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Commit d15837f3 authored by Murali Nalajala's avatar Murali Nalajala
Browse files

drivers: soc: qcom: Add snapshot of boot stats driver 



Snapshot of boot stats driver as of msm-4.14 commmit <faf8976>
(Merge "Revert "msm: ADSPRPC: Add early wake up signal support"")

This driver is useful to debug the bootloader KPIs.

Change-Id: I0488247acef0c50d777b05d1605f93cbbae32abd
Signed-off-by: default avatarMurali Nalajala <mnalajal@codeaurora.org>
parent 140cc17e

drivers/soc/qcom/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -230,6 +230,14 @@ config MSM_SERVICE_NOTIFIER 
	  like audio, the identifier for which is provided by the service

	  locator.



config MSM_BOOT_STATS

	tristate "Use MSM boot stats reporting"

	help

	  Use this to report msm boot stats such as bootloader throughput,

	  display init, total boot time.

	  This figures are reported in mpm sleep clock cycles and have a

	  resolution of 31 bits as 1 bit is used as an overflow check.



config QCOM_QMI_HELPERS

	tristate

	depends on ARCH_QCOM || COMPILE_TEST

drivers/soc/qcom/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ obj-$(CONFIG_QCOM_RPMH) += qcom_rpmh.o 
qcom_rpmh-y			+= rpmh-rsc.o

qcom_rpmh-y			+= rpmh.o

obj-$(CONFIG_QCOM_SOC_SLEEP_STATS)	+= soc_sleep_stats.o

obj-$(CONFIG_MSM_BOOT_STATS) += boot_stats.o

obj-$(CONFIG_QCOM_SMD_RPM)	+= smd-rpm.o

obj-$(CONFIG_QCOM_SMEM) +=	smem.o

obj-$(CONFIG_QCOM_SMEM_STATE) += smem_state.o

drivers/soc/qcom/boot_stats.c

0 → 100644
+113 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.

 */



#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;

};



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_imem, *np_mpm2;



	np_imem = of_find_compatible_node(NULL, NULL,

				"qcom,msm-imem-boot_stats");

	if (!np_imem) {

		pr_err("can't find qcom,msm-imem node\n");

		return -ENODEV;

	}

	boot_stats = of_iomap(np_imem, 0);

	if (!boot_stats) {

		pr_err("boot_stats: Can't map imem\n");

		goto err1;

	}



	np_mpm2 = of_find_compatible_node(NULL, NULL,

				"qcom,mpm2-sleep-counter");

	if (!np_mpm2) {

		pr_err("mpm_counter: can't find DT node\n");

		goto err1;

	}



	if (of_property_read_u32(np_mpm2, "clock-frequency", &mpm_counter_freq))

		goto err2;



	if (of_get_address(np_mpm2, 0, NULL, NULL)) {

		mpm_counter_base = of_iomap(np_mpm2, 0);

		if (!mpm_counter_base) {

			pr_err("mpm_counter: cant map counter base\n");

			goto err2;

		}

	} else

		goto err2;



	return 0;



err2:

	of_node_put(np_mpm2);

err1:

	of_node_put(np_imem);

	return -ENODEV;

}



static void print_boot_stats(void)

{

	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);

}



static int __init boot_stats_init(void)

{

	int ret;



	ret = mpm_parse_dt();

	if (ret < 0)

		return -ENODEV;



	print_boot_stats();



	iounmap(boot_stats);

	iounmap(mpm_counter_base);



	return 0;

}

module_init(boot_stats_init);



static void __exit boot_stats_exit(void)

{

}

module_exit(boot_stats_exit)



MODULE_DESCRIPTION("MSM boot stats info driver");

MODULE_LICENSE("GPL v2");