--- /dev/null
+/*
+ * Copyright (C) 2009 Motorola, Inc.
+ * Copyright (C) 2012 Motorola Mobility. 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 as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <asm/setup.h>
+#include <soc/samsung/bootinfo.h>
+#include <linux/seq_file.h>
+#include <linux/pstore.h>
+#include <linux/pstore_ram.h>
+
+#ifdef CONFIG_ARM64
+/* these are defined in kernel/setup.c for "arm" targets */
+unsigned int system_rev;
+EXPORT_SYMBOL(system_rev);
+
+unsigned int system_serial_low;
+EXPORT_SYMBOL(system_serial_low);
+
+unsigned int system_serial_high;
+EXPORT_SYMBOL(system_serial_high);
+#endif
+
+/*
+ * EMIT_BOOTINFO and EMIT_BOOTINFO_STR are used to emit the bootinfo
+ * information for data provided via DEVICE TREE.
+ *
+ * The format for all bootinfo lines is "name : val" and these macros
+ * enforce that format.
+ *
+ * strname is the name printed in the name/val pair.
+ * name is the name of the function to call
+ *
+ * EMIT_BOOTINFO and EMIT_BOOTINFO_STR depend on buf and len to already
+ * be defined.
+ */
+#define EMIT_BOOTINFO(strname, fmt, name) \
+ do { \
+ seq_printf(m, strname ": " fmt "\n", \
+ bi_##name()); \
+ } while (0)
+
+#define EMIT_BOOTINFO_STR(strname, strval) \
+ do { \
+ if (strlen(strval) == 0) { \
+ seq_printf(m, "%s: UNKNOWN\n", \
+ strname); \
+ } else { \
+ seq_printf(m, "%s: %s\n", \
+ strname, strval); \
+ } \
+ } while (0)
+
+#define EMIT_BOOTINFO_LASTKMSG(buf, strname, fmt, name) \
+ do { \
+ snprintf(buf, sizeof(buf), strname ": " fmt "\n", \
+ bi_##name()); \
+ pstore_annotate(buf); \
+ } while (0)
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * powerup_reason contains the powerup reason provided by the ATAGs when
+ * the machine boots.
+ *
+ * Exported symbols:
+ * bi_powerup_reason() -- returns the powerup reason
+ */
+
+#ifdef CONFIG_OF
+static void of_powerup(u32 *pwr)
+{
+ struct device_node *n = of_find_node_by_path("/chosen");
+
+ of_property_read_u32(n, "mmi,powerup_reason", pwr);
+ of_node_put(n);
+}
+#else
+static inline void of_powerup(u32 *pwr) { }
+#endif
+
+u32 bi_powerup_reason(void)
+{
+ u32 reason = PU_REASON_INVALID;
+
+ of_powerup(&reason);
+ return reason;
+}
+EXPORT_SYMBOL(bi_powerup_reason);
+
+#define EMIT_POWERUPREASON() \
+ EMIT_BOOTINFO("POWERUPREASON", "0x%08x", powerup_reason)
+
+
+/*
+ * mbm_version contains the MBM version.
+ * mbm_loader_version contains the MBM loader version.
+ * mbm_version and mbm_loader_version default to 0 if they are
+ * not set.
+ *
+ * Exported symbols:
+ * bi_mbm_version() -- returns the MBM version
+ */
+#ifdef CONFIG_OF
+static void of_mbmver(u32 *ver)
+{
+ struct device_node *n = of_find_node_by_path("/chosen");
+
+ of_property_read_u32(n, "mmi,mbmversion", ver);
+ of_node_put(n);
+}
+#else
+static inline void of_mbmver(u32 *ver) { }
+#endif
+
+u32 bi_mbm_version(void)
+{
+ u32 version = 0xFFFFFFFF;
+
+ of_mbmver(&version);
+ return version;
+}
+EXPORT_SYMBOL(bi_mbm_version);
+
+#define EMIT_MBM_VERSION() \
+ EMIT_BOOTINFO("MBM_VERSION", "0x%08x", mbm_version)
+
+/*
+ * boot_seq contains the boot sequence number.
+ * boot_seq default to 0 if it is not set.
+ *
+ * Exported symbols:
+ * bi_boot_seq() -- returns the boot seq
+ */
+#ifdef CONFIG_OF
+static void of_bootseq(u32 *seq)
+{
+ struct device_node *n = of_find_node_by_path("/chosen");
+
+ of_property_read_u32(n, "mmi,boot_seq", seq);
+ of_node_put(n);
+}
+#else
+static inline void of_boot_seq(u32 *seq) { }
+#endif
+
+u32 bi_boot_seq(void)
+{
+ u32 seq = 0x0;
+
+ of_bootseq(&seq);
+ return seq;
+}
+EXPORT_SYMBOL(bi_boot_seq);
+
+#define EMIT_BOOT_SEQ() \
+ EMIT_BOOTINFO("BOOT_SEQ", "0x%08x", boot_seq)
+
+/*
+ * BL build signature a succession of lines of text each denoting
+ * build/versioning information for each bootloader component,
+ * as passed along from bootloader via ATAG_BL_BUILD_SIG(s)
+ */
+
+#define MAX_BL_BUILD_SIG 16
+#define MAX_BLD_SIG_ITEM 20
+#define MAX_BLD_SIG_VALUE 80
+
+struct bl_build_sig {
+ char item[MAX_BLD_SIG_ITEM];
+ char value[MAX_BLD_SIG_VALUE];
+};
+
+static unsigned bl_build_sig_count;
+static struct bl_build_sig bl_build_sigs[MAX_BL_BUILD_SIG];
+
+static void convert_to_upper(char *str)
+{
+ while (*str) {
+ *str = toupper(*str);
+ str++;
+ }
+}
+
+void bi_add_bl_build_sig(char *bld_sig)
+{
+ int pos;
+ char *value;
+ char *ptr;
+
+ if (!bld_sig || (bl_build_sig_count >= MAX_BL_BUILD_SIG)) {
+ return;
+ }
+
+ value = (char *)memchr((void *)bld_sig, '=', MAX_BLD_SIG_ITEM);
+ if (!value) {
+ return;
+ }
+ pos = value - bld_sig;
+
+ ptr = bl_build_sigs[bl_build_sig_count].item;
+ strlcpy(ptr, bld_sig, pos+1);
+ convert_to_upper(ptr);
+
+ ptr = bl_build_sigs[bl_build_sig_count].value;
+ strlcpy(ptr, value+1, MAX_BLD_SIG_VALUE);
+
+ bl_build_sig_count++;
+
+ return;
+}
+EXPORT_SYMBOL(bi_add_bl_build_sig);
+
+#ifdef CONFIG_OF
+static void __init of_blsig(void)
+{
+ struct property *p;
+ struct device_node *n;
+
+ /* Only do this one time once we find the sigs */
+ if (bl_build_sig_count)
+ return;
+
+ n = of_find_node_by_path("/chosen/mmi,bl_sigs");
+ if (n == NULL)
+ return;
+
+ for_each_property_of_node(n, p)
+ if (strcmp(p->name, "name"))
+ bi_add_bl_build_sig(p->value);
+
+ of_node_put(n);
+}
+static void __init of_systemrev(void)
+{
+ struct device_node *n = of_find_node_by_path("/chosen");
+ if (n == NULL)
+ return;
+
+ of_property_read_u32(n, "linux,hwrev", &system_rev);
+ of_property_read_u32(n, "linux,seriallow", &system_serial_low);
+ of_property_read_u32(n, "linux,serialhigh", &system_serial_high);
+ of_node_put(n);
+}
+#else
+static inline void of_blsig(void) { }
+static inline void of_systemrev(void) { }
+#endif
+
+#define EMIT_BL_BUILD_SIG() \
+ do { \
+ int i; \
+ for (i = 0; i < bl_build_sig_count; i++) { \
+ EMIT_BOOTINFO_STR(bl_build_sigs[i].item, \
+ bl_build_sigs[i].value); \
+ } \
+ } while (0)
+
+/* System revision s global symbol exported by setup.c
+ * use wrapper to maintain coherent format with the other
+ * boot info elements
+ */
+
+static u32 bi_hwrev(void)
+{
+ return system_rev;
+}
+
+#define EMIT_HWREV() \
+ EMIT_BOOTINFO("HW_REV", "0x%04x", hwrev)
+
+/* Serial high and low are symbols exported by setup.c
+ * use wrapper to maintain coherent format with the other
+ * boot info elements
+ */
+
+static u64 bi_serial(void)
+{
+ return ((u64)system_serial_high << 32)
+ | (u64)system_serial_low;
+}
+
+#define EMIT_SERIAL() \
+ EMIT_BOOTINFO("SERIAL", "0x%llx", serial)
+
+#define BOOTREASON_MAX_LEN 64
+static char bootreason[BOOTREASON_MAX_LEN];
+int __init bootinfo_bootreason_init(char *s)
+{
+ strlcpy(bootreason, s, BOOTREASON_MAX_LEN);
+ return 1;
+}
+__setup("androidboot.bootreason=", bootinfo_bootreason_init);
+
+const char *bi_bootreason(void)
+{
+ return bootreason;
+}
+EXPORT_SYMBOL(bi_bootreason);
+
+static char bootmode[BOOTMODE_MAX_LEN];
+int __init bootinfo_bootmode_init(char *s)
+{
+ strlcpy(bootmode, s, BOOTMODE_MAX_LEN);
+ return 1;
+}
+__setup("androidboot.mode=", bootinfo_bootmode_init);
+
+const char *bi_bootmode(void)
+{
+ return bootmode;
+}
+EXPORT_SYMBOL(bi_bootmode);
+
+static void bootinfo_lastkmsg_annotate_bl(struct bl_build_sig *bl)
+{
+ int i;
+ char buf[BOOTREASON_MAX_LEN];
+ for (i = 0; i < bl_build_sig_count; i++) {
+ bl[i].item[MAX_BLD_SIG_ITEM - 1] = 0;
+ bl[i].value[MAX_BLD_SIG_VALUE - 1] = 0;
+ pstore_annotate(bl[i].item);
+ pstore_annotate("=");
+ pstore_annotate(bl[i].value);
+ pstore_annotate("\n");
+ }
+
+ EMIT_BOOTINFO_LASTKMSG(buf, "MBM_VERSION", "0x%08x", mbm_version);
+ pstore_annotate(linux_banner);
+ EMIT_BOOTINFO_LASTKMSG(buf, "SERIAL", "0x%llx", serial);
+ EMIT_BOOTINFO_LASTKMSG(buf, "HW_REV", "0x%04x", hwrev);
+ EMIT_BOOTINFO_LASTKMSG(buf, "BOOT_SEQ", "0x%08x", boot_seq);
+ persistent_ram_annotation_append("POWERUPREASON: 0x%08x\n",
+ bi_powerup_reason());
+ persistent_ram_annotation_append("\nBoot info:\n");
+ persistent_ram_annotation_append("Last boot reason: %s\n", bootreason);
+}
+
+/* get_bootinfo fills in the /proc/bootinfo information.
+ * We currently only have the powerup reason, mbm_version, serial
+ * and hwrevision.
+ */
+
+static int get_bootinfo(struct seq_file *m, void *v)
+{
+ int len = 0;
+
+ EMIT_SERIAL();
+ EMIT_HWREV();
+ EMIT_POWERUPREASON();
+ EMIT_MBM_VERSION();
+ EMIT_BL_BUILD_SIG();
+ EMIT_BOOT_SEQ();
+ EMIT_BOOTINFO("Last boot reason", "%s", bootreason);
+
+ return len;
+}
+
+static struct proc_dir_entry *proc_bootinfo;
+
+static int bootinfo_proc_open(struct inode *inode, struct file *file) {
+ return single_open(file, get_bootinfo, PDE_DATA(inode));
+}
+
+static const struct file_operations bootinfo_proc_fops = {
+ .open = bootinfo_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+int __init bootinfo_init_module(void)
+{
+ of_blsig();
+ of_systemrev();
+ proc_bootinfo = &proc_root;
+ if (!proc_create_data("bootinfo", 0, NULL, &bootinfo_proc_fops, NULL))
+ printk(KERN_ERR "Failed to create bootinfo entry");
+ bootinfo_lastkmsg_annotate_bl(bl_build_sigs);
+ return 0;
+}
+
+void __exit bootinfo_cleanup_module(void)
+{
+ if (proc_bootinfo) {
+ remove_proc_entry("bootinfo", proc_bootinfo);
+ proc_bootinfo = NULL;
+ }
+}
+
+module_init(bootinfo_init_module);
+module_exit(bootinfo_cleanup_module);
+
+MODULE_AUTHOR("MOTOROLA");
--- /dev/null
+/*
+ * linux/include/asm/bootinfo.h: Include file for boot information
+ * provided on Motorola phones
+ *
+ * Copyright (C) 2009 Motorola, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Date Author Comment
+ * 01/07/2009 Motorola Initial version
+ */
+
+#ifndef __ASMARM_BOOTINFO_H
+#define __ASMARM_BOOTINFO_H
+
+
+/*
+ * These #defines are used for the bits in powerup_reason.
+ */
+#define PU_REASON_USB_CABLE 0x00000010 /* Bit 4 */
+#define PU_REASON_FACTORY_CABLE 0x00000020 /* Bit 5 */
+#define PU_REASON_PWR_KEY_PRESS 0x00000080 /* Bit 7 */
+#define PU_REASON_CHARGER 0x00000100 /* Bit 8 */
+#define PU_REASON_POWER_CUT 0x00000200 /* bit 9 */
+#define PU_REASON_SW_AP_RESET 0x00004000 /* Bit 14 */
+#define PU_REASON_WDOG_AP_RESET 0x00008000 /* Bit 15 */
+#define PU_REASON_AP_KERNEL_PANIC 0x00020000 /* Bit 17 */
+#define PU_REASON_MODEM_RESET 0x80000000 /* Bit 31 */
+#define PU_REASON_INVALID 0xFFFFFFFF
+
+
+#if !defined(__KERNEL__) || defined(CONFIG_BOOTINFO)
+
+/*
+ * These #defines are used for the battery status at boot.
+ * When no battery is present, the status is BATTERY_LO_VOLTAGE.
+ */
+#define BATTERY_GOOD_VOLTAGE 1
+#define BATTERY_LO_VOLTAGE 2
+#define BATTERY_UNKNOWN (-1)
+
+/*
+ * /proc/bootinfo has a strict format. Each line contains a name/value
+ * pair which are separated with a colon and a single space on both
+ * sides of the colon. The following defines help you size the
+ * buffers used to read the data from /proc/bootinfo.
+ *
+ * BOOTINFO_MAX_NAME_LEN: maximum size in bytes of a name in the
+ * bootinfo line. Don't forget to add space
+ * for the NUL if you need it.
+ * BOOTINFO_MAX_VAL_LEN: maximum size in bytes of a value in the
+ * bootinfo line. Don't forget to add space
+ * for the NUL if you need it.
+ * BOOTINFO_BUF_SIZE: size in bytes of buffer that is large enough
+ * to read a /proc/bootinfo line. The extra
+ * 3 is for the " : ". Don't forget to add
+ * space for the NUL and newline if you
+ * need them.
+ */
+#define BOOTINFO_MAX_NAME_LEN 32
+#define BOOTINFO_MAX_VAL_LEN 128
+#define BOOTINFO_BUF_SIZE (BOOTINFO_MAX_NAME_LEN + \
+ 3 + BOOTINFO_MAX_VAL_LEN)
+
+#endif
+
+
+#if defined(__KERNEL__)
+#if defined(CONFIG_BOOTINFO)
+
+extern struct proc_dir_entry proc_root;
+
+u32 bi_powerup_reason(void);
+const char *bi_bootreason(void);
+u32 bi_mbm_version(void);
+#define BOOTMODE_MAX_LEN 64
+const char *bi_bootmode(void);
+
+void bi_add_bl_build_sig(char *bld_sig);
+
+#ifdef CONFIG_ARM64
+extern unsigned int system_rev;
+extern unsigned int system_serial_low;
+extern unsigned int system_serial_high;
+#else
+#include <asm/system_info.h>
+#endif
+
+#else /* defined(CONFIG_BOOTINFO) */
+static inline u32 bi_powerup_reason(void) { return PU_REASON_INVALID; }
+static inline const char *bi_bootreason(void) { return "NOTSUPPORTED"; }
+static inline const char *bi_bootmode(void) { return "NOTSUPPORTED"; }
+static inline u32 bi_mbm_version(void) { return 0xFFFFFFFF; }
+#endif /* !defined(CONFIG_BOOTINFO) */
+#endif /* defined(__KERNEL__) */
+
+#endif
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff