AN13709 - Results

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Table 2. Initial Linux boot time measurements

	SPL			U-BOOT				KERNEL
No.	BOOTROM	DDR initialization	SPL initializations + Load UBoot image	U-Boot initializations (init_ sequence_f)	U-Boot initializations (init_ sequence_r)	Boot sequence	Kernel image load	Kernel boot until PSPLASH image	Total time
	(ms)	(ms)	(ms)	(ms)	(ms)	(ms)	(ms)	(ms)	(ms)
1	260	253	285	594	906	3651	329	5768	12046
2	299	253	285	594	1016	3852	328	5920	12547
3	258	252	284	587	901	3730	328	5902	12242
4	257	253	284	587	896	3726	328	5846	12177
5	261	253	284	587	896	3726	328	5975	12310
Average time (ms)	805			5579				5883	12264

 

Table 3. Optimized Linux boot time measurements

	SPL				KERNEL
No.	BOOTROM	DDR initialization	SPL initializations	Kernel Image Load	Kernel Boot Until PSPLASH Image	Total time
	(ms)	(ms)	(ms)	(ms)	(ms)	(ms)
1	262	252	128	460	2661	3763
2	264	253	130	461	2772	3880
3	249	252	129	460	2924	4014
4	255	252	129	460	2717	3813
5	253	253	131	461	2594	3692
Average time (ms)	1099				2734	3832

 

 

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