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 typedef struct global_data { 28 bd_t *bd; 29 unsigned long flags; 30 unsigned int baudrate; 31 unsigned long cpu_clk; /* CPU clock in Hz! */ 32 unsigned long bus_clk; 33 /* We cannot bracket this with CONFIG_PCI due to mpc5xxx */ 34 unsigned long pci_clk; 35 unsigned long mem_clk; 36 #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO) 37 unsigned long fb_base; /* Base address of framebuffer mem */ 38 #endif 39 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) 40 unsigned long post_log_word; /* Record POST activities */ 41 unsigned long post_log_res; /* success of POST test */ 42 unsigned long post_init_f_time; /* When post_init_f started */ 43 #endif 44 #ifdef CONFIG_BOARD_TYPES 45 unsigned long board_type; 46 #endif 47 unsigned long have_console; /* serial_init() was called */ 48 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER) 49 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 50 #endif 51 unsigned long env_addr; /* Address of Environment struct */ 52 unsigned long env_valid; /* Environment valid? enum env_valid */ 53 54 unsigned long ram_top; /* Top address of RAM used by U-Boot */ 55 unsigned long relocaddr; /* Start address of U-Boot in RAM */ 56 phys_size_t ram_size; /* RAM size */ 57 unsigned long mon_len; /* monitor len */ 58 unsigned long irq_sp; /* irq stack pointer */ 59 unsigned long start_addr_sp; /* start_addr_stackpointer */ 60 unsigned long reloc_off; 61 struct global_data *new_gd; /* relocated global data */ 62 63 #ifdef CONFIG_DM 64 struct udevice *dm_root; /* Root instance for Driver Model */ 65 struct udevice *dm_root_f; /* Pre-relocation root instance */ 66 struct list_head uclass_root; /* Head of core tree */ 67 #endif 68 #ifdef CONFIG_TIMER 69 struct udevice *timer; /* Timer instance for Driver Model */ 70 #endif 71 72 const void *fdt_blob; /* Our device tree, NULL if none */ 73 void *new_fdt; /* Relocated FDT */ 74 unsigned long fdt_size; /* Space reserved for relocated FDT */ 75 #ifdef CONFIG_OF_LIVE 76 struct device_node *of_root; 77 #endif 78 struct jt_funcs *jt; /* jump table */ 79 char env_buf[32]; /* buffer for env_get() before reloc. */ 80 #ifdef CONFIG_TRACE 81 void *trace_buff; /* The trace buffer */ 82 #endif 83 #if defined(CONFIG_SYS_I2C) 84 int cur_i2c_bus; /* current used i2c bus */ 85 #endif 86 #ifdef CONFIG_SYS_I2C_MXC 87 void *srdata[10]; 88 #endif 89 unsigned int timebase_h; 90 unsigned int timebase_l; 91 #if CONFIG_VAL(SYS_MALLOC_F_LEN) 92 unsigned long malloc_base; /* base address of early malloc() */ 93 unsigned long malloc_limit; /* limit address */ 94 unsigned long malloc_ptr; /* current address */ 95 #endif 96 #ifdef CONFIG_PCI 97 struct pci_controller *hose; /* PCI hose for early use */ 98 phys_addr_t pci_ram_top; /* top of region accessible to PCI */ 99 #endif 100 #ifdef CONFIG_PCI_BOOTDELAY 101 int pcidelay_done; 102 #endif 103 struct udevice *cur_serial_dev; /* current serial device */ 104 struct arch_global_data arch; /* architecture-specific data */ 105 #ifdef CONFIG_CONSOLE_RECORD 106 struct membuff console_out; /* console output */ 107 struct membuff console_in; /* console input */ 108 #endif 109 #ifdef CONFIG_DM_VIDEO 110 ulong video_top; /* Top of video frame buffer area */ 111 ulong video_bottom; /* Bottom of video frame buffer area */ 112 #endif 113 #ifdef CONFIG_BOOTSTAGE 114 struct bootstage_data *bootstage; /* Bootstage information */ 115 struct bootstage_data *new_bootstage; /* Relocated bootstage info */ 116 #endif 117 } gd_t; 118 #endif 119 120 #ifdef CONFIG_BOARD_TYPES 121 #define gd_board_type() gd->board_type 122 #else 123 #define gd_board_type() 0 124 #endif 125 126 /* 127 * Global Data Flags - the top 16 bits are reserved for arch-specific flags 128 */ 129 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 130 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 131 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 132 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 133 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 134 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 135 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 136 #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */ 137 #define GD_FLG_SERIAL_READY 0x00100 /* Pre-reloc serial console ready */ 138 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready */ 139 #define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called */ 140 #define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */ 141 #define GD_FLG_RECORD 0x01000 /* Record console */ 142 #define GD_FLG_ENV_DEFAULT 0x02000 /* Default variable flag */ 143 #define GD_FLG_SPL_EARLY_INIT 0x04000 /* Early SPL init is done */ 144 145 #endif /* __ASM_GENERIC_GBL_DATA_H */ 146