This patchset adds the support on Rockchip based ARM64 SOC's that compress the U-BOOT proper along with dtb and ATF in FIT image format.Second stage bootloader(SPL) loads the compressed binaries, uncompress them and handover control to the next stage.
Changes for V3 :-
1. Replaced spl_decompression_enabled() function instead of checking IS_ENABLED(CONFIG_SPL_GZIP) and IS_ENABLED(CONFIG_SPL_LZMA) in spl_fit.c.
2. Removed extra wrapping parentheses in spl_decompression_enabled().
Changes for V4 :-
1. As per the suggestion from Mr.Jonas Karlman (jonas@kwiboo.se) from PATCH v2 and v3 ,check boot time with the following RFC patch with CONFIG_SPL_FIT_SIGNATURE enabled that might impact boot time and As seen there is an improvement in boot time with both compress enabled and disabled , I have added the logs of it below.
[RFC] rockchip: spl: Enable caches to speed up checksum validation https://patchwork.ozlabs.org/project/uboot/patch/20230702110055.3686457-1-jo...
Size Comparision between compressed and uncompressed binaries :-
size of uncompressed binary :- 9.0M (94,21,824 bytes) manoj:u-boot$ ls -lb u-boot-rockchip.bin -rw-rw-r-- 1 manoj manoj 9421824 Sep 10 22:22 u-boot-rockchip.bin
size of GZIP compressed binary :- 8.6M (89,85,088 bytes) manoj:u-boot$ ls -lb u-boot-rockchip.bin -rw-rw-r-- 1 manoj manoj 8985088 Jul 25 07:42 u-boot-rockchip.bin
size of LZMA compressed binary :- 8.6 M (90,06,592 bytes) manoj:u-boot$ ls -lb u-boot-rockchip.bin -rw-rw-r-- 1 manoj manoj 9006592 Jul 25 07:47 u-boot-rockchip.bin
Test results of Booting time using bootstage command in Uboot command prompt on roc-rk3399-pc board :-
1) Uncompressed U-BOOT : Total boot time = 12.063971 seconds => bootstage report Timer summary in microseconds (10 records): Mark Elapsed Stage 0 0 reset 1,833,884 1,833,884 board_init_f 2,959,528 1,125,644 board_init_r 5,224,521 2,264,993 eth_common_init 5,523,428 298,907 eth_initialize 5,523,606 178 main_loop 5,523,764 158 usb_start 12,063,971 6,540,207 cli_loop
2) GZIP Compressed U-BOOT : Total time = 12.824968 seconds
=> bootstage report Timer summary in microseconds (10 records): Mark Elapsed Stage 0 0 reset 2,594,709 2,594,709 board_init_f 3,719,969 1,125,260 board_init_r 5,985,450 2,265,481 eth_common_init 6,284,371 298,921 eth_initialize 6,284,549 178 main_loop 6,284,708 159 usb_start 12,824,968 6,540,260 cli_loop
3) LZMA Compressed U-BOOT : Total time = 17.025004 seconds
=> bootstage report Timer summary in microseconds (10 records): Mark Elapsed Stage 0 0 reset 6,852,254 6,852,254 board_init_f 7,940,143 1,087,889 board_init_r 10,190,458 2,250,315 eth_common_init 10,487,254 296,796 eth_initialize 10,487,432 178 main_loop 10,487,590 158 usb_start 17,025,004 6,537,414 cli_loop
Test results of booting time using RFC patch from Mr.Jonas Karlman(jonas@kwiboo.se) with CONFIG_SPL_FIT_SIGNATURE enabled on roc-rk3399-pc board :-
1. Uncompressed U-BOOT : Total boot time = 10.728 seconds => bootstage report Timer summary in microseconds (10 records): Mark Elapsed Stage 0 0 reset 477,024 477,024 board_init_f 1,623,670 1,146,646 board_init_r 3,889,493 2,265,823 eth_common_init 4,188,402 298,909 eth_initialize 4,188,579 177 main_loop 4,188,738 159 usb_start 10,728,000 6,539,262 cli_loop
2. GZIP Compressed U-BOOT : Total time = 10.708 seconds => bootstage report Timer summary in microseconds (10 records): Mark Elapsed Stage 0 0 reset 457,663 457,663 board_init_f 1,604,222 1,146,559 board_init_r 3,869,505 2,265,283 eth_common_init 4,168,410 298,905 eth_initialize 4,168,587 177 main_loop 4,168,745 158 usb_start 10,707,997 6,539,252 cli_loop
3. LZMA Compressed U-BOOT : Total time = 10.86 seconds => bootstage report Timer summary in microseconds (10 records): Mark Elapsed Stage 0 0 reset 612,427 612,427 board_init_f 1,756,176 1,143,749 board_init_r 4,021,522 2,265,346 eth_common_init 4,320,433 298,911 eth_initialize 4,320,610 177 main_loop 4,320,768 158 usb_start 10,860,001 6,539,233 cli_loop
As I can seen there is an improvement in boot time with Enable caches in SPL to speed up FIT checksum validation, with the following RFC patch from Mr.Jonas. [RFC] rockchip: spl: Enable caches to speed up checksum validation https://patchwork.ozlabs.org/project/uboot/patch/20230702110055.3686457-1-jo...
Manoj Sai (4): spl: fit: support for booting a GZIP-compressed U-boot binary spl: fit: support for booting a LZMA-compressed U-boot binary rockchip: Add support to generate GZIP compressed U-boot binary rockchip: Add support to generate LZMA compressed U-boot binary
arch/arm/dts/rockchip-u-boot.dtsi | 11 +++++++++++ common/spl/spl_fit.c | 20 +++++++++++++++++--- include/spl.h | 10 ++++++++++ 3 files changed, 38 insertions(+), 3 deletions(-)