封欢 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
..
SPI 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
SPL 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
android 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
api 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
arch 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
board 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
build 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
chromium 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
develop 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
device-tree-bindings 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
driver-model 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
imx 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
media 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
mvebu 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
sphinx 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
sphinx-static 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
uImage.FIT 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
uefi 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
usage 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
.gitignore 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
I2C_Edge_Conditions 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
Makefile 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.440-DDR-performance 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.AMCC-eval-boards-cleanup 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.Heterogeneous-SoCs 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.JFFS2 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.JFFS2_NAND 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.LED 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.OFT 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.POST 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.SNTP 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.SPL 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.TPL 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.VLAN 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.VSC3316-3308 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.arm-caches 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.arm-relocation 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.armada-secureboot 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.asn1 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.atmel_mci 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.atmel_pmecc 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.autoboot 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.bcm7xxx 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.bcmns3 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.bedbug 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.bitbangMII 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.bloblist 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.bootcount 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.boston 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.bus_vcxk 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.cfi 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.chromium 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.chromium-chainload 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.commands.itest 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.commands.spl 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.console 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.davinci 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.davinci.nand_spl 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.dfu 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.dfutftp 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.displaying-bmps 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.distro 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.dns 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.enetaddr 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.esbc_validate 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.ext4 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.falcon 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fdt-control 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fdt-overlays 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fec_mxc 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fsl-clk 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fsl-ddr 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fsl-dpaa 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fsl-esdhc 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fsl-hwconfig 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fsl-trustzone-components 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fsl_iim 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.fuse 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.generic-board 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.generic_usb_ohci 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.gpio 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.gpt 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.hwconfig 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.i2c 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.iomux 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.kconfig 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.kwbimage 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.link-local 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.lynxkdi 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.m54418twr 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.malta 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.marvell 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.mediatek 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.memory-test 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.menu 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.mpc74xx 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.mpc83xx.ddrecc 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.mpc83xxads 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.mpc85xx 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.mpc85xx-sd-spi-boot 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.mpc85xx-spin-table 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.mpc85xxcds 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.multi-dtb-fit 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.mxc_ocotp 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.nand 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.nand-boot-ppc440 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.ne2000 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.nokia_rx51 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.nvme 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.odroid 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.omap-ulpi-viewport 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.omap3 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.pblimage 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.pcap 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.plan9 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.power-framework 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.pxe 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.ramboot-ppc85xx 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.rmobile 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.rockchip 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.rockusb 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.s5p4418 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.s5pc1xx 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.sata 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.sched 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.scrapyard 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.semihosting 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.serial_multi 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.sha1 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.silent 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.socfpga 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.spear 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.splashprepare 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.srio-pcie-boot-corenet 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.standalone 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.t1040-l2switch 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.tee 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.ti-secure 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.ubi 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.ubispl 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.ublimage 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.udp 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.unaligned-memory-access.txt 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.uniphier 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.update 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.usb 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.vf610 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.video 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.virtio 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.vxworks 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.watchdog 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
README.zfs 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
bounces 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
conf.py 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
feature-removal-schedule.txt 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
git-mailrc 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
index.rst 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
kwboot.1 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago
mkimage.1 720f21763f initial uboot use package u-boot-2021.01.tar.gz 3 years ago

README.440-DDR-performance

AMCC suggested to set the PMU bit to 0 for best performace on the
PPC440 DDR controller. The 440er common DDR setup files (sdram.c &
spd_sdram.c) are changed accordingly. So all 440er boards using
these setup routines will automatically receive this performance
increase.

Please see below some benchmarks done by AMCC to demonstrate this
performance changes:


----------------------------------------
SDRAM0_CFG0[PMU] = 1 (U-Boot default for Bamboo, Yosemite and Yellowstone)
----------------------------------------
Stream benchmark results
-------------------------------------------------------------
This system uses 8 bytes per DOUBLE PRECISION word.
-------------------------------------------------------------
Array size = 2000000, Offset = 0
Total memory required = 45.8 MB.
Each test is run 10 times, but only
the *best* time for each is used.
-------------------------------------------------------------
Your clock granularity/precision appears to be 1 microseconds.
Each test below will take on the order of 112345 microseconds.
(= 112345 clock ticks)
Increase the size of the arrays if this shows that you are not getting
at least 20 clock ticks per test.
-------------------------------------------------------------
WARNING -- The above is only a rough guideline.
For best results, please be sure you know the precision of your system
timer.
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 256.7683 0.1248 0.1246 0.1250
Scale: 246.0157 0.1302 0.1301 0.1302
Add: 255.0316 0.1883 0.1882 0.1885
Triad: 253.1245 0.1897 0.1896 0.1899


TTCP Benchmark Results
ttcp-t: socket
ttcp-t: connect
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5000 tcp ->
localhost
ttcp-t: 16777216 bytes in 0.28 real seconds = 454.29 Mbit/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.14, calls/sec = 7268.57
ttcp-t: 0.0user 0.1sys 0:00real 60% 0i+0d 0maxrss 0+2pf 3+1506csw

----------------------------------------
SDRAM0_CFG0[PMU] = 0 (Suggested modification)
Setting PMU = 0 provides a noticeable performance improvement *2% to
5% improvement in memory performance.
*Improves the Mbit/sec for TTCP benchmark by almost 76%.
----------------------------------------
Stream benchmark results
-------------------------------------------------------------
This system uses 8 bytes per DOUBLE PRECISION word.
-------------------------------------------------------------
Array size = 2000000, Offset = 0
Total memory required = 45.8 MB.
Each test is run 10 times, but only
the *best* time for each is used.
-------------------------------------------------------------
Your clock granularity/precision appears to be 1 microseconds.
Each test below will take on the order of 120066 microseconds.
(= 120066 clock ticks)
Increase the size of the arrays if this shows that you are not getting
at least 20 clock ticks per test.
-------------------------------------------------------------
WARNING -- The above is only a rough guideline.
For best results, please be sure you know the precision of your system
timer.
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 262.5167 0.1221 0.1219 0.1223
Scale: 258.4856 0.1238 0.1238 0.1240
Add: 262.5404 0.1829 0.1828 0.1831
Triad: 266.8594 0.1800 0.1799 0.1802

TTCP Benchmark Results
ttcp-t: socket
ttcp-t: connect
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5000 tcp ->
localhost
ttcp-t: 16777216 bytes in 0.16 real seconds = 804.06 Mbit/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.08, calls/sec = 12864.89
ttcp-t: 0.0user 0.0sys 0:00real 46% 0i+0d 0maxrss 0+2pf 120+1csw


2006-07-28, Stefan Roese