/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (c) 2012 The Chromium OS Authors.
 * (C) Copyright 2002-2010
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 */

#ifndef __ASM_GENERIC_GBL_DATA_H
#define __ASM_GENERIC_GBL_DATA_H
/*
 * The following data structure is placed in some memory which is
 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
 * some locked parts of the data cache) to allow for a minimum set of
 * global variables during system initialization (until we have set
 * up the memory controller so that we can use RAM).
 *
 * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
 *
 * Each architecture has its own private fields. For now all are private
 */

#ifndef __ASSEMBLY__
#include <fdtdec.h>
#include <membuff.h>
#include <linux/list.h>
#include <linux/build_bug.h>
#include <asm-offsets.h>

struct acpi_ctx;
struct driver_rt;

typedef struct global_data gd_t;

/**
 * struct global_data - global data structure
 */
struct global_data {
        /**
         * @bd: board information
         */
        struct bd_info *bd;
        /**
         * @flags: global data flags
         *
         * See &enum gd_flags
         */
        unsigned long flags;
        /**
         * @baudrate: baud rate of the serial interface
         */
        unsigned int baudrate;
        /**
         * @cpu_clk: CPU clock rate in Hz
         */
        unsigned long cpu_clk;
        /**
         * @bus_clk: platform clock rate in Hz
         */
        unsigned long bus_clk;
        /**
         * @pci_clk: PCI clock rate in Hz
         */
        /* We cannot bracket this with CONFIG_PCI due to mpc5xxx */
        unsigned long pci_clk;
        /**
         * @mem_clk: memory clock rate in Hz
         */
        unsigned long mem_clk;
#if defined(CONFIG_LCD) || defined(CONFIG_VIDEO) || defined(CONFIG_DM_VIDEO)
        /**
         * @fb_base: base address of frame buffer memory
         */
        unsigned long fb_base;
#endif
#if defined(CONFIG_POST)
        /**
         * @post_log_word: active POST tests
         *
         * @post_log_word is a bit mask defining which POST tests are recorded
         * (see constants POST_*).
         */
        unsigned long post_log_word;
        /**
         * @post_log_res: POST results
         *
         * @post_log_res is a bit mask with the POST results. A bit with value 1
         * indicates successful execution.
         */
        unsigned long post_log_res;
        /**
         * @post_init_f_time: time in ms when post_init_f() started
         */
        unsigned long post_init_f_time;
#endif
#ifdef CONFIG_BOARD_TYPES
        /**
         * @board_type: board type
         *
         * If a U-Boot configuration supports multiple board types, the actual
         * board type may be stored in this field.
         */
        unsigned long board_type;
#endif
        /**
         * @have_console: console is available
         *
         * A value of 1 indicates that serial_init() was called and a console
         * is available.
         * A value of 0 indicates that console input and output drivers shall
         * not be called.
         */
        unsigned long have_console;
#if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
        /**
         * @precon_buf_idx: pre-console buffer index
         *
         * @precon_buf_idx indicates the current position of the buffer used to
         * collect output before the console becomes available
         */
        unsigned long precon_buf_idx;
#endif
        /**
         * @env_addr: address of environment structure
         *
         * @env_addr contains the address of the structure holding the
         * environment variables.
         */
        unsigned long env_addr;
        /**
         * @env_valid: environment is valid
         *
         * See &enum env_valid
         */
        unsigned long env_valid;
        /**
         * @env_has_init: bit mask indicating environment locations
         *
         * &enum env_location defines which bit relates to which location
         */
        unsigned long env_has_init;
        /**
         * @env_load_prio: priority of the loaded environment
         */
        int env_load_prio;
        /**
         * @ram_base: base address of RAM used by U-Boot
         */
        unsigned long ram_base;
        /**
         * @ram_top: top address of RAM used by U-Boot
         */
        phys_addr_t ram_top;
        /**
         * @relocaddr: start address of U-Boot in RAM
         *
         * After relocation this field indicates the address to which U-Boot
         * has been relocated. It can be displayed using the bdinfo command.
         * Its value is needed to display the source code when debugging with
         * GDB using the 'add-symbol-file u-boot <relocaddr>' command.
         */
        unsigned long relocaddr;
        /**
         * @ram_size: RAM size in bytes
         */
        phys_size_t ram_size;
        /**
         * @mon_len: monitor length in bytes
         */
        unsigned long mon_len;
        /**
         * @irq_sp: IRQ stack pointer
         */
        unsigned long irq_sp;
        /**
         * @start_addr_sp: initial stack pointer address
         */
        unsigned long start_addr_sp;
        /**
         * @reloc_off: relocation offset
         */
        unsigned long reloc_off;
        /**
         * @new_gd: pointer to relocated global data
         */
        struct global_data *new_gd;

#ifdef CONFIG_DM
        /**
         * @dm_root: root instance for Driver Model
         */
        struct udevice *dm_root;
        /**
         * @dm_root_f: pre-relocation root instance
         */
        struct udevice *dm_root_f;
        /**
         * @uclass_root_s:
         * head of core tree when uclasses are not in read-only memory.
         *
         * When uclasses are in read-only memory, @uclass_root_s is not used and
         * @uclass_root points to the root node generated by dtoc.
         */
        struct list_head uclass_root_s;
        /**
         * @uclass_root:
         * pointer to head of core tree, if uclasses are in read-only memory and
         * cannot be adjusted to use @uclass_root as a list head.
         *
         * When not in read-only memory, @uclass_root_s is used to hold the
         * uclass root, and @uclass_root points to the address of
         * @uclass_root_s.
         */
        struct list_head *uclass_root;
# if CONFIG_IS_ENABLED(OF_PLATDATA_DRIVER_RT)
        /** @dm_driver_rt: Dynamic info about the driver */
        struct driver_rt *dm_driver_rt;
# endif
#if CONFIG_IS_ENABLED(OF_PLATDATA_RT)
        /** @dm_udevice_rt: Dynamic info about the udevice */
        struct udevice_rt *dm_udevice_rt;
        /**
         * @dm_priv_base: Base address of the priv/plat region used when
         * udevices and uclasses are in read-only memory. This is NULL if not
         * used
         */
        void *dm_priv_base;
# endif
#endif
#ifdef CONFIG_TIMER
        /**
         * @timer: timer instance for Driver Model
         */
        struct udevice *timer;
#endif
        /**
         * @fdt_blob: U-Boot's own device tree, NULL if none
         */
        const void *fdt_blob;
        /**
         * @new_fdt: relocated device tree
         */
        void *new_fdt;
        /**
         * @fdt_size: space reserved for relocated device space
         */
        unsigned long fdt_size;
#if CONFIG_IS_ENABLED(OF_LIVE)
        /**
         * @of_root: root node of the live tree
         */
        struct device_node *of_root;
#endif

#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
        /**
         * @multi_dtb_fit: pointer to uncompressed multi-dtb FIT image
         */
        const void *multi_dtb_fit;
#endif
        /**
         * @jt: jump table
         *
         * The jump table contains pointers to exported functions. A pointer to
         * the jump table is passed to standalone applications.
         */
        struct jt_funcs *jt;
        /**
         * @env_buf: buffer for env_get() before reloc
         */
        char env_buf[32];
#ifdef CONFIG_TRACE
        /**
         * @trace_buff: trace buffer
         *
         * When tracing function in U-Boot this field points to the buffer
         * recording the function calls.
         */
        void *trace_buff;
#endif
#if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
        /**
         * @cur_i2c_bus: currently used I2C bus
         */
        int cur_i2c_bus;
#endif
        /**
         * @timebase_h: high 32 bits of timer
         */
        unsigned int timebase_h;
        /**
         * @timebase_l: low 32 bits of timer
         */
        unsigned int timebase_l;
#if CONFIG_VAL(SYS_MALLOC_F_LEN)
        /**
         * @malloc_base: base address of early malloc()
         */
        unsigned long malloc_base;
        /**
         * @malloc_limit: limit address of early malloc()
         */
        unsigned long malloc_limit;
        /**
         * @malloc_ptr: current address of early malloc()
         */
        unsigned long malloc_ptr;
#endif
#ifdef CONFIG_PCI
        /**
         * @hose: PCI hose for early use
         */
        struct pci_controller *hose;
        /**
         * @pci_ram_top: top of region accessible to PCI
         */
        phys_addr_t pci_ram_top;
#endif
#ifdef CONFIG_PCI_BOOTDELAY
        /**
         * @pcidelay_done: delay time before scanning of PIC hose expired
         *
         * If CONFIG_PCI_BOOTDELAY=y, pci_hose_scan() waits for the number of
         * milliseconds defined by environment variable pcidelay before
         * scanning. Once this delay has expired the flag @pcidelay_done
         * is set to 1.
         */
        int pcidelay_done;
#endif
        /**
         * @cur_serial_dev: current serial device
         */
        struct udevice *cur_serial_dev;
        /**
         * @arch: architecture-specific data
         */
        struct arch_global_data arch;
#ifdef CONFIG_CONSOLE_RECORD
        /**
         * @console_out: output buffer for console recording
         *
         * This buffer is used to collect output during console recording.
         */
        struct membuff console_out;
        /**
         * @console_in: input buffer for console recording
         *
         * If console recording is activated, this buffer can be used to
         * emulate input.
         */
        struct membuff console_in;
#endif
#ifdef CONFIG_DM_VIDEO
        /**
         * @video_top: top of video frame buffer area
         */
        ulong video_top;
        /**
         * @video_bottom: bottom of video frame buffer area
         */
        ulong video_bottom;
#endif
#ifdef CONFIG_BOOTSTAGE
        /**
         * @bootstage: boot stage information
         */
        struct bootstage_data *bootstage;
        /**
         * @new_bootstage: relocated boot stage information
         */
        struct bootstage_data *new_bootstage;
#endif
#ifdef CONFIG_LOG
        /**
         * @log_drop_count: number of dropped log messages
         *
         * This counter is incremented for each log message which can not
         * be processed because logging is not yet available as signaled by
         * flag %GD_FLG_LOG_READY in @flags.
         */
        int log_drop_count;
        /**
         * @default_log_level: default logging level
         *
         * For logging devices without filters @default_log_level defines the
         * logging level, cf. &enum log_level_t.
         */
        int default_log_level;
        /**
         * @log_head: list of logging devices
         */
        struct list_head log_head;
        /**
         * @log_fmt: bit mask for logging format
         *
         * The @log_fmt bit mask selects the fields to be shown in log messages.
         * &enum log_fmt defines the bits of the bit mask.
         */
        int log_fmt;

        /**
         * @processing_msg: a log message is being processed
         *
         * This flag is used to suppress the creation of additional messages
         * while another message is being processed.
         */
        bool processing_msg;
        /**
         * @logc_prev: logging category of previous message
         *
         * This value is used as logging category for continuation messages.
         */
        int logc_prev;
        /**
         * @logl_prev: logging level of the previous message
         *
         * This value is used as logging level for continuation messages.
         */
        int logl_prev;
        /**
         * @log_cont: Previous log line did not finished wtih \n
         *
         * This allows for chained log messages on the same line
         */
        bool log_cont;
#endif
#if CONFIG_IS_ENABLED(BLOBLIST)
        /**
         * @bloblist: blob list information
         */
        struct bloblist_hdr *bloblist;
        /**
         * @new_bloblist: relocated blob list information
         */
        struct bloblist_hdr *new_bloblist;
#endif
#if CONFIG_IS_ENABLED(HANDOFF)
        /**
         * @spl_handoff: SPL hand-off information
         */
        struct spl_handoff *spl_handoff;
#endif
#if defined(CONFIG_TRANSLATION_OFFSET)
        /**
         * @translation_offset: optional translation offset
         *
         * See CONFIG_TRANSLATION_OFFSET.
         */
        fdt_addr_t translation_offset;
#endif
#ifdef CONFIG_GENERATE_ACPI_TABLE
        /**
         * @acpi_ctx: ACPI context pointer
         */
        struct acpi_ctx *acpi_ctx;
#endif
#if CONFIG_IS_ENABLED(GENERATE_SMBIOS_TABLE)
        /**
         * @smbios_version: Points to SMBIOS type 0 version
         */
        char *smbios_version;
#endif
};
#ifndef DO_DEPS_ONLY
static_assert(sizeof(struct global_data) == GD_SIZE);
#endif

/**
 * gd_board_type() - retrieve board type
 *
 * Return: global board type
 */
#ifdef CONFIG_BOARD_TYPES
#define gd_board_type()         gd->board_type
#else
#define gd_board_type()         0
#endif

/* These macros help avoid #ifdefs in the code */
#if CONFIG_IS_ENABLED(OF_LIVE)
#define gd_of_root()            gd->of_root
#define gd_of_root_ptr()        &gd->of_root
#define gd_set_of_root(_root)   gd->of_root = (_root)
#else
#define gd_of_root()            NULL
#define gd_of_root_ptr()        NULL
#define gd_set_of_root(_root)
#endif

#if CONFIG_IS_ENABLED(OF_PLATDATA_DRIVER_RT)
#define gd_set_dm_driver_rt(dyn)        gd->dm_driver_rt = dyn
#define gd_dm_driver_rt()               gd->dm_driver_rt
#else
#define gd_set_dm_driver_rt(dyn)
#define gd_dm_driver_rt()               NULL
#endif

#if CONFIG_IS_ENABLED(OF_PLATDATA_RT)
#define gd_set_dm_udevice_rt(dyn)       gd->dm_udevice_rt = dyn
#define gd_dm_udevice_rt()              gd->dm_udevice_rt
#define gd_set_dm_priv_base(dyn)        gd->dm_priv_base = dyn
#define gd_dm_priv_base()               gd->dm_priv_base
#else
#define gd_set_dm_udevice_rt(dyn)
#define gd_dm_udevice_rt()              NULL
#define gd_set_dm_priv_base(dyn)
#define gd_dm_priv_base()               NULL
#endif

#ifdef CONFIG_GENERATE_ACPI_TABLE
#define gd_acpi_ctx()           gd->acpi_ctx
#else
#define gd_acpi_ctx()           NULL
#endif

/**
 * enum gd_flags - global data flags
 *
 * See field flags of &struct global_data.
 */
enum gd_flags {
        /**
         * @GD_FLG_RELOC: code was relocated to RAM
         */
        GD_FLG_RELOC = 0x00001,
        /**
         * @GD_FLG_DEVINIT: devices have been initialized
         */
        GD_FLG_DEVINIT = 0x00002,
        /**
         * @GD_FLG_SILENT: silent mode
         */
        GD_FLG_SILENT = 0x00004,
        /**
         * @GD_FLG_POSTFAIL: critical POST test failed
         */
        GD_FLG_POSTFAIL = 0x00008,
        /**
         * @GD_FLG_POSTSTOP: POST sequence aborted
         */
        GD_FLG_POSTSTOP = 0x00010,
        /**
         * @GD_FLG_LOGINIT: log Buffer has been initialized
         */
        GD_FLG_LOGINIT = 0x00020,
        /**
         * @GD_FLG_DISABLE_CONSOLE: disable console (in & out)
         */
        GD_FLG_DISABLE_CONSOLE = 0x00040,
        /**
         * @GD_FLG_ENV_READY: environment imported into hash table
         */
        GD_FLG_ENV_READY = 0x00080,
        /**
         * @GD_FLG_SERIAL_READY: pre-relocation serial console ready
         */
        GD_FLG_SERIAL_READY = 0x00100,
        /**
         * @GD_FLG_FULL_MALLOC_INIT: full malloc() is ready
         */
        GD_FLG_FULL_MALLOC_INIT = 0x00200,
        /**
         * @GD_FLG_SPL_INIT: spl_init() has been called
         */
        GD_FLG_SPL_INIT = 0x00400,
        /**
         * @GD_FLG_SKIP_RELOC: don't relocate
         */
        GD_FLG_SKIP_RELOC = 0x00800,
        /**
         * @GD_FLG_RECORD: record console
         */
        GD_FLG_RECORD = 0x01000,
        /**
         * @GD_FLG_RECORD_OVF: record console overflow
         */
        GD_FLG_RECORD_OVF = 0x02000,
        /**
         * @GD_FLG_ENV_DEFAULT: default variable flag
         */
        GD_FLG_ENV_DEFAULT = 0x04000,
        /**
         * @GD_FLG_SPL_EARLY_INIT: early SPL initialization is done
         */
        GD_FLG_SPL_EARLY_INIT = 0x08000,
        /**
         * @GD_FLG_LOG_READY: log system is ready for use
         */
        GD_FLG_LOG_READY = 0x10000,
        /**
         * @GD_FLG_WDT_READY: watchdog is ready for use
         */
        GD_FLG_WDT_READY = 0x20000,
        /**
         * @GD_FLG_SKIP_LL_INIT: don't perform low-level initialization
         */
        GD_FLG_SKIP_LL_INIT = 0x40000,
        /**
         * @GD_FLG_SMP_READY: SMP initialization is complete
         */
        GD_FLG_SMP_READY = 0x80000,
};

#endif /* __ASSEMBLY__ */

#endif /* __ASM_GENERIC_GBL_DATA_H */