gd_t结构 bd_t结构

gd_t在u-boot-2018.07-fmxx/include/asm-generic/global_data.h中定义

typedef struct global_data {
    bd_t *bd;
    unsigned long flags;
    unsigned int baudrate;
    unsigned long cpu_clk;        /* CPU clock in Hz!        */
    unsigned long bus_clk;
    /* We cannot bracket this with CONFIG_PCI due to mpc5xxx */
    unsigned long pci_clk;
    unsigned long mem_clk;
#if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
    unsigned long fb_base;        /* Base address of framebuffer mem */
#endif
#if defined(CONFIG_POST)
    unsigned long post_log_word;    /* Record POST activities */
    unsigned long post_log_res;    /* success of POST test */
    unsigned long post_init_f_time;    /* When post_init_f started */
#endif
#ifdef CONFIG_BOARD_TYPES
    unsigned long board_type;
#endif
    unsigned long have_console;    /* serial_init() was called */
#if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
    unsigned long precon_buf_idx;    /* Pre-Console buffer index */
#endif
    unsigned long env_addr;        /* Address  of Environment struct */
    unsigned long env_valid;    /* Environment valid? enum env_valid */
    unsigned long env_has_init;    /* Bitmask of boolean of struct env_location offsets */
    int env_load_location;

unsigned long ram_top;        /* Top address of RAM used by U-Boot */
    unsigned long relocaddr;    /* Start address of U-Boot in RAM */
    phys_size_t ram_size;        /* RAM size */
    unsigned long mon_len;        /* monitor len */
    unsigned long irq_sp;        /* irq stack pointer */
    unsigned long start_addr_sp;    /* start_addr_stackpointer */
    unsigned long reloc_off;
    struct global_data *new_gd;    /* relocated global data */

#ifdef CONFIG_DM
    struct udevice    *dm_root;    /* Root instance for Driver Model */
    struct udevice    *dm_root_f;    /* Pre-relocation root instance */
    struct list_head uclass_root;    /* Head of core tree */
#endif
#ifdef CONFIG_TIMER
    struct udevice    *timer;        /* Timer instance for Driver Model */
#endif

const void *fdt_blob;        /* Our device tree, NULL if none */
    void *new_fdt;            /* Relocated FDT */
    unsigned long fdt_size;        /* Space reserved for relocated FDT */
#ifdef CONFIG_OF_LIVE
    struct device_node *of_root;
#endif
    struct jt_funcs *jt;        /* jump table */
    char env_buf[32];        /* buffer for env_get() before reloc. */
#ifdef CONFIG_TRACE
    void        *trace_buff;    /* The trace buffer */
#endif
#if defined(CONFIG_SYS_I2C)
    int        cur_i2c_bus;    /* current used i2c bus */
#endif
#ifdef CONFIG_SYS_I2C_MXC
    void *srdata[10];
#endif
    unsigned int timebase_h;
    unsigned int timebase_l;
#if CONFIG_VAL(SYS_MALLOC_F_LEN)
    unsigned long malloc_base;    /* base address of early malloc() */
    unsigned long malloc_limit;    /* limit address */
    unsigned long malloc_ptr;    /* current address */
#endif
#ifdef CONFIG_PCI
    struct pci_controller *hose;    /* PCI hose for early use */
    phys_addr_t pci_ram_top;    /* top of region accessible to PCI */
#endif
#ifdef CONFIG_PCI_BOOTDELAY
    int pcidelay_done;
#endif
    struct udevice *cur_serial_dev;    /* current serial device */
    struct arch_global_data arch;    /* architecture-specific data */
#ifdef CONFIG_CONSOLE_RECORD
    struct membuff console_out;    /* console output */
    struct membuff console_in;    /* console input */
#endif
#ifdef CONFIG_DM_VIDEO
    ulong video_top;        /* Top of video frame buffer area */
    ulong video_bottom;        /* Bottom of video frame buffer area */
#endif
#ifdef CONFIG_BOOTSTAGE
    struct bootstage_data *bootstage;    /* Bootstage information */
    struct bootstage_data *new_bootstage;    /* Relocated bootstage info */
#endif
#ifdef CONFIG_LOG
    int log_drop_count;        /* Number of dropped log messages */
    int default_log_level;        /* For devices with no filters */
    struct list_head log_head;    /* List of struct log_device */
    int log_fmt;            /* Mask containing log format info */
#endif
} gd_t;

bd_t在u-boot-2018.07-fmxx/include/asm-generic/global_data.h中定义

typedef struct bd_info {
    unsigned long    bi_memstart;    /* start of DRAM memory */
    phys_size_t    bi_memsize;    /* size     of DRAM memory in bytes */
    unsigned long    bi_flashstart;    /* start of FLASH memory */
    unsigned long    bi_flashsize;    /* size     of FLASH memory */
    unsigned long    bi_flashoffset; /* reserved area for startup monitor */
    unsigned long    bi_sramstart;    /* start of SRAM memory */
    unsigned long    bi_sramsize;    /* size     of SRAM memory */
#ifdef CONFIG_ARM
    unsigned long    bi_arm_freq; /* arm frequency */
    unsigned long    bi_dsp_freq; /* dsp core frequency */
    unsigned long    bi_ddr_freq; /* ddr frequency */
#endif
#if defined(CONFIG_MPC8xx) || defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
    unsigned long    bi_immr_base;    /* base of IMMR register */
#endif
#if defined(CONFIG_M68K)
    unsigned long    bi_mbar_base;    /* base of internal registers */
#endif
#if defined(CONFIG_MPC83xx)
    unsigned long    bi_immrbar;
#endif
    unsigned long    bi_bootflags;    /* boot / reboot flag (Unused) */
    unsigned long    bi_ip_addr;    /* IP Address */
    unsigned char    bi_enetaddr[6];    /* OLD: see README.enetaddr */
    unsigned short    bi_ethspeed;    /* Ethernet speed in Mbps */
    unsigned long    bi_intfreq;    /* Internal Freq, in MHz */
    unsigned long    bi_busfreq;    /* Bus Freq, in MHz */
#if defined(CONFIG_CPM2)
    unsigned long    bi_cpmfreq;    /* CPM_CLK Freq, in MHz */
    unsigned long    bi_brgfreq;    /* BRG_CLK Freq, in MHz */
    unsigned long    bi_sccfreq;    /* SCC_CLK Freq, in MHz */
    unsigned long    bi_vco;        /* VCO Out from PLL, in MHz */
#endif
#if defined(CONFIG_M68K)
    unsigned long    bi_ipbfreq;    /* IPB Bus Freq, in MHz */
    unsigned long    bi_pcifreq;    /* PCI Bus Freq, in MHz */
#endif
#if defined(CONFIG_EXTRA_CLOCK)
    unsigned long bi_inpfreq;    /* input Freq in MHz */
    unsigned long bi_vcofreq;    /* vco Freq in MHz */
    unsigned long bi_flbfreq;    /* Flexbus Freq in MHz */
#endif

#ifdef CONFIG_HAS_ETH1
    unsigned char   bi_enet1addr[6];    /* OLD: see README.enetaddr */
#endif
#ifdef CONFIG_HAS_ETH2
    unsigned char    bi_enet2addr[6];    /* OLD: see README.enetaddr */
#endif
#ifdef CONFIG_HAS_ETH3
    unsigned char   bi_enet3addr[6];    /* OLD: see README.enetaddr */
#endif
#ifdef CONFIG_HAS_ETH4
    unsigned char   bi_enet4addr[6];    /* OLD: see README.enetaddr */
#endif
#ifdef CONFIG_HAS_ETH5
    unsigned char   bi_enet5addr[6];    /* OLD: see README.enetaddr */
#endif

ulong            bi_arch_number;    /* unique id for this board */
    ulong            bi_boot_params;    /* where this board expects params */
#ifdef CONFIG_NR_DRAM_BANKS
    struct {            /* RAM configuration */
        phys_addr_t start;
        phys_size_t size;
    } bi_dram[CONFIG_NR_DRAM_BANKS];
#endif /* CONFIG_NR_DRAM_BANKS */
} bd_t;