arm-boot/u-boot-imx.git - U-boot NXP imx6

	Commit message (Collapse)	Author	Age	Lines
*	arm: build arch memset/memcpy in Thumb2 mode	Stefan Agner	2015-01-09	-5/+28
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Resynchronize memcpy/memset with kernel 3.17 and build them in Thumb2 mode (unified syntax). Those assembler files can be built and linked in ARM mode too, however when calling them from Thumb2 built code, the stack got corrupted and the copy did not succeed (the exact details have not been traced back). However, the Linux kernel builds those files in Thumb2 mode. Hence U-Boot should build them in Thumb2 mode too when CONFIG_SYS_THUMB_BUILD is set. To build the files without warning, some assembler instructions had to be replaced with their UAL compliant variant (thanks Jeroen for this input). To build the file in Thumb2 mode the implicit-it=always option need to be set to generate Thumb2 compliant IT instructions where needed. We add this option to the general AFLAGS when building for Thumb2. Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org> Signed-off-by: Stefan Agner <stefan@agner.ch>
*	arm: Use optimized memcpy and memset from linux	Matthias Weisser	2011-04-27	-0/+60
	Using optimized versions of memset and memcpy from linux brings a quite noticeable speed (x2 or better) improvement for these two functions. Here are some numbers for test done with jadecpu \| HEAD(1)\| HEAD(1)\| HEAD(2)\| HEAD(2)\| \| \| +patch \| \| +patch \| ---------------------------+--------+--------+--------+--------+ Reset to prompt \| 438ms \| 330ms \| 228ms \| 120ms \| \| \| \| \| \| TFTP a 3MB img \| 4782ms \| 3428ms \| 3245ms \| 2820ms \| \| \| \| \| \| FATLOAD USB a 3MB img* \| 8515ms \| 8510ms \| ------ \| ------ \| \| \| \| \| \| BOOTM LZO img in RAM \| 3473ms \| 3168ms \| 592ms \| 592ms \| where CRC is \| 615ms \| 615ms \| 54ms \| 54ms \| uncompress \| 2460ms \| 2462ms \| 450ms \| 451ms \| final boot_elf \| 376ms \| 68ms \| 65ms \| 65ms \| \| \| \| \| \| BOOTM LZO img in FLASH \| 3207ms \| 2902ms \| 1050ms \| 1050ms \| where CRC is \| 600ms \| 600ms \| 135ms \| 135ms \| uncompress \| 2209ms \| 2211ms \| 828ms \| 828ms \| \| \| \| \| \| Copy 1.4MB from NOR to RAM \| 134ms \| 72ms \| 120ms \| 70ms \| (1) No dcache (2) dcache enabled in board_init *Does not work when dcache is on Size impact: C version: text data bss dec hex filename 202862 18912 266456 488230 77326 u-boot ASM version: text data bss dec hex filename 203798 18912 266288 488998 77626 u-boot 222712 u-boot.bin Signed-off-by: Matthias Weisser <weisserm@arcor.de>