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authorStefan Roese <sr@denx.de>2010-04-28 10:47:36 +0200
committerWolfgang Denk <wd@denx.de>2010-05-06 23:28:48 +0200
commite4a95d112e5ea8368bfbdac6ff963d1b8dc63cf0 (patch)
treeafafdc9c765ed256552b8e852813624ee56f6307 /arch/powerpc/lib
parent7b2afd93818f81ad817825020a8c45c633559e77 (diff)
downloadu-boot-linaro-stable-e4a95d112e5ea8368bfbdac6ff963d1b8dc63cf0.tar.gz
powerpc: Consolidate bootcount_{store|load} for PowerPC
This patch consolidates bootcount_{store|load} for PowerPC by implementing a common version in arch/powerpc/lib/bootcount.c. This code is now used by all PowerPC variants that currently have these functions implemented. The functions now use the proper IO-accessor functions to read/write the values. This code also supports two different bootcount versions: a) Use 2 separate words (2 * 32bit) to store the bootcounter b) Use only 1 word (2 * 16bit) to store the bootcounter Version b) was already used by MPC5xxx. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> for 83xx parts Cc: Michael Zaidman <michael.zaidman@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Kim Phillips <kim.phillips@freescale.com> Cc: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'arch/powerpc/lib')
-rw-r--r--arch/powerpc/lib/Makefile1
-rw-r--r--arch/powerpc/lib/bootcount.c90
2 files changed, 91 insertions, 0 deletions
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index 334e45780..5f85502d1 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -33,6 +33,7 @@ SOBJS-y += reloc.o
COBJS-y += 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/arch/powerpc/lib/bootcount.c b/arch/powerpc/lib/bootcount.c
new file mode 100644
index 000000000..634652767
--- /dev/null
+++ b/arch/powerpc/lib/bootcount.c
@@ -0,0 +1,90 @@
+/*
+ * (C) Copyright 2010
+ * 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 <common.h>
+#include <asm/io.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_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_MPC8360)
+#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) */
+
+void bootcount_store(ulong a)
+{
+ void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
+
+#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
+ out_be32(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a);
+#else
+ out_be32(reg, a);
+ out_be32(reg + 4, BOOTCOUNT_MAGIC);
+#endif
+}
+
+ulong bootcount_load(void)
+{
+ void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
+
+#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
+ if (in_be16(reg + 2) != (BOOTCOUNT_MAGIC & 0xffff))
+ return 0;
+ else
+ return in_be16(reg);
+#else
+ if (in_be32(reg + 4) != BOOTCOUNT_MAGIC)
+ return 0;
+ else
+ return in_be32(reg);
+#endif
+}