97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/*
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* Copyright (c) 2011 Aeroflex Gaisler
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*
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* BSD license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <asm-leon/leon.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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unsigned int
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leon3_ahbslv_scan (register unsigned int vendor, register unsigned int driver)
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{
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register unsigned int conf, i, *confp;
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register unsigned int cfg_area =
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(unsigned int) (LEON3_IO_AREA | LEON3_CONF_AREA |
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LEON3_AHB_SLAVE_CONF_AREA);
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for (i = 0; i < LEON3_AHB_SLAVES; i++)
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{
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confp = (unsigned int *) (cfg_area + (i * LEON3_AHB_CONF_WORDS * 4));
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conf = *confp;
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if ((amba_vendor (conf) == vendor) && (amba_device (conf) == driver))
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{
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return (unsigned int) confp;
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}
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}
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return 0;
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}
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unsigned int
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leon3_getbase (register unsigned int *mbar, register unsigned int iobase,
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int *irq)
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{
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register unsigned int conf = mbar[1];
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return (unsigned int) (((iobase & 0xfff00000) |
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((conf & 0xfff00000) >> 12)) & (((conf & 0x0000fff0)
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<< 4) |
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0xfff00000));
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}
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unsigned int
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leon3_apbslv_scan (register unsigned int base,
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register unsigned int vendor,
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register unsigned int driver,
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amba_apb_device * apbdevs, int c)
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{
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register unsigned int conf, i, *confp;
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int j = 0;
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for (i = 0; i < LEON3_APB_SLAVES; i++)
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{
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confp = (unsigned int *) (base + (i * LEON3_APB_CONF_WORDS * 4));
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conf = *confp;
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if ((amba_vendor (conf) == vendor) && (amba_device (conf) == driver))
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{
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if (j < c)
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{
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apbdevs[j].start = leon3_getbase (confp, base, 0);
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apbdevs[j].irq = amba_irq (conf);
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j++;
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}
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}
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}
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return j;
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}
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unsigned int
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leon3_getapbbase (register unsigned int vendor,
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register unsigned int driver,
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amba_apb_device * apbdevs, int c)
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{
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unsigned int apb = leon3_ahbslv_scan (VENDOR_GAISLER, GAISLER_APBMST);
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apb = (*(unsigned int *) (apb + 16)) & LEON3_IO_AREA;
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apb |= LEON3_CONF_AREA;
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return leon3_apbslv_scan (apb, vendor, driver, apbdevs, c);
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}
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