summaryrefslogtreecommitdiff
path: root/src/soc
diff options
context:
space:
mode:
Diffstat (limited to 'src/soc')
-rw-r--r--src/soc/nvidia/tegra132/soc.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/soc/nvidia/tegra132/soc.c b/src/soc/nvidia/tegra132/soc.c
index a77ffbbff4..476dec7a03 100644
--- a/src/soc/nvidia/tegra132/soc.c
+++ b/src/soc/nvidia/tegra132/soc.c
@@ -30,6 +30,7 @@
#include <soc/addressmap.h>
#include <soc/clock.h>
#include <soc/cpu.h>
+#include <soc/mc.h>
#include <soc/nvidia/tegra/apbmisc.h>
#include <string.h>
#include <timer.h>
@@ -77,6 +78,16 @@ static struct cpu_control_ops cntrl_ops = {
.start_cpu = cntrl_start_cpu,
};
+
+static void lock_down_vpr(void)
+{
+ struct tegra_mc_regs *regs = (void *)(uintptr_t)TEGRA_MC_BASE;
+
+ write32(0, &regs->video_protect_bom);
+ write32(0, &regs->video_protect_size_mb);
+ write32(1, &regs->video_protect_reg_ctrl);
+}
+
static void soc_init(device_t dev)
{
struct soc_nvidia_tegra132_config *cfg;
@@ -87,6 +98,9 @@ static void soc_init(device_t dev)
spintable_init((void *)cfg->spintable_addr);
arch_initialize_cpus(dev, &cntrl_ops);
+ /* Lock down VPR */
+ lock_down_vpr();
+
#if IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)
if (vboot_skip_display_init())
printk(BIOS_INFO, "Skipping display init.\n");