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arm: Check dtb version against the one we're expecting to find

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Reviewed by:	imp, emaste, mmel
Differential Revision:	https://reviews.freebsd.org/D26725
This commit is contained in:
Emmanuel Vadot 2020-10-10 07:20:59 +00:00
parent 4a63c1c1ed
commit e63faa9ba8
1 changed files with 14 additions and 0 deletions
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14
sys/arm/arm/machdep.c
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@ -1111,6 +1111,8 @@ initarm(struct arm_boot_params *abp)
char *env;
void *kmdp;
int err_devmap, mem_regions_sz;
phandle_t root;
char dts_version[255];
#ifdef EFI
struct efi_map_header *efihdr;
#endif
@ -1273,6 +1275,18 @@ initarm(struct arm_boot_params *abp)
platform_late_init();
root = OF_finddevice("/");
if (OF_getprop(root, "freebsd,dts-version", dts_version, sizeof(dts_version)) > 0) {
if (strcmp(LINUX_DTS_VERSION, dts_version) != 0)
printf("WARNING: DTB version is %s while kernel expects %s, "
"please update the DTB in the ESP\n",
dts_version,
LINUX_DTS_VERSION);
} else {
printf("WARNING: Cannot find freebsd,dts-version property, "
"cannot check DTB compliance\n");
}
/*
* We must now clean the cache again....
* Cleaning may be done by reading new data to displace any