This is an old revision of the document!
Explanation of initialization of struct bd_info
, in the context of Zedboard.
Non-Zedboard content removed for brevity.
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 ... 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 */ ... 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;