sunxi/nand: Add support to the SPL for loading u-boot from internal NAND memory

This commit adds support to the sunxi SPL to load u-boot from the internal
NAND. Note this only adds support to access the boot partitions to load
u-boot, full NAND support to load the kernel, etc. from the nand data
partition will come later.

Signed-off-by: Roy Spliet <r.spliet@ultimaker.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

6 files changed, 34 insertions, 0 deletions

diff --git a/include/configs/sun4i.h b/include/configs/sun4i.h
index ea079eb5f7..a3c9408518 100644
--- a/include/configs/sun4i.h
+++ b/include/configs/sun4i.h
@@ -18,6 +18,7 @@
 #endif
 
 #define CONFIG_SUNXI_USB_PHYS	3
+#define CONFIG_NAND_SUNXI_GPC_PORTS	{16, 17, 18, 19, 20, 21, 22, 24}
 
 /*
  * Include common sunxi configuration where most the settings are
diff --git a/include/configs/sun5i.h b/include/configs/sun5i.h
index d257659903..8e13df58bd 100644
--- a/include/configs/sun5i.h
+++ b/include/configs/sun5i.h
@@ -19,6 +19,9 @@
 
 #define CONFIG_SUNXI_USB_PHYS	2
 
+/* \todo A13 only defines port 19, whereas A10s requires each of these */
+#define CONFIG_NAND_SUNXI_GPC_PORTS	{16, 17, 18, 19}
+
 /*
  * Include common sunxi configuration where most the settings are
  */
diff --git a/include/configs/sun6i.h b/include/configs/sun6i.h
index 2c24bd2312..e1263f69a5 100644
--- a/include/configs/sun6i.h
+++ b/include/configs/sun6i.h
@@ -22,6 +22,8 @@
 
 #define CONFIG_SUNXI_USB_PHYS	3
 
+#define CONFIG_NAND_SUNXI_GPC_PORTS	{24, 25, 26}
+
 /*
  * Include common sunxi configuration where most the settings are
  */
diff --git a/include/configs/sun7i.h b/include/configs/sun7i.h
index 56101a9ffc..3d26ce8d4a 100644
--- a/include/configs/sun7i.h
+++ b/include/configs/sun7i.h
@@ -24,6 +24,8 @@
 #define CONFIG_ARMV7_SECURE_BASE	SUNXI_SRAM_B_BASE
 #define CONFIG_TIMER_CLK_FREQ		24000000
 
+#define CONFIG_NAND_SUNXI_GPC_PORTS	{16, 17, 18, 19, 20, 21, 22, 24}
+
 /*
  * Include common sunxi configuration where most the settings are
  */
diff --git a/include/configs/sun8i.h b/include/configs/sun8i.h
index 7111c635c1..cd3375889e 100644
--- a/include/configs/sun8i.h
+++ b/include/configs/sun8i.h
@@ -20,6 +20,12 @@
 
 #define CONFIG_SUNXI_USB_PHYS	2
 
+#if defined(CONFIG_MACH_SUN8I_A23)
+#define CONFIG_NAND_SUNXI_GPC_PORTS	{16, 17, 18}
+#elif defined(CONFIG_MACH_SUN8I_A33)
+#define CONFIG_NAND_SUNXI_GPC_PORTS	{16}
+#endif
+
 /*
  * Include common sunxi configuration where most the settings are
  */
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index 76f42f5f3d..aad22f7e55 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -148,8 +148,10 @@
 #define CONFIG_CMD_MMC
 #define CONFIG_MMC_SUNXI
 #define CONFIG_MMC_SUNXI_SLOT		0
+#if !defined(CONFIG_SPL_NAND_SUPPORT)
 #define CONFIG_ENV_IS_IN_MMC
 #define CONFIG_SYS_MMC_ENV_DEV		0	/* first detected MMC controller */
+#endif /* CONFIG_SPL_NAND_SUPPORT */
 #endif
 
 /* 4MB of malloc() pool */
@@ -355,6 +357,24 @@ extern int soft_i2c_gpio_scl;
 #define CONFIG_ENV_IS_NOWHERE
 #endif
 
+#ifdef CONFIG_SPL_NAND_SUPPORT
+#define CONFIG_NAND
+#define CONFIG_SYS_NAND_SELF_INIT
+#define CONFIG_NAND_SUNXI
+#define CONFIG_CMD_SPL_WRITE_SIZE		0x000400
+#define CONFIG_SYS_NAND_U_BOOT_OFFS		0x008000
+
+/* \todo Make these parameterisable in kernel config ? */
+#define CONFIG_NAND_SUNXI_PAGE_SIZE		8192
+#define CONFIG_NAND_SUNXI_ECC_STEP		1024
+#define CONFIG_NAND_SUNXI_ECC_STRENGTH		40
+#define CONFIG_NAND_SUNXI_ADDR_CYCLES		5
+
+#ifndef CONFIG_NAND_SUNXI_GPC_PORTS
+#error "No NAND GPC ports defined, NAND unsupported"
+#endif
+#endif /* CONFIG_SPL_NAND_SUPPORT */
+
 #define CONFIG_MISC_INIT_R
 #define CONFIG_SYS_CONSOLE_IS_IN_ENV