ARM: highbank: Add boot counter support

Add boot counter support using an sysreg which is persistent across reset.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>

diff --git a/arch/arm/cpu/armv7/highbank/Makefile b/arch/arm/cpu/armv7/highbank/Makefile
index 76faeb0fe1067ff27209fbe2ea9e845f216b8bae..917c3a36ba5faa7321975904c55026251028bec6 100644 (file)
--- 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
+COBJS  := timer.o bootcount.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
new file mode 100644 (file)
index 0000000..9ca0656
--- /dev/null
+++ b/arch/arm/cpu/armv7/highbank/bootcount.c
@@ -0,0 +1,36 @@
+/*
+ * 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/board/highbank/highbank.c b/board/highbank/highbank.c
index 5f34fec45019cb4d2e0879b6a3aa6194168b45b2..096e2f63727b14ed9987695c4b77a426d298257b 100644 (file)
--- a/board/highbank/highbank.c
+++ b/board/highbank/highbank.c
@@ -21,6 +21,7 @@
 #include <scsi.h>
 
 #include <asm/sizes.h>
+#include <asm/io.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 

diff --git a/include/configs/highbank.h b/include/configs/highbank.h
index e7172734916db91270364e8ab1eae5b5af95b347..801f4ae67c16de111695b106b50aff0d31733ea0 100644 (file)
--- a/include/configs/highbank.h
+++ b/include/configs/highbank.h
@@ -41,6 +41,9 @@
 #define CONFIG_BAUDRATE                        38400
 #define CONFIG_SYS_BAUDRATE_TABLE      { 9600, 19200, 38400, 57600, 115200 }
 
+#define CONFIG_BOOTCOUNT_LIMIT
+#define CONFIG_SYS_BOOTCOUNT_ADDR      0xfff3cf0c
+
 #define CONFIG_MISC_INIT_R
 #define CONFIG_SCSI_AHCI
 #define CONFIG_SCSI_AHCI_PLAT