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/* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <soc/qcom/scm-boot.h>
#include <asm/cacheflush.h>
#include <asm/cputype.h>
#include <asm/smp_plat.h>
#include "idle.h"
#include "pm-boot.h"
#define CPU_INDEX(cluster, cpu) (cluster * MAX_CPUS_PER_CLUSTER + cpu)
static void (*msm_pm_boot_before_pc)(unsigned int cpu, unsigned long entry);
static void (*msm_pm_boot_after_pc)(unsigned int cpu);
static int msm_pm_tz_boot_init(void)
{
phys_addr_t warmboot_addr = virt_to_phys(msm_pm_boot_entry);
if (scm_is_mc_boot_available()) {
return scm_set_warm_boot_addr_mc_for_all(warmboot_addr);
} else {
unsigned int flag = 0;
if (num_possible_cpus() == 1)
flag = SCM_FLAG_WARMBOOT_CPU0;
else if (num_possible_cpus() == 2)
flag = SCM_FLAG_WARMBOOT_CPU0 | SCM_FLAG_WARMBOOT_CPU1;
else if (num_possible_cpus() == 4)
flag = SCM_FLAG_WARMBOOT_CPU0 | SCM_FLAG_WARMBOOT_CPU1 |
SCM_FLAG_WARMBOOT_CPU2 | SCM_FLAG_WARMBOOT_CPU3;
else
__WARN();
return scm_set_boot_addr(virt_to_phys(msm_pm_boot_entry), flag);
}
}
static void msm_pm_write_boot_vector(unsigned int cpu, unsigned long address)
{
uint32_t clust_id = MPIDR_AFFINITY_LEVEL(cpu_logical_map(cpu), 1);
uint32_t cpu_id = MPIDR_AFFINITY_LEVEL(cpu_logical_map(cpu), 0);
unsigned long *start_address;
unsigned long *end_address;
if (clust_id >= MAX_NUM_CLUSTER || cpu_id >= MAX_CPUS_PER_CLUSTER)
BUG();
msm_pm_boot_vector[CPU_INDEX(clust_id, cpu_id)] = address;
start_address = &msm_pm_boot_vector[CPU_INDEX(clust_id, cpu_id)];
end_address = &msm_pm_boot_vector[CPU_INDEX(clust_id, cpu_id + 1)];
dmac_clean_range((void *)start_address, (void *)end_address);
}
static void msm_pm_config_tz_before_pc(unsigned int cpu,
unsigned long entry)
{
msm_pm_write_boot_vector(cpu, entry);
}
void msm_pm_boot_config_before_pc(unsigned int cpu, unsigned long entry)
{
if (msm_pm_boot_before_pc)
msm_pm_boot_before_pc(cpu, entry);
}
void msm_pm_boot_config_after_pc(unsigned int cpu)
{
if (msm_pm_boot_after_pc)
msm_pm_boot_after_pc(cpu);
}
static int __init msm_pm_boot_init(void)
{
int ret = 0;
ret = msm_pm_tz_boot_init();
msm_pm_boot_before_pc = msm_pm_config_tz_before_pc;
msm_pm_boot_after_pc = NULL;
return ret;
}
postcore_initcall(msm_pm_boot_init);
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