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| author | Thierry Reding <treding@nvidia.com> | 2015-07-22 17:10:11 -0600 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2015-07-28 10:30:17 -0700 |
| commit | 8b19dff579759719b83a3dcbeefecd774077dc08 (patch) | |
| tree | 6139678865af04fad071b98fcc5ea1bbc514cd4c /arch/arm/cpu | |
| parent | 502a2aff7637d6522f50839b4d9ac253fcb1ea6e (diff) | |
| download | u-boot-imx-8b19dff579759719b83a3dcbeefecd774077dc08.zip u-boot-imx-8b19dff579759719b83a3dcbeefecd774077dc08.tar.gz u-boot-imx-8b19dff579759719b83a3dcbeefecd774077dc08.tar.bz2 | |
armv8/cache: Fix page table creation
While generating the page tables, a running integer index is shifted by
SECTION_SHIFT (29) and causes overflow for any integer bigger than 7.
The page tables therefore alias to the same 8 sections and cause U-Boot
to hang once the MMU is enabled.
Fix this by making the index a 64-bit unsigned integer and so avoid the
overflow.
swarren notes: currently "i" ranges from 0..8191 on all ARM64 boards, and
"j" varies depending on RAM size; from 4 to 11 for a board with 4GB at
physical address 2GB, as some Tegra boards have.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/armv8/cache_v8.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c index c5ec529..254a629 100644 --- a/arch/arm/cpu/armv8/cache_v8.c +++ b/arch/arm/cpu/armv8/cache_v8.c @@ -25,9 +25,9 @@ void set_pgtable_section(u64 *page_table, u64 index, u64 section, /* to activate the MMU we need to set up virtual memory */ static void mmu_setup(void) { - int i, j, el; bd_t *bd = gd->bd; - u64 *page_table = (u64 *)gd->arch.tlb_addr; + u64 *page_table = (u64 *)gd->arch.tlb_addr, i, j; + int el; /* Setup an identity-mapping for all spaces */ for (i = 0; i < (PGTABLE_SIZE >> 3); i++) { |