1 | /* |
---|
2 | * Copyright (c) 2013-2014 embedded brains GmbH. All rights reserved. |
---|
3 | * |
---|
4 | * embedded brains GmbH |
---|
5 | * Dornierstr. 4 |
---|
6 | * 82178 Puchheim |
---|
7 | * Germany |
---|
8 | * <info@embedded-brains.de> |
---|
9 | * |
---|
10 | * The license and distribution terms for this file may be |
---|
11 | * found in the file LICENSE in this distribution or at |
---|
12 | * http://www.rtems.org/license/LICENSE. |
---|
13 | */ |
---|
14 | |
---|
15 | #include <assert.h> |
---|
16 | |
---|
17 | #include <rtems/score/smpimpl.h> |
---|
18 | |
---|
19 | #include <libcpu/arm-cp15.h> |
---|
20 | |
---|
21 | #include <bsp/irq.h> |
---|
22 | #include <bsp/linker-symbols.h> |
---|
23 | #include <bsp/start.h> |
---|
24 | |
---|
25 | #include <socal/alt_rstmgr.h> |
---|
26 | #include <socal/alt_sysmgr.h> |
---|
27 | #include <socal/hps.h> |
---|
28 | #include <socal/socal.h> |
---|
29 | |
---|
30 | static void bsp_inter_processor_interrupt(void *arg) |
---|
31 | { |
---|
32 | _SMP_Inter_processor_interrupt_handler(); |
---|
33 | } |
---|
34 | |
---|
35 | uint32_t _CPU_SMP_Initialize(void) |
---|
36 | { |
---|
37 | uint32_t hardware_count = arm_gic_irq_processor_count(); |
---|
38 | uint32_t linker_count = (uint32_t) bsp_processor_count; |
---|
39 | |
---|
40 | return hardware_count <= linker_count ? hardware_count : linker_count; |
---|
41 | } |
---|
42 | |
---|
43 | bool _CPU_SMP_Start_processor(uint32_t cpu_index) |
---|
44 | { |
---|
45 | bool started; |
---|
46 | |
---|
47 | if (cpu_index == 1) { |
---|
48 | alt_write_word( |
---|
49 | ALT_SYSMGR_ROMCODE_ADDR + ALT_SYSMGR_ROMCODE_CPU1STARTADDR_OFST, |
---|
50 | ALT_SYSMGR_ROMCODE_CPU1STARTADDR_VALUE_SET((uint32_t) _start) |
---|
51 | ); |
---|
52 | |
---|
53 | alt_clrbits_word( |
---|
54 | ALT_RSTMGR_MPUMODRST_ADDR, |
---|
55 | ALT_RSTMGR_MPUMODRST_CPU1_SET_MSK |
---|
56 | ); |
---|
57 | |
---|
58 | started = true; |
---|
59 | } else { |
---|
60 | started = false; |
---|
61 | } |
---|
62 | |
---|
63 | return started; |
---|
64 | } |
---|
65 | |
---|
66 | void _CPU_SMP_Finalize_initialization(uint32_t cpu_count) |
---|
67 | { |
---|
68 | if (cpu_count > 0) { |
---|
69 | rtems_status_code sc; |
---|
70 | |
---|
71 | sc = rtems_interrupt_handler_install( |
---|
72 | ARM_GIC_IRQ_SGI_0, |
---|
73 | "IPI", |
---|
74 | RTEMS_INTERRUPT_UNIQUE, |
---|
75 | bsp_inter_processor_interrupt, |
---|
76 | NULL |
---|
77 | ); |
---|
78 | assert(sc == RTEMS_SUCCESSFUL); |
---|
79 | } |
---|
80 | } |
---|
81 | |
---|
82 | void _CPU_SMP_Send_interrupt(uint32_t target_processor_index) |
---|
83 | { |
---|
84 | arm_gic_irq_generate_software_irq( |
---|
85 | ARM_GIC_IRQ_SGI_0, |
---|
86 | ARM_GIC_IRQ_SOFTWARE_IRQ_TO_ALL_IN_LIST, |
---|
87 | (uint8_t) (1U << target_processor_index) |
---|
88 | ); |
---|
89 | } |
---|