diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/misc/fsl_law.c | 70 |
2 files changed, 71 insertions, 0 deletions
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 78cec21fba..67521720e7 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -28,6 +28,7 @@ LIB := $(obj)libmisc.a COBJS-y += ali512x.o COBJS-y += ns87308.o COBJS-y += status_led.o +COBJS-$(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 0000000000..8bdf5a7f41 --- /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 ; +} |