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>

8 files changed, 117 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h
index 704d683e83..ef775cf606 100644
--- a/arch/arm/include/asm/arch-ls102xa/config.h
+++ b/arch/arm/include/asm/arch-ls102xa/config.h
@@ -15,6 +15,8 @@
 #define CONFIG_SYS_IMMR				0x01000000
 #define CONFIG_SYS_DCSRBAR			0x20000000
 
+#define CONFIG_SYS_DCSR_DCFG_ADDR	(CONFIG_SYS_DCSRBAR + 0x00220000)
+
 #define CONFIG_SYS_FSL_DDR_ADDR			(CONFIG_SYS_IMMR + 0x00080000)
 #define CONFIG_SYS_CCI400_ADDR			(CONFIG_SYS_IMMR + 0x00180000)
 #define CONFIG_SYS_IFC_ADDR			(CONFIG_SYS_IMMR + 0x00530000)
diff --git a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
index 98b268dffe..5abc3a196e 100644
--- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
+++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
@@ -29,6 +29,11 @@
 #define ARCH_TIMER_CTRL_ENABLE		(1 << 0)
 #define SYS_COUNTER_CTRL_ENABLE		(1 << 24)
 
+#define DCFG_CCSR_PORSR1_RCW_MASK	0xff800000
+#define DCFG_CCSR_PORSR1_RCW_SRC_I2C	0x24800000
+
+#define DCFG_DCSR_PORCR1		0
+
 struct sys_info {
 	unsigned long freq_processor[CONFIG_MAX_CPUS];
 	unsigned long freq_systembus;
diff --git a/board/freescale/ls1021aqds/MAINTAINERS b/board/freescale/ls1021aqds/MAINTAINERS
index 7a704cf25f..638833dc41 100644
--- a/board/freescale/ls1021aqds/MAINTAINERS
+++ b/board/freescale/ls1021aqds/MAINTAINERS
@@ -8,3 +8,4 @@ F:	configs/ls1021aqds_ddr4_nor_defconfig
 F:	configs/ls1021aqds_nor_SECURE_BOOT_defconfig
 F:	configs/ls1021aqds_sdcard_defconfig
 F:	configs/ls1021aqds_qspi_defconfig
+F:	configs/ls1021aqds_nand_defconfig
diff --git a/board/freescale/ls1021aqds/ls1021aqds.c b/board/freescale/ls1021aqds/ls1021aqds.c
index 9fcd129883..691e828c02 100644
--- a/board/freescale/ls1021aqds/ls1021aqds.c
+++ b/board/freescale/ls1021aqds/ls1021aqds.c
@@ -187,6 +187,22 @@ void board_init_f(ulong dummy)
 {
 	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;
 
diff --git a/board/freescale/ls1021aqds/ls102xa_rcw_nand.cfg b/board/freescale/ls1021aqds/ls102xa_rcw_nand.cfg
new file mode 100644
index 0000000000..222c71dcb6
--- /dev/null
+++ b/board/freescale/ls1021aqds/ls102xa_rcw_nand.cfg
@@ -0,0 +1,7 @@
+#PBL preamble and RCW header
+aa55aa55 01ee0100
+# serdes protocol
+0608000a 00000000 00000000 00000000
+60000000 00407900 e0106a00 21046000
+00000000 00000000 00000000 00038000
+00000000 001b7200 00000000 00000000
diff --git a/configs/ls1021aqds_nand_defconfig b/configs/ls1021aqds_nand_defconfig
new file mode 100644
index 0000000000..dad5274ae8
--- /dev/null
+++ b/configs/ls1021aqds_nand_defconfig
@@ -0,0 +1,4 @@
+CONFIG_SPL=y
+CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT_PBL,SPL_FSL_PBL,NAND_BOOT"
++S:CONFIG_ARM=y
++S:CONFIG_TARGET_LS1021AQDS=y
diff --git a/drivers/mtd/nand/fsl_ifc_spl.c b/drivers/mtd/nand/fsl_ifc_spl.c
index e336cb1c94..fb827c5e74 100644
--- a/drivers/mtd/nand/fsl_ifc_spl.c
+++ b/drivers/mtd/nand/fsl_ifc_spl.c
@@ -254,3 +254,13 @@ void nand_boot(void)
 	uboot = (void *)CONFIG_SYS_NAND_U_BOOT_START;
 	uboot();
 }
+
+#ifndef CONFIG_SPL_NAND_INIT
+void nand_init(void)
+{
+}
+
+void nand_deselect(void)
+{
+}
+#endif
diff --git a/include/configs/ls1021aqds.h b/include/configs/ls1021aqds.h
index 6f8b43f351..536d9f3a58 100644
--- a/include/configs/ls1021aqds.h
+++ b/include/configs/ls1021aqds.h
@@ -84,6 +84,39 @@ unsigned long get_board_ddr_clk(void);
 #define CONFIG_SYS_NO_FLASH
 #endif
 
+#ifdef CONFIG_NAND_BOOT
+#define CONFIG_SYS_FSL_PBL_RCW	board/freescale/ls1021aqds/ls102xa_rcw_nand.cfg
+#define CONFIG_SPL_FRAMEWORK
+#define CONFIG_SPL_LDSCRIPT	"arch/$(ARCH)/cpu/u-boot-spl.lds"
+#define CONFIG_SPL_LIBCOMMON_SUPPORT
+#define CONFIG_SPL_LIBGENERIC_SUPPORT
+#define CONFIG_SPL_ENV_SUPPORT
+#define CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT
+#define CONFIG_SPL_I2C_SUPPORT
+#define CONFIG_SPL_WATCHDOG_SUPPORT
+#define CONFIG_SPL_SERIAL_SUPPORT
+#define CONFIG_SPL_NAND_SUPPORT
+#define CONFIG_SPL_DRIVERS_MISC_SUPPORT
+
+#define CONFIG_SPL_TEXT_BASE		0x10000000
+#define CONFIG_SPL_MAX_SIZE		0x1a000
+#define CONFIG_SPL_STACK		0x1001d000
+#define CONFIG_SPL_PAD_TO		0x1c000
+#define CONFIG_SYS_TEXT_BASE		0x82000000
+
+#define CONFIG_SYS_NAND_U_BOOT_SIZE	(400 << 10)
+#define CONFIG_SYS_NAND_U_BOOT_OFFS	CONFIG_SPL_PAD_TO
+#define CONFIG_SYS_NAND_PAGE_SIZE	2048
+#define CONFIG_SYS_NAND_U_BOOT_DST	CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
+
+#define CONFIG_SYS_SPL_MALLOC_START	0x80200000
+#define CONFIG_SYS_SPL_MALLOC_SIZE	0x100000
+#define CONFIG_SPL_BSS_START_ADDR	0x80100000
+#define CONFIG_SPL_BSS_MAX_SIZE		0x80000
+#define CONFIG_SYS_MONITOR_LEN		0x80000
+#endif
+
 #ifndef CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_TEXT_BASE		0x67f80000
 #endif
@@ -261,6 +294,40 @@ unsigned long get_board_ddr_clk(void);
 #define CONFIG_SYS_FPGA_FTIM3		0x0
 #endif
 
+#if defined(CONFIG_NAND_BOOT)
+#define CONFIG_SYS_CSPR0_EXT		CONFIG_SYS_NAND_CSPR_EXT
+#define CONFIG_SYS_CSPR0		CONFIG_SYS_NAND_CSPR
+#define CONFIG_SYS_AMASK0		CONFIG_SYS_NAND_AMASK
+#define CONFIG_SYS_CSOR0		CONFIG_SYS_NAND_CSOR
+#define CONFIG_SYS_CS0_FTIM0		CONFIG_SYS_NAND_FTIM0
+#define CONFIG_SYS_CS0_FTIM1		CONFIG_SYS_NAND_FTIM1
+#define CONFIG_SYS_CS0_FTIM2		CONFIG_SYS_NAND_FTIM2
+#define CONFIG_SYS_CS0_FTIM3		CONFIG_SYS_NAND_FTIM3
+#define CONFIG_SYS_CSPR1_EXT		CONFIG_SYS_NOR0_CSPR_EXT
+#define CONFIG_SYS_CSPR1		CONFIG_SYS_NOR0_CSPR
+#define CONFIG_SYS_AMASK1		CONFIG_SYS_NOR_AMASK
+#define CONFIG_SYS_CSOR1		CONFIG_SYS_NOR_CSOR
+#define CONFIG_SYS_CS1_FTIM0		CONFIG_SYS_NOR_FTIM0
+#define CONFIG_SYS_CS1_FTIM1		CONFIG_SYS_NOR_FTIM1
+#define CONFIG_SYS_CS1_FTIM2		CONFIG_SYS_NOR_FTIM2
+#define CONFIG_SYS_CS1_FTIM3		CONFIG_SYS_NOR_FTIM3
+#define CONFIG_SYS_CSPR2_EXT		CONFIG_SYS_NOR1_CSPR_EXT
+#define CONFIG_SYS_CSPR2		CONFIG_SYS_NOR1_CSPR
+#define CONFIG_SYS_AMASK2		CONFIG_SYS_NOR_AMASK
+#define CONFIG_SYS_CSOR2		CONFIG_SYS_NOR_CSOR
+#define CONFIG_SYS_CS2_FTIM0		CONFIG_SYS_NOR_FTIM0
+#define CONFIG_SYS_CS2_FTIM1		CONFIG_SYS_NOR_FTIM1
+#define CONFIG_SYS_CS2_FTIM2		CONFIG_SYS_NOR_FTIM2
+#define CONFIG_SYS_CS2_FTIM3		CONFIG_SYS_NOR_FTIM3
+#define CONFIG_SYS_CSPR3_EXT		CONFIG_SYS_FPGA_CSPR_EXT
+#define CONFIG_SYS_CSPR3		CONFIG_SYS_FPGA_CSPR
+#define CONFIG_SYS_AMASK3		CONFIG_SYS_FPGA_AMASK
+#define CONFIG_SYS_CSOR3		CONFIG_SYS_FPGA_CSOR
+#define CONFIG_SYS_CS3_FTIM0		CONFIG_SYS_FPGA_FTIM0
+#define CONFIG_SYS_CS3_FTIM1		CONFIG_SYS_FPGA_FTIM1
+#define CONFIG_SYS_CS3_FTIM2		CONFIG_SYS_FPGA_FTIM2
+#define CONFIG_SYS_CS3_FTIM3		CONFIG_SYS_FPGA_FTIM3
+#else
 #define CONFIG_SYS_CSPR0_EXT		CONFIG_SYS_NOR0_CSPR_EXT
 #define CONFIG_SYS_CSPR0		CONFIG_SYS_NOR0_CSPR
 #define CONFIG_SYS_AMASK0		CONFIG_SYS_NOR_AMASK
@@ -293,6 +360,7 @@ unsigned long get_board_ddr_clk(void);
 #define CONFIG_SYS_CS3_FTIM1		CONFIG_SYS_FPGA_FTIM1
 #define CONFIG_SYS_CS3_FTIM2		CONFIG_SYS_FPGA_FTIM2
 #define CONFIG_SYS_CS3_FTIM3		CONFIG_SYS_FPGA_FTIM3
+#endif
 
 /*
  * Serial Port
@@ -492,6 +560,10 @@ unsigned long get_board_ddr_clk(void);
 #define CONFIG_ENV_SIZE			0x2000          /* 8KB */
 #define CONFIG_ENV_OFFSET		0x100000        /* 1MB */
 #define CONFIG_ENV_SECT_SIZE		0x10000
+#elif defined(CONFIG_NAND_BOOT)
+#define CONFIG_ENV_IS_IN_NAND
+#define CONFIG_ENV_SIZE			0x2000
+#define CONFIG_ENV_OFFSET		(10 * CONFIG_SYS_NAND_BLOCK_SIZE)
 #else
 #define CONFIG_ENV_IS_IN_FLASH
 #define CONFIG_ENV_ADDR		(CONFIG_SYS_MONITOR_BASE - CONFIG_ENV_SECT_SIZE)