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Diffstat (limited to 'arch/powerpc/cpu/ppc4xx/commproc.c')
-rw-r--r--arch/powerpc/cpu/ppc4xx/commproc.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/ppc4xx/commproc.c b/arch/powerpc/cpu/ppc4xx/commproc.c
new file mode 100644
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+++ b/arch/powerpc/cpu/ppc4xx/commproc.c
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+/*
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@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
+ *
+ *
+ * Atapted for ppc4XX by Denis Peter
+ */
+
+#include <common.h>
+#include <commproc.h>
+#include <asm/io.h>
+
+#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
+
+#if defined(CONFIG_SYS_POST_WORD_ADDR)
+# define _POST_ADDR ((CONFIG_SYS_OCM_DATA_ADDR) + (CONFIG_SYS_POST_WORD_ADDR))
+#elif defined(CONFIG_SYS_POST_ALT_WORD_ADDR)
+# define _POST_ADDR (CONFIG_SYS_POST_ALT_WORD_ADDR)
+#endif
+
+void post_word_store (ulong a)
+{
+ volatile void *save_addr = (volatile void *)(_POST_ADDR);
+
+ out_be32(save_addr, a);
+}
+
+ulong post_word_load (void)
+{
+ volatile void *save_addr = (volatile void *)(_POST_ADDR);
+
+ return in_be32(save_addr);
+}
+
+#endif /* CONFIG_POST || CONFIG_LOGBUFFER*/
+
+#ifdef CONFIG_BOOTCOUNT_LIMIT
+
+void bootcount_store (ulong a)
+{
+ volatile ulong *save_addr =
+ (volatile ulong *)(CONFIG_SYS_OCM_DATA_ADDR + 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_OCM_DATA_ADDR + CONFIG_SYS_BOOTCOUNT_ADDR);
+
+ if (save_addr[1] != BOOTCOUNT_MAGIC)
+ return 0;
+ else
+ return save_addr[0];
+}
+
+#endif /* CONFIG_BOOTCOUNT_LIMIT */