source: rtems/bsps/bfin/shared/mmu.c @ e2bd1f6

5
Last change on this file since e2bd1f6 was e2bd1f6, checked in by Sebastian Huber <sebastian.huber@…>, on Mar 21, 2018 at 3:38:43 PM

bsp/bfin: Move libcpu content to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

  • Property mode set to 100644
File size: 1.3 KB
Line 
1/*  Blackfin MMU Support
2 *
3 *  Copyright (c) 2008 Kallisti Labs, Los Gatos, CA, USA
4 *             written by Allan Hessenflow <allanh@kallisti.com>
5 *
6 *  The license and distribution terms for this file may be
7 *  found in the file LICENSE in this distribution or at
8 *  http://www.rtems.org/license/LICENSE.
9 */
10
11
12#include <rtems.h>
13
14#include <libcpu/memoryRegs.h>
15#include <libcpu/mmu.h>
16
17/* NOTE: see notes in mmu.h */
18
19void bfin_mmu_init(bfin_mmu_config_t *config) {
20  intptr_t addr;
21  intptr_t data;
22  int i;
23
24  addr = (intptr_t) ICPLB_ADDR0;
25  data = (intptr_t) ICPLB_DATA0;
26  for (i = 0; i < sizeof(config->instruction) / sizeof(config->instruction[0]);
27       i++) {
28    *(uint32_t volatile *) addr = (uint32_t) config->instruction[i].address;
29    addr += ICPLB_ADDR_PITCH;
30    *(uint32_t volatile *) data = config->instruction[i].flags;
31    data += ICPLB_DATA_PITCH;
32  }
33  *(uint32_t volatile *) IMEM_CONTROL |= IMEM_CONTROL_ENICPLB;
34  addr = (intptr_t) DCPLB_ADDR0;
35  data = (intptr_t) DCPLB_DATA0;
36  for (i = 0; i < sizeof(config->data) / sizeof(config->data[0]); i++) {
37    *(uint32_t volatile *) addr = (uint32_t) config->data[i].address;
38    addr += DCPLB_ADDR_PITCH;
39    *(uint32_t volatile *) data = config->data[i].flags;
40    data += DCPLB_DATA_PITCH;
41  }
42  *(uint32_t volatile *) DMEM_CONTROL |= DMEM_CONTROL_ENDCPLB;
43}
44
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