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 <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) || defined(CONFIG_LOGBUFFER) 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 #ifdef CONFIG_PRE_CONSOLE_BUFFER 48 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 49 #endif 50 #ifdef CONFIG_MODEM_SUPPORT 51 unsigned long do_mdm_init; 52 unsigned long be_quiet; 53 #endif 54 unsigned long env_addr; /* Address of Environment struct */ 55 unsigned long env_valid; /* Checksum of Environment valid? */ 56 57 unsigned long ram_top; /* Top address of RAM used by U-Boot */ 58 59 unsigned long relocaddr; /* Start address of U-Boot in RAM */ 60 phys_size_t ram_size; /* RAM size */ 61 unsigned long mon_len; /* monitor len */ 62 unsigned long irq_sp; /* irq stack pointer */ 63 unsigned long start_addr_sp; /* start_addr_stackpointer */ 64 unsigned long reloc_off; 65 struct global_data *new_gd; /* relocated global data */ 66 67 #ifdef CONFIG_DM 68 struct device *dm_root; /* Root instance for Driver Model */ 69 struct list_head uclass_root; /* Head of core tree */ 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 void **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 unsigned long timebase_h; 84 unsigned long timebase_l; 85 struct arch_global_data arch; /* architecture-specific data */ 86 } gd_t; 87 #endif 88 89 /* 90 * Global Data Flags 91 */ 92 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 93 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 94 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 95 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 96 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 97 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 98 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 99 #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */ 100 101 #endif /* __ASM_GENERIC_GBL_DATA_H */ 102