diff options
Diffstat (limited to 'src/soc/nvidia/tegra132/addressmap.c')
| -rw-r--r-- | src/soc/nvidia/tegra132/addressmap.c | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/src/soc/nvidia/tegra132/addressmap.c b/src/soc/nvidia/tegra132/addressmap.c index 7f6d7c3d72..7dbab556ea 100644 --- a/src/soc/nvidia/tegra132/addressmap.c +++ b/src/soc/nvidia/tegra132/addressmap.c @@ -102,7 +102,7 @@ void carveout_range(int id, uintptr_t *base_mib, size_t *size_mib) } } -void memory_range_by_bits(int bits, uintptr_t *base_mib, uintptr_t *end_mib) +static void memory_in_range(uintptr_t *base_mib, uintptr_t *end_mib) { uintptr_t base; uintptr_t end; @@ -111,11 +111,21 @@ void memory_range_by_bits(int bits, uintptr_t *base_mib, uintptr_t *end_mib) base = CONFIG_SYS_SDRAM_BASE / MiB; end = base + sdram_size_mb(); - if (bits == ADDRESS_SPACE_32_BIT) - end = MIN(end, 4096); + /* Requested limits out of range. */ + if (*end_mib <= base || *base_mib >= end) { + *end_mib = *base_mib = 0; + return; + } + + /* Clip region to passed in limits. */ + if (*end_mib < end) + end = *end_mib; + if (*base_mib > base) + base = *base_mib; for (i = 0; i < CARVEOUT_NUM; i++) { uintptr_t carveout_base; + uintptr_t carveout_end; size_t carveout_size; carveout_range(i, &carveout_base, &carveout_size); @@ -123,8 +133,10 @@ void memory_range_by_bits(int bits, uintptr_t *base_mib, uintptr_t *end_mib) if (carveout_size == 0) continue; + carveout_end = carveout_base + carveout_size; + /* Bypass carveouts out of requested range. */ - if (carveout_base >= end) + if (carveout_base >= end || carveout_end <= base) continue; /* @@ -139,13 +151,27 @@ void memory_range_by_bits(int bits, uintptr_t *base_mib, uintptr_t *end_mib) *end_mib = end; } +void memory_in_range_below_4gb(uintptr_t *base_mib, uintptr_t *end_mib) +{ + *base_mib = 0; + *end_mib = 4096; + memory_in_range(base_mib, end_mib); +} + +void memory_in_range_above_4gb(uintptr_t *base_mib, uintptr_t *end_mib) +{ + *base_mib = 4096; + *end_mib = ~0UL; + memory_in_range(base_mib, end_mib); +} + uintptr_t framebuffer_attributes(size_t *size_mib) { uintptr_t begin; uintptr_t end; /* Place the framebuffer just below the 32-bit addressable limit. */ - memory_range_by_bits(ADDRESS_SPACE_32_BIT, &begin, &end); + memory_in_range_below_4gb(&begin, &end); /* * Need to take into account that the Trust Zone region is not able to |