/*           .          |         main()                  |0x000002c4  FIQ_Routine                        *//*           .          |                                 |0x000002d8  SWI_Routine                        *//*           .          |                                 |0x000002ec  UNDEF_Routine	                  *//*           .          |                                 |0x000002b0  IRQ_routine                        *//*           .          |---------------------------------|0x000001cc  initialize                         *//*           .          |                                 |0x000000D4                                     *//*           .          |         Startup Code            |                                               *//*           .          |         (assembler)             |                                               *//*           .          |                                 |                                               *//*           .          |---------------------------------|0x00000040 Reset_Handler                       *//*           .          |                                 |0x0000003F                                     *//*           .          | Interrupt Vector Table (unused) |                                               *//*           .          |          64 bytes               |                                               *//*           .--------->|---------------------------------|0x00000000 _startup                            */*                                                                                                        *//*                                                                                                        *//*    The easy way to prevent the linker from loading anything into a memory area is to define            *//*    a MEMORY region for it and then avoid assigning any .text, .data or .bss sections into it.          *//*                                                                                                        *//*                                                                                                        *//*             MEMORY                                                                                     *//*             {                                                                                          *//*                ram_isp_low(A)  : ORIGIN = 0x40000120, LENGTH = 223                                     *//*                                                                                                        *//*             }                                                                                          *//*                                                                                                        *//*                                                                                                        *//*  Author:  James P. Lynch                                                                               *//*                                                                                                        *//* ****************************************************************************************************** *//* identify the Entry Point  */ENTRY(_startup)/* specify the LPC2148 memory areas  */MEMORY {	flash     			: ORIGIN = 0,          LENGTH = 512K	/* FLASH ROM                            	*/	//	ram_isp_low(A)		: ORIGIN = 0x40000120, LENGTH = 223		/* variables used by Philips ISP bootloader	*/		 	ram   				: ORIGIN = 0x40000200, LENGTH = 32513   /* free RAM area							*///	ram_isp_high(A)		: ORIGIN = 0x40007FE0, LENGTH = 32		/* variables used by Philips ISP bootloader	*/	ram_usb_dma			: ORIGIN = 0x7FD00000, LENGTH = 8192    /* on-chip USB DMA RAM area (not used)      */}/* define a global symbol _stack_end  */_stack_end = 0x40007EDC;/* now define the output sections  */SECTIONS {	. = 0;								/* set location counter to address zero  */		startup : { *(.startup)} >ram		/* the startup code goes into FLASH */			.text :								/* collect all sections that should go into FLASH after startup  */ 	{		*(.text)						/* all .text sections (code)  */		*(.rodata)						/* all .rodata sections (constants, strings, etc.)  */		*(.rodata*)						/* all .rodata* sections (constants, strings, etc.)  */		*(.glue_7)						/* all .glue_7 sections  (no idea what these are) */		*(.glue_7t)						/* all .glue_7t sections (no idea what these are) */		_etext = .;						/* define a global symbol _etext just after the last code byte */	} >ram								/* put all the above into FLASH */			.data :								/* collect all initialized .data sections that go into RAM  */ 	{		_data = .;						/* create a global symbol marking the start of the .data section  */		*(.data)						/* all .data sections  */		_edata = .;						/* define a global symbol marking the end of the .data section  */	} >ram AT >ram						/* put all the above into RAM (but load the LMA copy into FLASH) */	.bss :								/* collect all uninitialized .bss sections that go into RAM  */	{		_bss_start = .;					/* define a global symbol marking the start of the .bss section */		*(.bss)							/* all .bss sections  */	} >ram								/* put all the above in RAM (it will be cleared in the startup code */	. = ALIGN(4);						/* advance location counter to the next 32-bit boundary */	_bss_end = . ;						/* define a global symbol marking the end of the .bss section */}	_end = .;							/* define a global symbol marking the end of application RAM */