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