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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>
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1 changed files with 2 additions and 2 deletions
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@ -25,9 +25,9 @@ void set_pgtable_section(u64 *page_table, u64 index, u64 section,
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/* to activate the MMU we need to set up virtual memory */
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static void mmu_setup(void)
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{
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int i, j, el;
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bd_t *bd = gd->bd;
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u64 *page_table = (u64 *)gd->arch.tlb_addr;
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u64 *page_table = (u64 *)gd->arch.tlb_addr, i, j;
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int el;
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/* Setup an identity-mapping for all spaces */
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for (i = 0; i < (PGTABLE_SIZE >> 3); i++) {
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