101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/smp.h>
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#include <linux/clk.h>
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#include <linux/cpu.h>
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#include <linux/sched.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <mach/msm_iomap.h>
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#include "boot_stats.h"
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#define MSM_BOOT_STATS_IMEM_START (MSM_IMEM_BASE+0x6b0)
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static void __iomem *mpm_counter_base;
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static uint32_t mpm_counter_freq;
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static struct boot_stats *boot_stats =
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(void __iomem *)(MSM_BOOT_STATS_IMEM_START);
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static const struct of_device_id mpm_counter_of_match[] = {
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{ .compatible = "qcom,mpm2-sleep-counter", },
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{},
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};
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static int mpm_parse_dt(void)
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{
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struct device_node *np;
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u32 freq;
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np = of_find_matching_node(NULL, mpm_counter_of_match);
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if (!np) {
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pr_err("mpm_counter: can't find DT node\n");
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return -ENODEV;
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}
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if (!of_property_read_u32(np, "clock-frequency", &freq))
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mpm_counter_freq = freq;
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else
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return -ENODEV;
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if (of_get_address(np, 0, NULL, NULL)) {
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mpm_counter_base = of_iomap(np, 0);
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if (!mpm_counter_base) {
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pr_err("mpm_counter: cant map counter base\n");
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return -ENODEV;
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}
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}
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return 0;
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}
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static void print_boot_stats(void)
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{
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pr_info("KPI: Bootloader start count = %u\n",
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boot_stats->bootloader_start);
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pr_info("KPI: Bootloader end count = %u\n",
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boot_stats->bootloader_end);
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pr_info("KPI: Bootloader display count = %u\n",
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boot_stats->bootloader_display);
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pr_info("KPI: Bootloader load kernel count = %u\n",
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boot_stats->bootloader_load_kernel);
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pr_info("KPI: Kernel MPM timestamp = %u\n",
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__raw_readl(mpm_counter_base));
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pr_info("KPI: Kernel MPM Clock frequency = %u\n",
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mpm_counter_freq);
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}
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int boot_stats_init(void)
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{
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int ret;
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if (!boot_stats)
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return -ENODEV;
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ret = mpm_parse_dt();
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if (ret < 0)
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return -ENODEV;
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print_boot_stats();
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return 0;
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}
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