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New bootrom

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+ Add common area at end of RAM to communicate between main os and bootrom
+ Lower stack end to make room for common area
+ Implement CMD_DEVICE_INFO in both OS and bootrom to give information about the current state and supported features
+ Allow hands-free firmware update: When CMD_START_FLASH is received over USB in OS mode, the device will reset and enter the bootrom
  Pressing the button in hands-free update mode takes precedence: releasing the button will immediately abort firmware update and 
  perform a reset. Do not press the button.
+ Require each flash sequence to be preceded by a CMD_START_FLASH to set up the boundaries for the following flash sequence
  Not compatible with linux flasher before SVN revision 200
  Currently no compatible flasher for Windows. WINDOWS USERS: DO NOT UPDATE YOUR BOOTROM YET
+ Protect bootrom flash area unless magic unlock sequence is given in CMD_START_FLASH
This commit is contained in:
henryk@ploetzli.ch 2009-09-01 14:44:38 +00:00
commit 8fcbf652da
8 changed files with 202 additions and 49 deletions
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4
bootrom/ldscript-flash
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@ -45,4 +45,8 @@ SECTIONS
. = ALIGN( 32 / 8 );
__bss_end__ = .;
.commonarea (NOLOAD) : {
*(.commonarea)
} >commonarea
}