mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
15a23b6f16
On x86 devices we use CAR (Cache-As-RAM) to hold the malloc() region in SPL, since SDRAM is not set up yet. This means that driver model stores its tables in this region. When preparing to jump from SPL to U-Boot proper, we must disable CAR, so that the CPU can uses the caches normally. This means that driver model tables become inaccessible. From there until we jump to U-Boot proper, we must avoid using driver model. This is only a problem on boards which operate this way, for example chromebook_link64 Add a flag to indicate that driver model is dead and should not be used. It can be used in SPL to avoid hanging the machine. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
686 lines
16 KiB
C
686 lines
16 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2012 The Chromium OS Authors.
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* (C) Copyright 2002-2010
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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#ifndef __ASM_GENERIC_GBL_DATA_H
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#define __ASM_GENERIC_GBL_DATA_H
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/*
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* The following data structure is placed in some memory which is
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* available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
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* some locked parts of the data cache) to allow for a minimum set of
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* global variables during system initialization (until we have set
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* up the memory controller so that we can use RAM).
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*
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* Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
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*
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* Each architecture has its own private fields. For now all are private
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*/
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#ifndef __ASSEMBLY__
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#include <cyclic.h>
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#include <event_internal.h>
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#include <fdtdec.h>
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#include <membuff.h>
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#include <linux/list.h>
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#include <linux/build_bug.h>
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#include <asm-offsets.h>
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struct acpi_ctx;
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struct driver_rt;
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typedef struct global_data gd_t;
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/**
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* struct global_data - global data structure
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*/
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struct global_data {
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/**
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* @bd: board information
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*/
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struct bd_info *bd;
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/**
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* @flags: global data flags
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*
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* See &enum gd_flags
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*/
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unsigned long flags;
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/**
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* @baudrate: baud rate of the serial interface
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*/
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unsigned int baudrate;
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/**
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* @cpu_clk: CPU clock rate in Hz
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*/
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unsigned long cpu_clk;
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/**
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* @bus_clk: platform clock rate in Hz
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*/
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unsigned long bus_clk;
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/**
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* @pci_clk: PCI clock rate in Hz
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*/
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/* We cannot bracket this with CONFIG_PCI due to mpc5xxx */
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unsigned long pci_clk;
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/**
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* @mem_clk: memory clock rate in Hz
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*/
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unsigned long mem_clk;
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#if CONFIG_IS_ENABLED(VIDEO)
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/**
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* @fb_base: base address of frame buffer memory
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*/
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unsigned long fb_base;
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#endif
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#if defined(CONFIG_POST)
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/**
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* @post_log_word: active POST tests
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*
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* @post_log_word is a bit mask defining which POST tests are recorded
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* (see constants POST_*).
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*/
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unsigned long post_log_word;
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/**
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* @post_log_res: POST results
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*
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* @post_log_res is a bit mask with the POST results. A bit with value 1
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* indicates successful execution.
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*/
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unsigned long post_log_res;
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/**
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* @post_init_f_time: time in ms when post_init_f() started
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*/
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unsigned long post_init_f_time;
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#endif
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#ifdef CONFIG_BOARD_TYPES
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/**
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* @board_type: board type
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*
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* If a U-Boot configuration supports multiple board types, the actual
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* board type may be stored in this field.
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*/
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unsigned long board_type;
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#endif
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/**
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* @have_console: console is available
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*
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* A value of 1 indicates that serial_init() was called and a console
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* is available.
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* A value of 0 indicates that console input and output drivers shall
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* not be called.
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*/
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unsigned long have_console;
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#if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
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/**
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* @precon_buf_idx: pre-console buffer index
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*
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* @precon_buf_idx indicates the current position of the
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* buffer used to collect output before the console becomes
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* available. When negative, the pre-console buffer is
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* temporarily disabled (used when the pre-console buffer is
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* being written out, to prevent adding its contents to
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* itself).
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*/
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long precon_buf_idx;
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#endif
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/**
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* @env_addr: address of environment structure
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*
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* @env_addr contains the address of the structure holding the
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* environment variables.
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*/
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unsigned long env_addr;
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/**
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* @env_valid: environment is valid
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*
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* See &enum env_valid
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*/
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unsigned long env_valid;
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/**
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* @env_has_init: bit mask indicating environment locations
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*
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* &enum env_location defines which bit relates to which location
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*/
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unsigned long env_has_init;
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/**
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* @env_load_prio: priority of the loaded environment
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*/
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int env_load_prio;
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/**
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* @ram_base: base address of RAM used by U-Boot
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*/
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unsigned long ram_base;
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/**
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* @ram_top: top address of RAM used by U-Boot
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*/
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phys_addr_t ram_top;
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/**
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* @relocaddr: start address of U-Boot in RAM
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*
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* After relocation this field indicates the address to which U-Boot
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* has been relocated. It can be displayed using the bdinfo command.
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* Its value is needed to display the source code when debugging with
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* GDB using the 'add-symbol-file u-boot <relocaddr>' command.
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*/
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unsigned long relocaddr;
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/**
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* @ram_size: RAM size in bytes
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*/
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phys_size_t ram_size;
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/**
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* @mon_len: monitor length in bytes
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*/
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unsigned long mon_len;
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/**
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* @irq_sp: IRQ stack pointer
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*/
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unsigned long irq_sp;
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/**
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* @start_addr_sp: initial stack pointer address
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*/
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unsigned long start_addr_sp;
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/**
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* @reloc_off: relocation offset
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*/
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unsigned long reloc_off;
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/**
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* @new_gd: pointer to relocated global data
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*/
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struct global_data *new_gd;
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#ifdef CONFIG_DM
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/**
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* @dm_root: root instance for Driver Model
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*/
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struct udevice *dm_root;
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/**
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* @dm_root_f: pre-relocation root instance
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*/
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struct udevice *dm_root_f;
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/**
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* @uclass_root_s:
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* head of core tree when uclasses are not in read-only memory.
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*
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* When uclasses are in read-only memory, @uclass_root_s is not used and
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* @uclass_root points to the root node generated by dtoc.
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*/
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struct list_head uclass_root_s;
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/**
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* @uclass_root:
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* pointer to head of core tree, if uclasses are in read-only memory and
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* cannot be adjusted to use @uclass_root as a list head.
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*
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* When not in read-only memory, @uclass_root_s is used to hold the
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* uclass root, and @uclass_root points to the address of
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* @uclass_root_s.
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*/
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struct list_head *uclass_root;
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# if CONFIG_IS_ENABLED(OF_PLATDATA_DRIVER_RT)
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/** @dm_driver_rt: Dynamic info about the driver */
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struct driver_rt *dm_driver_rt;
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# endif
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#if CONFIG_IS_ENABLED(OF_PLATDATA_RT)
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/** @dm_udevice_rt: Dynamic info about the udevice */
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struct udevice_rt *dm_udevice_rt;
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/**
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* @dm_priv_base: Base address of the priv/plat region used when
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* udevices and uclasses are in read-only memory. This is NULL if not
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* used
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*/
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void *dm_priv_base;
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# endif
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#endif
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#ifdef CONFIG_TIMER
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/**
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* @timer: timer instance for Driver Model
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*/
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struct udevice *timer;
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#endif
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/**
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* @fdt_blob: U-Boot's own device tree, NULL if none
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*/
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const void *fdt_blob;
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/**
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* @new_fdt: relocated device tree
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*/
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void *new_fdt;
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/**
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* @fdt_size: space reserved for relocated device space
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*/
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unsigned long fdt_size;
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/**
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* @fdt_src: Source of FDT
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*/
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enum fdt_source_t fdt_src;
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#if CONFIG_IS_ENABLED(OF_LIVE)
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/**
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* @of_root: root node of the live tree
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*/
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struct device_node *of_root;
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#endif
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#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
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/**
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* @multi_dtb_fit: pointer to uncompressed multi-dtb FIT image
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*/
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const void *multi_dtb_fit;
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#endif
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/**
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* @jt: jump table
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*
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* The jump table contains pointers to exported functions. A pointer to
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* the jump table is passed to standalone applications.
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*/
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struct jt_funcs *jt;
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/**
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* @env_buf: buffer for env_get() before reloc
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*/
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char env_buf[32];
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#ifdef CONFIG_TRACE
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/**
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* @trace_buff: trace buffer
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*
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* When tracing function in U-Boot this field points to the buffer
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* recording the function calls.
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*/
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void *trace_buff;
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#endif
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#if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
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/**
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* @cur_i2c_bus: currently used I2C bus
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*/
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int cur_i2c_bus;
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#endif
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/**
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* @timebase_h: high 32 bits of timer
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*/
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unsigned int timebase_h;
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/**
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* @timebase_l: low 32 bits of timer
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*/
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unsigned int timebase_l;
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/**
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* @malloc_start: start of malloc() region
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*/
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#if CONFIG_IS_ENABLED(CMD_BDINFO_EXTRA)
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unsigned long malloc_start;
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#endif
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#if CONFIG_VAL(SYS_MALLOC_F_LEN)
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/**
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* @malloc_base: base address of early malloc()
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*/
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unsigned long malloc_base;
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/**
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* @malloc_limit: limit address of early malloc()
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*/
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unsigned long malloc_limit;
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/**
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* @malloc_ptr: current address of early malloc()
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*/
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unsigned long malloc_ptr;
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#endif
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#ifdef CONFIG_PCI
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/**
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* @hose: PCI hose for early use
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*/
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struct pci_controller *hose;
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/**
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* @pci_ram_top: top of region accessible to PCI
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*/
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phys_addr_t pci_ram_top;
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#endif
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#ifdef CONFIG_PCI_BOOTDELAY
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/**
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* @pcidelay_done: delay time before scanning of PIC hose expired
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*
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* If CONFIG_PCI_BOOTDELAY=y, pci_hose_scan() waits for the number of
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* milliseconds defined by environment variable pcidelay before
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* scanning. Once this delay has expired the flag @pcidelay_done
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* is set to 1.
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*/
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int pcidelay_done;
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#endif
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/**
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* @cur_serial_dev: current serial device
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*/
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struct udevice *cur_serial_dev;
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/**
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* @arch: architecture-specific data
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*/
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struct arch_global_data arch;
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#ifdef CONFIG_CONSOLE_RECORD
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/**
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* @console_out: output buffer for console recording
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*
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* This buffer is used to collect output during console recording.
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*/
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struct membuff console_out;
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/**
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* @console_in: input buffer for console recording
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*
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* If console recording is activated, this buffer can be used to
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* emulate input.
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*/
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struct membuff console_in;
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#endif
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#if CONFIG_IS_ENABLED(VIDEO)
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/**
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* @video_top: top of video frame buffer area
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*/
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ulong video_top;
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/**
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* @video_bottom: bottom of video frame buffer area
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*/
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ulong video_bottom;
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#endif
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#ifdef CONFIG_BOOTSTAGE
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/**
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* @bootstage: boot stage information
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*/
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struct bootstage_data *bootstage;
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/**
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* @new_bootstage: relocated boot stage information
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*/
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struct bootstage_data *new_bootstage;
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#endif
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#ifdef CONFIG_LOG
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/**
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* @log_drop_count: number of dropped log messages
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*
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* This counter is incremented for each log message which can not
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* be processed because logging is not yet available as signaled by
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* flag %GD_FLG_LOG_READY in @flags.
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*/
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int log_drop_count;
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/**
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* @default_log_level: default logging level
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*
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* For logging devices without filters @default_log_level defines the
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* logging level, cf. &enum log_level_t.
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*/
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int default_log_level;
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/**
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* @log_head: list of logging devices
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*/
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struct list_head log_head;
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/**
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* @log_fmt: bit mask for logging format
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*
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* The @log_fmt bit mask selects the fields to be shown in log messages.
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* &enum log_fmt defines the bits of the bit mask.
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*/
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int log_fmt;
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/**
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* @processing_msg: a log message is being processed
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*
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* This flag is used to suppress the creation of additional messages
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* while another message is being processed.
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*/
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bool processing_msg;
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/**
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* @logc_prev: logging category of previous message
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*
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* This value is used as logging category for continuation messages.
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*/
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int logc_prev;
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/**
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* @logl_prev: logging level of the previous message
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*
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* This value is used as logging level for continuation messages.
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*/
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int logl_prev;
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/**
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* @log_cont: Previous log line did not finished wtih \n
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*
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* This allows for chained log messages on the same line
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*/
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bool log_cont;
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#endif
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#if CONFIG_IS_ENABLED(BLOBLIST)
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/**
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* @bloblist: blob list information
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*/
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struct bloblist_hdr *bloblist;
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/**
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* @new_bloblist: relocated blob list information
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*/
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struct bloblist_hdr *new_bloblist;
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#endif
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#if CONFIG_IS_ENABLED(HANDOFF)
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/**
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* @spl_handoff: SPL hand-off information
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*/
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struct spl_handoff *spl_handoff;
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#endif
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#if defined(CONFIG_TRANSLATION_OFFSET)
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/**
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* @translation_offset: optional translation offset
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*
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* See CONFIG_TRANSLATION_OFFSET.
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*/
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fdt_addr_t translation_offset;
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#endif
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#ifdef CONFIG_ACPI
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/**
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* @acpi_ctx: ACPI context pointer
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*/
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struct acpi_ctx *acpi_ctx;
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/**
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* @acpi_start: Start address of ACPI tables
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*/
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ulong acpi_start;
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#endif
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#if CONFIG_IS_ENABLED(GENERATE_SMBIOS_TABLE)
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/**
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* @smbios_version: Points to SMBIOS type 0 version
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*/
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char *smbios_version;
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#endif
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#if CONFIG_IS_ENABLED(EVENT)
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/**
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* @event_state: Points to the current state of events
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*/
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struct event_state event_state;
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#endif
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#ifdef CONFIG_CYCLIC
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/**
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* @cyclic_list: list of registered cyclic functions
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*/
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struct hlist_head cyclic_list;
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#endif
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/**
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* @dmtag_list: List of DM tags
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*/
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struct list_head dmtag_list;
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};
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#ifndef DO_DEPS_ONLY
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static_assert(sizeof(struct global_data) == GD_SIZE);
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#endif
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/**
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* gd_board_type() - retrieve board type
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*
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* Return: global board type
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*/
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#ifdef CONFIG_BOARD_TYPES
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#define gd_board_type() gd->board_type
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#else
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#define gd_board_type() 0
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#endif
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/* These macros help avoid #ifdefs in the code */
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#if CONFIG_IS_ENABLED(OF_LIVE)
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#define gd_of_root() gd->of_root
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#define gd_of_root_ptr() &gd->of_root
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#define gd_set_of_root(_root) gd->of_root = (_root)
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#else
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#define gd_of_root() NULL
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#define gd_of_root_ptr() NULL
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#define gd_set_of_root(_root)
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#endif
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#if CONFIG_IS_ENABLED(OF_PLATDATA_DRIVER_RT)
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#define gd_set_dm_driver_rt(dyn) gd->dm_driver_rt = dyn
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#define gd_dm_driver_rt() gd->dm_driver_rt
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#else
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#define gd_set_dm_driver_rt(dyn)
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#define gd_dm_driver_rt() NULL
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#endif
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#if CONFIG_IS_ENABLED(OF_PLATDATA_RT)
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#define gd_set_dm_udevice_rt(dyn) gd->dm_udevice_rt = dyn
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#define gd_dm_udevice_rt() gd->dm_udevice_rt
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#define gd_set_dm_priv_base(dyn) gd->dm_priv_base = dyn
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#define gd_dm_priv_base() gd->dm_priv_base
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#else
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#define gd_set_dm_udevice_rt(dyn)
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#define gd_dm_udevice_rt() NULL
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#define gd_set_dm_priv_base(dyn)
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#define gd_dm_priv_base() NULL
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#endif
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#ifdef CONFIG_ACPI
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#define gd_acpi_ctx() gd->acpi_ctx
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#define gd_acpi_start() gd->acpi_start
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#define gd_set_acpi_start(addr) gd->acpi_start = addr
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#else
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#define gd_acpi_ctx() NULL
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#define gd_acpi_start() 0UL
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#define gd_set_acpi_start(addr)
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#endif
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#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
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#define gd_multi_dtb_fit() gd->multi_dtb_fit
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#define gd_set_multi_dtb_fit(_dtb) gd->multi_dtb_fit = _dtb
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#else
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#define gd_multi_dtb_fit() NULL
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#define gd_set_multi_dtb_fit(_dtb)
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#endif
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#if CONFIG_IS_ENABLED(EVENT_DYNAMIC)
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#define gd_event_state() ((struct event_state *)&gd->event_state)
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#else
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#define gd_event_state() NULL
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#endif
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#if CONFIG_IS_ENABLED(CMD_BDINFO_EXTRA)
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#define gd_malloc_start() gd->malloc_start
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#define gd_set_malloc_start(_val) gd->malloc_start = (_val)
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#else
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#define gd_malloc_start() 0
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#define gd_set_malloc_start(val)
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#endif
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#if CONFIG_IS_ENABLED(PCI)
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#define gd_set_pci_ram_top(val) gd->pci_ram_top = val
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#else
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#define gd_set_pci_ram_top(val)
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#endif
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/**
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* enum gd_flags - global data flags
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*
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* See field flags of &struct global_data.
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*/
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enum gd_flags {
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/**
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* @GD_FLG_RELOC: code was relocated to RAM
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*/
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GD_FLG_RELOC = 0x00001,
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/**
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* @GD_FLG_DEVINIT: devices have been initialized
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*/
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GD_FLG_DEVINIT = 0x00002,
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/**
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* @GD_FLG_SILENT: silent mode
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|
*/
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GD_FLG_SILENT = 0x00004,
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/**
|
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* @GD_FLG_POSTFAIL: critical POST test failed
|
|
*/
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GD_FLG_POSTFAIL = 0x00008,
|
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/**
|
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* @GD_FLG_POSTSTOP: POST sequence aborted
|
|
*/
|
|
GD_FLG_POSTSTOP = 0x00010,
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/**
|
|
* @GD_FLG_LOGINIT: log Buffer has been initialized
|
|
*/
|
|
GD_FLG_LOGINIT = 0x00020,
|
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/**
|
|
* @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_CYCLIC_RUNNING: cyclic_run is in progress
|
|
*/
|
|
GD_FLG_CYCLIC_RUNNING = 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,
|
|
/**
|
|
* @GD_FLG_FDT_CHANGED: Device tree change has been detected by tests
|
|
*/
|
|
GD_FLG_FDT_CHANGED = 0x100000,
|
|
/**
|
|
* @GD_FLG_OF_TAG_MIGRATE: Device tree has old u-boot,dm- tags
|
|
*/
|
|
GD_FLG_OF_TAG_MIGRATE = 0x200000,
|
|
/**
|
|
* @GD_FLG_DM_DEAD: Driver model is not accessible. This can be set when
|
|
* the memory used to holds its tables has been mapped out.
|
|
*/
|
|
GD_FLG_DM_DEAD = 0x400000,
|
|
};
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __ASM_GENERIC_GBL_DATA_H */
|