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
25 #include <linux/list.h>
27 typedef struct global_data {
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 */
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 */
44 #ifdef CONFIG_BOARD_TYPES
45 unsigned long board_type;
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 */
51 unsigned long env_addr; /* Address of Environment struct */
52 unsigned long env_valid; /* Checksum of Environment valid? */
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 */
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 */
69 struct udevice *timer; /* Timer instance for Driver Model */
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. */
78 void *trace_buff; /* The trace buffer */
80 #if defined(CONFIG_SYS_I2C)
81 int cur_i2c_bus; /* current used i2c bus */
83 #ifdef CONFIG_SYS_I2C_MXC
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 */
94 struct pci_controller *hose; /* PCI hose for early use */
95 phys_addr_t pci_ram_top; /* top of region accessible to PCI */
97 #ifdef CONFIG_PCI_BOOTDELAY
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 */
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 */
113 #ifdef CONFIG_BOARD_TYPES
114 #define gd_board_type() gd->board_type
116 #define gd_board_type() 0
120 * Global Data Flags - the top 16 bits are reserved for arch-specific flags
122 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
123 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
124 #define GD_FLG_SILENT 0x00004 /* Silent mode */
125 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
126 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
127 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
128 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
129 #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */
130 #define GD_FLG_SERIAL_READY 0x00100 /* Pre-reloc serial console ready */
131 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready */
132 #define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called */
133 #define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */
134 #define GD_FLG_RECORD 0x01000 /* Record console */
135 #define GD_FLG_ENV_DEFAULT 0x02000 /* Default variable flag */
136 #define GD_FLG_SPL_EARLY_INIT 0x04000 /* Early SPL init is done */
138 #endif /* __ASM_GENERIC_GBL_DATA_H */