From: Dzmitry Sankouski Date: Tue, 22 Feb 2022 18:49:54 +0000 (+0300) Subject: board: axy17lte: get board usable - add bootcmd and docs X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=d5c4ec4aa3aaa833cb535daa64a583a14304fc95;p=u-boot.git board: axy17lte: get board usable - add bootcmd and docs U-boot is intended to replace linux kernel in android boot image(ABL), and it's FIT payload to replace initramfs file. The boot process is similar to boot image with linux: - android bootloader (ABL) unpacks android boot image - ABL sets `linux,initrd-start property` in chosen node in unpacked FDT - ABL sets x0 register to FDT address, and passes control to u-boot - u-boot reads x0 register, and stores it in `prevbl_fdt_addr` env variable - u-boot reads `linux,initrd-start` property, and stores it in `prevbl_initrd_start_addr` In this way, u-boot bootcmd relies on `prevbl_initrd_start_addr` env variable, and boils down to `bootm $prevbl_initrd_start_addr`. If more control on boot process is desired, pack a boot script in FIT image, and put it to default configuration What done: - Rearrange defconfig option order - Add CONFIG_SAVE_PREV_BL_* options - Doc updates: - remove wrong SBOOT memory corruption note, because memory is changed during u-boot bringup process, not by SBOOT - put payload on ramdisk place in abl boot image creation step Signed-off-by: Dzmitry Sankouski --- diff --git a/configs/a3y17lte_defconfig b/configs/a3y17lte_defconfig index b433da3630..7ca7ce0daf 100644 --- a/configs/a3y17lte_defconfig +++ b/configs/a3y17lte_defconfig @@ -11,8 +11,11 @@ CONFIG_SYS_LOAD_ADDR=0x40001000 CONFIG_FIT=y CONFIG_USE_PREBOOT=y CONFIG_PREBOOT="echo Read pressed buttons status;KEY_VOLUMEUP=gpa20;KEY_HOME=gpa17;KEY_VOLUMEDOWN=gpa21;KEY_POWER=gpa00;PRESSED=0;RELEASED=1;if gpio input $KEY_VOLUMEUP; then setenv VOLUME_UP $PRESSED; else setenv VOLUME_UP $RELEASED; fi;if gpio input $KEY_VOLUMEDOWN; then setenv VOLUME_DOWN $PRESSED; else setenv VOLUME_DOWN $RELEASED; fi;if gpio input $KEY_HOME; then setenv HOME $PRESSED; else setenv HOME $RELEASED; fi;if gpio input $KEY_POWER; then setenv POWER $PRESSED; else setenv POWER $RELEASED; fi;" +CONFIG_SAVE_PREV_BL_FDT_ADDR=y +CONFIG_SAVE_PREV_BL_INITRAMFS_START_ADDR=y # CONFIG_DISPLAY_CPUINFO is not set CONFIG_HUSH_PARSER=y CONFIG_CMD_GPIO=y CONFIG_CMD_I2C=y CONFIG_DM_I2C_GPIO=y +CONFIG_LMB_MAX_REGIONS=64 diff --git a/configs/a5y17lte_defconfig b/configs/a5y17lte_defconfig index 2534ab0573..793389eb73 100644 --- a/configs/a5y17lte_defconfig +++ b/configs/a5y17lte_defconfig @@ -11,8 +11,11 @@ CONFIG_SYS_LOAD_ADDR=0x40001000 CONFIG_FIT=y CONFIG_USE_PREBOOT=y CONFIG_PREBOOT="echo Read pressed buttons status;KEY_VOLUMEUP=gpa20;KEY_HOME=gpa17;KEY_VOLUMEDOWN=gpa21;KEY_POWER=gpa00;PRESSED=0;RELEASED=1;if gpio input $KEY_VOLUMEUP; then setenv VOLUME_UP $PRESSED; else setenv VOLUME_UP $RELEASED; fi;if gpio input $KEY_VOLUMEDOWN; then setenv VOLUME_DOWN $PRESSED; else setenv VOLUME_DOWN $RELEASED; fi;if gpio input $KEY_HOME; then setenv HOME $PRESSED; else setenv HOME $RELEASED; fi;if gpio input $KEY_POWER; then setenv POWER $PRESSED; else setenv POWER $RELEASED; fi;" +CONFIG_SAVE_PREV_BL_FDT_ADDR=y +CONFIG_SAVE_PREV_BL_INITRAMFS_START_ADDR=y # CONFIG_DISPLAY_CPUINFO is not set CONFIG_HUSH_PARSER=y CONFIG_CMD_GPIO=y CONFIG_CMD_I2C=y CONFIG_DM_I2C_GPIO=y +CONFIG_LMB_MAX_REGIONS=64 diff --git a/configs/a7y17lte_defconfig b/configs/a7y17lte_defconfig index a2d76377ab..eaa448d84d 100644 --- a/configs/a7y17lte_defconfig +++ b/configs/a7y17lte_defconfig @@ -11,8 +11,11 @@ CONFIG_SYS_LOAD_ADDR=0x40001000 CONFIG_FIT=y CONFIG_USE_PREBOOT=y CONFIG_PREBOOT="echo Read pressed buttons status;KEY_VOLUMEUP=gpa20;KEY_HOME=gpa17;KEY_VOLUMEDOWN=gpa21;KEY_POWER=gpa00;PRESSED=0;RELEASED=1;if gpio input $KEY_VOLUMEUP; then setenv VOLUME_UP $PRESSED; else setenv VOLUME_UP $RELEASED; fi;if gpio input $KEY_VOLUMEDOWN; then setenv VOLUME_DOWN $PRESSED; else setenv VOLUME_DOWN $RELEASED; fi;if gpio input $KEY_HOME; then setenv HOME $PRESSED; else setenv HOME $RELEASED; fi;if gpio input $KEY_POWER; then setenv POWER $PRESSED; else setenv POWER $RELEASED; fi;" +CONFIG_SAVE_PREV_BL_FDT_ADDR=y +CONFIG_SAVE_PREV_BL_INITRAMFS_START_ADDR=y # CONFIG_DISPLAY_CPUINFO is not set CONFIG_HUSH_PARSER=y CONFIG_CMD_GPIO=y CONFIG_CMD_I2C=y CONFIG_DM_I2C_GPIO=y +CONFIG_LMB_MAX_REGIONS=64 diff --git a/doc/board/samsung/axy17lte.rst b/doc/board/samsung/axy17lte.rst index e84fefec70..b7f299d1c7 100644 --- a/doc/board/samsung/axy17lte.rst +++ b/doc/board/samsung/axy17lte.rst @@ -66,26 +66,17 @@ and is therefore SBOOT's payload. It may be pure u-boot (with loading u-boot's payload from flash in mind), or u-boot + u-boot's payload. -It should be kept in mind, that SBOOT binary patches it's payload after loading -in address range 0x401f8550-0x401f9280. Given SBOOT loads payload to 0x40001000, -a range of 0x1f7550-0x1f8280 (2061648-2065024) in a payload file -will be corrupted after loading to RAM. - Creating payload file """"""""""""""""""""" - Assemble FIT image for your kernel -- Create a file for u-boot payload ``touch sboot-payload`` -- Write zeroes till 0x200000 address to be sure SBOOT won't corrupt your info - ``dd if=/dev/zero of=sboot-payload bs=$((0x200000)) count=1`` -- Write u-boot to the start of the payload ``dd if= of=sboot-payload`` -- Write FIT image to payload from 0x200000 address - ``dd if= of=sboot-payload seek=1 bs=2M`` Creating android boot image """"""""""""""""""""""""""" Once payload created, it's time for android image:: - mkbootimg --base 0x40000000 --kernel_offset 0x00000000 --ramdisk_offset 0x01000000 --tags_offset 0x00000100 --pagesize 2048 --second_offset 0x00f00000 --kernel -o uboot.img + uboot= + ramdisk= + mkbootimg --base 0x40000000 --kernel_offset 0x00000000 --ramdisk_offset 0x01000000 --tags_offset 0x00000100 --pagesize 2048 --second_offset 0x00f00000 --kernel "$uboot" --ramdisk "$ramdisk" -o uboot.img Note, that stock Samsung bootloader ignores offsets, set in mkbootimg. diff --git a/include/configs/exynos78x0-common.h b/include/configs/exynos78x0-common.h index 53396aa422..457057ce71 100644 --- a/include/configs/exynos78x0-common.h +++ b/include/configs/exynos78x0-common.h @@ -35,6 +35,7 @@ #define CONFIG_SYS_SDRAM_BASE 0x40000000 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_TEXT_BASE + SZ_2M - GENERATED_GBL_DATA_SIZE) +#define CONFIG_SYS_BOOTM_LEN SZ_32M /* DRAM Memory Banks */ #define SDRAM_BANK_SIZE (256UL << 20UL) /* 256 MB */ #define PHYS_SDRAM_1 CONFIG_SYS_SDRAM_BASE @@ -79,7 +80,10 @@ #define EXYNOS_FDTFILE_SETTING #endif +/* Cannot use bootdelay > 0, because timer is not working */ #define EXTRA_ENV_SETTINGS \ + "bootdelay=0\0" \ + "bootcmd=source $prevbl_initrd_start_addr:bootscript\0" \ EXYNOS_DEVICE_SETTINGS \ EXYNOS_FDTFILE_SETTING \ MEM_LAYOUT_ENV_SETTINGS