static void
bcm2835_late_init(platform_t plat)
{
phandle_t system;
pcell_t cells[2];
int len;
system = OF_finddevice("/system");
if (system != 0) {
len = OF_getprop(system, "linux,serial", &cells, sizeof(cells));
if (len > 0)
board_set_serial(fdt64_to_cpu(*((uint64_t *)cells)));
len = OF_getprop(system, "linux,revision", &cells, sizeof(cells));
if (len > 0)
board_set_revision(fdt32_to_cpu(*((uint32_t *)cells)));
}
}
static vm_offset_t
linux_parse_boot_param(struct arm_boot_params *abp)
{
struct arm_lbabi_tag *walker;
uint32_t revision;
uint64_t serial;
int size;
vm_offset_t lastaddr;
#ifdef FDT
struct fdt_header *dtb_ptr;
uint32_t dtb_size;
#endif
/*
* Linux boot ABI: r0 = 0, r1 is the board type (!= 0) and r2
* is atags or dtb pointer. If all of these aren't satisfied,
* then punt. Unfortunately, it looks like DT enabled kernels
* doesn't uses board type and U-Boot delivers 0 in r1 for them.
*/
if (abp->abp_r0 != 0 || abp->abp_r2 == 0)
return (0);
#ifdef FDT
/* Test if r2 point to valid DTB. */
dtb_ptr = (struct fdt_header *)abp->abp_r2;
if (fdt_check_header(dtb_ptr) == 0) {
dtb_size = fdt_totalsize(dtb_ptr);
return (fake_preload_metadata(abp, dtb_ptr, dtb_size));
}
#endif
board_id = abp->abp_r1;
walker = (struct arm_lbabi_tag *)abp->abp_r2;
if (ATAG_TAG(walker) != ATAG_CORE)
return 0;
atag_list = walker;
while (ATAG_TAG(walker) != ATAG_NONE) {
switch (ATAG_TAG(walker)) {
case ATAG_CORE:
break;
case ATAG_MEM:
arm_physmem_hardware_region(walker->u.tag_mem.start,
walker->u.tag_mem.size);
break;
case ATAG_INITRD2:
break;
case ATAG_SERIAL:
serial = walker->u.tag_sn.high;
serial <<= 32;
serial |= walker->u.tag_sn.low;
board_set_serial(serial);
break;
case ATAG_REVISION:
revision = walker->u.tag_rev.rev;
board_set_revision(revision);
break;
case ATAG_CMDLINE:
size = ATAG_SIZE(walker) -
sizeof(struct arm_lbabi_header);
size = min(size, LBABI_MAX_COMMAND_LINE);
strncpy(linux_command_line, walker->u.tag_cmd.command,
size);
linux_command_line[size] = '\0';
break;
default:
break;
}
walker = ATAG_NEXT(walker);
}
/* Save a copy for later */
bcopy(atag_list, atags,
(char *)walker - (char *)atag_list + ATAG_SIZE(walker));
lastaddr = fake_preload_metadata(abp, NULL, 0);
cmdline_set_env(linux_command_line, CMDLINE_GUARD);
return lastaddr;
}