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Change bootloader makefiles to automatically compute the bootloader starting address from a flash size and bootloader section size, expressed in KB.

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This commit is contained in:
Dean Camera 2011-02-09 17:58:21 +00:00
parent 5995c3f880
commit 088bfb10b2
5 changed files with 12 additions and 7 deletions
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4
Bootloaders/DFU/BootloaderDFU.c
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@ -38,9 +38,9 @@
/** Flag to indicate if the bootloader is currently running in secure mode, disallowing memory operations
* other than erase. This is initially set to the value set by SECURE_MODE, and cleared by the bootloader
* once a memory erase has completed.
* once a memory erase has completed in a bootloader session.
*/
bool IsSecure = SECURE_MODE;
bool IsSecure = SECURE_MODE;
/** Flag to indicate if the bootloader should be running, or should exit and allow the application code to run
* via a soft reset. When cleared, the bootloader will abort, the USB interface will shut down and the application

6
Bootloaders/DFU/makefile
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@ -86,11 +86,13 @@ F_CLOCK = $(F_CPU)
# Starting byte address of the bootloader, as a byte address - computed via the formula
# BOOT_START = ((TOTAL_FLASH_BYTES - BOOTLOADER_SECTION_SIZE_BYTES) * 1024)
# BOOT_START = ((FLASH_SIZE_KB - BOOT_SECTION_SIZE_KB) * 1024)
#
# Note that the bootloader size and start address given in AVRStudio is in words and not
# bytes, and so will need to be doubled to obtain the byte address needed by AVR-GCC.
BOOT_START = 0x1E000
FLASH_SIZE_KB = 128
BOOT_SECTION_SIZE_KB = 4
BOOT_START = 0x$(shell echo "obase=16; ($(FLASH_SIZE_KB) - $(BOOT_SECTION_SIZE_KB)) * 1024" | bc)
# Output format. (can be srec, ihex, binary)