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t132: Increase TrustZone Carveout Region size

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Increase TZ carveout region size to 4MiB. TTB lives in the first 1MiB of the
trust zone. Rest of the TZ memory can be used by el3 monitor.

BUG=chrome-os-partner:31615
BRANCH=None
TEST=Compiles successfully and boots to kernel

Change-Id: I1f25b7b119037cba7055a1bd61997f020a0b1010
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://chromium-review.googlesource.com/214370
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Commit-Queue: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Furquan Shaikh 2014-08-26 15:26:13 -07:00 • committed by chrome-internal-fetch
commit de0f3f8016
3 changed files with 7 additions and 3 deletions
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2
src/soc/nvidia/tegra132/Kconfig
View file

@ -143,7 +143,7 @@ config MTS_DIRECTORY
config TRUSTZONE_CARVEOUT_SIZE_MB
hex "Size of Trust Zone region"
default 0x1
default 0x4
help
Size of Trust Zone area in MiB to reserve in memory map.

5
src/soc/nvidia/tegra132/mmu_operations.c
View file

@ -84,6 +84,7 @@ void tegra132_mmu_init(void)
{
uintptr_t tz_base_mib;
size_t tz_size_mib;
size_t ttb_size_mib;
struct memranges *map = &t132_mmap_ranges;
tegra132_memrange_init(map);
@ -92,7 +93,7 @@ void tegra132_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;
tz_size_mib *= MiB;
mmu_init(map, (void *)tz_base_mib, tz_size_mib);
ttb_size_mib = TTB_SIZE * MiB;
mmu_init(map, (void *)tz_base_mib, ttb_size_mib);
mmu_enable(tz_base_mib);
}

3
src/soc/nvidia/tegra132/mmu_operations.h
View file

@ -22,4 +22,7 @@
void tegra132_mmu_init(void);
/* Default ttb size of 1MiB */
#define TTB_SIZE 0x1
#endif //__SOC_NVIDIA_TEGRA132_MMU_OPERATIONS_H__