arch.h.svn-base

RT-Thread是发展中的下一代微内核嵌入式实时操作系统

#ifndef __ARCH_H__
#define __ARCH_H__

/*
lumit4510 memory layout
16M SDRAM
0x0 -- 0x1000000

+------+ 0x1000000
|      | service entry description
+------+ 0x0fffc00
|      |
|      |
|      |
|      |
|      |
|      |
|      |
|      |
|      |
+------+ 0xa000  <-- kernel and service
|      |
+------+ 0x8000 <-- bootloader
|      |
|      |
|      |
+------+ 0x0000
*/

/* Macro to adjust alignment */
#define PAGE_SIZE	4096

/* Page mapping */
#define phys_to_virt(p_addr)	p_addr
#define virt_to_phys(v_addr)	v_addr

/** the start address of service description page */
#define SERVICE_START		0x0fffc00
#define SERVICE_SIZE		0x400

/** the start address of service entry */
#define ENTRY_START			0xa000

struct mk_service;
/** set arch memory information */
void service_memory_init(struct mk_service* service);

void rt_arch_init();
char rt_getc();
void rt_putc(const char c);
void rt_puts(const char* str);

#endif