android_kernel_samsung_hero.../drivers/soc/qcom/boot_stats.c
2016-08-17 16:41:52 +08:00

127 lines
3.2 KiB
C

/* Copyright (c) 2013-2014, 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/kernel.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/cpu.h>
#include <linux/sched.h>
#include <linux/of.h>
#include <linux/of_address.h>
struct boot_stats {
uint32_t bootloader_start;
uint32_t bootloader_end;
uint32_t bootloader_display;
uint32_t bootloader_load_kernel;
};
#if defined(CONFIG_SEC_BSP)
uint32_t bootloader_start;
uint32_t bootloader_end;
uint32_t bootloader_display;
uint32_t bootloader_load_kernel;
#endif
static void __iomem *mpm_counter_base;
static uint32_t mpm_counter_freq;
static struct boot_stats __iomem *boot_stats;
static int mpm_parse_dt(void)
{
struct device_node *np;
u32 freq;
np = of_find_compatible_node(NULL, NULL, "qcom,msm-imem-boot_stats");
if (!np) {
pr_err("can't find qcom,msm-imem node\n");
return -ENODEV;
}
boot_stats = of_iomap(np, 0);
if (!boot_stats) {
pr_err("boot_stats: Can't map imem\n");
return -ENODEV;
}
np = of_find_compatible_node(NULL, NULL, "qcom,mpm2-sleep-counter");
if (!np) {
pr_err("mpm_counter: can't find DT node\n");
return -ENODEV;
}
if (!of_property_read_u32(np, "clock-frequency", &freq))
mpm_counter_freq = freq;
else
return -ENODEV;
if (of_get_address(np, 0, NULL, NULL)) {
mpm_counter_base = of_iomap(np, 0);
if (!mpm_counter_base) {
pr_err("mpm_counter: cant map counter base\n");
return -ENODEV;
}
}
return 0;
}
static void print_boot_stats(void)
{
#if defined(CONFIG_SEC_BSP)
bootloader_start = readl_relaxed(&boot_stats->bootloader_start);
bootloader_end = readl_relaxed(&boot_stats->bootloader_end);
bootloader_display = readl_relaxed(&boot_stats->bootloader_display);
bootloader_load_kernel = readl_relaxed(&boot_stats->bootloader_load_kernel);
#endif
pr_info("KPI: Bootloader start count = %u\n",
readl_relaxed(&boot_stats->bootloader_start));
pr_info("KPI: Bootloader end count = %u\n",
readl_relaxed(&boot_stats->bootloader_end));
pr_info("KPI: Bootloader display count = %u\n",
readl_relaxed(&boot_stats->bootloader_display));
pr_info("KPI: Bootloader load kernel count = %u\n",
readl_relaxed(&boot_stats->bootloader_load_kernel));
pr_info("KPI: Kernel MPM timestamp = %u\n",
readl_relaxed(mpm_counter_base));
pr_info("KPI: Kernel MPM Clock frequency = %u\n",
mpm_counter_freq);
}
#if defined(CONFIG_SEC_BSP)
unsigned int get_boot_stat_time(void)
{
return readl_relaxed(mpm_counter_base);
}
#endif
int boot_stats_init(void)
{
int ret;
ret = mpm_parse_dt();
if (ret < 0)
return -ENODEV;
print_boot_stats();
iounmap(boot_stats);
#if !defined(CONFIG_SEC_BSP)
iounmap(mpm_counter_base);
#endif
return 0;
}