[U-Boot] [PATCH v3] nitrogen6x : Use generic distro configuration
Fabien Lahoudere
fabien.lahoudere at collabora.co.uk
Wed Jul 20 10:07:15 CEST 2016
Hi Stefano,
Thank you for your comments.
On 13/07/2016 16:28, Stefano Babic wrote:
> Hi Fabien,
>
> On 29/06/2016 09:05, Fabien Lahoudere wrote:
>> 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
>>
>> Changes for V3:
>> - remove undefined device tree
>>
>> 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 | 24 +++++++++++++++++++++
>> include/configs/nitrogen6x.h | 36 +++++++++++++++++++++++++------
>> 10 files changed, 108 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..4a665d2 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
> I am afraid that this can be a problem. I am not sure that all boards
> can share the same address.
>
> On most boards, mx6_common is included at the beginning of the
> configuration file. This means that CONFIG_FDTADDR is surely not set,
> and it will be set to 0x18000000.
>
> For some boards this could be flawless: for example, I see the
> "aristainetos" board, it uses as address 0x14000000. But it is set
> later. It remains just confusing that a CONFIG_FDTADDR is set to a
> different address as used.
>
> But for other boards I am quite unsure - it could generate some problems.
I will remove those lines that just lead to a compilation error only if
we forgot to set CONFIG_FDTADDR when CONFIG_DISTRO_DEFAULTS=y.
Is this change acceptable for you?
>> +#endif
>> +#ifndef CONFIG_RAMDISKADDR
>> +#define CONFIG_RAMDISKADDR 0x13000000
>> +#endif
>>
>> /* allow to overwrite serial and ethaddr */
>> #define CONFIG_ENV_OVERWRITE
>> @@ -93,4 +99,22 @@
>> #define CONFIG_CMD_FUSE
>> #define CONFIG_MXC_OCOTP
>>
>> +#ifdef CONFIG_DISTRO_DEFAULTS
>> +#include <config_distro_defaults.h>
>> +
>> +#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..c1a3a47 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 +266,30 @@
>> "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 +351,4 @@
>> #define CONFIG_FASTBOOT_BUF_ADDR CONFIG_SYS_LOAD_ADDR
>> #define CONFIG_FASTBOOT_BUF_SIZE 0x07000000
>>
>> -#endif /* __CONFIG_H */
>> +#endif /* __CONFIG_H */
>>
> Best regards,
> Stefano Babic
>
--
Fabien Lahoudere
Collabora Ltd.
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