EBC Listings for Embedded Linux Primer

From eLinux.org
Revision as of 18:17, 19 March 2010 by Yoder (Talk | contribs) (Chapter 4: Added Listing 4-1)

Jump to: navigation, search


Here are the listing from the Embedded Linux Primer as done on the Beagle.

Chapter 2

Number Page Caption Listing
2-1 2-6 Initial Bootloader Serial Output
Texas Instruments X-Loader 1.4.2 (Feb 19 2009 - 12:01:24)
Reading boot sector
Loading u-boot.bin from mmc


U-Boot 2009.11-rc1 (Jan 08 2010 - 21:19:52)

OMAP3530-GP ES3.1, CPU-OPP2 L3-165MHz
OMAP3 Beagle board + LPDDR/NAND
I2C:   ready
DRAM:  256 MB
NAND:  256 MiB
In:    serial
Out:   serial
Err:   serial
Board revision C4
Die ID #5444000400000000040365fa1400e007
Hit any key to stop autoboot:  0
OMAP3 beagleboard.org # 
2-2 2-7 Loading the Linux Kernel
2-3 2-9 Linux Final Boot Messages

2-4 2-21 Hello World, Embedded 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;
}
2-5 2-22 Hello Output for Host Computer

2-5 2-22 Hello Output for Beagle

Chapter 4

Number Page Caption Listing
4-1 4-7 Kernel Build Output
$ export OETREE="${HOME}/oe"
$ PATH=${OETREE}/angstrom-dev/staging/i686-linux/usr/bin/:${PATH}
$ PATH=${OETREE}/angstrom-dev/cross/armv7a/bin/:${PATH}
$ make CROSS_COMPILE=arm-angstrom-linux-gnueabi- uImage
  CHK     include/linux/version.h
make[1]: `include/asm-arm/mach-types.h' is up to date.
  CHK     include/linux/utsrelease.h
  SYMLINK include/asm -> include/asm-arm
  CALL    scripts/checksyscalls.sh
  CHK     include/linux/compile.h
  CC      arch/arm/mach-omap2/io.o
  CC      arch/arm/mach-omap2/devices.o
      .
      .  <lines of output omitted here>
      .
  LD      vmlinux
  SYSMAP  System.map
  SYSMAP  .tmp_System.map
  OBJCOPY arch/arm/boot/Image
  Kernel: arch/arm/boot/Image is ready
  GZIP    arch/arm/boot/compressed/piggy.gz
  AS      arch/arm/boot/compressed/piggy.o
  LD      arch/arm/boot/compressed/vmlinux
  OBJCOPY arch/arm/boot/zImage
  Kernel: arch/arm/boot/zImage is ready
  UIMAGE  arch/arm/boot/uImage
Image Name:   Linux-2.6.29-omap1
Created:      Tue Mar  9 12:58:27 2010
Image Type:   ARM Linux Kernel Image (uncompressed)
Data Size:    2991236 Bytes = 2921.13 kB = 2.85 MB
Load Address: 0x80008000
Entry Point:  0x80008000
  Image arch/arm/boot/uImage is ready
4-2 4-9 Link Stage: vmlinux

4-3 4-14 Kernel Subdirectory