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kboot: aarch64 bi_loadsmap

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Since aarch64 is different, it needs a different smap. We first see if
we have the PA of the table from the FDT info. If so, we copy that and
quit. Otherwise, we do the best we can in translating the /proc/iomap
into EFI Memory Table format.

We also send the system table to the kernel.

Sponsored by:		Netflix
Reviewed by:		kevans
Differential Revision:	https://reviews.freebsd.org/D38255
This commit is contained in:
Warner Losh 2023-02-03 08:39:46 -07:00
parent b6755eabcc
commit e49773296c
1 changed files with 19 additions and 0 deletions
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19
stand/kboot/arch/aarch64/load_addr.c
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@ -152,3 +152,22 @@ kboot_get_phys_load_segment(void)
printf("Falling back to crazy address %#lx\n", s);
return (s);
}
void
bi_loadsmap(struct preloaded_file *kfp)
{
if (efi_systbl_phys)
file_addmetadata(kfp, MODINFOMD_FW_HANDLE, sizeof(efi_systbl_phys), &efi_systbl_phys);
/*
* If we have efi_map_hdr, then it's a pointer to the PA where this
* memory map lives. The trampoline code will copy it over. If we don't
* have it, we use whatever we found in /proc/iomap.
*/
if (efi_map_hdr != NULL) {
file_addmetadata(kfp, MODINFOMD_EFI_MAP, efi_map_size, efi_map_hdr);
return;
}
panic("Can't get UEFI memory map, nor a pointer to it, can't proceed.\n");
}