1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (c) 2012 The Chromium OS Authors. 4 * (C) Copyright 2002-2010 5 * Wolfgang Denk, DENX Software Engineering, wd (at) denx.de. 6 */ 7 8 #ifndef __ASM_GENERIC_GBL_DATA_H 9 #define __ASM_GENERIC_GBL_DATA_H 10 /* 11 * The following data structure is placed in some memory which is 12 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 13 * some locked parts of the data cache) to allow for a minimum set of 14 * global variables during system initialization (until we have set 15 * up the memory controller so that we can use RAM). 16 * 17 * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t) 18 * 19 * Each architecture has its own private fields. For now all are private 20 */ 21 22 #ifndef __ASSEMBLY__ 23 #include <membuff.h> 24 #include <linux/list.h> 25 26 typedef struct global_data { 27 bd_t *bd; 28 unsigned long flags; 29 unsigned int baudrate; 30 unsigned long cpu_clk; /* CPU clock in Hz! */ 31 unsigned long bus_clk; 32 /* We cannot bracket this with CONFIG_PCI due to mpc5xxx */ 33 unsigned long pci_clk; 34 unsigned long mem_clk; 35 #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO) 36 unsigned long fb_base; /* Base address of framebuffer mem */ 37 #endif 38 #if defined(CONFIG_POST) 39 unsigned long post_log_word; /* Record POST activities */ 40 unsigned long post_log_res; /* success of POST test */ 41 unsigned long post_init_f_time; /* When post_init_f started */ 42 #endif 43 #ifdef CONFIG_BOARD_TYPES 44 unsigned long board_type; 45 #endif 46 unsigned long have_console; /* serial_init() was called */ 47 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER) 48 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 49 #endif 50 unsigned long env_addr; /* Address of Environment struct */ 51 unsigned long env_valid; /* Environment valid? enum env_valid */ 52 unsigned long env_has_init; /* Bitmask of boolean of struct env_location offsets */ 53 int env_load_location; 54 55 unsigned long ram_top; /* Top address of RAM used by U-Boot */ 56 unsigned long relocaddr; /* Start address of U-Boot in RAM */ 57 phys_size_t ram_size; /* RAM size */ 58 unsigned long mon_len; /* monitor len */ 59 unsigned long irq_sp; /* irq stack pointer */ 60 unsigned long start_addr_sp; /* start_addr_stackpointer */ 61 unsigned long reloc_off; 62 struct global_data *new_gd; /* relocated global data */ 63 64 #ifdef CONFIG_DM 65 struct udevice *dm_root; /* Root instance for Driver Model */ 66 struct udevice *dm_root_f; /* Pre-relocation root instance */ 67 struct list_head uclass_root; /* Head of core tree */ 68 #endif 69 #ifdef CONFIG_TIMER 70 struct udevice *timer; /* Timer instance for Driver Model */ 71 #endif 72 73 const void *fdt_blob; /* Our device tree, NULL if none */ 74 void *new_fdt; /* Relocated FDT */ 75 unsigned long fdt_size; /* Space reserved for relocated FDT */ 76 #ifdef CONFIG_OF_LIVE 77 struct device_node *of_root; 78 #endif 79 struct jt_funcs *jt; /* jump table */ 80 char env_buf[32]; /* buffer for env_get() before reloc. */ 81 #ifdef CONFIG_TRACE 82 void *trace_buff; /* The trace buffer */ 83 #endif 84 #if defined(CONFIG_SYS_I2C) 85 int cur_i2c_bus; /* current used i2c bus */ 86 #endif 87 #ifdef CONFIG_SYS_I2C_MXC 88 void *srdata[10]; 89 #endif 90 unsigned int timebase_h; 91 unsigned int timebase_l; 92 #if CONFIG_VAL(SYS_MALLOC_F_LEN) 93 unsigned long malloc_base; /* base address of early malloc() */ 94 unsigned long malloc_limit; /* limit address */ 95 unsigned long malloc_ptr; /* current address */ 96 #endif 97 #ifdef CONFIG_PCI 98 struct pci_controller *hose; /* PCI hose for early use */ 99 phys_addr_t pci_ram_top; /* top of region accessible to PCI */ 100 #endif 101 #ifdef CONFIG_PCI_BOOTDELAY 102 int pcidelay_done; 103 #endif 104 struct udevice *cur_serial_dev; /* current serial device */ 105 struct arch_global_data arch; /* architecture-specific data */ 106 #ifdef CONFIG_CONSOLE_RECORD 107 struct membuff console_out; /* console output */ 108 struct membuff console_in; /* console input */ 109 #endif 110 #ifdef CONFIG_DM_VIDEO 111 ulong video_top; /* Top of video frame buffer area */ 112 ulong video_bottom; /* Bottom of video frame buffer area */ 113 #endif 114 #ifdef CONFIG_BOOTSTAGE 115 struct bootstage_data *bootstage; /* Bootstage information */ 116 struct bootstage_data *new_bootstage; /* Relocated bootstage info */ 117 #endif 118 #ifdef CONFIG_LOG 119 int log_drop_count; /* Number of dropped log messages */ 120 int default_log_level; /* For devices with no filters */ 121 struct list_head log_head; /* List of struct log_device */ 122 int log_fmt; /* Mask containing log format info */ 123 #endif 124 } gd_t; 125 #endif 126 127 #ifdef CONFIG_BOARD_TYPES 128 #define gd_board_type() gd->board_type 129 #else 130 #define gd_board_type() 0 131 #endif 132 133 /* 134 * Global Data Flags - the top 16 bits are reserved for arch-specific flags 135 */ 136 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 137 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 138 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 139 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 140 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 141 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 142 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 143 #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */ 144 #define GD_FLG_SERIAL_READY 0x00100 /* Pre-reloc serial console ready */ 145 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready */ 146 #define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called */ 147 #define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */ 148 #define GD_FLG_RECORD 0x01000 /* Record console */ 149 #define GD_FLG_ENV_DEFAULT 0x02000 /* Default variable flag */ 150 #define GD_FLG_SPL_EARLY_INIT 0x04000 /* Early SPL init is done */ 151 #define GD_FLG_LOG_READY 0x08000 /* Log system is ready for use */ 152 153 #endif /* __ASM_GENERIC_GBL_DATA_H */ 154
