diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/nvidia/tegra210/addressmap.c | 23 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra210/include/soc/addressmap.h | 2 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra210/romstage.c | 1 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra210/soc.c | 20 |
4 files changed, 26 insertions, 20 deletions
diff --git a/src/soc/nvidia/tegra210/addressmap.c b/src/soc/nvidia/tegra210/addressmap.c index ddf3f991ef..d177323caa 100644 --- a/src/soc/nvidia/tegra210/addressmap.c +++ b/src/soc/nvidia/tegra210/addressmap.c @@ -91,6 +91,10 @@ void carveout_range(int id, uintptr_t *base_mib, size_t *size_mib) read32(&mc->mts_carveout_size_mb)); break; case CARVEOUT_VPR: + /* + * A 128MB VPR carveout is felt to be sufficient as per syseng. + * Set it up in vpr_region_init, below. + */ carveout_from_regs(base_mib, size_mib, read32(&mc->video_protect_bom), read32(&mc->video_protect_bom_adr_hi), @@ -347,3 +351,22 @@ void tsec_region_init(void) setbits_le32(&mc->security_carveout4_cfg0, MC_SECURITY_CARVEOUT_LOCKED); setbits_le32(&mc->security_carveout5_cfg0, MC_SECURITY_CARVEOUT_LOCKED); } + +void vpr_region_init(void) +{ + struct tegra_mc_regs * const mc = (void *)(uintptr_t)TEGRA_MC_BASE; + uintptr_t vpr_base_mib = 0, end = 4096; + size_t vpr_size_mib = VPR_CARVEOUT_SIZE_MB; + + /* Get memory layout below 4GiB */ + memory_in_range(&vpr_base_mib, &end, CARVEOUT_VPR); + vpr_base_mib = end - vpr_size_mib; + + /* Set the carveout base address and size */ + write32(&mc->video_protect_bom, vpr_base_mib << 20); + write32(&mc->video_protect_bom_adr_hi, 0); + write32(&mc->video_protect_size_mb, vpr_size_mib); + + /* Set the locked bit. This will lock out any other writes! */ + write32(&mc->video_protect_reg_ctrl, MC_VPR_WR_ACCESS_DISABLE); +} diff --git a/src/soc/nvidia/tegra210/include/soc/addressmap.h b/src/soc/nvidia/tegra210/include/soc/addressmap.h index b9bec18a12..322a971c3f 100644 --- a/src/soc/nvidia/tegra210/include/soc/addressmap.h +++ b/src/soc/nvidia/tegra210/include/soc/addressmap.h @@ -107,6 +107,7 @@ enum { #define GPU_CARVEOUT_SIZE_MB 1 #define NVDEC_CARVEOUT_SIZE_MB 1 #define TSEC_CARVEOUT_SIZE_MB 2 +#define VPR_CARVEOUT_SIZE_MB 128 /* Return total size of DRAM memory configured on the platform. */ int sdram_size_mb(void); @@ -148,5 +149,6 @@ void trustzone_region_init(void); void gpu_region_init(void); void nvdec_region_init(void); void tsec_region_init(void); +void vpr_region_init(void); #endif /* __SOC_NVIDIA_TEGRA210_INCLUDE_SOC_ADDRESS_MAP_H__ */ diff --git a/src/soc/nvidia/tegra210/romstage.c b/src/soc/nvidia/tegra210/romstage.c index d8d191bbd1..16ba778fe9 100644 --- a/src/soc/nvidia/tegra210/romstage.c +++ b/src/soc/nvidia/tegra210/romstage.c @@ -71,6 +71,7 @@ void romstage(void) gpu_region_init(); nvdec_region_init(); tsec_region_init(); + vpr_region_init(); /* * When romstage is running it's always on the reboot path -- never a diff --git a/src/soc/nvidia/tegra210/soc.c b/src/soc/nvidia/tegra210/soc.c index 829acb2d73..9e67531b76 100644 --- a/src/soc/nvidia/tegra210/soc.c +++ b/src/soc/nvidia/tegra210/soc.c @@ -82,23 +82,6 @@ static struct cpu_control_ops cntrl_ops = { }; -static void lock_down_vpr(void) -{ - struct tegra_mc_regs *regs = (void *)(uintptr_t)TEGRA_MC_BASE; - - write32(®s->video_protect_bom, 0); - write32(®s->video_protect_size_mb, 0); - - write32(®s->video_protect_gpu_override_0, 1); - /* - * Set both _ACCESS bits so that kernel/secure code - * can reconfig VPR careveout as needed from the TrustZone. - */ - - write32(®s->video_protect_reg_ctrl, - (MC_VPR_WR_ACCESS_DISABLE | MC_VPR_ALLOW_TZ_WR_ACCESS_ENABLE)); -} - static void soc_init(device_t dev) { struct soc_nvidia_tegra210_config *cfg; @@ -109,9 +92,6 @@ 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"); |