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-rw-r--r--arch/arm/mach-layerscape/boot.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/mach-layerscape/boot.c b/arch/arm/mach-layerscape/boot.c
new file mode 100644
index 0000000..c804977
--- /dev/null
+++ b/arch/arm/mach-layerscape/boot.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <common.h>
+#include <init.h>
+#include <bootsource.h>
+#include <mach/layerscape.h>
+#include <soc/fsl/immap_lsch2.h>
+
+enum bootsource ls1046_bootsource_get(void)
+{
+ void __iomem *dcfg = IOMEM(LSCH2_DCFG_ADDR);
+ uint32_t rcw_src;
+
+ rcw_src = in_be32(dcfg) >> 23;
+
+ if (rcw_src == 0x40)
+ return BOOTSOURCE_MMC;
+ if ((rcw_src & 0x1fe) == 0x44)
+ return BOOTSOURCE_SPI_NOR;
+ if ((rcw_src & 0x1f0) == 0x10)
+ /* 8bit NOR Flash */
+ return BOOTSOURCE_NOR;
+ if ((rcw_src & 0x1f0) == 0x20)
+ /* 16bit NOR Flash */
+ return BOOTSOURCE_NOR;
+
+ return BOOTSOURCE_UNKNOWN;
+}
+
+static int ls1046a_bootsource_init(void)
+{
+ if (!of_machine_is_compatible("fsl,ls1046a"))
+ return 0;
+
+ bootsource_set(ls1046_bootsource_get());
+
+ return 0;
+}
+coredevice_initcall(ls1046a_bootsource_init); \ No newline at end of file