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-rw-r--r--arch/arm/boards/radxa-rock3/lowlevel.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/boards/radxa-rock3/lowlevel.c b/arch/arm/boards/radxa-rock3/lowlevel.c
new file mode 100644
index 0000000000..ec407404b9
--- /dev/null
+++ b/arch/arm/boards/radxa-rock3/lowlevel.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <common.h>
+#include <asm/barebox-arm.h>
+#include <mach/rockchip/hardware.h>
+#include <mach/rockchip/atf.h>
+#include <debug_ll.h>
+
+extern char __dtb_rk3568_rock_3a_start[];
+
+ENTRY_FUNCTION(start_rock3a, r0, r1, r2)
+{
+ /*
+ * Enable vccio4 1.8V and vccio6 1.8V
+ * Needed for GMAC to work.
+ * FIXME: This is done by the io-domain driver as well, but there
+ * currently is no mechanism to make sure the driver gets probed
+ * before its consumers. Remove this setup once this issue is
+ * resolved.
+ */
+ writel(RK_SETBITS(0x50), 0xfdc20140);
+
+ putc_ll('>');
+
+ if (current_el() == 3)
+ relocate_to_adr_full(RK3568_BAREBOX_LOAD_ADDRESS);
+ else
+ relocate_to_current_adr();
+
+ setup_c();
+
+ rk3568_barebox_entry(__dtb_rk3568_rock_3a_start);
+}