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 #include <linux/list.h>
25 
26 typedef struct global_data {
27 	bd_t *bd;
28 	unsigned long flags;
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 */
37 #endif
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 */
42 #endif
43 #ifdef CONFIG_BOARD_TYPES
44 	unsigned long board_type;
45 #endif
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 */
49 #endif
50 #ifdef CONFIG_MODEM_SUPPORT
51 	unsigned long do_mdm_init;
52 	unsigned long be_quiet;
53 #endif
54 	unsigned long env_addr;	/* Address  of Environment struct */
55 	unsigned long env_valid;	/* Checksum of Environment valid? */
56 
57 	unsigned long ram_top;	/* Top address of RAM used by U-Boot */
58 
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 */
66 
67 #ifdef CONFIG_DM
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 */
71 #endif
72 
73 	const void *fdt_blob;	/* Our device tree, NULL if none */
74 	void *new_fdt;		/* Relocated FDT */
75 	unsigned long fdt_size;	/* Space reserved for relocated FDT */
76 	struct jt_funcs *jt;		/* jump table */
77 	char env_buf[32];	/* buffer for getenv() before reloc. */
78 #ifdef CONFIG_TRACE
79 	void		*trace_buff;	/* The trace buffer */
80 #endif
81 #if defined(CONFIG_SYS_I2C)
82 	int		cur_i2c_bus;	/* current used i2c bus */
83 #endif
84 #ifdef CONFIG_SYS_I2C_MXC
85 	void *srdata[10];
86 #endif
87 	unsigned long timebase_h;
88 	unsigned long timebase_l;
89 #ifdef CONFIG_SYS_MALLOC_F_LEN
90 	unsigned long malloc_base;	/* base address of early malloc() */
91 	unsigned long malloc_limit;	/* limit address */
92 	unsigned long malloc_ptr;	/* current address */
93 #endif
94 #ifdef CONFIG_PCI
95 	struct pci_controller *hose;	/* PCI hose for early use */
96 	phys_addr_t pci_ram_top;	/* top of region accessible to PCI */
97 #endif
98 #ifdef CONFIG_PCI_BOOTDELAY
99 	int pcidelay_done;
100 #endif
101 	struct udevice *cur_serial_dev;	/* current serial device */
102 	struct arch_global_data arch;	/* architecture-specific data */
103 } gd_t;
104 #endif
105 
106 /*
107  * Global Data Flags - the top 16 bits are reserved for arch-specific flags
108  */
109 #define GD_FLG_RELOC		0x00001	/* Code was relocated to RAM	   */
110 #define GD_FLG_DEVINIT		0x00002	/* Devices have been initialized   */
111 #define GD_FLG_SILENT		0x00004	/* Silent mode			   */
112 #define GD_FLG_POSTFAIL		0x00008	/* Critical POST test failed	   */
113 #define GD_FLG_POSTSTOP		0x00010	/* POST seqeunce aborted	   */
114 #define GD_FLG_LOGINIT		0x00020	/* Log Buffer has been initialized */
115 #define GD_FLG_DISABLE_CONSOLE	0x00040	/* Disable console (in & out)	   */
116 #define GD_FLG_ENV_READY	0x00080	/* Env. imported into hash table   */
117 #define GD_FLG_SERIAL_READY	0x00100	/* Pre-reloc serial console ready  */
118 #define GD_FLG_FULL_MALLOC_INIT	0x00200	/* Full malloc() is ready	   */
119 #define GD_FLG_SPL_INIT		0x00400	/* spl_init() has been called	   */
120 #define GD_FLG_SKIP_RELOC	0x00800	/* Don't relocate */
121 
122 #endif /* __ASM_GENERIC_GBL_DATA_H */
123