80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2006-2022, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
*/
|
||
|
|
#include <rthw.h>
|
||
|
|
#include <rtthread.h>
|
||
|
|
|
||
|
|
#include "cpu.h"
|
||
|
|
|
||
|
|
#ifdef RT_USING_SMART
|
||
|
|
#include <ioremap.h>
|
||
|
|
#else
|
||
|
|
#define rt_ioremap(x, ...) (x)
|
||
|
|
#define rt_iounmap(x)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define DBG_TAG "libcpu.aarch64.cpu_spin_table"
|
||
|
|
#define DBG_LVL DBG_INFO
|
||
|
|
#include <rtdbg.h>
|
||
|
|
#include "cpu_ops_common.h"
|
||
|
|
|
||
|
|
#ifdef RT_USING_SMP
|
||
|
|
#ifdef RT_USING_FDT
|
||
|
|
#include <dtb_node.h>
|
||
|
|
|
||
|
|
static rt_uint64_t cpu_release_addr[RT_CPUS_NR];
|
||
|
|
|
||
|
|
static int spin_table_cpu_init(rt_uint32_t cpuid)
|
||
|
|
{
|
||
|
|
struct dtb_node *cpu = get_cpu_node(cpuid);
|
||
|
|
if (!cpu)
|
||
|
|
return -1; /* uninitialized cpu node in fdt */
|
||
|
|
|
||
|
|
int size;
|
||
|
|
rt_uint64_t *phead = (rt_uint64_t*)dtb_node_get_dtb_node_property_value(cpu, "cpu-release-addr", &size);
|
||
|
|
cpu_release_addr[cpuid] = fdt64_to_cpu(*phead);
|
||
|
|
|
||
|
|
LOG_D("Using release address 0x%p for CPU %d", cpu_release_addr[cpuid], cpuid);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int spin_table_cpu_boot(rt_uint32_t cpuid)
|
||
|
|
{
|
||
|
|
rt_uint64_t secondary_entry_pa = get_secondary_entry_pa();
|
||
|
|
if (!secondary_entry_pa)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
// map release_addr to addressable place
|
||
|
|
void *rel_va = (void *)cpu_release_addr[cpuid];
|
||
|
|
|
||
|
|
#ifdef RT_USING_SMART
|
||
|
|
rel_va = rt_ioremap(rel_va, sizeof(cpu_release_addr[0]));
|
||
|
|
#endif
|
||
|
|
if (!rel_va)
|
||
|
|
{
|
||
|
|
LOG_E("IO remap failing");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
__asm__ volatile("str %0, [%1]" ::"rZ"(secondary_entry_pa), "r"(rel_va));
|
||
|
|
__asm__ volatile("dsb sy");
|
||
|
|
__asm__ volatile("sev");
|
||
|
|
rt_iounmap(rel_va);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#endif /* RT_USING_FDT */
|
||
|
|
|
||
|
|
struct cpu_ops_t cpu_ops_spin_tbl = {
|
||
|
|
.method = "spin-table",
|
||
|
|
#ifdef RT_USING_FDT
|
||
|
|
.cpu_init = spin_table_cpu_init,
|
||
|
|
.cpu_boot = spin_table_cpu_boot,
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* RT_USING_SMP */
|