boot.scr is only in distro boot because prior to standardising in extlinux.conf or grub vie efi, distros provided boot.scr files that were tailored for each board with detailed staps and memory locations to load the kernel, dtb, and initramfs. the scripts were wrapped by mkimage and at this point I would consider it to be a legacy thing that possibly should be considered for deprecation. grub, extlinux, or boot.scr should all be provided by the distro. u-boot just nees to load whats provided.
Dennis
On Fri, Dec 18, 2020 at 5:11 AM Alice Guo (OSS) alice.guo@oss.nxp.com wrote:
-----Original Message----- From: Fabio Estevam festevam@gmail.com Sent: 2020年12月18日 19:03 To: Alice Guo (OSS) alice.guo@oss.nxp.com Cc: Stefano Babic sbabic@denx.de; Peng Fan peng.fan@nxp.com; dl-uboot-imx uboot-imx@nxp.com; Ye Li ye.li@nxp.com; U-Boot-Denx u-boot@lists.denx.de; Alice Guo alice.guo@nxp.com; Otavio Salvador otavio@ossystems.com.br; andrey.zhizhikin@leica-geosystems.com Subject: [EXT] Re: [PATCH v2 2/2] board: imx8mp: add boot.cmd for distro boot on iMX8MP
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Hi Alice,
On Fri, Dec 18, 2020 at 4:20 AM Alice Guo (OSS) alice.guo@oss.nxp.com wrote:
+++ b/board/freescale/imx8mp_evk/boot.cmd @@ -0,0 +1,25 @@ +setenv bootargs console=${console} root=${mmcroot};
+for boot_target in ${boot_targets};
This is not how distro boot support works.
boot.scr or extlinux.conf scripts should be provided by the distro itself (Yocto, Buildroot, Debian, etc), and not from U-Boot.
Each distro has its own partitioning mechanism and may store the kernel, dtb in different locations.
Hi, Can you tell me where I can see more details about boot.scr? I didn't see that " boot.scr or extlinux.conf scripts should be provided by the distro itself". Thank you.
Alice