Benoît Thébaudeau 3287f6d385 nand: Add torture feature 11 years ago
..
DocBook 47444a27d2 kerneldoc: tmpl: Implement template for LG-arrays 11 years ago
SPL c3567d808d README.SPL: Move the 'Estimating stack usage' from omap3 to here 11 years ago
device-tree-bindings c6af2e7d87 tegra: fdt: Add NAND controller binding and definitions 11 years ago
driver-model 6f62f42071 arm: Remove support for lpc2292 11 years ago
uImage.FIT 48690d8024 net ppc: fix ethernet device names with spaces 14 years ago
I2C_Edge_Conditions 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
README.440-DDR-performance a2c95a7224 PPC440 DDR setup: Set SDRAM0_CFG0[PMU]=0 for best performance 18 years ago
README.AMCC-eval-boards-cleanup 8a316c9b62 Major cleanup for AMCC PPC4xx eval boards. 19 years ago
README.ARM-SoC 84ad688473 arm: Move cpu/$CPU to arch/arm/cpu/$CPU 14 years ago
README.ARM-memory-map 14d0a02a16 Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE 13 years ago
README.AVR32 66b7bc5175 avr32: Update README 15 years ago
README.AVR32-port-muxing c46bf09e0b doc: Fix some typos in different files 12 years ago
README.JFFS2 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
README.JFFS2_NAND 445093d175 Fix "par[t]ition" typo. 14 years ago
README.LED ea0364f1bb Move lib_$ARCH directories to arch/$ARCH/lib 14 years ago
README.LED_display e03e4b7312 led_display: remove unused DISPLAY_MARK define 13 years ago
README.MPC866 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
README.Modem 8bde7f776c * Code cleanup: 21 years ago
README.N1213 afc1ce8288 doc/README: documents and readme for NDS32 arch 12 years ago
README.NDS32 afc1ce8288 doc/README: documents and readme for NDS32 arch 12 years ago
README.NetConsole 2c8fe5120f net: Make the netconsole buffer size configurable 11 years ago
README.OFT f013dacf0a Code cleanup, especially MIPS for GCC 4.x 18 years ago
README.POST 9d921f19b3 post/i2c: Add ability to ignore I2C devices 13 years ago
README.SNTP c46bf09e0b doc: Fix some typos in different files 12 years ago
README.SPL c57b953da9 SPL: Add support for loading image from ram in SPL. 11 years ago
README.VLAN a3d991bd0d Patches by Pantelis Antoniou, 30 Mar 2004: 20 years ago
README.VSC3316-3308 aa42cb71fa board/freescale/common: VSC3316/VSC3308 initialization code 11 years ago
README.ag102 b9725ae3f3 board/adp-ag102: add configuration of adp-ag102 12 years ago
README.arm-caches 46a6d51c82 cache: add ALLOC_CACHE_ALIGN_BUFFER macro 12 years ago
README.arm-relocation cd6881b519 Minor coding style cleanup. 13 years ago
README.arm-unaligned-accesses b823fd9ba5 ARM: prevent misaligned array inits 11 years ago
README.at91 c46bf09e0b doc: Fix some typos in different files 12 years ago
README.at91-soc 04e5ae7931 Minor coding style cleanup. 12 years ago
README.atmel_mci c9abb4260c ATMEL: remove old atmel_mci driver 12 years ago
README.atmel_pmecc bdfd59aa0f at91: atmel_nand: Update driver to support Programmable Multibit ECC controller 11 years ago
README.autoboot f2302d4430 Fix merge problems 16 years ago
README.bedbug a47a12becf Move arch/ppc to arch/powerpc 14 years ago
README.bitbangMII 4946775c6d Coding Style cleanup; update CHANGELOG, prepare -rc1 14 years ago
README.blackfin 4c58eb5552 add some more Blackfin docs 16 years ago
README.bus_vcxk 10c7604d02 Prepare 2009.08-rc1 15 years ago
README.cfi 466f0137e8 mpc5200, digsy_mtc: add support for rev5 board version 13 years ago
README.commands 6c7c946cad common: Convert the U-Boot commands to LG-arrays 11 years ago
README.commands.itest cd0a9de68b * Patch by Laurent Mohin, 10 Feb 2004: 20 years ago
README.commands.spl 1648a37505 Add cmd_spl command 12 years ago
README.console 7de17781a4 doc: provide a correct board_init_r definition path 12 years ago
README.davinci 3d2c8e6c7f arm, da850evm: Add an SPL for SPI boot 12 years ago
README.davinci.nand_spl 4dd834906d arm, davinci: add cam_enc_4xx support 12 years ago
README.designware_eth 5b1b1883ff SPEAr : Network driver support added 14 years ago
README.dns 28958b8bea Coding Style cleanup; update CHANGELOG. 15 years ago
README.drivers.eth ecee9324d7 Program net device MAC addresses after initializing 14 years ago
README.enetaddr c88ef3c12d net: allow setting env enetaddr from net device setting 12 years ago
README.ext4 03e2ecf6b8 fs: separate CONFIG_FS_{FAT, EXT4} from CONFIG_CMD_{FAT, EXT*} 11 years ago
README.fdt-control eea63e05d0 fdt: ARM: Add fdtcontroladdr to set device tree address in environment 12 years ago
README.fsl-ddr 89b7809568 powerpc/mpc8xxx: Add auto select bank interleaving mode 11 years ago
README.fsl-hwconfig 636c316f9b powerpc/85xx: Specify hwconfig usage for USB controller 13 years ago
README.generic_usb_ohci 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
README.hwconfig ab68f4dd19 doc: add README for CONFIG_HWCONFIG option 14 years ago
README.idma2intr 3e38691e8f * Patch by Arun Dharankar, 4 Apr 2003: 21 years ago
README.imx31 77a0355f60 move README.imx31 to doc/ and merge with README.mx31 15 years ago
README.imx5 9db1bfa110 ARM: MX51: PLL errata workaround 12 years ago
README.imximage 19b409c007 imximage: Add support for i.MX6 12 years ago
README.iomux 16a28ef219 IOMUX: Add console multiplexing support. 15 years ago
README.kwbimage 1ff1f89c57 cosmetic: Better explain how to use the kirkwood kwbimage.cfg file. 11 years ago
README.link-local 3fe63839f3 Minor Coding Style cleanup 12 years ago
README.lynxkdi 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
README.m28 3a0398d7b9 mxs: reorganize source directory for easy sharing of code in i.MXS SoCs 11 years ago
README.m54418twr 186fc4db26 ColdFire: Add Freescale MCF54418TWR ColdFire development board support 11 years ago
README.m68k 1626308797 cleanup: Fix typos and misspellings in various files. 13 years ago
README.marubun-pcmcia 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
README.menu 317d6c57d5 common, menu: show menu on startup if CONFIG_MENU_SHOW is defined 12 years ago
README.mini2440 b77026225a ARM : Add support for MINI2440 (s3c2440). 11 years ago
README.mips 4a1f11b45a doc/README.mips: Add MIPS notes 16 years ago
README.mpc5xx a47a12becf Move arch/ppc to arch/powerpc 14 years ago
README.mpc74xx e221174377 Initial revision 21 years ago
README.mpc83xx.ddrecc 47e8bc8467 mpc83xx: Correct the README for DDR ECC 17 years ago
README.mpc83xxads f901a83b70 Add support for ep8248 board 19 years ago
README.mpc85xx c97cd1ba48 spl/85xx: new SPL support 11 years ago
README.mpc85xx-spin-table ffd06e0231 powerpc/mpc85xx: Rewrite spin table to comply with ePAPR v1.1 11 years ago
README.mpc85xxads c46bf09e0b doc: Fix some typos in different files 12 years ago
README.mpc85xxcds d9b94f28a4 * Patch by Jon Loeliger, 2005-05-05 19 years ago
README.mx28_common 9de1c22f80 mx28: Fix elftosb source link in README.mx28_common 12 years ago
README.mx28evk 3a0398d7b9 mxs: reorganize source directory for easy sharing of code in i.MXS SoCs 11 years ago
README.nand 3287f6d385 nand: Add torture feature 11 years ago
README.nand-boot-ppc440 8fbc985bda Fix some typos 16 years ago
README.ne2000 8ed9604613 * Patches by Richard Woodruff, 01 Oct 2004: 19 years ago
README.nokia_rx51 ed407be53e New board support: Nokia RX-51 aka N900 11 years ago
README.ns9750dev 80885a9d52 * Patch by Markus Pietrek, 24 Feb 2004: 20 years ago
README.omap-ulpi-viewport 928c4bdf9b usb: ulpi: Add omap-ulpi-view port support 12 years ago
README.omap3 84d7a0171f OMAP3: mvblx: Initial support for mvBlueLYNX-X 12 years ago
README.pblimage 5d898a00f3 powerpc/CoreNet: add tool to support pbl image build. 11 years ago
README.ppc440 24956642ef Remove unused CONFIG_SERIAL_SOFTWARE_FIFO feature 13 years ago
README.pxe a655938a93 PXE: FDT: Add support for fdt in PXE 11 years ago
README.rmobile 5977503a81 rmobile: Add README 11 years ago
README.s5pc1xx abbe18c353 s5pc1xx: update the README file 14 years ago
README.sata e8f7ba404f doc: english polishing for README.sata 16 years ago
README.sched 3e38691e8f * Patch by Arun Dharankar, 4 Apr 2003: 21 years ago
README.scrapyard 1b0757eced PPC: remove dead boards (AMX860, c2mon, ETX094, IAD210, LANTEC, SCM) 11 years ago
README.serial_multi 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
README.sh c133c1fb0b sh: Add support Renesas Solutions R7780MP 16 years ago
README.sha1 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
README.silent 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
README.spear f273e5b2a6 SPEAr: Add configuration options for spear3xx and spear6xx boards 12 years ago
README.srio-pcie-boot-corenet fc54c7fa0a powerpc/corenet_ds: Update README and README.srio-pcie-boot-corenet 11 years ago
README.standalone afc1ce8288 doc/README: documents and readme for NDS32 arch 12 years ago
README.switch_config 14b9f16c40 arm,davinci: update for enbw_cmc board 12 years ago
README.t4240qds ee52b188ca powerpc/t4qds: Add T4QDS board 11 years ago
README.ubi ae8082c7e0 Add UBI README 13 years ago
README.ublimage 04e5ae7931 Minor coding style cleanup. 12 years ago
README.update 7130a579fd add command fitupd to run an update from a FIT image 13 years ago
README.usb b3f44c21ea common: cosmetic: CONFIG_BOOTFILE checkpatch compliance 12 years ago
README.video a5dbdc81ea video: parse the video-mode environment variable 13 years ago
README.zfs 4d3c95f5ea zfs: Add ZFS filesystem support 11 years ago
feature-removal-schedule.txt 1cdabc4bc7 miiphy: Note that miiphy_* API is deprecated 12 years ago
git-mailrc b4a2e43570 git-mailrc: Change x86 maintainer to Simon 11 years ago
kwboot.1 d131ad68c6 kwboot: boot kirkwood SoCs over a serial link 12 years ago
mkimage.1 49fbf4371e doc/mkimage.1: Fix -D/-f options formatting 12 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