URL https://opencores.org/ocsvn/s6soc/s6soc/trunk

Subversion Repositories s6soc

[/] [s6soc/] [trunk/] [sw/] [zipos/] [bootloader.c] - Diff between revs 27 and 45

Rev 27	Rev 45
Line 36...	Line 36...
`//`	`//`
`////////////////////////////////////////////////////////////////////////////////`	`////////////////////////////////////////////////////////////////////////////////`
`//`	`//`
`//`	`//`
`#include "board.h"`	`#include "board.h"`
	`#include "bootloader.h"`

`// These values will be filled in by the linker. They are unknown at compile`	`// These values will be filled in by the linker. They are unknown at compile`
`// time.`	`// time.`
`extern int load_image_start, load_image_end, bss_image_end;`

`void bootloader(void) {`	`void _bootloader(void) __attribute__ ((section(".boot")));`
`int len = ((int)&load_image_end) - RAMADDR;`
`int *flash = &load_image_start;`	`void _bootloader(void) {`
`int mem = (int )RAMADDR;`	`int *flash = _kernel_image_start;`
	`int *mem = _blkram;`

	`while(mem < _kernel_image_end)`
	`mem++ = flash++;`

`for(int i=0; i<len; i++)`
`mem[i] = flash[i];`
`// While I'd love to continue and clear to the end of memory, doing`	`// While I'd love to continue and clear to the end of memory, doing`
`// so will corrupt my stack and perhaps even my return address. Hence`	`// so will corrupt my stack and perhaps even my return address. Hence`
`// we only do this much.`	`// we only do this much.`
`for(int i=len; i< ((int)&bss_image_end)-RAMADDR; i++)`	`while(mem < _bss_image_end)`
`mem[i] = 0;`	`*mem++ = 0;`
`}`	`}`


`No newline at end of file`	`No newline at end of file`