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Commit 9620edfd authored by Abhimanyu Kapur's avatar Abhimanyu Kapur Committed by Matt Wagantall
Browse files

msm: boot_stats: Add snapshot of boot_stats driver 



Add a snapshot of the msm boot_stats driver as of commit
acdce027751d5a7488b283f0ce3111f873a5816d (Merge "defconfig: arm64: Enable
ONESHOT_SYNC for msm8994")

Change-Id: Iee7ec288fe44606b468dc533bb4221f8d018b3cb
Signed-off-by: default avatarStepan Moskovchenko <stepanm@codeaurora.org>
[abhimany: resolve trivial merge conflicts and add header file]
Signed-off-by: default avatarAbhimanyu Kapur <abhimany@codeaurora.org>
parent 9cdb0eec

drivers/soc/qcom/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -27,6 +27,14 @@ config MSM_MEMORY_DUMP_V2 
	  of deadlocks or cpu hangs these dump regions are captured to

	  give a snapshot of the system at the time of the crash.



config MSM_BOOT_STATS

	bool "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 MSM_WATCHDOG_V2

	bool "MSM Watchdog Support"

	help

drivers/soc/qcom/Makefile

+2 −0
Original line number Diff line number Diff line 
obj-$(CONFIG_ARM64) += cpu_ops.o

obj-$(CONFIG_MSM_BOOT_STATS) += boot_stats.o

obj-$(CONFIG_QCOM_GSBI)	+=	qcom_gsbi.o

obj-$(CONFIG_MSM_MEMORY_DUMP) += memory_dump.o

obj-$(CONFIG_MSM_MEMORY_DUMP_V2) += memory_dump_v2.o

drivers/soc/qcom/boot_stats.c

0 → 100644
+106 −0
Original line number Diff line number Diff line 
/* 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;

};



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)

{

	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);

}



int 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;

}

include/soc/qcom/boot_stats.h

0 → 100644
+17 −0
Original line number Diff line number Diff line 
/* 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.

 */



#ifdef CONFIG_MSM_BOOT_STATS

int boot_stats_init(void);

#else

static inline int boot_stats_init(void) { return 0; }

#endif