117 lines
2.7 KiB
C
Executable File
117 lines
2.7 KiB
C
Executable File
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2013-2019, 2021 The Linux Foundation. All rights reserved.
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* Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
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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/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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struct boot_stats {
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uint32_t bootloader_start;
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uint32_t bootloader_end;
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uint32_t bootloader_load_boot_start;
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uint32_t bootloader_load_boot_end;
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uint32_t bootloader_load_vendor_boot_start;
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uint32_t bootloader_load_vendor_boot_end;
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uint32_t bootloader_load_init_boot_start;
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uint32_t bootloader_load_init_boot_end;
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} __packed;
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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 __iomem *boot_stats;
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static int mpm_parse_dt(void)
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{
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struct device_node *np_imem, *np_mpm2;
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np_imem = of_find_compatible_node(NULL, NULL,
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"qcom,msm-imem-boot_stats");
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if (!np_imem) {
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pr_err("can't find qcom,msm-imem node\n");
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return -ENODEV;
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}
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boot_stats = of_iomap(np_imem, 0);
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if (!boot_stats) {
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pr_err("boot_stats: Can't map imem\n");
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goto err1;
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}
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np_mpm2 = of_find_compatible_node(NULL, NULL,
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"qcom,mpm2-sleep-counter");
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if (!np_mpm2) {
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pr_err("mpm_counter: can't find DT node\n");
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goto err1;
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}
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if (of_property_read_u32(np_mpm2, "clock-frequency", &mpm_counter_freq))
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goto err2;
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if (of_get_address(np_mpm2, 0, NULL, NULL)) {
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mpm_counter_base = of_iomap(np_mpm2, 0);
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if (!mpm_counter_base) {
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pr_err("mpm_counter: can't map counter base\n");
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goto err2;
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}
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} else
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goto err2;
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return 0;
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err2:
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of_node_put(np_mpm2);
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err1:
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of_node_put(np_imem);
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return -ENODEV;
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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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readl_relaxed(&boot_stats->bootloader_start));
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pr_info("KPI: Bootloader end count = %u\n",
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readl_relaxed(&boot_stats->bootloader_end));
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pr_info("KPI: Bootloader load kernel count = %u\n",
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readl_relaxed(&boot_stats->bootloader_load_boot_end) -
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readl_relaxed(&boot_stats->bootloader_load_boot_start));
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pr_info("KPI: Kernel MPM timestamp = %u\n",
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readl_relaxed(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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static int __init boot_stats_init(void)
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{
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int ret;
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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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iounmap(boot_stats);
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iounmap(mpm_counter_base);
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return 0;
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}
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module_init(boot_stats_init);
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static void __exit boot_stats_exit(void)
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{
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}
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module_exit(boot_stats_exit)
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MODULE_DESCRIPTION("MSM boot stats info driver");
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MODULE_LICENSE("GPL");
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