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User:Banistpw

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Revision as of 03:39, 27 March 2010 by Banistpw (Talk | contribs)

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Paul Banister

Senior CS/SE

Very familiar but no expert with both Linux and C/C++. I hope to contribute good coding practices and design to a team more familiar with lower level background.

Working on the ECE597: MythTV/DSP Pico Projector project for ECE597.

Listings

Number Page Caption Listing
2-4 2-21 Hello, World Wmbedded Style
#include <stdio.h>

int bss_var;        /* Uninitialized global variable */

int data_var = 1;   /* Initialized global variable */

int main(int argc, char **argv)
{
  void *stack_var;            /* Local variable on the stack */
  
  stack_var = (void *)main;   /* Don't let the compiler */
                              /* optimize it out */

  printf("Hello, World! Main is executing at %p\n", stack_var);
  printf("This address (%p) is in our stack frame\n", &stack_var);

  /* bss section contains uninitialized data */
  printf("This address (%p) is in our bss section\n", &bss_var);

  /* data section contains initializated data */
  printf("This address (%p) is in our data section\n", &data_var);

  return 0;
}
4-3 4-15 Kernel Subdirectory
banistpw@Kratos:/dump/hw/oe$ ls -l linux-omap-2.6/arch/arm/mach-ixp4xx/
total 212
-rwxrwx--x 1 brian elinux  1977 2010-03-11 23:14 avila-pci.c
-rwxrwx--x 1 brian elinux  4658 2010-03-11 23:14 avila-setup.c
-rwxrwx--x 1 brian elinux 12029 2010-03-11 23:14 common.c
-rwxrwx--x 1 brian elinux 12910 2010-03-11 23:14 common-pci.c
-rwxrwx--x 1 brian elinux  1599 2010-03-11 23:14 coyote-pci.c
-rwxrwx--x 1 brian elinux  3452 2010-03-11 23:14 coyote-setup.c
-rwxrwx--x 1 brian elinux  2034 2010-03-11 23:14 dsmg600-pci.c
-rwxrwx--x 1 brian elinux  7394 2010-03-11 23:14 dsmg600-setup.c
-rwxrwx--x 1 brian elinux  1748 2010-03-11 23:14 fsg-pci.c
-rwxrwx--x 1 brian elinux  6795 2010-03-11 23:14 fsg-setup.c
-rwxrwx--x 1 brian elinux  1490 2010-03-11 23:14 gateway7001-pci.c
-rwxrwx--x 1 brian elinux  2646 2010-03-11 23:14 gateway7001-setup.c
-rwxrwx--x 1 brian elinux 12465 2010-03-11 23:14 goramo_mlr.c
-rwxrwx--x 1 brian elinux  2397 2010-03-11 23:14 gtwx5715-pci.c
-rwxrwx--x 1 brian elinux  4738 2010-03-11 23:14 gtwx5715-setup.c
drwxrwx--x 3 brian elinux  4096 2010-03-11 23:14 include
-rwxrwx--x 1 brian elinux  1892 2010-03-11 23:14 ixdp425-pci.c
-rwxrwx--x 1 brian elinux  7610 2010-03-11 23:14 ixdp425-setup.c
-rwxrwx--x 1 brian elinux  1354 2010-03-11 23:14 ixdpg425-pci.c
-rwxrwx--x 1 brian elinux 21565 2010-03-11 23:14 ixp4xx_npe.c
-rwxrwx--x 1 brian elinux  9350 2010-03-11 23:14 ixp4xx_qmgr.c
-rwxrwx--x 1 brian elinux  6431 2010-03-11 23:14 Kconfig
-rwxrwx--x 1 brian elinux  1319 2010-03-11 23:14 Makefile
-rwxrwx--x 1 brian elinux    57 2010-03-11 23:14 Makefile.boot
-rwxrwx--x 1 brian elinux  1869 2010-03-11 23:14 nas100d-pci.c
-rwxrwx--x 1 brian elinux  8127 2010-03-11 23:14 nas100d-setup.c
-rwxrwx--x 1 brian elinux  1666 2010-03-11 23:14 nslu2-pci.c
-rwxrwx--x 1 brian elinux  7147 2010-03-11 23:14 nslu2-setup.c
-rwxrwx--x 1 brian elinux  1468 2010-03-11 23:14 wg302v2-pci.c
-rwxrwx--x 1 brian elinux  2585 2010-03-11 23:14 wg302v2-setup.c
4-4 4-17 USB in Linux 2.6 .config
banistpw@Kratos:/dump/hw/oe/linux-omap-2.6$ cat .config | grep USB
# CONFIG_USB_ZD1201 is not set
# USB Network Adapters
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_USBNET is not set
# CONFIG_I2C_TINY_USB is not set
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=y
# CONFIG_USB_DEBUG is not set
# CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set
# Miscellaneous USB options
CONFIG_USB_DEVICEFS=y
CONFIG_USB_DEVICE_CLASS=y
# CONFIG_USB_DYNAMIC_MINORS is not set
CONFIG_USB_SUSPEND=y
CONFIG_USB_OTG=y
# CONFIG_USB_OTG_WHITELIST is not set
# CONFIG_USB_OTG_BLACKLIST_HUB is not set
CONFIG_USB_MON=y
# CONFIG_USB_WUSB is not set
# CONFIG_USB_WUSB_CBAF is not set
# USB Host Controller Drivers
# CONFIG_USB_C67X00_HCD is not set
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
# CONFIG_USB_EHCI_TT_NEWSCHED is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_ISP1760_HCD is not set
# CONFIG_USB_ISP1362_HCD is not set
# CONFIG_USB_OHCI_HCD is not set
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_HWA_HCD is not set
CONFIG_USB_MUSB_HDRC=y
CONFIG_USB_MUSB_SOC=y
# OMAP 343x high speed USB support
# CONFIG_USB_MUSB_HOST is not set
# CONFIG_USB_MUSB_PERIPHERAL is not set
CONFIG_USB_MUSB_OTG=y
CONFIG_USB_GADGET_MUSB_HDRC=y
CONFIG_USB_MUSB_HDRC_HCD=y
# CONFIG_MUSB_PIO_ONLY is not set
CONFIG_USB_INVENTRA_DMA=y
# CONFIG_USB_TI_CPPI_DMA is not set
# CONFIG_USB_MUSB_DEBUG is not set
# USB Device Class drivers
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set
# CONFIG_USB_WDM is not set
# CONFIG_USB_TMC is not set
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
# also be needed; see USB_STORAGE Help for more info
# CONFIG_USB_STORAGE is not set
# CONFIG_USB_LIBUSUAL is not set
# USB Imaging devices
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set
# USB port drivers
# CONFIG_USB_SERIAL is not set
# USB Miscellaneous drivers
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_SEVSEG is not set
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_LED is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
# CONFIG_USB_APPLEDISPLAY is not set
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
# CONFIG_USB_TEST is not set
# CONFIG_USB_ISIGHTFW is not set
CONFIG_USB_GADGET=y
# CONFIG_USB_GADGET_DEBUG is not set
# CONFIG_USB_GADGET_DEBUG_FILES is not set
CONFIG_USB_GADGET_VBUS_DRAW=2
CONFIG_USB_GADGET_SELECTED=y
# CONFIG_USB_GADGET_AT91 is not set
# CONFIG_USB_GADGET_ATMEL_USBA is not set
# CONFIG_USB_GADGET_FSL_USB2 is not set
# CONFIG_USB_GADGET_LH7A40X is not set
# CONFIG_USB_GADGET_OMAP is not set
# CONFIG_USB_GADGET_PXA25X is not set
# CONFIG_USB_GADGET_R8A66597 is not set
# CONFIG_USB_GADGET_PXA27X is not set
# CONFIG_USB_GADGET_S3C_HSOTG is not set
# CONFIG_USB_GADGET_IMX is not set
# CONFIG_USB_GADGET_S3C2410 is not set
# CONFIG_USB_GADGET_M66592 is not set
# CONFIG_USB_GADGET_AMD5536UDC is not set
# CONFIG_USB_GADGET_FSL_QE is not set
# CONFIG_USB_GADGET_CI13XXX is not set
# CONFIG_USB_GADGET_NET2280 is not set
# CONFIG_USB_GADGET_GOKU is not set
# CONFIG_USB_GADGET_LANGWELL is not set
# CONFIG_USB_GADGET_DUMMY_HCD is not set
CONFIG_USB_GADGET_DUALSPEED=y
# CONFIG_USB_ZERO is not set
# CONFIG_USB_AUDIO is not set
CONFIG_USB_ETH=m
CONFIG_USB_ETH_RNDIS=y
# CONFIG_USB_ETH_EEM is not set
# CONFIG_USB_GADGETFS is not set
# CONFIG_USB_FILE_STORAGE is not set
# CONFIG_USB_MASS_STORAGE is not set
# CONFIG_USB_G_SERIAL is not set
# CONFIG_USB_MIDI_GADGET is not set
# CONFIG_USB_G_PRINTER is not set
# CONFIG_USB_CDC_COMPOSITE is not set
# CONFIG_USB_G_NOKIA is not set
# CONFIG_USB_G_MULTI is not set
CONFIG_USB_OTG_UTILS=y
# CONFIG_USB_GPIO_VBUS is not set
# CONFIG_USB_ULPI is not set
CONFIG_TWL4030_USB=y
# CONFIG_NOP_USB_XCEIV is not set
4-5 4-21 Linux autoconf.h
banistpw@Kratos:/dump/hw/oe/linux-omap-2.6$ cat include/generated/autoconf.h | grep CONFIG_USB
#define CONFIG_USB_MUSB_HDRC 1
#define CONFIG_USB_ETH_RNDIS 1
#define CONFIG_USB_GADGET_MUSB_HDRC 1
#define CONFIG_USB_ARCH_HAS_EHCI 1
#define CONFIG_USB_GADGET_VBUS_DRAW 2
#define CONFIG_USB_OTG_UTILS 1
#define CONFIG_USB_ARCH_HAS_OHCI 1
#define CONFIG_USB_ETH_MODULE 1
#define CONFIG_USB_MUSB_HDRC_HCD 1
#define CONFIG_USB_MON 1
#define CONFIG_USB_OTG 1
#define CONFIG_USB_EHCI_ROOT_HUB_TT 1
#define CONFIG_USB_SUSPEND 1
#define CONFIG_USB_SUPPORT 1
#define CONFIG_USB_EHCI_HCD 1
#define CONFIG_USB_DEVICEFS 1
#define CONFIG_USB_GADGET_SELECTED 1
#define CONFIG_USB_MUSB_SOC 1
#define CONFIG_USB_MUSB_OTG 1
#define CONFIG_USB_DEVICE_CLASS 1
#define CONFIG_USB_ARCH_HAS_HCD 1
#define CONFIG_USB_INVENTRA_DMA 1
#define CONFIG_USB 1
#define CONFIG_USB_GADGET_DUALSPEED 1
#define CONFIG_USB_GADGET 1
4-5 4-22 Makefile targets
banistpw@Kratos:/dump/hw/oe/linux-omap-2.6$ make ARCH=arm help
Cleaning targets:
  clean		  - Remove most generated files but keep the config and
                    enough build support to build external modules
  mrproper	  - Remove all generated files + config + various backup files
  distclean	  - mrproper + remove editor backup and patch files

Configuration targets:
  config	  - Update current config utilising a line-oriented program
  menuconfig	  - Update current config utilising a menu based program
  xconfig	  - Update current config utilising a QT based front-end
  gconfig	  - Update current config utilising a GTK based front-end
  oldconfig	  - Update current config utilising a provided .config as base
  localmodconfig  - Update current config disabling modules not loaded
  localyesconfig  - Update current config converting local mods to core
  silentoldconfig - Same as oldconfig, but quietly, additionally update deps
  randconfig	  - New config with random answer to all options
  defconfig	  - New config with default answer to all options
  allmodconfig	  - New config selecting modules when possible
  allyesconfig	  - New config where all options are accepted with yes
  allnoconfig	  - New config where all options are answered with no

Other generic targets:
  all		  - Build all targets marked with [*]
* vmlinux	  - Build the bare kernel
* modules	  - Build all modules
  modules_install - Install all modules to INSTALL_MOD_PATH (default: /)
  firmware_install- Install all firmware to INSTALL_FW_PATH
                    (default: $(INSTALL_MOD_PATH)/lib/firmware)
  dir/            - Build all files in dir and below
  dir/file.[ois]  - Build specified target only
  dir/file.ko     - Build module including final link
  modules_prepare - Set up for building external modules
  tags/TAGS	  - Generate tags file for editors
  cscope	  - Generate cscope index
  kernelrelease	  - Output the release version string
  kernelversion	  - Output the version stored in Makefile
  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH
                    (default: /dump/hw/oe/linux-omap-2.6/usr)

Static analysers
  checkstack      - Generate a list of stack hogs
  namespacecheck  - Name space analysis on compiled kernel
  versioncheck    - Sanity check on version.h usage
  includecheck    - Check for duplicate included header files
  export_report   - List the usages of all exported symbols
  headers_check   - Sanity check on exported headers
  headerdep       - Detect inclusion cycles in headers

Kernel packaging:
  rpm-pkg         - Build both source and binary RPM kernel packages
  binrpm-pkg      - Build only the binary kernel package
  deb-pkg         - Build the kernel as an deb package
  tar-pkg         - Build the kernel as an uncompressed tarball
  targz-pkg       - Build the kernel as a gzip compressed tarball
  tarbz2-pkg      - Build the kernel as a bzip2 compressed tarball

Documentation targets:
 Linux kernel internal documentation in different formats:
  htmldocs        - HTML
  pdfdocs         - PDF
  psdocs          - Postscript
  xmldocs         - XML DocBook
  mandocs         - man pages
  installmandocs  - install man pages generated by mandocs
  cleandocs       - clean all generated DocBook files

Architecture specific targets (arm):
* zImage        - Compressed kernel image (arch/arm/boot/zImage)
  Image         - Uncompressed kernel image (arch/arm/boot/Image)
* xipImage      - XIP kernel image, if configured (arch/arm/boot/xipImage)
  uImage        - U-Boot wrapped zImage
  bootpImage    - Combined zImage and initial RAM disk
                  (supply initrd image via make variable INITRD=<path>)
  install       - Install uncompressed kernel
  zinstall      - Install compressed kernel
                  Install using (your) ~/bin/installkernel or
                  (distribution) /sbin/installkernel or
                  install to $(INSTALL_PATH) and run lilo

  acs5k_defconfig          - Build for acs5k
  acs5k_tiny_defconfig     - Build for acs5k_tiny
  afeb9260_defconfig       - Build for afeb9260
  am200epdkit_defconfig    - Build for am200epdkit
  am3517_evm_defconfig     - Build for am3517_evm
  ams_delta_defconfig      - Build for ams_delta
  assabet_defconfig        - Build for assabet
  at572d940hfek_defconfig  - Build for at572d940hfek
  at91cap9adk_defconfig    - Build for at91cap9adk
  at91rm9200dk_defconfig   - Build for at91rm9200dk
  at91rm9200ek_defconfig   - Build for at91rm9200ek
  at91sam9260ek_defconfig  - Build for at91sam9260ek
  at91sam9261ek_defconfig  - Build for at91sam9261ek
  at91sam9263ek_defconfig  - Build for at91sam9263ek
  at91sam9g20ek_defconfig  - Build for at91sam9g20ek
  at91sam9rlek_defconfig   - Build for at91sam9rlek
  ateb9200_defconfig       - Build for ateb9200
  badge4_defconfig         - Build for badge4
  bcmring_defconfig        - Build for bcmring
  cam60_defconfig          - Build for cam60
  carmeva_defconfig        - Build for carmeva
  cerfcube_defconfig       - Build for cerfcube
  cm_t35_defconfig         - Build for cm_t35
  cm_x2xx_defconfig        - Build for cm_x2xx
  cm_x300_defconfig        - Build for cm_x300
  colibri_pxa270_defconfig - Build for colibri_pxa270
  colibri_pxa300_defconfig - Build for colibri_pxa300
  collie_defconfig         - Build for collie
  corgi_defconfig          - Build for corgi
  cpu9260_defconfig        - Build for cpu9260
  cpu9g20_defconfig        - Build for cpu9g20
  cpuat91_defconfig        - Build for cpuat91
  csb337_defconfig         - Build for csb337
  csb637_defconfig         - Build for csb637
  da8xx_omapl_defconfig    - Build for da8xx_omapl
  davinci_all_defconfig    - Build for davinci_all
  devkit8000_defconfig     - Build for devkit8000
  dove_defconfig           - Build for dove
  ebsa110_defconfig        - Build for ebsa110
  ecbat91_defconfig        - Build for ecbat91
  edb7211_defconfig        - Build for edb7211
  em_x270_defconfig        - Build for em_x270
  ep93xx_defconfig         - Build for ep93xx
  eseries_pxa_defconfig    - Build for eseries_pxa
  ezx_defconfig            - Build for ezx
  footbridge_defconfig     - Build for footbridge
  fortunet_defconfig       - Build for fortunet
  h3600_defconfig          - Build for h3600
  h5000_defconfig          - Build for h5000
  h7201_defconfig          - Build for h7201
  h7202_defconfig          - Build for h7202
  hackkit_defconfig        - Build for hackkit
  htcherald_defconfig      - Build for htcherald
  igep0020_defconfig       - Build for igep0020
  integrator_defconfig     - Build for integrator
  iop13xx_defconfig        - Build for iop13xx
  iop32x_defconfig         - Build for iop32x
  iop33x_defconfig         - Build for iop33x
  ixp2000_defconfig        - Build for ixp2000
  ixp23xx_defconfig        - Build for ixp23xx
  ixp4xx_defconfig         - Build for ixp4xx
  jornada720_defconfig     - Build for jornada720
  kafa_defconfig           - Build for kafa
  kb9202_defconfig         - Build for kb9202
  kirkwood_defconfig       - Build for kirkwood
  ks8695_defconfig         - Build for ks8695
  lart_defconfig           - Build for lart
  loki_defconfig           - Build for loki
  lpd270_defconfig         - Build for lpd270
  lpd7a400_defconfig       - Build for lpd7a400
  lpd7a404_defconfig       - Build for lpd7a404
  lubbock_defconfig        - Build for lubbock
  lusl7200_defconfig       - Build for lusl7200
  magician_defconfig       - Build for magician
  mainstone_defconfig      - Build for mainstone
  mini2440_defconfig       - Build for mini2440
  msm_defconfig            - Build for msm
  mv78xx0_defconfig        - Build for mv78xx0
  mx1ads_defconfig         - Build for mx1ads
  mx1_defconfig            - Build for mx1
  mx21_defconfig           - Build for mx21
  mx27_defconfig           - Build for mx27
  mx31pdk_defconfig        - Build for mx31pdk
  mx3_defconfig            - Build for mx3
  n770_defconfig           - Build for n770
  n8x0_defconfig           - Build for n8x0
  neocore926_defconfig     - Build for neocore926
  neponset_defconfig       - Build for neponset
  netwinder_defconfig      - Build for netwinder
  netx_defconfig           - Build for netx
  nhk8815_defconfig        - Build for nhk8815
  ns9xxx_defconfig         - Build for ns9xxx
  nuc910_defconfig         - Build for nuc910
  nuc950_defconfig         - Build for nuc950
  nuc960_defconfig         - Build for nuc960
  omap_2430sdp_defconfig   - Build for omap_2430sdp
  omap_3430sdp_defconfig   - Build for omap_3430sdp
  omap_3630sdp_defconfig   - Build for omap_3630sdp
  omap3_beagle_defconfig   - Build for omap3_beagle
  omap3_defconfig          - Build for omap3
  omap3_evm_defconfig      - Build for omap3_evm
  omap3_pandora_defconfig  - Build for omap3_pandora
  omap3_touchbook_defconfig - Build for omap3_touchbook
  omap_4430sdp_defconfig   - Build for omap_4430sdp
  omap_apollon_2420_defconfig - Build for omap_apollon_2420
  omap_generic_1510_defconfig - Build for omap_generic_1510
  omap_generic_1610_defconfig - Build for omap_generic_1610
  omap_generic_1710_defconfig - Build for omap_generic_1710
  omap_generic_2420_defconfig - Build for omap_generic_2420
  omap_h2_1610_defconfig   - Build for omap_h2_1610
  omap_h4_2420_defconfig   - Build for omap_h4_2420
  omap_innovator_1510_defconfig - Build for omap_innovator_1510
  omap_innovator_1610_defconfig - Build for omap_innovator_1610
  omap_ldp_defconfig       - Build for omap_ldp
  omap_osk_5912_defconfig  - Build for omap_osk_5912
  omap_perseus2_730_defconfig - Build for omap_perseus2_730
  omap_zoom2_defconfig     - Build for omap_zoom2
  omap_zoom3_defconfig     - Build for omap_zoom3
  onearm_defconfig         - Build for onearm
  orion5x_defconfig        - Build for orion5x
  overo_defconfig          - Build for overo
  palmte_defconfig         - Build for palmte
  palmtt_defconfig         - Build for palmtt
  palmz71_defconfig        - Build for palmz71
  palmz72_defconfig        - Build for palmz72
  pcm027_defconfig         - Build for pcm027
  picotux200_defconfig     - Build for picotux200
  pleb_defconfig           - Build for pleb
  pnx4008_defconfig        - Build for pnx4008
  pxa168_defconfig         - Build for pxa168
  pxa255-idp_defconfig     - Build for pxa255-idp
  pxa3xx_defconfig         - Build for pxa3xx
  pxa910_defconfig         - Build for pxa910
  qil-a9260_defconfig      - Build for qil-a9260
  realview_defconfig       - Build for realview
  realview-smp_defconfig   - Build for realview-smp
  rpc_defconfig            - Build for rpc
  rx51_defconfig           - Build for rx51
  s3c2410_defconfig        - Build for s3c2410
  s3c6400_defconfig        - Build for s3c6400
  s5pc100_defconfig        - Build for s5pc100
  sam9_l9260_defconfig     - Build for sam9_l9260
  shannon_defconfig        - Build for shannon
  shark_defconfig          - Build for shark
  simpad_defconfig         - Build for simpad
  spitz_defconfig          - Build for spitz
  stmp378x_defconfig       - Build for stmp378x
  stmp37xx_defconfig       - Build for stmp37xx
  sx1_defconfig            - Build for sx1
  tct_hammer_defconfig     - Build for tct_hammer
  trizeps4_defconfig       - Build for trizeps4
  u300_defconfig           - Build for u300
  u8500_defconfig          - Build for u8500
  usb-a9260_defconfig      - Build for usb-a9260
  usb-a9263_defconfig      - Build for usb-a9263
  versatile_defconfig      - Build for versatile
  viper_defconfig          - Build for viper
  xcep_defconfig           - Build for xcep
  yl9200_defconfig         - Build for yl9200
  zeus_defconfig           - Build for zeus

  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build
  make V=2   [targets] 2 => give reason for rebuild of target
  make O=dir [targets] Locate all output files in "dir", including .config
  make C=1   [targets] Check all c source with $CHECK (sparse by default)
  make C=2   [targets] Force check of all c source with $CHECK

Execute "make" or "make all" to build all targets marked with [*] 
For further info see the ./README file
|-
| 4-8
| 4-30
| Snippet from .../arch/arm/Konfig
|<pre>
   205 source "init/Kconfig"
    206 
    207 source "kernel/Kconfig.freezer"
    208 
    209 menu "System Type"
    210 
    211 config MMU
    212         bool "MMU-based Paged Memory Management Support"
    213         default y
    214         help
    215           Select if you want MMU-based virtualised addressing space
    216           support by paged memory management. If unsure, say 'Y'.
    217 
    218 choice
    219         prompt "ARM system type"
    220         default ARCH_VERSATILE
    783 source "arch/arm/mach-ixp4xx/Kconfig"
4-9 4-30 Snippet from .../arch/arm/mach-omap1/Konfig
      1 comment "OMAP Core Type"
      2         depends on ARCH_OMAP1
      3 
      4 config ARCH_OMAP730
      5         depends on ARCH_OMAP1
      6         bool "OMAP730 Based System"
      7         select CPU_ARM926T
      8         select ARCH_OMAP_OTG
4-10 4-32 Customized .config file snippet
 257 CONFIG_MACH_OMAP3_BEAGLE=y
4-11 4-33 .../arch/arm/mach-omap1 Kernel subdirectory
#
# Makefile for the linux kernel.
#

# Common support
obj-y := io.o id.o sram.o irq.o mux.o flash.o serial.o devices.o
obj-y += clock.o clock_data.o opp_data.o

obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o

obj-$(CONFIG_OMAP_MPU_TIMER)	+= time.o
obj-$(CONFIG_OMAP_32K_TIMER)	+= timer32k.o

# Power Management
obj-$(CONFIG_PM) += pm.o sleep.o

# DSP
obj-$(CONFIG_OMAP_MBOX_FWK)	+= mailbox_mach.o
mailbox_mach-objs		:= mailbox.o

i2c-omap-$(CONFIG_I2C_OMAP)		:= i2c.o
obj-y					+= $(i2c-omap-m) $(i2c-omap-y)

led-y := leds.o

# Specific board support
obj-$(CONFIG_MACH_OMAP_H2)		+= board-h2.o board-h2-mmc.o
obj-$(CONFIG_MACH_OMAP_INNOVATOR)	+= board-innovator.o
obj-$(CONFIG_MACH_OMAP_GENERIC)		+= board-generic.o
obj-$(CONFIG_MACH_OMAP_PERSEUS2)	+= board-perseus2.o
obj-$(CONFIG_MACH_OMAP_FSAMPLE)		+= board-fsample.o
obj-$(CONFIG_MACH_OMAP_OSK)		+= board-osk.o
obj-$(CONFIG_MACH_OMAP_H3)		+= board-h3.o board-h3-mmc.o
obj-$(CONFIG_MACH_VOICEBLUE)		+= board-voiceblue.o
obj-$(CONFIG_MACH_OMAP_PALMTE)		+= board-palmte.o
obj-$(CONFIG_MACH_OMAP_PALMZ71)		+= board-palmz71.o
obj-$(CONFIG_MACH_OMAP_PALMTT)		+= board-palmtt.o
obj-$(CONFIG_MACH_NOKIA770)		+= board-nokia770.o
obj-$(CONFIG_MACH_AMS_DELTA)		+= board-ams-delta.o
obj-$(CONFIG_MACH_SX1)			+= board-sx1.o board-sx1-mmc.o
obj-$(CONFIG_MACH_HERALD)		+= board-htcherald.o

ifeq ($(CONFIG_ARCH_OMAP15XX),y)
# Innovator-1510 FPGA
obj-$(CONFIG_MACH_OMAP_INNOVATOR)	+= fpga.o
endif

# LEDs support
led-$(CONFIG_MACH_OMAP_H2)		+= leds-h2p2-debug.o
led-$(CONFIG_MACH_OMAP_H3)		+= leds-h2p2-debug.o
led-$(CONFIG_MACH_OMAP_INNOVATOR)	+= leds-innovator.o
led-$(CONFIG_MACH_OMAP_PERSEUS2)	+= leds-h2p2-debug.o
led-$(CONFIG_MACH_OMAP_OSK)		+= leds-osk.o
obj-$(CONFIG_LEDS)			+= $(led-y)

ifneq ($(CONFIG_FB_OMAP),)
obj-y += lcd_dma.o
endif
5-5 5-5 Assembly file Piggy.S
      1         .section .piggydata,#alloc
      2         .globl  input_data
      3 input_data:
      4         .incbin "arch/arm/boot/compressed/piggy.gzip"
      5         .globl  input_data_end
      6 input_data_end:
5-4 5-18 Console setup Code Snippet
    837 /*
    838  * Set up a list of consoles.  Called from init/main.c
    839  */
    840 static int __init console_setup(char *str)
    841 {
    842         char buf[sizeof(console_cmdline[0].name) + 4]; /* 4 for index */
    843         char *s, *options, *brl_options = NULL;
    844         int idx;
    845 
    846 #ifdef CONFIG_A11Y_BRAILLE_CONSOLE
    847         if (!memcmp(str, "brl,", 4)) {
    848                 brl_options = "";
    849                 str += 4;
    850         } else if (!memcmp(str, "brl=", 4)) {
    851                 brl_options = str + 4;
    852                 str = strchr(brl_options, ',');
    853                 if (!str) {
    854                         printk(KERN_ERR "need port name after brl=\n");
    855                         return 1;
    856                 }
    857                 *(str++) = 0;
    858         }
    859 #endif
5-8 5-19 Family of __setup macro Definitions from init.h
    224 /*
    225  * Only for really core code.  See moduleparam.h for the normal way.
    226  *
    227  * Force the alignment so the compiler doesn't space elements of the
    228  * obs_kernel_param "array" too far apart in .init.setup.
    229  */
    230 #define __setup_param(str, unique_id, fn, early)                        \
    231         static const char __setup_str_##unique_id[] __initconst \
    232                 __aligned(1) = str; \
    233         static struct obs_kernel_param __setup_##unique_id      \
    234                 __used __section(.init.setup)                   \
    235                 __attribute__((aligned((sizeof(long)))))        \
    236                 = { __setup_str_##unique_id, fn, early }
    237 
    238 #define __setup(str, fn)                                        \
    239         __setup_param(str, fn, fn, 0)
    240 
    241 /* NOTE: fn is as per module_param, not __setup!  Emits warning if fn
    242  * returns non-zero. */
    243 #define early_param(str, fn)                                    \
    244         __setup_param(str, fn, fn, 1)
5-6 5-20 Kernel Command Line Processing
    204 extern struct obs_kernel_param __setup_start[], __setup_end[];
    205 
    206 static int __init obsolete_checksetup(char *line)
    207 {
    208         struct obs_kernel_param *p;
    209         int had_early_param = 0;
    210 
    211         p = __setup_start;
    212         do {
    213                 int n = strlen(p->str);
    214                 if (!strncmp(line, p->str, n)) {
    215                         if (p->early) {
    216                                 /* Already done in parse_early_param?
    217                                  * (Needs exact match on param part).
    218                                  * Keep iterating, as we can have early
    219                                  * params and __setups of same names 8( */
    220                                 if (line[n] == '\0' || line[n] == '=')
    221                                         had_early_param = 1;
    222                         } else if (!p->setup_func) {
    223                                 printk(KERN_WARNING "Parameter %s is obsolete,"
    224                                        " ignored\n", p->str);
    225                                 return 1;
    226                         } else if (p->setup_func(line + n))
    227                                 return 1;
    228                 }
    229                 p++;
    230         } while (p < __setup_end);
    231 
    232         return had_early_param;
    233 }
5-7 5-23 Example Initialization Routine
    369 static struct machine_desc * __init setup_machine(unsigned int nr)
    370 {
    371         struct machine_desc *list;
    372 
    373         /*
    374          * locate machine in the list of supported machines.
    375          */
    376         list = lookup_machine_type(nr);
    377         if (!list) {
    378                 printk("Machine configuration botched (nr %d), unable "
    379                        "to continue.\n", nr);
    380                 while (1);
    381         }
    382 
    383         printk("Machine: %s\n", list->name);
    384 
    385         return list;
    386 }
5-8 5-23 Initcall Family of Macros
    170 #define __define_initcall(level,fn,id) \
    171         static initcall_t __initcall_##fn##id __used \
    172         __attribute__((__section__(".initcall" level ".init"))) = fn
    173 
    174 /*
    175  * Early initcalls run before initializing SMP.
    176  *
    177  * Only for built-in code, not modules.
    178  */
    179 #define early_initcall(fn)              __define_initcall("early",fn,early)
    180 
    181 /*
    182  * A "pure" initcall has no dependencies on anything else, and purely
    183  * initializes variables that couldn't be statically initialized.
    184  *
    185  * This only exists for built-in code, not for modules.
    186  */
    187 #define pure_initcall(fn)               __define_initcall("0",fn,0)
    188 
    189 #define core_initcall(fn)               __define_initcall("1",fn,1)
    190 #define core_initcall_sync(fn)          __define_initcall("1s",fn,1s)
    191 #define postcore_initcall(fn)           __define_initcall("2",fn,2)
    192 #define postcore_initcall_sync(fn)      __define_initcall("2s",fn,2s)
    193 #define arch_initcall(fn)               __define_initcall("3",fn,3)
    194 #define arch_initcall_sync(fn)          __define_initcall("3s",fn,3s)
    195 #define subsys_initcall(fn)             __define_initcall("4",fn,4)
    196 #define subsys_initcall_sync(fn)        __define_initcall("4s",fn,4s)
    197 #define fs_initcall(fn)                 __define_initcall("5",fn,5)
    198 #define fs_initcall_sync(fn)            __define_initcall("5s",fn,5s)
    199 #define rootfs_initcall(fn)             __define_initcall("rootfs",fn,rootfs)
    200 #define device_initcall(fn)             __define_initcall("6",fn,6)
    201 #define device_initcall_sync(fn)        __define_initcall("6s",fn,6s)
    202 #define late_initcall(fn)               __define_initcall("7",fn,7)
    203 #define late_initcall_sync(fn)          __define_initcall("7s",fn,7s)
    204 
    205 #define __initcall(fn) device_initcall(fn)
5-9 5-26 Creation of kernel init thread
    424 static noinline void __init_refok rest_init(void)
    425         __releases(kernel_lock)
    426 {
    427         int pid;
    428 
    429         rcu_scheduler_starting();
    430         kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND);
    431         numa_default_policy();
    432         pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES);
    433         rcu_read_lock();
    434         kthreadd_task = find_task_by_pid_ns(pid, &init_pid_ns);
    435         rcu_read_unlock();
    436         unlock_kernel();
    437 
    438         /*
    439          * The boot idle thread must execute schedule()
    440          * at least once to get things moving:
    441          */
    442         init_idle_bootup_task(current);
    443         preempt_enable_no_resched();
    444         schedule();
    445         preempt_disable();
    446 
    447         /* Call into cpu_idle with preempt disabled */
    448         cpu_idle();
    449 }
5-10 5-27 Initialization via initcalls
    765 extern initcall_t __initcall_start[], __initcall_end[], __early_initcall_end[];
    766 
    767 static void __init do_initcalls(void)
    768 {
    769         initcall_t *fn;
    770 
    771         for (fn = __early_initcall_end; fn < __initcall_end; fn++)
    772                 do_one_initcall(*fn);
    773 
    774         /* Make sure there is no pending stuff from the initcall sequence */
    775         flush_scheduled_work();
    776 }
5-11 5-28 Final Kernel Boot Steps from main.c
    814 static noinline int init_post(void)
    815         __releases(kernel_lock)
    816 {
    817         /* need to finish all async __init code before freeing the memory */
    818         async_synchronize_full();
    819         free_initmem();
    820         unlock_kernel();
    821         mark_rodata_ro();
    822         system_state = SYSTEM_RUNNING;
    823         numa_default_policy();
    824 
    825 
    826         current->signal->flags |= SIGNAL_UNKILLABLE;
    827 
    828         if (ramdisk_execute_command) {
    829                 run_init_process(ramdisk_execute_command);
    830                 printk(KERN_WARNING "Failed to execute %s\n",
    831                                 ramdisk_execute_command);
    832         }
    833 
    834         /*
    835          * We try each of these until one succeeds.
    836          *
    837          * The Bourne shell can be used instead of init if we are
    838          * trying to recover a really broken machine.
    839          */
    840         if (execute_command) {
    841                 run_init_process(execute_command);
    842                 printk(KERN_WARNING "Failed to execute %s.  Attempting "
    843                                         "defaults...\n", execute_command);
    844         }
    845         run_init_process("/sbin/init");
    846         run_init_process("/etc/init");
    847         run_init_process("/bin/init");
    848         run_init_process("/bin/sh");
    849 
    850         panic("No init found.  Try passing init= option to kernel. "
    851               "See Linux Documentation/init.txt for guidance.");
    852 }
6-1 6-7 Final boot steps from main.c
    840         if (execute_command) {
    841                 run_init_process(execute_command);
    842                 printk(KERN_WARNING "Failed to execute %s.  Attempting "
    843                                         "defaults...\n", execute_command);
    844         }
    845         run_init_process("/sbin/init");
    846         run_init_process("/etc/init");
    847         run_init_process("/bin/init");
    848         run_init_process("/bin/sh");
    849 
    850         panic("No init found.  Try passing init= option to kernel. "
    851               "See Linux Documentation/init.txt for guidance.");
6-2 6-10 NFS Restart

6-3 6-12

6-4 6-12 Runlevel Directory Structure
banistpw@ubuntu:~$ ls -d1 /etc/rc*
/etc/rc0.d
/etc/rc1.d
/etc/rc2.d
/etc/rc3.d
/etc/rc4.d
/etc/rc5.d
/etc/rc6.d
/etc/rc.local
/etc/rcS.d
6-5 6-12 Example Runlevel Directory
banistpw@ubuntu:~$ ls -lsa /etc/rc1.d/
total 20
 4 drwxr-xr-x   2 root root  4096 2010-03-08 14:14 .
12 drwxr-xr-x 131 root root 12288 2010-03-26 17:35 ..
 0 lrwxrwxrwx   1 root root    20 2010-03-08 13:39 K15pulseaudio -> ../init.d/pulseaudio
 0 lrwxrwxrwx   1 root root    22 2010-03-08 13:39 K20acpi-support -> ../init.d/acpi-support
 0 lrwxrwxrwx   1 root root    20 2010-03-08 13:39 K20kerneloops -> ../init.d/kerneloops
 0 lrwxrwxrwx   1 root root    15 2010-03-08 13:39 K20rsync -> ../init.d/rsync
 0 lrwxrwxrwx   1 root root    15 2010-03-08 13:39 K20saned -> ../init.d/saned
 0 lrwxrwxrwx   1 root root    27 2010-03-08 13:39 K20speech-dispatcher -> ../init.d/speech-dispatcher
 0 lrwxrwxrwx   1 root root    19 2010-03-08 13:39 K74bluetooth -> ../init.d/bluetooth
 0 lrwxrwxrwx   1 root root    14 2010-03-08 13:39 K80cups -> ../init.d/cups
 0 lrwxrwxrwx   1 root root    21 2010-03-08 13:39 K99laptop-mode -> ../init.d/laptop-mode
 4 -rw-r--r--   1 root root   369 2009-09-07 14:58 README
 0 lrwxrwxrwx   1 root root    19 2010-03-08 13:39 S30killprocs -> ../init.d/killprocs
 0 lrwxrwxrwx   1 root root    19 2010-03-08 13:39 S70dns-clean -> ../init.d/dns-clean
 0 lrwxrwxrwx   1 root root    18 2010-03-08 13:39 S70pppd-dns -> ../init.d/pppd-dns
 0 lrwxrwxrwx   1 root root    16 2010-03-08 13:39 S90single -> ../init.d/single