1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (c) 2012 The Chromium OS Authors.
4 * (C) Copyright 2002-2010
5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 #ifndef __ASM_GENERIC_GBL_DATA_H
9 #define __ASM_GENERIC_GBL_DATA_H
11 * The following data structure is placed in some memory which is
12 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
13 * some locked parts of the data cache) to allow for a minimum set of
14 * global variables during system initialization (until we have set
15 * up the memory controller so that we can use RAM).
17 * Keep it *SMALL* and remember to set GENERATED_GBL_DATA_SIZE > sizeof(gd_t)
19 * Each architecture has its own private fields. For now all are private
24 #include <linux/list.h>
26 typedef struct global_data {
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 */
38 #if defined(CONFIG_POST)
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 */
43 #ifdef CONFIG_BOARD_TYPES
44 unsigned long board_type;
46 unsigned long have_console; /* serial_init() was called */
47 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
48 unsigned long precon_buf_idx; /* Pre-Console buffer index */
50 unsigned long env_addr; /* Address of Environment struct */
51 unsigned long env_valid; /* Environment valid? enum env_valid */
52 unsigned long env_has_init; /* Bitmask of boolean of struct env_location offsets */
53 int env_load_prio; /* Priority of the loaded environment */
55 unsigned long ram_base; /* Base address of RAM used by U-Boot */
56 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 */
66 struct udevice *dm_root; /* Root instance for Driver Model */
67 struct udevice *dm_root_f; /* Pre-relocation root instance */
68 struct list_head uclass_root; /* Head of core tree */
71 struct udevice *timer; /* Timer instance for Driver Model */
74 const void *fdt_blob; /* Our device tree, NULL if none */
75 void *new_fdt; /* Relocated FDT */
76 unsigned long fdt_size; /* Space reserved for relocated FDT */
78 struct device_node *of_root;
80 struct jt_funcs *jt; /* jump table */
81 char env_buf[32]; /* buffer for env_get() before reloc. */
83 void *trace_buff; /* The trace buffer */
85 #if defined(CONFIG_SYS_I2C)
86 int cur_i2c_bus; /* current used i2c bus */
88 #ifdef CONFIG_SYS_I2C_MXC
91 unsigned int timebase_h;
92 unsigned int timebase_l;
93 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
94 unsigned long malloc_base; /* base address of early malloc() */
95 unsigned long malloc_limit; /* limit address */
96 unsigned long malloc_ptr; /* current address */
99 struct pci_controller *hose; /* PCI hose for early use */
100 phys_addr_t pci_ram_top; /* top of region accessible to PCI */
102 #ifdef CONFIG_PCI_BOOTDELAY
105 struct udevice *cur_serial_dev; /* current serial device */
106 struct arch_global_data arch; /* architecture-specific data */
107 #ifdef CONFIG_CONSOLE_RECORD
108 struct membuff console_out; /* console output */
109 struct membuff console_in; /* console input */
111 #ifdef CONFIG_DM_VIDEO
112 ulong video_top; /* Top of video frame buffer area */
113 ulong video_bottom; /* Bottom of video frame buffer area */
115 #ifdef CONFIG_BOOTSTAGE
116 struct bootstage_data *bootstage; /* Bootstage information */
117 struct bootstage_data *new_bootstage; /* Relocated bootstage info */
120 int log_drop_count; /* Number of dropped log messages */
121 int default_log_level; /* For devices with no filters */
122 struct list_head log_head; /* List of struct log_device */
123 int log_fmt; /* Mask containing log format info */
125 #if CONFIG_IS_ENABLED(BLOBLIST)
126 struct bloblist_hdr *bloblist; /* Bloblist information */
127 struct bloblist_hdr *new_bloblist; /* Relocated blolist info */
129 struct spl_handoff *spl_handoff;
135 #ifdef CONFIG_BOARD_TYPES
136 #define gd_board_type() gd->board_type
138 #define gd_board_type() 0
142 * Global Data Flags - the top 16 bits are reserved for arch-specific flags
144 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
145 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
146 #define GD_FLG_SILENT 0x00004 /* Silent mode */
147 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
148 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
149 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
150 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
151 #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */
152 #define GD_FLG_SERIAL_READY 0x00100 /* Pre-reloc serial console ready */
153 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready */
154 #define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called */
155 #define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */
156 #define GD_FLG_RECORD 0x01000 /* Record console */
157 #define GD_FLG_ENV_DEFAULT 0x02000 /* Default variable flag */
158 #define GD_FLG_SPL_EARLY_INIT 0x04000 /* Early SPL init is done */
159 #define GD_FLG_LOG_READY 0x08000 /* Log system is ready for use */
161 #endif /* __ASM_GENERIC_GBL_DATA_H */