1 /* 2 * Copyright (c) 2012 The Chromium OS Authors. 3 * (C) Copyright 2002-2010 4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #ifndef __ASM_GENERIC_GBL_DATA_H 10 #define __ASM_GENERIC_GBL_DATA_H 11 /* 12 * The following data structure is placed in some memory which is 13 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 14 * some locked parts of the data cache) to allow for a minimum set of 15 * global variables during system initialization (until we have set 16 * up the memory controller so that we can use RAM). 17 * 18 * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t) 19 * 20 * Each architecture has its own private fields. For now all are private 21 */ 22 23 #ifndef __ASSEMBLY__ 24 #include <membuff.h> 25 #include <linux/list.h> 26 27 /* Never change the sequence of members !!! */ 28 struct pm_ctx { 29 unsigned long sp; 30 phys_addr_t cpu_resume_addr; 31 unsigned long suspend_regs[15]; 32 }; 33 34 typedef struct global_data { 35 bd_t *bd; 36 unsigned long flags; 37 unsigned int baudrate; 38 unsigned long cpu_clk; /* CPU clock in Hz! */ 39 unsigned long bus_clk; 40 /* We cannot bracket this with CONFIG_PCI due to mpc5xxx */ 41 unsigned long pci_clk; 42 unsigned long mem_clk; 43 #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO) 44 unsigned long fb_base; /* Base address of framebuffer mem */ 45 #endif 46 #if defined(CONFIG_POST) 47 unsigned long post_log_word; /* Record POST activities */ 48 unsigned long post_log_res; /* success of POST test */ 49 unsigned long post_init_f_time; /* When post_init_f started */ 50 #endif 51 #ifdef CONFIG_BOARD_TYPES 52 unsigned long board_type; 53 #endif 54 unsigned long have_console; /* serial_init() was called */ 55 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER) 56 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 57 #endif 58 unsigned long env_addr; /* Address of Environment struct */ 59 unsigned long env_valid; /* Environment valid? enum env_valid */ 60 61 unsigned long ram_top; /* Top address of RAM used by U-Boot */ 62 unsigned long relocaddr; /* Start address of U-Boot in RAM */ 63 phys_size_t ram_size; /* RAM size */ 64 unsigned long mon_len; /* monitor len */ 65 unsigned long irq_sp; /* irq stack pointer */ 66 unsigned long start_addr_sp; /* start_addr_stackpointer */ 67 unsigned long reloc_off; 68 struct global_data *new_gd; /* relocated global data */ 69 70 #ifdef CONFIG_DM 71 struct udevice *dm_root; /* Root instance for Driver Model */ 72 struct udevice *dm_root_f; /* Pre-relocation root instance */ 73 struct list_head uclass_root; /* Head of core tree */ 74 #endif 75 #ifdef CONFIG_TIMER 76 struct udevice *timer; /* Timer instance for Driver Model */ 77 #endif 78 79 const void *fdt_blob; /* Our device tree, NULL if none */ 80 void *new_fdt; /* Relocated FDT */ 81 unsigned long fdt_size; /* Space reserved for relocated FDT */ 82 #ifdef CONFIG_OF_LIVE 83 struct device_node *of_root; 84 #ifdef CONFIG_USING_KERNEL_DTB 85 void *kernel_fdt; /* Kernel FDT */ 86 struct device_node *kernel_of_root; 87 #endif 88 #endif 89 struct jt_funcs *jt; /* jump table */ 90 char env_buf[32]; /* buffer for env_get() before reloc. */ 91 #ifdef CONFIG_TRACE 92 void *trace_buff; /* The trace buffer */ 93 #endif 94 #if defined(CONFIG_SYS_I2C) 95 int cur_i2c_bus; /* current used i2c bus */ 96 #endif 97 #ifdef CONFIG_SYS_I2C_MXC 98 void *srdata[10]; 99 #endif 100 unsigned int timebase_h; 101 unsigned int timebase_l; 102 #if CONFIG_VAL(SYS_MALLOC_F_LEN) 103 unsigned long malloc_base; /* base address of early malloc() */ 104 unsigned long malloc_limit; /* limit address */ 105 unsigned long malloc_ptr; /* current address */ 106 #endif 107 #ifdef CONFIG_PCI 108 struct pci_controller *hose; /* PCI hose for early use */ 109 phys_addr_t pci_ram_top; /* top of region accessible to PCI */ 110 #endif 111 #ifdef CONFIG_PCI_BOOTDELAY 112 int pcidelay_done; 113 #endif 114 struct udevice *cur_serial_dev; /* current serial device */ 115 struct arch_global_data arch; /* architecture-specific data */ 116 #ifdef CONFIG_CONSOLE_RECORD 117 struct membuff console_out; /* console output */ 118 struct membuff console_in; /* console input */ 119 #endif 120 #ifdef CONFIG_DM_VIDEO 121 ulong video_top; /* Top of video frame buffer area */ 122 ulong video_bottom; /* Bottom of video frame buffer area */ 123 #endif 124 #ifdef CONFIG_BOOTSTAGE 125 struct bootstage_data *bootstage; /* Bootstage information */ 126 struct bootstage_data *new_bootstage; /* Relocated bootstage info */ 127 #endif 128 phys_addr_t pm_ctx_phys; 129 #ifdef CONFIG_LOG 130 int log_drop_count; /* Number of dropped log messages */ 131 int default_log_level; /* For devices with no filters */ 132 struct list_head log_head; /* List of struct log_device */ 133 #endif 134 } gd_t; 135 #endif 136 137 #ifdef CONFIG_BOARD_TYPES 138 #define gd_board_type() gd->board_type 139 #else 140 #define gd_board_type() 0 141 #endif 142 143 /* 144 * Global Data Flags - the top 16 bits are reserved for arch-specific flags 145 */ 146 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 147 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 148 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 149 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 150 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 151 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 152 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 153 #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */ 154 #define GD_FLG_SERIAL_READY 0x00100 /* Pre-reloc serial console ready */ 155 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready */ 156 #define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called */ 157 #define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */ 158 #define GD_FLG_RECORD 0x01000 /* Record console */ 159 #define GD_FLG_ENV_DEFAULT 0x02000 /* Default variable flag */ 160 #define GD_FLG_SPL_EARLY_INIT 0x04000 /* Early SPL init is done */ 161 #define GD_FLG_LOG_READY 0x08000 /* Log system is ready for use */ 162 163 #endif /* __ASM_GENERIC_GBL_DATA_H */ 164