diff options
Diffstat (limited to 'sys/arm/xscale/i8134x/i81342_mcu.c')
| -rw-r--r-- | sys/arm/xscale/i8134x/i81342_mcu.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/sys/arm/xscale/i8134x/i81342_mcu.c b/sys/arm/xscale/i8134x/i81342_mcu.c new file mode 100644 index 000000000000..a144774233ff --- /dev/null +++ b/sys/arm/xscale/i8134x/i81342_mcu.c @@ -0,0 +1,58 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2006 Olivier Houchard + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/module.h> + +#include <machine/bus.h> +#include <arm/xscale/i8134x/i81342reg.h> +#include <arm/xscale/i8134x/i81342var.h> + +void +i81342_sdram_bounds(bus_space_tag_t bt, bus_space_handle_t bh, + vm_paddr_t *start, vm_size_t *size) +{ + uint32_t reg; + int bank_nb; + + reg = bus_space_read_4(bt, bh, SMC_SDBR); + *start = (reg & SMC_SDBR_BASEADDR_MASK); + reg = bus_space_read_4(bt, bh, SMC_SBSR); + if (reg & SMC_SBSR_BANK_NB) + bank_nb = 1; + else + bank_nb = 2; + + *size = (reg & SMC_SBSR_BANK_SZ_MASK) * bank_nb; +} |