summaryrefslogtreecommitdiff
path: root/arch/arm/mach-mvebu/cpu.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-mvebu/cpu.c')
-rw-r--r--arch/arm/mach-mvebu/cpu.c36
1 files changed, 22 insertions, 14 deletions
diff --git a/arch/arm/mach-mvebu/cpu.c b/arch/arm/mach-mvebu/cpu.c
index ea83e21..efd4d04 100644
--- a/arch/arm/mach-mvebu/cpu.c
+++ b/arch/arm/mach-mvebu/cpu.c
@@ -214,32 +214,40 @@ static void setup_usb_phys(void)
int arch_cpu_init(void)
{
-#ifndef CONFIG_SPL_BUILD
+#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_ARMADA_38X)
+ /*
+ * Only with disabled MMU its possible to switch the base
+ * register address on Armada 38x. Without this the SDRAM
+ * located at >= 0x4000.0000 is also not accessible, as its
+ * still locked to cache.
+ */
+ mmu_disable();
+#endif
+
+ /* Linux expects the internal registers to be at 0xf1000000 */
+ writel(SOC_REGS_PHY_BASE, INTREG_BASE_ADDR_REG);
+ set_cbar(SOC_REGS_PHY_BASE + 0xC000);
+
+#if !defined(CONFIG_SPL_BUILD)
+ /*
+ * From this stage on, the SoC detection is working. As we have
+ * configured the internal register base to the value used
+ * in the macros / defines in the U-Boot header (soc.h).
+ */
if (mvebu_soc_family() == MVEBU_SOC_A38X) {
struct pl310_regs *const pl310 =
(struct pl310_regs *)CONFIG_SYS_PL310_BASE;
/*
- * Only with disabled MMU its possible to switch the base
- * register address on Armada 38x. Without this the SDRAM
- * located at >= 0x4000.0000 is also not accessible, as its
- * still locked to cache.
- *
- * So to fully release / unlock this area from cache, we need
- * to first flush all caches, then disable the MMU and
- * disable the L2 cache.
+ * To fully release / unlock this area from cache, we need
+ * to flush all caches and disable the L2 cache.
*/
icache_disable();
dcache_disable();
- mmu_disable();
clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
}
#endif
- /* Linux expects the internal registers to be at 0xf1000000 */
- writel(SOC_REGS_PHY_BASE, INTREG_BASE_ADDR_REG);
- set_cbar(SOC_REGS_PHY_BASE + 0xC000);
-
/*
* We need to call mvebu_mbus_probe() before calling
* update_sdram_window_sizes() as it disables all previously