From: Ian Campbell ijc@hellion.org.uk
In this case the secure code lives in RAM, and hence needs to be reserved, but it has been relocated, so the reservation of __secure_start does not apply.
Add support for setting CONFIG_ARMV7_SECURE_RESERVE_SIZE to reserve such a region.
This will be used in a subsequent patch for Jetson-TK1
Signed-off-by: Ian Campbell ijc@hellion.org.uk Signed-off-by: Jan Kiszka jan.kiszka@siemens.com --- arch/arm/cpu/armv7/virt-dt.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/arm/cpu/armv7/virt-dt.c b/arch/arm/cpu/armv7/virt-dt.c index ad19e4c..eb95031 100644 --- a/arch/arm/cpu/armv7/virt-dt.c +++ b/arch/arm/cpu/armv7/virt-dt.c @@ -96,6 +96,11 @@ int armv7_update_dt(void *fdt) /* secure code lives in RAM, keep it alive */ fdt_add_mem_rsv(fdt, (unsigned long)__secure_start, __secure_end - __secure_start); +#elif defined(CONFIG_ARMV7_SECURE_RESERVE_SIZE) + /* secure code has been relocated into RAM carveout, keep it alive */ + fdt_add_mem_rsv(fdt, + CONFIG_ARMV7_SECURE_BASE, + CONFIG_ARMV7_SECURE_RESERVE_SIZE); #endif
return fdt_psci(fdt);