Initial revision

1 files changed, 112 insertions, 0 deletions

diff --git a/cpu/mpc8xx/commproc.c b/cpu/mpc8xx/commproc.c
new file mode 100644
index 0000000..62a4458
--- /dev/null
+++ b/cpu/mpc8xx/commproc.c
@@ -0,0 +1,112 @@
+/*
+ * (C) Copyright 2000-2002
+ * 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
+ */
+
+#include <common.h>
+#include <commproc.h>
+
+#ifdef CFG_ALLOC_DPRAM
+
+int dpram_init (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	/* Reclaim the DP memory for our use. */
+	gd->dp_alloc_base = CPM_DATAONLY_BASE;
+	gd->dp_alloc_top  = CPM_DATAONLY_BASE + CPM_DATAONLY_SIZE;
+
+	return (0);
+}
+
+/* Allocate some memory from the dual ported ram.  We may want to
+ * enforce alignment restrictions, but right now everyone is a good
+ * citizen.
+ */
+uint dpram_alloc (uint size)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	uint addr = gd->dp_alloc_base;
+
+	if ((gd->dp_alloc_base + size) >= gd->dp_alloc_top)
+		return (CPM_DP_NOSPACE);
+
+	gd->dp_alloc_base += size;
+
+	return addr;
+}
+
+uint dpram_base (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	return gd->dp_alloc_base;
+}
+
+/* Allocate some memory from the dual ported ram.  We may want to
+ * enforce alignment restrictions, but right now everyone is a good
+ * citizen.
+ */
+uint dpram_alloc_align (uint size, uint align)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	uint addr, mask = align - 1;
+
+	addr = (gd->dp_alloc_base + mask) & ~mask;
+
+	if ((addr + size) >= gd->dp_alloc_top)
+		return (CPM_DP_NOSPACE);
+
+	gd->dp_alloc_base = addr + size;
+
+	return addr;
+}
+
+uint dpram_base_align (uint align)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	uint mask = align - 1;
+
+	return (gd->dp_alloc_base + mask) & ~mask;
+}
+#endif	/* CFG_ALLOC_DPRAM */
+
+#ifdef CONFIG_POST
+
+void post_word_store (ulong a)
+{
+	volatile void *save_addr =
+		((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR;
+
+	*(volatile ulong *) save_addr = a;
+}
+
+ulong post_word_load (void)
+{
+	volatile void *save_addr =
+		((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR;
+
+	return *(volatile ulong *) save_addr;
+}
+
+#endif	/* CONFIG_POST */