kparam-s3c2410.c

ADS下的bios工程

/*
 * This file is used to set up the kernel parameters
 *  This file should be maintained to size <= 2k or 1.5k
 *   stepping stone(4k) = SIMPLE CPU SETTING + TAGS + NAND READ
 */
#include <asm/setup.h>

#ifdef  __BOOT_PARAMETER__
static struct tag_s3c2410 {
    struct tag_header    hdr1;
    struct tag_core    core;
    struct tag_header    hdr2;
    struct tag_mem32    bank6;
    struct tag_header    hdr3;
    struct tag_mem32    bank0;
    struct tag_header    hdr4;
    struct tag_mem32    bank4;
    struct tag_header    hdr5;
    struct tag_videolfb    video;
    struct tag_header    hdr6;
} bios_tags = {
    {tag_size(struct tag_core), ATAG_CORE}, 
    {1, 0x1000, 0xff},                        /* MUST BE FIRST */
    {tag_size(struct tag_mem32), ATAG_MEM},
    {0x30000000, 0x1000000},                  /* bank 6: 16Megabytes */
#ifdef  __MEM_CAPTURE__
#ifdef  __MEM_PARSIMONY__
    {tag_size(struct tag_mem32), ATAG_MEM},
    {0x0, 0x1000},                            /* bank 0: 4Kilobytes */
#endif
    {tag_size(struct tag_mem32), ATAG_MEM},
    {0x18000000, 0x1000},                     /* bank 3: 4Kilobytes */
#endif
    {tag_size(struct tag_videolfb), ATAG_VIDEOLFB},
    {0},                                      /* later */
    {0, ATAG_NONE}
};

/*
 * Later making it more general to use
 */
void
copy_tag_to_phys_ram(unsigned long phy_addr)
{
    memcpy((unsigned char *)&bios_tags, (unsigned char *)phy_addr, 
          sizeof(biso_tags));
}
#else  /* __BOOT_PARAMETER__ */
void
copy_tag_to_phys_ram(unsigned long phy_addr)
{
    return  ;
}
#endif /* !__BOOT_PARAMETER__ */