4a7224c41f
- B9A: read-only audit of stock LK/DT: the panel is an ST7735S 128x128 on SPI (BLSP1 QUP4, 16 MHz, mode 3, D/C GPIO116, RESET GPIO118), backlight = PM8916 MPP4 current sink 40 mA. - B9B: upstream panel-mipi-dbi with the stock init sequence as firmware; MPP4 sink via pinctrl + gpio-backlight; first light with correct colours/orientation/offsets. - B9C: fbcon (6x8, 21x16) on tty1 + getty, UART console kept, aurora-display service; cache B9C b9ce13c9 written and verified, cold boots with LTE + Wi-Fi + display. - B9L (RAM only): lk2nd second stage with an msm8916 SPI panel port shows a picture before Linux. - Sanitizer: whitelist for b8/ and b9/.
27 lines
2.1 KiB
Bash
Executable file
27 lines
2.1 KiB
Bash
Executable file
#!/bin/bash
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# B9C cache candidate: exact recipe of b8/b8f/cache/mkfs-cache-b8f.sh (857c9c30); differs only in kernel file (B9C Image.gz-dtb: b9c kernel
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# + B9B DTB), fdt (B9B DTB), initrd (B9C initramfs), append (B9C cmdline = B8F + console=tty0 before the UART console + fbcon=font:6x8
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# consoleblank=0), file names, extlinux label, fs label and UUIDs. Runs on 480s (mke2fs 1.47.2). Offline only.
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# The image contains the AP PSK (in the initramfs) - never publish it.
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set -e
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cd ~/doc/modem/jz08-aurora/b9/b9c/cache
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OUT=${1:-cache-extlinux-b9c.img}; F=../out
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echo "0fef41b262917c8ae308fa222da0017e2b3cb3ec5da1ca8ba18d0318476761a3 $F/cmdline.txt" | sha256sum -c
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echo "632a7be801978dfaddeae633d5293b3abe385f2281cc5053772e6637897a7e5a $F/Image.gz-dtb" | sha256sum -c
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echo "7ca9cc794a3b85d3b7240f6311ad03bee9e1a4a59aae2ed9438318e853f7c3dc $F/aurora-b9c.dtb" | sha256sum -c
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echo "ac518e27e2957ad5e4515969b9a3808024e11ef8d1a79433a899a67dbc644558 $F/initramfs-b9c.cpio.gz" | sha256sum -c
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ST=$(mktemp -d); mkdir -p $ST/extlinux
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cp $F/Image.gz-dtb $F/aurora-b9c.dtb $F/initramfs-b9c.cpio.gz $ST/
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printf "default b9c\nlabel b9c\n\tlinux /Image.gz-dtb\n\tfdt /aurora-b9c.dtb\n\tinitrd /initramfs-b9c.cpio.gz\n\tappend %s\n" "$(cat $F/cmdline.txt)" > $ST/extlinux/extlinux.conf
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cp $ST/extlinux/extlinux.conf extlinux-b9c.conf
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chmod 0644 $ST/*.* $ST/extlinux/extlinux.conf; chmod 0755 $ST $ST/extlinux
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find $ST -exec touch -h -d @1790726400 {} +
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rm -f $OUT; truncate -s 134217728 $OUT
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E2FSPROGS_FAKE_TIME=1790726400 /sbin/mke2fs -F -q -t ext2 -O none,filetype,sparse_super \
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-b 4096 -I 128 -N 64 -m 0 -L aurora-b9c -U 4a5a3038-b6f0-4000-8000-00000000b9c0 \
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-E root_owner=0:0,hash_seed=4a5a3038-b6f0-4000-8000-00000000b9c1 -d $ST $OUT 32768
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rm -rf $ST
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for f in / /lost+found /extlinux /extlinux/extlinux.conf /Image.gz-dtb /aurora-b9c.dtb /initramfs-b9c.cpio.gz; do for t in atime ctime mtime; do echo "sif $f $t @1790726400"; done; done > /tmp/b9c-sif.$$
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/sbin/debugfs -w -f /tmp/b9c-sif.$$ $OUT >/dev/null 2>&1; rm -f /tmp/b9c-sif.$$
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/sbin/e2fsck -fn $OUT >/dev/null 2>&1 && echo "e2fsck -fn clean"
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stat -c "%n %s" $OUT; sha256sum $OUT
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