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 #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) || 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 */
43 #ifdef CONFIG_BOARD_TYPES
44 unsigned long board_type;
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 */
50 #ifdef CONFIG_MODEM_SUPPORT
51 unsigned long do_mdm_init;
52 unsigned long be_quiet;
54 unsigned long env_addr; /* Address of Environment struct */
55 unsigned long env_valid; /* Checksum of Environment valid? */
57 unsigned long ram_top; /* Top address of RAM used by U-Boot */
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 */
68 struct udevice *dm_root; /* Root instance for Driver Model */
69 struct udevice *dm_root_f; /* Pre-relocation root instance */
70 struct list_head uclass_root; /* Head of core tree */
73 struct udevice *timer; /* Timer instance for Driver Model */
76 const void *fdt_blob; /* Our device tree, NULL if none */
77 void *new_fdt; /* Relocated FDT */
78 unsigned long fdt_size; /* Space reserved for relocated FDT */
79 struct jt_funcs *jt; /* jump table */
80 char env_buf[32]; /* buffer for getenv() before reloc. */
82 void *trace_buff; /* The trace buffer */
84 #if defined(CONFIG_SYS_I2C)
85 int cur_i2c_bus; /* current used i2c bus */
87 #ifdef CONFIG_SYS_I2C_MXC
90 unsigned long timebase_h;
91 unsigned long timebase_l;
92 #ifdef CONFIG_SYS_MALLOC_F_LEN
93 unsigned long malloc_base; /* base address of early malloc() */
94 unsigned long malloc_limit; /* limit address */
95 unsigned long malloc_ptr; /* current address */
98 struct pci_controller *hose; /* PCI hose for early use */
99 phys_addr_t pci_ram_top; /* top of region accessible to PCI */
101 #ifdef CONFIG_PCI_BOOTDELAY
104 struct udevice *cur_serial_dev; /* current serial device */
105 struct arch_global_data arch; /* architecture-specific data */
110 * Global Data Flags - the top 16 bits are reserved for arch-specific flags
112 #define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */
113 #define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */
114 #define GD_FLG_SILENT 0x00004 /* Silent mode */
115 #define GD_FLG_POSTFAIL 0x00008 /* Critical POST test failed */
116 #define GD_FLG_POSTSTOP 0x00010 /* POST seqeunce aborted */
117 #define GD_FLG_LOGINIT 0x00020 /* Log Buffer has been initialized */
118 #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */
119 #define GD_FLG_ENV_READY 0x00080 /* Env. imported into hash table */
120 #define GD_FLG_SERIAL_READY 0x00100 /* Pre-reloc serial console ready */
121 #define GD_FLG_FULL_MALLOC_INIT 0x00200 /* Full malloc() is ready */
122 #define GD_FLG_SPL_INIT 0x00400 /* spl_init() has been called */
123 #define GD_FLG_SKIP_RELOC 0x00800 /* Don't relocate */
125 #endif /* __ASM_GENERIC_GBL_DATA_H */