Simon Glass 269d2d14d2 doc: Add mention of the /config binding 2 years ago
..
SPI 5e61c4e89d sandbox: update documents regarding spi_sf 3 years ago
SPL f2d7a36ec2 Rename SPL_ETH_SUPPORT to SPL_ETH 2 years ago
android bc820d5bcc fastboot: add UUU command UCmd and ACmd support 3 years ago
api a6aaeb2a91 doc: fix doc/develop/logging.rst 3 years ago
arch 85c052cc48 doc: x86: Update SeaBIOS build instructions 2 years ago
board 61902123d4 doc: board: toradex: fix file names 2 years ago
build 5f6efc35c1 doc: add pkg-config to the build dependencies 2 years ago
chromium 4db474aea0 doc: Update documentation for cros-2021.04 release 2 years ago
develop 269d2d14d2 doc: Add mention of the /config binding 2 years ago
device-tree-bindings 19e699fb2b doc: Complete the list of available runtime-config options 2 years ago
imx f1991bdf97 doc: move i.MX7D/i.MX8MM A/B booting to board specific 2 years ago
media 656d8da9d2 doc: Remove duplicated documentation directory 4 years ago
mvebu c511147cf4 doc: cmd: bubt: drop duplicated text 5 years ago
sphinx b2a1d6b2c4 doc: require Sphinx 2.4.4 2 years ago
sphinx-static 656d8da9d2 doc: Remove duplicated documentation directory 4 years ago
uImage.FIT 62b27a561c mkimage: use environment variable MKIMAGE_SIGN_PIN to set pin for OpenSSL Engine 2 years ago
usage b817959bd4 doc: usage: mmc: Document usage of speed mode in "mmc dev" and "mmc rescan" 2 years ago
.gitignore 98c0d49c3d doc: Add .gitignore for the Sphinx build output directory 4 years ago
I2C_Edge_Conditions 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
Makefile 89a5fbbea1 doc: handle 'make htmldocs' warnings as errors 2 years ago
README.440-DDR-performance a187559e3d Use correct spelling of "U-Boot" 8 years ago
README.AMCC-eval-boards-cleanup 8a316c9b62 Major cleanup for AMCC PPC4xx eval boards. 18 years ago
README.Heterogeneous-SoCs b8bf0adc12 powerpc/mpc85xx: Add DSP side awareness for Freescale Heterogeneous SoCs 9 years ago
README.JFFS2 59e12a4a8c fs: Kconfig: Add a separate option for FS_JFFS2 7 years ago
README.JFFS2_NAND b2482dffa0 README: Drop unused JFFS2 options 7 years ago
README.LED 5b8e76c35e powerpc, 8xx: remove support for 8xx 6 years ago
README.OFT f013dacf0a Code cleanup, especially MIPS for GCC 4.x 18 years ago
README.POST bb5a2cf9f9 treewide: convert bd_t to struct bd_info manually 3 years ago
README.SNTP c46bf09e0b doc: Fix some typos in different files 12 years ago
README.SPL 975e7cf301 i2c: Rename SPL/TPL_I2C_SUPPORT to I2C 2 years ago
README.TPL 32f2ca2a7e cosmetic: Fix spelling and whitespace errors 4 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.arm-caches 421044b183 doc: ARM: Use the right function name 9 years ago
README.arm-relocation bb5a2cf9f9 treewide: convert bd_t to struct bd_info manually 3 years ago
README.armada-secureboot a1b6b0a9c1 arm: mvebu: Implement secure boot 7 years ago
README.asn1 e2c04fafc8 doc: add README for asn1 compiler and decoder 4 years ago
README.atmel_mci bb5a2cf9f9 treewide: convert bd_t to struct bd_info manually 3 years ago
README.atmel_pmecc 49ad40298c ARM: at91: Convert SPL_GENERATE_ATMEL_PMECC_HEADER to Kconfig 5 years ago
README.autoboot 8fc31e23aa autoboot: Rename CONFIG_MENUKEY to CONFIG_AUTOBOOT_MENUKEY 4 years ago
README.bcm7xxx 894c3ad27f board: arm: Add support for Broadcom BCM7445 5 years ago
README.bcmns3 89bb20bd38 doc: add README doc for bcmns3 platform 3 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.bootcount df928f8549 bootcount_ext: Add flag to enable/disable bootcount 4 years ago
README.boston ad8783cb1c boston: Introduce support for the MIPS Boston development board 7 years ago
README.bus_vcxk 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 6 years ago
README.cfi 66723eda4e doc/README.cfi: Update code snippet, and add example. 7 years ago
README.commands.itest cd0a9de68b * Patch by Laurent Mohin, 10 Feb 2004: 20 years ago
README.commands.spl 1cc0a9f496 Fix various typos, scattered over the code. 8 years ago
README.console bb5a2cf9f9 treewide: convert bd_t to struct bd_info manually 3 years ago
README.davinci 5f1600e03e README: davinci: Clarify when SPL is used and the target devices. 3 years ago
README.davinci.nand_spl 4dd834906d arm, davinci: add cam_enc_4xx support 12 years ago
README.dfutftp a2f0b504f4 cmd: drop fitupd command 3 years ago
README.displaying-bmps c088048533 lcd: implement a callback for splashimage 11 years ago
README.distro 3af8d1c44c doc/README.distro: kernel_comp_addr_r 3 years ago
README.dns 28958b8bea Coding Style cleanup; update CHANGELOG. 14 years ago
README.enetaddr fb8977c5be net: Always build the string_to_enetaddr() helper 4 years ago
README.esbc_validate 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 6 years ago
README.ext4 3d22bae57f fs: Migrate ext4 to Kconfig 6 years ago
README.falcon 259bd3a0d1 doc: Update parallel NOR flash related information in README.falcon 4 years ago
README.fec_mxc 0750701a3f driver/net/fec: support fixed speed connection 7 years ago
README.fsl-clk 7826669df8 doc: restore doc/README.fsl-clk 6 years ago
README.fsl-ddr eb118807a4 driver/ddr/fsl: Add address parity support for DDR4 UDIMM/discrete 8 years ago
README.fsl-dpaa e82973414d armv8/ls1043a: Add Fman support 8 years ago
README.fsl-esdhc 39913acedd Move eSDHC adapter card identification to board files 3 years ago
README.fsl-hwconfig 636c316f9b powerpc/85xx: Specify hwconfig usage for USB controller 12 years ago
README.fsl-trustzone-components 449372148f armv8: LS2080A: Rename LS2085A to reflect LS2080A 8 years ago
README.fsl_iim 0f67e09e9e Add fsl_iim driver 11 years ago
README.fuse ccca7dfd02 Add fuse API and commands 11 years ago
README.generic-board bb5a2cf9f9 treewide: convert bd_t to struct bd_info manually 3 years ago
README.generic_usb_ohci 2a766db11a doc: Fix outdated ohci board hook documentation 5 years ago
README.gpio 6a0388c5b1 dt-bindings: gpio: alignment with kernel v5.3 4 years ago
README.gpt 653cd92d66 cmd: gpt: Add option to write GPT partitions to environment variable 3 years ago
README.hwconfig 1bce2aeb6f Cosmetic: Fix a number of typos, no functional changes. 10 years ago
README.i2c b725dc458f i2c: Add a mux for GPIO-based I2C bus arbitration 8 years ago
README.iomux 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 6 years ago
README.kconfig c21fc7e223 treewide: fix "followings" to "following" 7 years ago
README.kwbimage adbba99606 doc: fix documentation of out-of-tree build 9 years ago
README.link-local bc0571fc10 net: cosmetic: Fix checkpatch.pl failures in net.c 9 years ago
README.lynxkdi 6d0f6bcf33 rename CFG_ macros to CONFIG_SYS 15 years ago
README.malta a187559e3d Use correct spelling of "U-Boot" 8 years ago
README.marvell c5c4b69857 Revert "arm64: dts: a3720: add support for espressobin with populated emmc" 3 years ago
README.mediatek 3ba286e0e8 doc: README.mediatek: Add a simple README for MediaTek 5 years ago
README.memory-test a2681707b2 Feature Removal: disable "mtest" command by default 11 years ago
README.mpc74xx e221174377 Initial revision 21 years ago
README.mpc83xx.ddrecc 47e8bc8467 mpc83xx: Correct the README for DDR ECC 16 years ago
README.mpc83xxads b43957baf7 README: Drop CONFIG_MPC8349ADS 7 years ago
README.mpc85xx bef1845404 freescale/powerpc: Rename the config CONFIG_SECURE_BOOT name 4 years ago
README.mpc85xx-sd-spi-boot 789460c914 powerpc: P2010: Drop configuration for P2010 7 years ago
README.mpc85xx-spin-table a187559e3d Use correct spelling of "U-Boot" 8 years ago
README.mpc85xxcds a187559e3d Use correct spelling of "U-Boot" 8 years ago
README.multi-dtb-fit eeda3d7497 doc: multi-dtb-fit: Remove double underscores 3 years ago
README.mxc_ocotp 0454e0c420 arm: vf610: Add Vybrid VF610 to mxc_ocotp document 11 years ago
README.nand a430fa06a4 mtd: move NAND files into a raw/ subdirectory 5 years ago
README.nand-boot-ppc440 8fbc985bda Fix some typos 16 years ago
README.nokia_rx51 cc434fccba Nokia RX-51: Add support for booting kernel in zImage format 2 years ago
README.odroid 9c15044ae4 odroid: Update README.odroid for support of Odroid HC1 5 years ago
README.omap-ulpi-viewport 928c4bdf9b usb: ulpi: Add omap-ulpi-view port support 12 years ago
README.omap3 d78b9df763 logicpd: Drop omap3 zoom1 3 years ago
README.pblimage 262737f05a powerpc/tool/pbl: fix pbl image compiling process 10 years ago
README.pcap dc625d04d2 doc: pcap: add pcap cmd documentation 4 years ago
README.plan9 eeaef5e430 cmd_bootm: Add command line arguments to Plan 9 10 years ago
README.power-framework ccfc89cb16 doc:power:pmic: Add doc entry for PMIC(v2) framework 10 years ago
README.pxe 69076dff22 cmd: pxe: add support for FDT overlays 3 years ago
README.ramboot-ppc85xx 830fc1bfe7 powerpc: mpc85xx: Convert CONFIG_SYS_CCSRBAR_DEFAULT to Kconfig option 7 years ago
README.rmobile c4ea43d12f ARM: rmobile: Add R8A77965 M3NULCB support 5 years ago
README.rockchip 1cf99b3626 doc: rockchip: Remove list of supported boards 3 years ago
README.rockusb f68c8e827c usb: rockchip: implement K_FW_LBA_ERASE_10 command 5 years ago
README.s5p4418 b39cacc268 arm: add (default) config for nanopi2 board 3 years ago
README.s5pc1xx abbe18c353 s5pc1xx: update the README file 14 years ago
README.sata a187559e3d Use correct spelling of "U-Boot" 8 years ago
README.sched 3e38691e8f * Patch by Arun Dharankar, 4 Apr 2003: 21 years ago
README.scrapyard 4a7cf0fd2b scrapyard: Delete this file and script 4 years ago
README.semihosting 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 6 years ago
README.serial_multi 064b55cfcb powerpc, 5xxx, 512x: remove support for mpc5xxx and mpc512x 6 years ago
README.sha1 6de80f2196 Drop references to MAKEALL in the documentation 7 years ago
README.silent 7e15638d60 Convert CONFIG_SYS_DEVICE_NULLDEV to Kconfig 3 years ago
README.socfpga 5c0adb0a71 arm: socfpga: arria10: Add qts-filter for Arria10 socfpga 3 years ago
README.splashprepare 3d92f31762 splash: Use splashfile instead of location->name 4 years ago
README.srio-pcie-boot-corenet 5a516748a8 powerpc/doc: Update the README.srio-pcie-boot-corenet 10 years ago
README.standalone 0914011310 command: Remove the cmd_tbl_t typedef 3 years ago
README.t1040-l2switch aae0e68909 drivers: net: vsc9953: Add LAG support 8 years ago
README.tee 1ea3fbe318 Documentation: tee uclass and op-tee driver 5 years ago
README.ti-secure 74ee9dc502 doc: Update info on using K3 secure devices 5 years ago
README.ubi e6661cf767 ubi: Add "skipcheck" command to set/clear this bit in the UBI volume hdr 4 years ago
README.ubispl 6f4e7d3c75 spl: Lightweight UBI and UBI fastmap support 7 years ago
README.ublimage 04e5ae7931 Minor coding style cleanup. 12 years ago
README.udp b43ea1bf18 net: add a generic udp protocol 3 years ago
README.unaligned-memory-access.txt be9445c0d4 doc: Fix comparison operator 9 years ago
README.uniphier 7ef5b1e7ed ARM: uniphier: enable distro boot 5 years ago
README.update a2f0b504f4 cmd: drop fitupd command 3 years ago
README.usb 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 6 years ago
README.vf610 24e8bee508 arm: vf610: Add Vybrid VF610 CPU support 11 years ago
README.video 020fa32dc3 video: Add information about using TrueType fonts 5 years ago
README.vxworks 1e26f64888 bootm: vxworks: Support Linux compatible standard DTB for ARM and PPC 4 years ago
README.watchdog 1473f6ac88 arm: at91: wdt: Convert watchdog driver to dm/dt 5 years ago
README.zfs 93e1459641 Coding Style cleanup: replace leading SPACEs by TABs 10 years ago
bounces e11aa602ab patman: add support for omitting bouncing addresses 6 years ago
conf.py 00e80da9f5 doc: fix Latex margins 2 years ago
feature-removal-schedule.txt 702de89cc6 treewide: mem: Move mtest related defines to Kconfig 4 years ago
git-mailrc f91c3aa07e MAINTAINERS: Update ARM TI entry 2 years ago
index.rst f1991bdf97 doc: move i.MX7D/i.MX8MM A/B booting to board specific 2 years ago
kwboot.1 a6f70a3d14 Fix spelling of "transferred". 8 years ago
mkimage.1 152b246298 mkimage: Allow updating the FIT timestamp 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