85xx: Move LAW init code into C
Move the initialization of the LAWs into C code and provide an API
to allow modification of LAWs after init.
Board code is responsible to provide a law_table and num_law_entries.
We should be able to use the same code on 86xx as well.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 78cec21..67521720 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -28,6 +28,7 @@
COBJS-y += ali512x.o
COBJS-y += ns87308.o
COBJS-y += status_led.o
+COBJS-$(CONFIG_FSL_LAW) += fsl_law.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/misc/fsl_law.c b/drivers/misc/fsl_law.c
new file mode 100644
index 0000000..8bdf5a7
--- /dev/null
+++ b/drivers/misc/fsl_law.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2008 Freescale Semiconductor, Inc.
+ *
+ * (C) Copyright 2000
+ * 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 <asm/fsl_law.h>
+#include <asm/io.h>
+
+#define LAWAR_EN 0x80000000
+
+void set_law(u8 idx, phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
+{
+ volatile u32 *base = (volatile u32 *)(CFG_IMMR + 0xc08);
+ volatile u32 *lawbar = base + 8 * idx;
+ volatile u32 *lawar = base + 8 * idx + 2;
+
+ out_be32(lawbar, addr >> 12);
+ out_be32(lawar, LAWAR_EN | ((u32)id << 20) | (u32)sz);
+
+ return ;
+}
+
+void disable_law(u8 idx)
+{
+ volatile u32 *base = (volatile u32 *)(CFG_IMMR + 0xc08);
+ volatile u32 *lawbar = base + 8 * idx;
+ volatile u32 *lawar = base + 8 * idx + 2;
+
+ out_be32(lawar, 0);
+ out_be32(lawbar, 0);
+
+ return;
+}
+
+void init_laws(void)
+{
+ int i;
+ u8 law_idx = 0;
+
+ for (i = 0; i < num_law_entries; i++) {
+ if (law_table[i].index != -1)
+ law_idx = law_table[i].index;
+
+ set_law(law_idx++, law_table[i].addr,
+ law_table[i].size, law_table[i].trgt_id);
+ }
+
+ return ;
+}