diff options
| -rw-r--r-- | src/soc/nvidia/tegra210/Kconfig | 13 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra210/Makefile.inc | 22 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra210/include/soc/mmu_operations.h | 3 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra210/mmu_operations.c | 2 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra210/secmon.c | 2 |
5 files changed, 37 insertions, 5 deletions
diff --git a/src/soc/nvidia/tegra210/Kconfig b/src/soc/nvidia/tegra210/Kconfig index 7aa932aa08..7aff588f41 100644 --- a/src/soc/nvidia/tegra210/Kconfig +++ b/src/soc/nvidia/tegra210/Kconfig @@ -102,6 +102,19 @@ config TRUSTZONE_CARVEOUT_SIZE_MB help Size of Trust Zone area in MiB to reserve in memory map. +config TTB_SIZE_MB + hex "Size of TTB" + default 0x4 + help + Maximum size of Translation Table Buffer in MiB. + +config SEC_COMPONENT_SIZE_MB + hex "Size of resident EL3 components" + default 0x10 + help + Maximum size of resident EL3 components in MiB including BL31 and + Secure OS. + # Default to 700MHz. This value is based on nv bootloader setting. config PLLX_KHZ int diff --git a/src/soc/nvidia/tegra210/Makefile.inc b/src/soc/nvidia/tegra210/Makefile.inc index 98e752c1a3..3b2dc7c5b1 100644 --- a/src/soc/nvidia/tegra210/Makefile.inc +++ b/src/soc/nvidia/tegra210/Makefile.inc @@ -146,6 +146,28 @@ $(objcbfs)/bootblock.bin: $(objcbfs)/bootblock.raw.bin $(BCT_BIN) @printf " CBOOTIMAGE $(subst $(obj)/,,$(@))\n" $(CBOOTIMAGE) $(CBOOTIMAGE_OPTS) $(BCT_WRAPPER) $@ +# We need to ensure that TZ memory has enough space to hold TTB and resident EL3 +# components (including BL31 and Secure OS) +ttb_size=$(shell printf "%d" $(CONFIG_TTB_SIZE_MB)) +sec_size=$(shell printf "%d" $(CONFIG_SEC_COMPONENT_SIZE_MB)) +req_tz_size=$(shell expr $(ttb_size) + $(sec_size)) + +tz_size=$(shell printf "%d" $(CONFIG_TRUSTZONE_CARVEOUT_SIZE_MB)) + +ifeq ($(shell test $(tz_size) -lt $(req_tz_size) && echo 1), 1) + $(error "TRUSTZONE_CARVEOUT_SIZE_MB should be atleast as big as TTB_SIZE_MB + SEC_COMPONENT_SIZE_MB") +endif + +# BL31 component is placed towards the end of 32-bit address space. This assumes +# that TrustZone memory is placed at the end of 32-bit address space. Within the +# TZ memory, we place TTB at the beginning and then remaining space can be used +# up by BL31 and secure OS. Calculate TZDRAM_BASE i.e. base of BL31 component +# by: +# 0x1000 = end of 32-bit address space in MiB +# 0x1000 - $(CONFIG_TRUSTZONE_CARVEOUT_SIZE_MB) = start of TZ memory in MiB +# 0x1000 - $(CONFIG_TRUSTZONE_CARVEOUT_SIZE_MB) + $(CONFIG_TTB_SIZE_MB) +# = skip TTB buffer and get base address of BL31 +BL31_MAKEARGS += TZDRAM_BASE=$$(((0x1000 - $(CONFIG_TRUSTZONE_CARVEOUT_SIZE_MB) + $(CONFIG_TTB_SIZE_MB)) << 20)) BL31_MAKEARGS += PLAT=tegra TARGET_SOC=t210 # MTC fw diff --git a/src/soc/nvidia/tegra210/include/soc/mmu_operations.h b/src/soc/nvidia/tegra210/include/soc/mmu_operations.h index 6a81e7c321..a6e42aabe5 100644 --- a/src/soc/nvidia/tegra210/include/soc/mmu_operations.h +++ b/src/soc/nvidia/tegra210/include/soc/mmu_operations.h @@ -22,7 +22,4 @@ void tegra210_mmu_init(void); -/* Default ttb size of 4MiB */ -#define TTB_SIZE 0x4 - #endif //__SOC_NVIDIA_TEGRA210_MMU_OPERATIONS_H__ diff --git a/src/soc/nvidia/tegra210/mmu_operations.c b/src/soc/nvidia/tegra210/mmu_operations.c index 2ee6b80ac4..66a93e1878 100644 --- a/src/soc/nvidia/tegra210/mmu_operations.c +++ b/src/soc/nvidia/tegra210/mmu_operations.c @@ -77,7 +77,7 @@ void tegra210_mmu_init(void) /* Place page tables at the base of the trust zone region. */ carveout_range(CARVEOUT_TZ, &tz_base_mib, &tz_size_mib); tz_base_mib *= MiB; - ttb_size_mib = TTB_SIZE * MiB; + ttb_size_mib = CONFIG_TTB_SIZE_MB * MiB; mmu_init(map, (void *)tz_base_mib, ttb_size_mib); mmu_enable(); } diff --git a/src/soc/nvidia/tegra210/secmon.c b/src/soc/nvidia/tegra210/secmon.c index 66ebed2ea7..c0936074e9 100644 --- a/src/soc/nvidia/tegra210/secmon.c +++ b/src/soc/nvidia/tegra210/secmon.c @@ -43,7 +43,7 @@ void soc_get_secmon_base_size(uint64_t *base, size_t *size) soc_get_secure_mem(&tz_base, &tz_size); - ttb_size = TTB_SIZE * MiB; + ttb_size = CONFIG_TTB_SIZE_MB * MiB; *base = tz_base + ttb_size; *size = tz_size - ttb_size; |