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bsps/fdt: Make sure data is cache aligned

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The cache of the fdt blob is flushed after copy. Therefore it should be
aligned.
This commit is contained in:
Christian Mauderer
2020-07-20 07:46:53 +02:00
parent 29a73d876c
commit 02c9eb8567
1 changed files with 5 additions and 3 deletions
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8
bsps/shared/start/bsp-fdt.c
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@@ -29,10 +29,11 @@
#ifdef BSP_FDT_BLOB_READ_ONLY
static const uint32_t
bsp_fdt_blob[BSP_FDT_BLOB_SIZE_MAX / sizeof(uint32_t)] = { 0xdeadbeef };
bsp_fdt_blob[BSP_FDT_BLOB_SIZE_MAX / sizeof(uint32_t)] CPU_STRUCTURE_ALIGNMENT =
{ 0xdeadbeef };
#else
static uint32_t
bsp_fdt_blob[BSP_FDT_BLOB_SIZE_MAX / sizeof(uint32_t)];
bsp_fdt_blob[BSP_FDT_BLOB_SIZE_MAX / sizeof(uint32_t)] CPU_STRUCTURE_ALIGNMENT;
#endif
void bsp_fdt_copy(const void *src)
@@ -48,6 +49,7 @@ void bsp_fdt_copy(const void *src)
if (s != d) {
size_t m = MIN(sizeof(bsp_fdt_blob), fdt_totalsize(src));
size_t aligned_size = roundup2(m, CPU_CACHE_LINE_BYTES);
size_t n = (m + sizeof(*d) - 1) / sizeof(*d);
size_t i;
@@ -55,7 +57,7 @@ void bsp_fdt_copy(const void *src)
d[i] = s[i];
}
rtems_cache_flush_multiple_data_lines(d, m);
rtems_cache_flush_multiple_data_lines(d, aligned_size);
}
}