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-rw-r--r--arch/arm/boards/rockchip-rk3568-bpi-r2pro/lowlevel.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/arm/boards/rockchip-rk3568-bpi-r2pro/lowlevel.c b/arch/arm/boards/rockchip-rk3568-bpi-r2pro/lowlevel.c
new file mode 100644
index 0000000000..9f039c6048
--- /dev/null
+++ b/arch/arm/boards/rockchip-rk3568-bpi-r2pro/lowlevel.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <common.h>
+#include <linux/sizes.h>
+#include <asm/barebox-arm-head.h>
+#include <asm/barebox-arm.h>
+#include <mach/hardware.h>
+#include <mach/atf.h>
+#include <debug_ll.h>
+#include <mach/rockchip.h>
+
+extern char __dtb_rk3568_bpi_r2_pro_start[];
+
+static noinline void rk3568_start(void)
+{
+ void *fdt;
+
+ /*
+ * Enable vccio4 1.8V and vccio6 1.8V
+ * Needed for GMAC to work.
+ */
+ writel(RK_SETBITS(0x50), 0xfdc20140);
+
+ fdt = __dtb_rk3568_bpi_r2_pro_start;
+
+ if (current_el() == 3) {
+ rk3568_lowlevel_init();
+ rk3568_atf_load_bl31(fdt);
+ /* not reached */
+ }
+
+ barebox_arm_entry(RK3568_DRAM_BOTTOM, 0x80000000 - RK3568_DRAM_BOTTOM, fdt);
+}
+
+ENTRY_FUNCTION(start_rk3568_bpi_r2pro, r0, r1, r2)
+{
+ /*
+ * Image execution starts at 0x0, but this is used for ATF and
+ * OP-TEE later, so move away from here.
+ */
+ if (current_el() == 3)
+ relocate_to_adr_full(RK3568_BAREBOX_LOAD_ADDRESS);
+ else
+ relocate_to_current_adr();
+
+ setup_c();
+
+ rk3568_start();
+}