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 typedef struct global_data { 25 bd_t *bd; 26 unsigned long flags; 27 unsigned int baudrate; 28 unsigned long cpu_clk; /* CPU clock in Hz! */ 29 unsigned long bus_clk; 30 /* We cannot bracket this with CONFIG_PCI due to mpc5xxx */ 31 unsigned long pci_clk; 32 unsigned long mem_clk; 33 #if defined(CONFIG_LCD) || defined(CONFIG_VIDEO) 34 unsigned long fb_base; /* Base address of framebuffer mem */ 35 #endif 36 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) 37 unsigned long post_log_word; /* Record POST activities */ 38 unsigned long post_log_res; /* success of POST test */ 39 unsigned long post_init_f_time; /* When post_init_f started */ 40 #endif 41 #ifdef CONFIG_BOARD_TYPES 42 unsigned long board_type; 43 #endif 44 unsigned long have_console; /* serial_init() was called */ 45 #ifdef CONFIG_PRE_CONSOLE_BUFFER 46 unsigned long precon_buf_idx; /* Pre-Console buffer index */ 47 #endif 48 #ifdef CONFIG_MODEM_SUPPORT 49 unsigned long do_mdm_init; 50 unsigned long be_quiet; 51 #endif 52 unsigned long env_addr; /* Address of Environment struct */ 53 unsigned long env_valid; /* Checksum of Environment valid? */ 54 55 unsigned long ram_top; /* Top address of RAM used by U-Boot */ 56 57 unsigned long relocaddr; /* Start address of U-Boot in RAM */ 58 phys_size_t ram_size; /* RAM size */ 59 unsigned long mon_len; /* monitor len */ 60 unsigned long irq_sp; /* irq stack pointer */ 61 unsigned long start_addr_sp; /* start_addr_stackpointer */ 62 unsigned long reloc_off; 63 struct global_data *new_gd; /* relocated global data */ 64 const void *fdt_blob; /* Our device tree, NULL if none */ 65 void *new_fdt; /* Relocated FDT */ 66 unsigned long fdt_size; /* Space reserved for relocated FDT */ 67 void **jt; /* jump table */ 68 char env_buf[32]; /* buffer for getenv() before reloc. */ 69 #ifdef CONFIG_TRACE 70 void *trace_buff; /* The trace buffer */ 71 #endif 72 #if defined(CONFIG_SYS_I2C) 73 int cur_i2c_bus; /* current used i2c bus */ 74 #endif 75 struct arch_global_data arch; /* architecture-specific data */ 76 } gd_t; 77 #endif 78 79 /* 80 * Global Data Flags 81 */ 82 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ 83 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ 84 #define GD_FLG_SILENT 0x00004 /* Silent mode */ 85 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */ 86 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */ 87 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */ 88 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ 89 #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */ 90 91 #endif /* __ASM_GENERIC_GBL_DATA_H */ 92