arm: ls102xa: Add NAND boot support for LS1021AQDS board
This patch adds NAND boot support for LS1021AQDS board. SPL
framework is used. PBL initialize the internal RAM and copy
SPL to it, then SPL initialize DDR using SPD and copy u-boot
from NAND flash to DDR, finally SPL transfer control to u-boot.
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Alison Wang <alison.wang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/ls1021aqds/ls1021aqds.c b/board/freescale/ls1021aqds/ls1021aqds.c
index 9fcd129..691e828 100644
--- a/board/freescale/ls1021aqds/ls1021aqds.c
+++ b/board/freescale/ls1021aqds/ls1021aqds.c
@@ -187,6 +187,22 @@
{
struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR;
+#ifdef CONFIG_NAND_BOOT
+ struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
+ u32 porsr1, pinctl;
+
+ /*
+ * There is LS1 SoC issue where NOR, FPGA are inaccessible during
+ * NAND boot because IFC signals > IFC_AD7 are not enabled.
+ * This workaround changes RCW source to make all signals enabled.
+ */
+ porsr1 = in_be32(&gur->porsr1);
+ pinctl = ((porsr1 & ~(DCFG_CCSR_PORSR1_RCW_MASK)) |
+ DCFG_CCSR_PORSR1_RCW_SRC_I2C);
+ out_be32((unsigned int *)(CONFIG_SYS_DCSR_DCFG_ADDR + DCFG_DCSR_PORCR1),
+ pinctl);
+#endif
+
/* Set global data pointer */
gd = &gdata;