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 	unsigned long timebase_h;
76 	unsigned long timebase_l;
77 	struct arch_global_data arch;	/* architecture-specific data */
78 } gd_t;
79 #endif
80 
81 /*
82  * Global Data Flags
83  */
84 #define GD_FLG_RELOC		0x00001	/* Code was relocated to RAM	   */
85 #define GD_FLG_DEVINIT		0x00002	/* Devices have been initialized   */
86 #define GD_FLG_SILENT		0x00004	/* Silent mode			   */
87 #define GD_FLG_POSTFAIL		0x00008	/* Critical POST test failed	   */
88 #define GD_FLG_POSTSTOP		0x00010	/* POST seqeunce aborted	   */
89 #define GD_FLG_LOGINIT		0x00020	/* Log Buffer has been initialized */
90 #define GD_FLG_DISABLE_CONSOLE	0x00040	/* Disable console (in & out)	   */
91 #define GD_FLG_ENV_READY	0x00080	/* Env. imported into hash table   */
92 
93 #endif /* __ASM_GENERIC_GBL_DATA_H */
94