bloader.c

Boot code for ADM5120 with serial console for Edimax router.

/*****************************************************************************
;
;   (C) Unpublished Work of ADMtek Incorporated.  All Rights Reserved.
;
;       THIS WORK IS AN UNPUBLISHED WORK AND CONTAINS CONFIDENTIAL,
;       PROPRIETARY AND TRADESECRET INFORMATION OF ADMTEK INCORPORATED.
;       ACCESS TO THIS WORK IS RESTRICTED TO (I) ADMTEK EMPLOYEES WHO HAVE A
;       NEED TO KNOW TO PERFORM TASKS WITHIN THE SCOPE OF THEIR ASSIGNMENTS
;       AND (II) ENTITIES OTHER THAN ADMTEK WHO HAVE ENTERED INTO APPROPRIATE
;       LICENSE AGREEMENTS.  NO PART OF THIS WORK MAY BE USED, PRACTICED,
;       PERFORMED, COPIED, DISTRIBUTED, REVISED, MODIFIED, TRANSLATED,
;       ABBRIDGED, CONDENSED, EXPANDED, COLLECTED, COMPILED, LINKED, RECAST,
;       TRANSFORMED OR ADAPTED WITHOUT THE PRIOR WRITTEN CONSENT OF ADMTEK.
;       ANY USE OR EXPLOITATION OF THIS WORK WITHOUT AUTHORIZATION COULD
;       SUBJECT THE PERPERTRATOR TO CRIMINAL AND CIVIL LIABILITY.
;
;------------------------------------------------------------------------------
;
;    Project : Common platform
;    Creator :
;    File    : loader.C
;    Abstract: 
;
;Modification History:
; 
;
;*****************************************************************************/
#include <mips4kc.h>
#include <adm5120.h>
#include <hw_profile.h>
#include <ctype.h>
#ifdef	NOR_FLASH
#include <mx29lv160.h>
#include <mx29lv320.h>
#include <flash.h>
#else
#include <nand.h>
#endif
#include <bconfig.h>
#include <uartdrv.h>
#include <if_5120.h>
#include <linuxld.h>
#include <banner.h>
#include <param.h>
#include <bsp_cfg.h>

#define LOADER_BACK_DOOR_TIME   3
#define LOADER_BACK_DOOR_HINT   (' ')
#define LOADER_BACK_DOOR_COUNT  3
#define LOADER_START_HINT       '@'


char hexdigit[] = "0123456789abcdef";
char bt_name[] = "\r\nADM0000 Boot:";

// Already defined in memlib.c (DE)
// void *_heap_h;

extern void _icache_sync_all(void);

/*
 * This routine prints the main menu 
 */
static void print_menu()
{
	buart_print("\n\r"
				"\n\rLoader Menu"
				"\n\r==================================" "\n\r [1] Xmodem Download" "\n\r [2] TFTP Client Download" "\n\r [3] Print Boot Params" "\n\r [4] Set Boot Params" "\n\r [5] Update bootloader" "\n\r [6] Exit\n" "\n\rPlease enter your number:");
}

/*
 * This routine is the C entry pointer of the loader 
 */
void c_entry(void)
{
	int type;
	register int i;
	register int c;
	unsigned long tick1, tick2;
	void (*funcptr) (int);
	int countdown = 3;

	/* initialize uart, timer and flash */
	buart_init();

	//init mem space
	memlib_init();

	//init Timer        
	InitTimer();
#ifdef NOR_FLASH
#if (HWPF_5120_SMEM0_BANK_SIZE == 0x200000)
	mx29lv160_init();
#endif

#if (HWPF_5120_SMEM0_BANK_SIZE == 0x400000)
	mx29lv320_init();
	ADM5120_SW_REG(Mem_control_REG) |= 0x050000;
#endif
	flash_init();
#endif

	//print '@' at the very beginning
	i = ADM5120_SW_REG(CODE_REG) & CODE_ID_MASK;
	bt_name[5] = hexdigit[(i >> 12) & 0xf];
	bt_name[6] = hexdigit[(i >> 8) & 0xf];
	bt_name[7] = hexdigit[(i >> 4) & 0xf];
	bt_name[8] = hexdigit[i & 0xf];
	buart_print(bt_name);
	buart_print("\n\r\n\r");
	buart_print("\n\rCopyright 2002-2004  Infineon-ADMtek, Inc.");
	buart_print("\n\rCPU: ADM");
	buart_print(CPU_NO);
	buart_put('-');
	buart_print(CPU_CLOCK);
	buart_print("\n\rSDRAM: ");
	buart_print(SDRAM_SIZE);
	buart_print("\n\rFlash: ");
	buart_print(FLASH_TYPE);
	buart_put('-');
	buart_print(FLASH_SIZE);
	buart_print("\n\rBoot System: ");
	buart_print(BOOT_SYSTEM);
	buart_print("\n\rLoader Version: ");
	buart_print(LOADER_VERSION);
	buart_print("\n\rCreation Date: ");
	buart_print(CREATE_DATE);
	buart_print("\n\r\n\rPress <space> key tree times to enter boot menu..");
	buart_print("\n\r");

	/* wait 3 second for back door */
	buart_put(countdown + '0');
	tick1 = UpTime();
	for (i = 0; i < 3;) {
		tick2 = UpTime();
		if ((tick2 - tick1) >= 200) {
			countdown--;
			if (countdown < 0)
				break;
			buart_put('\r');
			buart_put(countdown + '0');
			tick1 = UpTime();
		}
		c = buart_get(0);
		switch (c) {
			case -1:
				break;

			case LOADER_BACK_DOOR_HINT:
				if (++i == LOADER_BACK_DOOR_COUNT)
					goto main_menu;
				break;

			default:
				i = 0;
				break;
		}
	}

	/* boot Linux kernel */
	boot_linux();

	/* go back door */
  main_menu:
	// Read the Network configuration data.
	if (boot_param_init() != 0) {
		buart_print("\n\rRead bsp error.");
		panic();
	}
	// Init Switch.
	if (if5120_init() != 0) {
		buart_print("\n\rSwitch init false.");
		panic();
	}
	// Init networks for TFTP.
	tftp_init();

	//Bootloader Function Start.
	while (1) {
		print_menu();

		c = (int) buart_getchar();

		buart_put((char) c);

		switch (c) {
			case '1':
				xmodem_download();
				break;

			case '2':
				tftp_client_menu();
				break;

			case '3':
				PrintBspParam();
				break;

			case '4':
				set_boot_param();
				break;

			case '5':
				update_bootloader();
				break;

			case '6':
				boot_linux();
				break;

			default:
				break;
		}
	}
}