2 * Copyright (c) 2012 The Chromium OS Authors.
3 * (C) Copyright 2002-2010
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * SPDX-License-Identifier: GPL-2.0+
9 #ifndef __ASM_GENERIC_GBL_DATA_H
10 #define __ASM_GENERIC_GBL_DATA_H
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).
18 * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
20 * Each architecture has its own private fields. For now all are private
24 typedef struct global_data {
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 */
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 */
41 #ifdef CONFIG_BOARD_TYPES
42 unsigned long board_type;
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 */
48 #ifdef CONFIG_MODEM_SUPPORT
49 unsigned long do_mdm_init;
50 unsigned long be_quiet;
52 unsigned long env_addr; /* Address of Environment struct */
53 unsigned long env_valid; /* Checksum of Environment valid? */
55 unsigned long ram_top; /* Top address of RAM used by U-Boot */
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. */
70 void *trace_buff; /* The trace buffer */
72 #if defined(CONFIG_SYS_I2C)
73 int cur_i2c_bus; /* current used i2c bus */
75 struct arch_global_data arch; /* architecture-specific data */
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 */
91 #endif /* __ASM_GENERIC_GBL_DATA_H */