Hi Marek,
On 13.05.2017 11:54, Andreas Färber wrote:
<big snip>
+/* Default boot environment. */
+#define CONFIG_BOOTCOMMAND \
+ "i2c dev 1; " \
+ "i2c read 0x2a 0x9 1 0x00FFFFF0; " \
+ "setexpr.b rescue *0x00FFFFF0; " \
+ "if test $rescue -ge 1; then " \
+ "echo BOOT RESCUE; " \
+ "run rescueboot; " \
+ "else " \
+ "echo BOOT eMMC FS; " \
+ "run mmcboot; " \
+ "fi"
+
+/* Keep device tree and initrd in lower memory so the kernel can access them */
+#define CONFIG_EXTRA_ENV_SETTINGS \
+ "fdt_high=0x10000000\0" \
+ "initrd_high=0x10000000\0" \
+ "ethact=neta2\0" \
+ "mmcboot=setenv bootargs \"$bootargs cfg80211.freg=$regdomain\"; " \
+ "ext4load mmc 0 0x01000000 boot/zImage; " \
+ "ext4load mmc 0 0x02000000 boot/dtb; " \
+ "bootz 0x01000000 - 0x02000000\0" \
+ "rescueboot=i2c mw 0x2a.1 0x3 0x1c 1; " \
+ "i2c mw 0x2a.1 0x4 0x1c 1; " \
+ "mw.l 0x01000000 0x00ff000c; " \
+ "i2c write 0x01000000 0x2a.1 0x5 4 -s; " \
+ "setenv bootargs \"$bootargs omniarescue=$rescue\"; " \
+ "sf probe; " \
+ "sf read 0x1000000 0x100000 0x700000; " \
+ "bootz 0x1000000\0" \
+ "bootargs=earlyprintk console=ttyS0,115200 rootfstype=ext4 " \
+ "rootdelay=2 root=b301 rootflags=subvol=@,commit=5 rw\0"
These env settings are very old-style. Please use the distro macros.
That means among others defining kernel_addr_r=0x01000000,
fdt_addr_r=0x02000000 and ramdisk_addr_r and use the standardized boot
commands instead of hardcoding mmcboot here. Then also USB, mSATA and
network boot should be supported, and it abstracts the filesystem, plus
it adds UEFI support.
Selecting the distro defaults from the defconfig should also obsolete
requiring ext4 in this config, among others.
Apart from addressing all other comments from Andreas, yes please
switch to using the distro defaults and configurations. Take
a look at this patch from Patrick, this should give you an idea:
https://patchwork.ozlabs.org/patch/760587/
Thanks,
Stefan
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