return in_le32(addr);
> +}
> +#else
> +static inline void bc_out32(volatile u32 *addr, u32 data)
> +{
> + out_be32(addr, data);
> +}
> +
> +static inline u32 bc_in32(volatile u32 *addr)
> +{
> + return in_be32(addr);
> +}
> +#endif
> +
> +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);
> + bc_out32(®->scratch0, a);
> + bc_out32(®->scratch1, BOOTCOUNT_MAGIC);
> +}
> +
> +ulong bootcount_load(void)
> +{
> + struct davinci_rtc *reg =
> + (struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
> +
> + if (bc_in32(®->scratch1) != BOOTCOUNT_MAGIC)
> + return 0;
> + else
> + return bc_in32(®->scratch0);
> +}
> diff --git a/drivers/bootcount/bootcount_ram.c b/drivers/bootcount/bootcount_ram.c
> new file mode 100644
> index 0000000..8655af7
> --- /dev/null
> +++ b/drivers/bootcount/bootcount_ram.c
> @@ -0,0 +1,72 @@
> +/*
> + * (C) Copyright 2010
> + * Heiko Schocher, DENX Software Engineering, hs at 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;
> +}
> diff --git a/include/configs/calimain.h b/include/configs/calimain.h
> index 6b68f10..f2815f9 100644
> --- a/include/configs/calimain.h
> +++ b/include/configs/calimain.h
> @@ -354,6 +354,7 @@
> #define CONFIG_SYS_INIT_SP_ADDR (0x8001ff00)
>
> #define CONFIG_BOOTCOUNT_LIMIT
> +#define CONFIG_BOOTCOUNT_LE /* Use little-endian accessors */
> #define CONFIG_SYS_BOOTCOUNT_ADDR DAVINCI_RTC_BASE
>
> #ifndef __ASSEMBLY__
> diff --git a/include/configs/km/km_arm.h b/include/configs/km/km_arm.h
> index c73a10c..229745a 100644
> --- a/include/configs/km/km_arm.h
> +++ b/include/configs/km/km_arm.h
> @@ -274,6 +274,8 @@ int get_scl(void);
> #define CONFIG_KM_RESERVED_PRAM 0x801000
> /* address for the bootcount (taken from end of RAM) */
> #define BOOTCOUNT_ADDR (CONFIG_KM_RESERVED_PRAM)
> +/* Use generic bootcount RAM driver */
> +#define CONFIG_BOOTCOUNT_RAM
>
> /* enable POST tests */
> #define CONFIG_POST (CONFIG_SYS_POST_MEM_REGIONS)
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