MX31: Add NAND SPL boot support to i.MX31 PDK board.

Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>

2 files changed, 94 insertions, 3 deletions

diff --git a/include/asm-arm/arch-mx31/mx31-regs.h b/include/asm-arm/arch-mx31/mx31-regs.h
index 76f4d53..51b02a2 100644
--- a/include/asm-arm/arch-mx31/mx31-regs.h
+++ b/include/asm-arm/arch-mx31/mx31-regs.h
@@ -61,6 +61,29 @@
 #define PLL_MFI(x)		(((x) & 0xf) << 10)
 #define PLL_MFN(x)		(((x) & 0x3ff) << 0)
 
+#define WEIM_ESDCTL0	0xB8001000
+#define WEIM_ESDCFG0	0xB8001004
+#define WEIM_ESDCTL1	0xB8001008
+#define WEIM_ESDCFG1	0xB800100C
+#define WEIM_ESDMISC	0xB8001010
+
+#define ESDCTL_SDE			(1 << 31)
+#define ESDCTL_CMD_RW			(0 << 28)
+#define ESDCTL_CMD_PRECHARGE		(1 << 28)
+#define ESDCTL_CMD_AUTOREFRESH		(2 << 28)
+#define ESDCTL_CMD_LOADMODEREG		(3 << 28)
+#define ESDCTL_CMD_MANUALREFRESH	(4 << 28)
+#define ESDCTL_ROW_13			(2 << 24)
+#define ESDCTL_ROW(x)			((x) << 24)
+#define ESDCTL_COL_9			(1 << 20)
+#define ESDCTL_COL(x)			((x) << 20)
+#define ESDCTL_DSIZ(x)			((x) << 16)
+#define ESDCTL_SREFR(x)			((x) << 13)
+#define ESDCTL_PWDT(x)			((x) << 10)
+#define ESDCTL_FP(x)			((x) << 8)
+#define ESDCTL_BL(x)			((x) << 7)
+#define ESDCTL_PRCT(x)			((x) << 0)
+
 #define WEIM_BASE	0xb8002000
 #define CSCR_U(x)	(WEIM_BASE + (x) * 0x10)
 #define CSCR_L(x)	(WEIM_BASE + 4 + (x) * 0x10)
@@ -181,6 +204,37 @@
 #define MUX_CSPI2_MOSI__I2C2_SCL IOMUX_MODE(MUX_CTL_CSPI2_MOSI, MUX_CTL_ALT1)
 #define MUX_CSPI2_MISO__I2C2_SDA IOMUX_MODE(MUX_CTL_CSPI2_MISO, MUX_CTL_ALT1)
 
+/* PAD control registers for SDR/DDR */
+#define IOMUXC_SW_PAD_CTL_SDCKE1_SDCLK_SDCLK_B	(IOMUXC_BASE + 0x26C)
+#define IOMUXC_SW_PAD_CTL_CAS_SDWE_SDCKE0	(IOMUXC_BASE + 0x270)
+#define IOMUXC_SW_PAD_CTL_BCLK_RW_RAS		(IOMUXC_BASE + 0x274)
+#define IOMUXC_SW_PAD_CTL_CS5_ECB_LBA		(IOMUXC_BASE + 0x278)
+#define IOMUXC_SW_PAD_CTL_CS2_CS3_CS4		(IOMUXC_BASE + 0x27C)
+#define IOMUXC_SW_PAD_CTL_OE_CS0_CS1		(IOMUXC_BASE + 0x280)
+#define IOMUXC_SW_PAD_CTL_DQM3_EB0_EB1		(IOMUXC_BASE + 0x284)
+#define IOMUXC_SW_PAD_CTL_DQM0_DQM1_DQM2	(IOMUXC_BASE + 0x288)
+#define IOMUXC_SW_PAD_CTL_SD29_SD30_SD31	(IOMUXC_BASE + 0x28C)
+#define IOMUXC_SW_PAD_CTL_SD26_SD27_SD28	(IOMUXC_BASE + 0x290)
+#define IOMUXC_SW_PAD_CTL_SD23_SD24_SD25	(IOMUXC_BASE + 0x294)
+#define IOMUXC_SW_PAD_CTL_SD20_SD21_SD22	(IOMUXC_BASE + 0x298)
+#define IOMUXC_SW_PAD_CTL_SD17_SD18_SD19	(IOMUXC_BASE + 0x29C)
+#define IOMUXC_SW_PAD_CTL_SD14_SD15_SD16	(IOMUXC_BASE + 0x2A0)
+#define IOMUXC_SW_PAD_CTL_SD11_SD12_SD13	(IOMUXC_BASE + 0x2A4)
+#define IOMUXC_SW_PAD_CTL_SD8_SD9_SD10		(IOMUXC_BASE + 0x2A8)
+#define IOMUXC_SW_PAD_CTL_SD5_SD6_SD7		(IOMUXC_BASE + 0x2AC)
+#define IOMUXC_SW_PAD_CTL_SD2_SD3_SD4		(IOMUXC_BASE + 0x2B0)
+#define IOMUXC_SW_PAD_CTL_SDBA0_SD0_SD1		(IOMUXC_BASE + 0x2B4)
+#define IOMUXC_SW_PAD_CTL_A24_A25_SDBA1		(IOMUXC_BASE + 0x2B8)
+#define IOMUXC_SW_PAD_CTL_A21_A22_A23		(IOMUXC_BASE + 0x2BC)
+#define IOMUXC_SW_PAD_CTL_A18_A19_A20		(IOMUXC_BASE + 0x2C0)
+#define IOMUXC_SW_PAD_CTL_A15_A16_A17		(IOMUXC_BASE + 0x2C4)
+#define IOMUXC_SW_PAD_CTL_A12_A13_A14		(IOMUXC_BASE + 0x2C8)
+#define IOMUXC_SW_PAD_CTL_A10_MA10_A11		(IOMUXC_BASE + 0x2CC)
+#define IOMUXC_SW_PAD_CTL_A7_A8_A9		(IOMUXC_BASE + 0x2D0)
+#define IOMUXC_SW_PAD_CTL_A4_A5_A6		(IOMUXC_BASE + 0x2D4)
+#define IOMUXC_SW_PAD_CTL_A1_A2_A3		(IOMUXC_BASE + 0x2D8)
+#define IOMUXC_SW_PAD_CTL_VPG0_VPG1_A0		(IOMUXC_BASE + 0x2DC)
+
 /*
  * Memory regions and CS
  */
diff --git a/include/configs/mx31pdk.h b/include/configs/mx31pdk.h
index 7167e9d..a4862c6 100644
--- a/include/configs/mx31pdk.h
+++ b/include/configs/mx31pdk.h
@@ -43,10 +43,10 @@
 #define CONFIG_SETUP_MEMORY_TAGS	1
 #define CONFIG_INITRD_TAG		1
 
-/* No support for NAND boot for i.MX31 PDK yet, so we rely on some other
- * program to initialize the SDRAM.
- */
+#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
 #define CONFIG_SKIP_LOWLEVEL_INIT
+#define CONFIG_SKIP_RELOCATE_UBOOT
+#endif
 
 /*
  * Size of malloc() pool
@@ -159,4 +159,41 @@
 
 #define CONFIG_ENV_SIZE		(128 * 1024)
 
+/* NAND configuration for the NAND_SPL */
+
+/* Start copying real U-boot from the second page */
+#define CONFIG_SYS_NAND_U_BOOT_OFFS	0x800
+#define CONFIG_SYS_NAND_U_BOOT_SIZE	0x30000
+/* Load U-Boot to this address */
+#define CONFIG_SYS_NAND_U_BOOT_DST	0x87f00000
+#define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_NAND_U_BOOT_DST
+
+#define CONFIG_SYS_NAND_PAGE_SIZE	0x800
+#define CONFIG_SYS_NAND_BLOCK_SIZE	(128 * 1024)
+#define CONFIG_SYS_NAND_PAGE_COUNT	64
+#define CONFIG_SYS_NAND_SIZE		(256 * 1024 * 1024)
+#define CONFIG_SYS_NAND_BAD_BLOCK_POS	0
+
+
+/* Configuration of lowlevel_init.S (clocks and SDRAM) */
+#define CCM_CCMR_SETUP		0x074B0BF5
+#define CCM_PDR0_SETUP_532MHZ	(PDR0_CSI_PODF(0x1ff) | PDR0_PER_PODF(7) | \
+				 PDR0_HSP_PODF(3) | PDR0_NFC_PODF(5) |     \
+				 PDR0_IPG_PODF(1) | PDR0_MAX_PODF(3) |     \
+				 PDR0_MCU_PODF(0))
+#define CCM_MPCTL_SETUP_532MHZ	(PLL_PD(0) | PLL_MFD(51) | PLL_MFI(10) |   \
+				 PLL_MFN(12))
+
+#define ESDMISC_MDDR_SETUP	0x00000004
+#define ESDMISC_MDDR_RESET_DL	0x0000000c
+#define ESDCFG0_MDDR_SETUP	0x006ac73a
+
+#define ESDCTL_ROW_COL		(ESDCTL_SDE | ESDCTL_ROW(2) | ESDCTL_COL(2))
+#define ESDCTL_SETTINGS		(ESDCTL_ROW_COL | ESDCTL_SREFR(3) | \
+				 ESDCTL_DSIZ(2) | ESDCTL_BL(1))
+#define ESDCTL_PRECHARGE	(ESDCTL_ROW_COL | ESDCTL_CMD_PRECHARGE)
+#define ESDCTL_AUTOREFRESH	(ESDCTL_ROW_COL | ESDCTL_CMD_AUTOREFRESH)
+#define ESDCTL_LOADMODEREG	(ESDCTL_ROW_COL | ESDCTL_CMD_LOADMODEREG)
+#define ESDCTL_RW		ESDCTL_SETTINGS
+
 #endif /* __CONFIG_H */