1 /*
2 * Copyright (c) 2011 Aeroflex Gaisler
3 *
4 * BSD license:
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25
26 #include <asm-leon/leon.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30
31 unsigned int
leon3_ahbslv_scan(register unsigned int vendor,register unsigned int driver)32 leon3_ahbslv_scan (register unsigned int vendor, register unsigned int driver)
33 {
34 register unsigned int conf, i, *confp;
35 register unsigned int cfg_area =
36 (unsigned int) (LEON3_IO_AREA | LEON3_CONF_AREA |
37 LEON3_AHB_SLAVE_CONF_AREA);
38 for (i = 0; i < LEON3_AHB_SLAVES; i++)
39 {
40 confp = (unsigned int *) (cfg_area + (i * LEON3_AHB_CONF_WORDS * 4));
41 conf = *confp;
42 if ((amba_vendor (conf) == vendor) && (amba_device (conf) == driver))
43 {
44 return (unsigned int) confp;
45 }
46 }
47 return 0;
48 }
49
50 unsigned int
leon3_getbase(register unsigned int * mbar,register unsigned int iobase,int * irq)51 leon3_getbase (register unsigned int *mbar, register unsigned int iobase,
52 int *irq)
53 {
54 register unsigned int conf = mbar[1];
55 return (unsigned int) (((iobase & 0xfff00000) |
56 ((conf & 0xfff00000) >> 12)) & (((conf & 0x0000fff0)
57 << 4) |
58 0xfff00000));
59 }
60
61 unsigned int
leon3_apbslv_scan(register unsigned int base,register unsigned int vendor,register unsigned int driver,amba_apb_device * apbdevs,int c)62 leon3_apbslv_scan (register unsigned int base,
63 register unsigned int vendor,
64 register unsigned int driver,
65 amba_apb_device * apbdevs, int c)
66 {
67 register unsigned int conf, i, *confp;
68 int j = 0;
69 for (i = 0; i < LEON3_APB_SLAVES; i++)
70 {
71 confp = (unsigned int *) (base + (i * LEON3_APB_CONF_WORDS * 4));
72 conf = *confp;
73 if ((amba_vendor (conf) == vendor) && (amba_device (conf) == driver))
74 {
75 if (j < c)
76 {
77 apbdevs[j].start = leon3_getbase (confp, base, 0);
78 apbdevs[j].irq = amba_irq (conf);
79 j++;
80 }
81 }
82 }
83 return j;
84 }
85
86
87 unsigned int
leon3_getapbbase(register unsigned int vendor,register unsigned int driver,amba_apb_device * apbdevs,int c)88 leon3_getapbbase (register unsigned int vendor,
89 register unsigned int driver,
90 amba_apb_device * apbdevs, int c)
91 {
92 unsigned int apb = leon3_ahbslv_scan (VENDOR_GAISLER, GAISLER_APBMST);
93 apb = (*(unsigned int *) (apb + 16)) & LEON3_IO_AREA;
94 apb |= LEON3_CONF_AREA;
95 return leon3_apbslv_scan (apb, vendor, driver, apbdevs, c);
96 }
97