nand.lst

au1200下的boot代码

 751              		.loc 1 177 0
 752 04d0 033C0400 		sra	$7,$4,16
 753              		.loc 1 175 0
 754 04d4 0400C3A4 		sh	$3,4($6)
 755              		.loc 1 176 0
 756 04d8 02004010 		beq	$2,$0,$L69
 757 04dc 00000000 		nop
 758              	
 759              		.loc 1 177 0
 760 04e0 0400C7A4 		sh	$7,4($6)
 761              	$L69:
 762 04e4 0800E003 		j	$31
 763 04e8 00000000 		nop
 764              	
 765              		.set	macro
 766              		.set	reorder
 767              	$LFE10:
 768              		.end	nand_set_page_address
 769              		.align	2
 770              		.globl	nand_check_status
 771              		.ent	nand_check_status
 772              		.type	nand_check_status, @function
 773              	nand_check_status:
 774              	$LFB11:
 178:/mnt/hgfs/boot/booter/source/nand.c **** }
 179:/mnt/hgfs/boot/booter/source/nand.c **** 
 180:/mnt/hgfs/boot/booter/source/nand.c **** // Simple NAND device check for pass/fail for the operation
 181:/mnt/hgfs/boot/booter/source/nand.c **** uint8 nand_check_status()
 182:/mnt/hgfs/boot/booter/source/nand.c **** {
 775              		.loc 1 182 0
 776              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
 777              		.mask	0x00000000,0
 778              		.fmask	0x00000000,0
 779              		.set	noreorder
 780              		.set	nomacro
 781              		
GAS LISTING /tmp/cc4NTrNa.s 			page 18


 183:/mnt/hgfs/boot/booter/source/nand.c ****     uint8 status;
 184:/mnt/hgfs/boot/booter/source/nand.c ****     int i;
 185:/mnt/hgfs/boot/booter/source/nand.c ****     NAND_REG_CMD = NAND_CMD_STATUS_READ1;
 782              		.loc 1 185 0
 783 04ec 0000053C 		lui	$5,%hi(nand_virtual_address)
 784 04f0 0000A28C 		lw	$2,%lo(nand_virtual_address)($5)
 785 04f4 70000324 		li	$3,112
 786 04f8 0100043C 		li	$4,65536			# 0x10000
 787 04fc 000043A4 		sh	$3,0($2)
 788 0500 9F868434 		ori	$4,$4,0x869f
 186:/mnt/hgfs/boot/booter/source/nand.c **** 
 187:/mnt/hgfs/boot/booter/source/nand.c ****     for(i=0;i<100000;i++)
 789              		.loc 1 187 0
 790 0504 21180000 		move	$3,$0
 791 0508 01006324 		addiu	$3,$3,1
 792              	$L77:
 793 050c 2A108300 		slt	$2,$4,$3
 794 0510 FEFF4010 		beq	$2,$0,$L77
 795 0514 01006324 		addiu	$3,$3,1
 796              	
 188:/mnt/hgfs/boot/booter/source/nand.c ****         ;   	// 60ns min before status available
 189:/mnt/hgfs/boot/booter/source/nand.c **** 
 190:/mnt/hgfs/boot/booter/source/nand.c ****     status = NAND_REG_DATA;
 797              		.loc 1 190 0
 798 0518 0000A38C 		lw	$3,%lo(nand_virtual_address)($5)
 799 051c 20006294 		lhu	$2,32($3)
 191:/mnt/hgfs/boot/booter/source/nand.c ****     return status;
 192:/mnt/hgfs/boot/booter/source/nand.c **** }
 800              		.loc 1 192 0
 801 0520 0800E003 		j	$31
 802 0524 FF004230 		andi	$2,$2,0x00ff
 803              	
 804              		.set	macro
 805              		.set	reorder
 806              	$LFE11:
 807              		.end	nand_check_status
 808              		.align	2
 809              		.globl	nand_block_erase
 810              		.ent	nand_block_erase
 811              		.type	nand_block_erase, @function
 812              	nand_block_erase:
 813              	$LFB12:
 193:/mnt/hgfs/boot/booter/source/nand.c **** 
 194:/mnt/hgfs/boot/booter/source/nand.c **** int nand_block_erase(int page)
 195:/mnt/hgfs/boot/booter/source/nand.c **** {
 814              		.loc 1 195 0
 815              		.frame	$sp,32,$31		# vars= 0, regs= 3/0, args= 16, gp= 0
 816              		.mask	0x80030000,-8
 817              		.fmask	0x00000000,0
 818              		.set	noreorder
 819              		.set	nomacro
 820              		
 821 0528 E0FFBD27 		addiu	$sp,$sp,-32
 822              	$LCFI10:
 196:/mnt/hgfs/boot/booter/source/nand.c ****     int status;
 197:/mnt/hgfs/boot/booter/source/nand.c ****     
 198:/mnt/hgfs/boot/booter/source/nand.c ****     gpioWrite(NAND_CE0, 0);
GAS LISTING /tmp/cc4NTrNa.s 			page 19


 823              		.loc 1 198 0
 824 052c 21280000 		move	$5,$0
 825              		.loc 1 195 0
 826 0530 1400B1AF 		sw	$17,20($sp)
 827              	$LCFI11:
 828 0534 1000B0AF 		sw	$16,16($sp)
 829              	$LCFI12:
 830 0538 21888000 		move	$17,$4
 199:/mnt/hgfs/boot/booter/source/nand.c ****     NAND_REG_CMD = NAND_CMD_AUTO_ERASE_SETUP;
 831              		.loc 1 199 0
 832 053c 0000103C 		lui	$16,%hi(nand_virtual_address)
 833              		.loc 1 195 0
 834 0540 1800BFAF 		sw	$31,24($sp)
 835              	$LCFI13:
 836              		.loc 1 198 0
 837 0544 0000000C 		jal	gpioWrite
 838 0548 15000424 		li	$4,21			# 0x15
 839              	
 840              		.loc 1 199 0
 841 054c 0000038E 		lw	$3,%lo(nand_virtual_address)($16)
 842 0550 60000224 		li	$2,96
 200:/mnt/hgfs/boot/booter/source/nand.c ****     nand_set_page_address(page);
 843              		.loc 1 200 0
 844 0554 21202002 		move	$4,$17
 845              		.loc 1 199 0
 846 0558 000062A4 		sh	$2,0($3)
 847              		.loc 1 200 0
 848 055c 0000000C 		jal	nand_set_page_address
 849 0560 00000000 		nop
 850              	
 201:/mnt/hgfs/boot/booter/source/nand.c ****     NAND_REG_CMD = NAND_CMD_ERASE;
 851              		.loc 1 201 0
 852 0564 0000038E 		lw	$3,%lo(nand_virtual_address)($16)
 853 0568 D0000224 		li	$2,208
 854 056c 000062A4 		sh	$2,0($3)
 202:/mnt/hgfs/boot/booter/source/nand.c ****     nand_wait_busy();
 855              		.loc 1 202 0
 856 0570 0000000C 		jal	nand_wait_busy
 857 0574 00000000 		nop
 858              	
 203:/mnt/hgfs/boot/booter/source/nand.c ****     status = !(nand_check_status() & NAND_STATUS_ERASE_ERROR);
 859              		.loc 1 203 0
 860 0578 0000000C 		jal	nand_check_status
 861 057c 00000000 		nop
 862              	
 863 0580 01005038 		xori	$16,$2,0x1
 864 0584 01001032 		andi	$16,$16,0x1
 204:/mnt/hgfs/boot/booter/source/nand.c ****     gpioWrite(NAND_CE0, 1);
 865              		.loc 1 204 0
 866 0588 15000424 		li	$4,21			# 0x15
 867 058c 0000000C 		jal	gpioWrite
 868 0590 01000524 		li	$5,1			# 0x1
 869              	
 205:/mnt/hgfs/boot/booter/source/nand.c ****     return status;
 206:/mnt/hgfs/boot/booter/source/nand.c **** }
 870              		.loc 1 206 0
 871 0594 21100002 		move	$2,$16
GAS LISTING /tmp/cc4NTrNa.s 			page 20


 872 0598 1800BF8F 		lw	$31,24($sp)
 873 059c 1400B18F 		lw	$17,20($sp)
 874 05a0 1000B08F 		lw	$16,16($sp)
 875 05a4 0800E003 		j	$31
 876 05a8 2000BD27 		addiu	$sp,$sp,32
 877              	
 878              		.set	macro
 879              		.set	reorder
 880              	$LFE12:
 881              		.end	nand_block_erase
 882              		.align	2
 883              		.globl	nand_program
 884              		.ent	nand_program
 885              		.type	nand_program, @function
 886              	nand_program:
 887              	$LFB13:
 207:/mnt/hgfs/boot/booter/source/nand.c **** 
 208:/mnt/hgfs/boot/booter/source/nand.c **** int nand_program(char* source, int size, int page, int offset)
 209:/mnt/hgfs/boot/booter/source/nand.c **** {
 888              		.loc 1 209 0
 889              		.frame	$sp,40,$31		# vars= 0, regs= 6/0, args= 16, gp= 0
 890              		.mask	0x801f0000,-4
 891              		.fmask	0x00000000,0
 892              		.set	noreorder
 893              		.set	nomacro
 894              		
 895 05ac D8FFBD27 		addiu	$sp,$sp,-40
 896              	$LCFI14:
 897 05b0 2000B4AF 		sw	$20,32($sp)
 898              	$LCFI15:
 899 05b4 1C00B3AF 		sw	$19,28($sp)
 900              	$LCFI16:
 901 05b8 1800B2AF 		sw	$18,24($sp)
 902              	$LCFI17:
 903 05bc 2198A000 		move	$19,$5
 904 05c0 21908000 		move	$18,$4
 210:/mnt/hgfs/boot/booter/source/nand.c ****     int bytes;
 211:/mnt/hgfs/boot/booter/source/nand.c **** 
 212:/mnt/hgfs/boot/booter/source/nand.c ****     gpioWrite(NAND_CE0, 0);
 905              		.loc 1 212 0
 906 05c4 21280000 		move	$5,$0
 907 05c8 15000424 		li	$4,21			# 0x15
 213:/mnt/hgfs/boot/booter/source/nand.c **** 
 214:/mnt/hgfs/boot/booter/source/nand.c ****     NAND_REG_CMD = NAND_CMD_SEQ_DATA_INPUT;
 908              		.loc 1 214 0
 909 05cc 0000143C 		lui	$20,%hi(nand_virtual_address)
 910              		.loc 1 209 0
 911 05d0 2400BFAF 		sw	$31,36($sp)
 912              	$LCFI18:
 913 05d4 1400B1AF 		sw	$17,20($sp)
 914              	$LCFI19:
 915 05d8 1000B0AF 		sw	$16,16($sp)
 916              	$LCFI20:
 917              		.loc 1 209 0
 918 05dc 2188C000 		move	$17,$6
 919              		.loc 1 212 0
 920 05e0 0000000C 		jal	gpioWrite
GAS LISTING /tmp/cc4NTrNa.s 			page 21


 921 05e4 2180E000 		move	$16,$7
 922              	
 923              		.loc 1 214 0
 924 05e8 0000838E 		lw	$3,%lo(nand_virtual_address)($20)
 925 05ec 80000224 		li	$2,128
 215:/mnt/hgfs/boot/booter/source/nand.c ****     nand_set_column_address(offset);
 926              		.loc 1 215 0
 927 05f0 21200002 		move	$4,$16
 928              		.loc 1 214 0
 929 05f4 000062A4 		sh	$2,0($3)
 216:/mnt/hgfs/boot/booter/source/nand.c ****     nand_set_page_address(page);
 217:/mnt/hgfs/boot/booter/source/nand.c **** 
 218:/mnt/hgfs/boot/booter/source/nand.c ****     for(bytes = 0; bytes < size; )
 930              		.loc 1 218 0
 931              		.loc 1 215 0
 932 05f8 0000000C 		jal	nand_set_column_address
 933 05fc 21800000 		move	$16,$0
 934              	
 935              		.loc 1 216 0
 936 0600 0000000C 		jal	nand_set_page_address
 937 0604 21202002 		move	$4,$17
 938              	
 939              		.loc 1 218 0
 940 0608 1400601A 		blez	$19,$L88
 941 060c 0000023C 		lui	$2,%hi(nand_device)
 942              	
 943 0610 0400438C 		lw	$3,%lo(nand_device)($2)
 944 0614 0000848E 		lw	$4,%lo(nand_virtual_address)($20)
 945 0618 08000524 		li	$5,8			# 0x8
 946 061c 8E010008 		j	$L85
 947 0620 10000624 		li	$6,16			# 0x10
 948              	
 949              	$L90:
 219:/mnt/hgfs/boot/booter/source/nand.c ****     {
 220:/mnt/hgfs/boot/booter/source/nand.c ****         switch(nand_device.data_width)
 950              		.loc 1 220 0
 951 0624 22006610 		beq	$3,$6,$L84
 952 0628 00000000 		nop
 953              	
 954              		.loc 1 218 0
 955 062c 2A101302 		slt	$2,$16,$19
 221:/mnt/hgfs/boot/booter/source/nand.c ****         {
 222:/mnt/hgfs/boot/booter/source/nand.c ****         case  8:
 223:/mnt/hgfs/boot/booter/source/nand.c ****             NAND_REG_DATA = *((char*)source);
 224:/mnt/hgfs/boot/booter/source/nand.c ****             source += 1;
 225:/mnt/hgfs/boot/booter/source/nand.c ****             bytes += 1;
 226:/mnt/hgfs/boot/booter/source/nand.c ****             break;
 227:/mnt/hgfs/boot/booter/source/nand.c ****         case 16:
 228:/mnt/hgfs/boot/booter/source/nand.c ****             NAND_REG_DATA = *((short*)source);
 229:/mnt/hgfs/boot/booter/source/nand.c ****             source += 2;
 230:/mnt/hgfs/boot/booter/source/nand.c ****             bytes += 2;
 231:/mnt/hgfs/boot/booter/source/nand.c ****             break;
 232:/mnt/hgfs/boot/booter/source/nand.c ****         }
 233:/mnt/hgfs/boot/booter/source/nand.c ****     }
 234:/mnt/hgfs/boot/booter/source/nand.c **** 
 235:/mnt/hgfs/boot/booter/source/nand.c ****     NAND_REG_CMD = NAND_CMD_PROGRAM;
 956              		.loc 1 235 0
GAS LISTING /tmp/cc4NTrNa.s 			page 22


 957              		.loc 1 218 0
 958 0630 0B004010 		beq	$2,$0,$L93
 959 0634 0000828E 		lw	$2,%lo(nand_virtual_address)($20)
 960              	
 961              	$L85:
 962              		.loc 1 220 0
 963 0638 FAFF6514 		bne	$3,$5,$L90
 964 063c 00000000 		nop
 965              	
 966              		.loc 1 223 0
 967 0640 00004282 		lb	$2,0($18)
 968              		.loc 1 225 0
 969 0644 01001026 		addiu	$16,$16,1
 970              		.loc 1 224 0
 971 0648 01005226 		addiu	$18,$18,1
 972              		.loc 1 228 0
 973 064c 200082A4 		sh	$2,32($4)
 974              		.loc 1 218 0
 975 0650 2A101302 		slt	$2,$16,$19
 976              	$L92:
 977 0654 F8FF4014 		bne	$2,$0,$L85
 978 0658 00000000 		nop
 979              	
 980              	$L88:
 981              		.loc 1 235 0
 982 065c 0000828E 		lw	$2,%lo(nand_virtual_address)($20)
 983              	$L93:
 984 0660 10000324 		li	$3,16
 985 0664 000043A4 		sh	$3,0($2)
 236:/mnt/hgfs/boot/booter/source/nand.c **** 
 237:/mnt/hgfs/boot/booter/source/nand.c ****     nand_wait_busy();
 986              		.loc 1 237 0
 987 0668 0000000C 		jal	nand_wait_busy
 988 066c 00000000 		nop
 989              	
 238:/mnt/hgfs/boot/booter/source/nand.c **** 
 239:/mnt/hgfs/boot/booter/source/nand.c ****     if(nand_check_status() & NAND_STATUS_PROGRAM_ERROR)
 990              		.loc 1 239 0
 991 0670 0000000C 		jal	nand_check_status
 992 0674 00000000 		nop
 993              	
 994 0678 01004230 		andi	$2,$2,0x1
 240:/mnt/hgfs/boot/booter/source/nand.c ****         bytes = 0;
 995              		.loc 1 240 0
 996 067c 0B800200 		movn	$16,$0,$2
 241:/mnt/hgfs/boot/booter/source/nand.c **** 
 242:/mnt/hgfs/boot/booter/source/nand.c ****     gpioWrite(NAND_CE0, 1);
 997              		.loc 1 242 0
 998 0680 15000424 		li	$4,21			# 0x15