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; /* Checksum of Environment 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 struct jt_funcs *jt; /* jump table */ 76 char env_buf[32]; /* buffer for getenv() before reloc. */ 77 #ifdef CONFIG_TRACE 78 void *trace_buff; /* The trace buffer */ 79 #endif 80 #if defined(CONFIG_SYS_I2C) 81 int cur_i2c_bus; /* current used i2c bus */ 82 #endif 83 #ifdef CONFIG_SYS_I2C_MXC 84 void *srdata[10]; 85 #endif 86 unsigned long timebase_h; 87 unsigned long timebase_l; 88 #ifdef CONFIG_SYS_MALLOC_F_LEN 89 unsigned long malloc_base; /* base address of early malloc() */ 90 unsigned long malloc_limit; /* limit address */ 91 unsigned long malloc_ptr; /* current address */ 92 #endif 93 #ifdef CONFIG_PCI 94 struct pci_controller *hose; /* PCI hose for early use */ 95 phys_addr_t pci_ram_top; /* top of region accessible to PCI */ 96 #endif 97 #ifdef CONFIG_PCI_BOOTDELAY 98 int pcidelay_done; 99 #endif 100 struct udevice *cur_serial_dev; /* current serial device */ 101 struct arch_global_data arch; /* architecture-specific data */ 102 #ifdef CONFIG_CONSOLE_RECORD 103 struct membuff console_out; /* console output */ 104 struct membuff console_in; /* console input */ 105 #endif 106 #ifdef CONFIG_DM_VIDEO 107 ulong video_top; /* Top of video frame buffer area */ 108 ulong video_bottom; /* Bottom of video frame buffer area */ 109 #endif 110 } gd_t; 111 #endif 112 113 /* 114 * Global Data Flags - the top 16 bits are reserved for arch-specific flags 115 */ 116 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 117 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 118 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 119 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 120 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 121 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 122 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 123 #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */ 124 #define GD_FLG_SERIAL_READY 0x00100 /* Pre-reloc serial console ready */ 125 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready */ 126 #define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called */ 127 #define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */ 128 #define GD_FLG_RECORD 0x01000 /* Record console */ 129 #define GD_FLG_ENV_DEFAULT 0x02000 /* Default variable flag */ 130 131 #endif /* __ASM_GENERIC_GBL_DATA_H */ 132