blob: a2241687cc293e1d98069d8aa86548acc07683af (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/**
* @file
*
* @ingroup raspberrypi
*
* @brief Startup code.
*/
/*
* Copyright (c) 2013 by Alan Cudmore
* based on work by:
* Copyright (c) 2009
* embedded brains GmbH
* Obere Lagerstr. 30
* D-82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE
*/
#include <bspopts.h>
#include <bsp/start.h>
#include <bsp/raspberrypi.h>
#include <bsp/mmu.h>
static void BSP_START_TEXT_SECTION raspberrypi_cache_setup(void)
{
uint32_t ctrl = 0;
/* Disable MMU and cache, basic settings */
ctrl = arm_cp15_get_control();
ctrl &= ~(ARM_CP15_CTRL_I | ARM_CP15_CTRL_R | ARM_CP15_CTRL_C
| ARM_CP15_CTRL_V | ARM_CP15_CTRL_M);
ctrl |= ARM_CP15_CTRL_S;
arm_cp15_set_control(ctrl);
arm_cp15_cache_invalidate();
arm_cp15_tlb_invalidate();
}
void BSP_START_TEXT_SECTION bsp_start_hook_0(void)
{
raspberrypi_cache_setup();
}
void BSP_START_TEXT_SECTION bsp_start_hook_1(void)
{
bsp_start_copy_sections();
bsp_start_clear_bss();
}
|
