[U-Boot] [PATCH v2] nitrogen6x : Use generic distro configuration

Fabien Lahoudere fabien.lahoudere at collabora.co.uk
Tue Jun 28 12:22:18 CEST 2016


In order to simplify the use of various images on various media
for nitrogen6x, the configuration of the board must follow the
generic distro configuration (doc/README.distro).

In order to boot your old rootfs, move your kernel and your device
tree in /boot/. Then create /boot/extlinux/extlinux.conf with for
example:

default Buildroot

label Buildroot
	kernel /boot/zImage
	append console=ttymxc1,115200 root=/dev/mmcblk0p1 rootwait rw
	fdtdir /boot

Signed-off-by: Fabien Lahoudere <fabien.lahoudere at collabora.co.uk>
---
Changes for V2:
	- reintegration of deleted env
	- changes are applied only if CONFIG_DISTRO_DEFAULTS=y

 configs/mx6qsabrelite_defconfig |  1 +
 configs/nitrogen6dl2g_defconfig |  1 +
 configs/nitrogen6dl_defconfig   |  1 +
 configs/nitrogen6q2g_defconfig  |  1 +
 configs/nitrogen6q_defconfig    |  1 +
 configs/nitrogen6s1g_defconfig  |  1 +
 configs/nitrogen6s_defconfig    |  1 +
 doc/README.imx6                 | 47 +++++++++++++++++++++++++++++++++++++++++
 include/configs/mx6_common.h    | 28 ++++++++++++++++++++++++
 include/configs/nitrogen6x.h    | 35 ++++++++++++++++++++++++------
 10 files changed, 111 insertions(+), 6 deletions(-)

diff --git a/configs/mx6qsabrelite_defconfig b/configs/mx6qsabrelite_defconfig
index fa6139a..27b64c4 100644
--- a/configs/mx6qsabrelite_defconfig
+++ b/configs/mx6qsabrelite_defconfig
@@ -36,3 +36,4 @@ CONFIG_G_DNL_MANUFACTURER="Boundary"
 CONFIG_G_DNL_VENDOR_NUM=0x0525
 CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
 CONFIG_OF_LIBFDT=y
+CONFIG_DISTRO_DEFAULTS=y
\ No newline at end of file
diff --git a/configs/nitrogen6dl2g_defconfig b/configs/nitrogen6dl2g_defconfig
index 02b2462..b1344c6 100644
--- a/configs/nitrogen6dl2g_defconfig
+++ b/configs/nitrogen6dl2g_defconfig
@@ -34,3 +34,4 @@ CONFIG_G_DNL_MANUFACTURER="Boundary"
 CONFIG_G_DNL_VENDOR_NUM=0x0525
 CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
 CONFIG_OF_LIBFDT=y
+CONFIG_DISTRO_DEFAULTS=y
\ No newline at end of file
diff --git a/configs/nitrogen6dl_defconfig b/configs/nitrogen6dl_defconfig
index 52553f6..f794c08 100644
--- a/configs/nitrogen6dl_defconfig
+++ b/configs/nitrogen6dl_defconfig
@@ -34,3 +34,4 @@ CONFIG_G_DNL_MANUFACTURER="Boundary"
 CONFIG_G_DNL_VENDOR_NUM=0x0525
 CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
 CONFIG_OF_LIBFDT=y
+CONFIG_DISTRO_DEFAULTS=y
\ No newline at end of file
diff --git a/configs/nitrogen6q2g_defconfig b/configs/nitrogen6q2g_defconfig
index 11188b7..56cebe0 100644
--- a/configs/nitrogen6q2g_defconfig
+++ b/configs/nitrogen6q2g_defconfig
@@ -34,3 +34,4 @@ CONFIG_G_DNL_MANUFACTURER="Boundary"
 CONFIG_G_DNL_VENDOR_NUM=0x0525
 CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
 CONFIG_OF_LIBFDT=y
+CONFIG_DISTRO_DEFAULTS=y
\ No newline at end of file
diff --git a/configs/nitrogen6q_defconfig b/configs/nitrogen6q_defconfig
index 05bf140..c150b97 100644
--- a/configs/nitrogen6q_defconfig
+++ b/configs/nitrogen6q_defconfig
@@ -34,3 +34,4 @@ CONFIG_G_DNL_MANUFACTURER="Boundary"
 CONFIG_G_DNL_VENDOR_NUM=0x0525
 CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
 CONFIG_OF_LIBFDT=y
+CONFIG_DISTRO_DEFAULTS=y
\ No newline at end of file
diff --git a/configs/nitrogen6s1g_defconfig b/configs/nitrogen6s1g_defconfig
index bb081a2..dfd096d 100644
--- a/configs/nitrogen6s1g_defconfig
+++ b/configs/nitrogen6s1g_defconfig
@@ -34,3 +34,4 @@ CONFIG_G_DNL_MANUFACTURER="Boundary"
 CONFIG_G_DNL_VENDOR_NUM=0x0525
 CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
 CONFIG_OF_LIBFDT=y
+CONFIG_DISTRO_DEFAULTS=y
\ No newline at end of file
diff --git a/configs/nitrogen6s_defconfig b/configs/nitrogen6s_defconfig
index 08e91c9..5e2e693 100644
--- a/configs/nitrogen6s_defconfig
+++ b/configs/nitrogen6s_defconfig
@@ -34,3 +34,4 @@ CONFIG_G_DNL_MANUFACTURER="Boundary"
 CONFIG_G_DNL_VENDOR_NUM=0x0525
 CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
 CONFIG_OF_LIBFDT=y
+CONFIG_DISTRO_DEFAULTS=y
\ No newline at end of file
diff --git a/doc/README.imx6 b/doc/README.imx6
index 1823fb2..36452f6 100644
--- a/doc/README.imx6
+++ b/doc/README.imx6
@@ -138,3 +138,50 @@ c
 The last "c" command tells kermit (from ckermit package in most distros)
 to switch from command line mode to communication mode, and when the
 script is finished, the U-Boot prompt is shown in the same shell.
+
+3. Using generic distro configuration
+-------------------------------------
+
+In order to simplify the use of various images on various media
+for imx6 boards, the configuration of the board must follow the
+generic distro configuration (doc/README.distro).
+
+3.1. Setup uboot configuration for your board
+---------------------------------------------
+
+First, you have to set 'CONFIG_DISTRO_DEFAULTS=y' in your board defconfig
+
+Some mandatory variable are set in mx6_common.h but can be overwritten like:
+      - fdtfile with CONFIG_FDTFILE
+      - fdt_addr_r and fdt_addr with CONFIG_FDTADDR
+      - ramdisk_addr_r, ramdiskaddr CONFIG_RAMDISKADDR
+
+You also have to define BOOT_TARGET_DEVICES with available media.
+For example added in include/configs/nitrogen6x.h:
+#define BOOT_TARGET_DEVICES(func) \
+	func(MMC, mmc, 0) \
+	func(MMC, mmc, 1) \
+	func(SATA, sata, 0) \
+	func(USB, usb, 0) \
+	func(PXE, pxe, na) \
+	func(DHCP, dhcp, na)
+
+All this configuration should be done before '#include "mx6_common.h"'
+
+3.2. Setup your distribution
+----------------------------
+
+Set the partition containing /boot/ bootable.
+Copy your kernel and device tree in /boot.
+Create /boot/extlinux/extlinux.conf on your rootfs and fill it according to specification
+at http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec/
+
+For example:
+
+default Buildroot
+
+label Buildroot
+	kernel /boot/zImage
+	append console=ttymxc1,115200 root=/dev/mmcblk0p1 rootwait rw
+	fdtdir /boot
+
diff --git a/include/configs/mx6_common.h b/include/configs/mx6_common.h
index fb49322..d65bd8e 100644
--- a/include/configs/mx6_common.h
+++ b/include/configs/mx6_common.h
@@ -58,6 +58,12 @@
 #endif
 #endif
 #define CONFIG_SYS_LOAD_ADDR	CONFIG_LOADADDR
+#ifndef CONFIG_FDTADDR
+#define CONFIG_FDTADDR		0x18000000
+#endif
+#ifndef CONFIG_RAMDISKADDR
+#define CONFIG_RAMDISKADDR	0x13000000
+#endif
 
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE
@@ -93,4 +99,26 @@
 #define CONFIG_CMD_FUSE
 #define CONFIG_MXC_OCOTP
 
+#ifdef CONFIG_DISTRO_DEFAULTS
+#include <config_distro_defaults.h>
+
+#ifndef CONFIG_FDTFILE
+#define CONFIG_FDTFILE "undefined"
+#endif
+
+#include <config_distro_bootcmd.h>
+
+#define CONFIG_EXTRA_DEFAULT_ENV_SETTINGS \
+	"fdtfile=" CONFIG_FDTFILE "\0" \
+	"fdt_addr_r=" __stringify(CONFIG_FDTADDR) "\0"  \
+	"fdt_addr=" __stringify(CONFIG_FDTADDR) "\0" \
+	"kernel_addr_r=" __stringify(CONFIG_LOADADDR) "\0"  \
+	"pxefile_addr_r=" __stringify(CONFIG_LOADADDR) "\0" \
+	"scriptaddr=" __stringify(CONFIG_LOADADDR) "\0" \
+	"ramdisk_addr_r=" __stringify(CONFIG_RAMDISKADDR) "\0" \
+	"ramdiskaddr=" __stringify(CONFIG_RAMDISKADDR) "\0" \
+	BOOTENV
+
+#endif
+
 #endif
diff --git a/include/configs/nitrogen6x.h b/include/configs/nitrogen6x.h
index b651eb3..528e5e1 100644
--- a/include/configs/nitrogen6x.h
+++ b/include/configs/nitrogen6x.h
@@ -10,8 +10,6 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
-#include "mx6_common.h"
-
 #define CONFIG_MACH_TYPE	3769
 
 /* Size of malloc() pool */
@@ -38,9 +36,9 @@
 /* I2C Configs */
 #define CONFIG_SYS_I2C
 #define CONFIG_SYS_I2C_MXC
-#define CONFIG_SYS_I2C_MXC_I2C1		/* enable I2C bus 1 */
-#define CONFIG_SYS_I2C_MXC_I2C2		/* enable I2C bus 2 */
-#define CONFIG_SYS_I2C_MXC_I2C3		/* enable I2C bus 3 */
+#define CONFIG_SYS_I2C_MXC_I2C1	/* enable I2C bus 1 */
+#define CONFIG_SYS_I2C_MXC_I2C2	/* enable I2C bus 2 */
+#define CONFIG_SYS_I2C_MXC_I2C3	/* enable I2C bus 3 */
 #define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_I2C_EDID
 
@@ -113,6 +111,8 @@
 
 #define CONFIG_PREBOOT                 ""
 
+#ifndef CONFIG_DISTRO_DEFAULTS
+
 #ifdef CONFIG_CMD_SATA
 #define CONFIG_DRIVE_SATA "sata "
 #else
@@ -266,6 +266,29 @@
 	"done\0" \
 
 #endif
+
+#else
+#if defined(CONFIG_SABRELITE)
+#define CONFIG_FDTFILE "imx6q-sabrelite.dtb"
+#else
+#define CONFIG_FDTFILE "imx6q-nitrogen6x.dtb"
+#endif
+
+#define BOOT_TARGET_DEVICES(func) \
+	func(MMC, mmc, 0) \
+	func(MMC, mmc, 1) \
+	func(SATA, sata, 0) \
+	func(USB, usb, 0) \
+	func(PXE, pxe, na) \
+	func(DHCP, dhcp, na)
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	CONFIG_EXTRA_DEFAULT_ENV_SETTINGS
+
+#endif
+
+#include "mx6_common.h"
+
 /* Miscellaneous configurable options */
 #define CONFIG_SYS_MEMTEST_START       0x10000000
 #define CONFIG_SYS_MEMTEST_END	       0x10010000
@@ -327,4 +350,4 @@
 #define CONFIG_FASTBOOT_BUF_ADDR   CONFIG_SYS_LOAD_ADDR
 #define CONFIG_FASTBOOT_BUF_SIZE   0x07000000
 
-#endif	       /* __CONFIG_H */
+#endif /* __CONFIG_H */
-- 
2.1.4



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