55 lines
3.1 KiB
Plaintext
55 lines
3.1 KiB
Plaintext
/* identify the Entry Point */
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ENTRY(_startup)
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/* specify the LPC2xxx memory areas. note that the RAM is configured to be only 8kb. this is
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* the smallest in the LPC2xxx series, making this memory layout compatible with all devices
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* in this serie of microcontrollers.
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*/
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MEMORY
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{
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flash : ORIGIN = 0x00000000, LENGTH = 16K /* FLASH ROM reserved for the bootloader */
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ram_vectors(A) : ORIGIN = 0x40000000, LENGTH = 64 /* RAM vectors of the user program */
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ram_monitor(A) : ORIGIN = 0x40000040, LENGTH = 224 /* variables used by Philips RealMonitor */
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ram_isp_low(A) : ORIGIN = 0x40000120, LENGTH = 224 /* variables used by Philips ISP bootloader */
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ram : ORIGIN = 0x40000200, LENGTH = 7392 /* free RAM area */
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ram_isp_high(A) : ORIGIN = 0x40001EE0, LENGTH = 288 /* variables used by Philips ISP bootloader */
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}
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/* define a global symbol _stack_end, placed at the very end of unused RAM */
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_stack_end = 0x40001EE0 - 4;
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/* now define the output sections */
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SECTIONS
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{
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. = 0; /* set location counter to address zero */
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startup : { *(.startup)} >flash /* the startup code goes into FLASH */
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.text : /* collect all sections that should go into FLASH after startup */
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{
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*(.text) /* all .text sections (code) */
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*(.rodata) /* all .rodata sections (constants, strings, etc.) */
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*(.rodata*) /* all .rodata* sections (constants, strings, etc.) */
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*(.glue_7) /* all .glue_7 sections (no idea what these are) */
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*(.glue_7t) /* all .glue_7t sections (no idea what these are) */
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_etext = .; /* define a global symbol _etext just after the last code byte */
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} >flash /* put all the above into FLASH */
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.data : /* collect all initialized .data sections that go into RAM */
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{
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_data = .; /* create a global symbol marking the start of the .data section */
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*(.data) /* all .data sections */
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_edata = .; /* define a global symbol marking the end of the .data section */
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} >ram AT >flash /* put all the above into RAM (but load the LMA copy into FLASH) */
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.bss : /* collect all uninitialized .bss sections that go into RAM */
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{
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_bss_start = .; /* define a global symbol marking the start of the .bss section */
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*(.bss) /* all .bss sections */
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} >ram /* put all the above in RAM (it will be cleared in the startup code */
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. = ALIGN(4); /* advance location counter to the next 32-bit boundary */
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_bss_end = . ; /* define a global symbol marking the end of the .bss section */
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}
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_end = .; /* define a global symbol marking the end of application RAM */
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