Merge tag 'u-boot-rockchip-20200501' of https://gitlab.denx.de/u-boot/custodians...

[platform/kernel/u-boot.git] / arch / arm / lib / cache-cp15.c

diff --git a/arch/arm/lib/cache-cp15.c b/arch/arm/lib/cache-cp15.c
index f8d2096..f803d6f 100644 (file)
--- a/arch/arm/lib/cache-cp15.c
+++ b/arch/arm/lib/cache-cp15.c
@@ -61,8 +61,11 @@ void mmu_set_region_dcache_behaviour(phys_addr_t start, size_t size,
        unsigned long startpt, stoppt;
        unsigned long upto, end;
 
-       end = ALIGN(start + size, MMU_SECTION_SIZE) >> MMU_SECTION_SHIFT;
+       /* div by 2 before start + size to avoid phys_addr_t overflow */
+       end = ALIGN((start / 2) + (size / 2), MMU_SECTION_SIZE / 2)
+             >> (MMU_SECTION_SHIFT - 1);
        start = start >> MMU_SECTION_SHIFT;
+
 #ifdef CONFIG_ARMV7_LPAE
        debug("%s: start=%pa, size=%zu, option=%llx\n", __func__, &start, size,
              option);
@@ -91,19 +94,16 @@ __weak void dram_bank_mmu_setup(int bank)
        bd_t *bd = gd->bd;
        int     i;
 
+       /* bd->bi_dram is available only after relocation */
+       if ((gd->flags & GD_FLG_RELOC) == 0)
+               return;
+
        debug("%s: bank: %d\n", __func__, bank);
        for (i = bd->bi_dram[bank].start >> MMU_SECTION_SHIFT;
             i < (bd->bi_dram[bank].start >> MMU_SECTION_SHIFT) +
                 (bd->bi_dram[bank].size >> MMU_SECTION_SHIFT);
-            i++) {
-#if defined(CONFIG_SYS_ARM_CACHE_WRITETHROUGH)
-               set_section_dcache(i, DCACHE_WRITETHROUGH);
-#elif defined(CONFIG_SYS_ARM_CACHE_WRITEALLOC)
-               set_section_dcache(i, DCACHE_WRITEALLOC);
-#else
-               set_section_dcache(i, DCACHE_WRITEBACK);
-#endif
-       }
+            i++)
+               set_section_dcache(i, DCACHE_DEFAULT_OPTION);
 }
 
 /* to activate the MMU we need to set up virtual memory: use 1M areas */