Tegra210: lock PMC registers holding CPU vector addresses

This patch locks access to the PMC registers which hold the CPU reset
vector addresses. The PMC registers are used by the warmboot code and
must be locked during boot/resume to avoid booting into custom firmware
installed by unknown parties e.g. hackers.

Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

diff --git a/plat/nvidia/tegra/soc/t210/plat_secondary.c b/plat/nvidia/tegra/soc/t210/plat_secondary.c
index fb3cf714366f531c8468630a57d024eca0c70a5a..b07f446d0c5d27bda3029c96203c578b5b1680e1 100644 (file)
--- a/plat/nvidia/tegra/soc/t210/plat_secondary.c
+++ b/plat/nvidia/tegra/soc/t210/plat_secondary.c
@@ -60,4 +60,5 @@ void plat_secondary_setup(void)
 
        /* configure PMC */
        tegra_pmc_cpu_setup(reset_addr);
+       tegra_pmc_lock_cpu_vectors();
 }