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dsp5680xx - fix - flashing algorithm check 

now the flash algorithm running on the 568013 checks the buffer_empty bit (instead of the command_finished bit) before trying to write a new word to the flash mem.
this should speed up the flashing procedure. since it is open loop, this change may reduce the risk of failure. flashing will fail if JTAG speed is such that the flash module cannot keep up.

also, the USTAT register is only read once, as suggested in the flow chart provided by freescale (per. ref. manual @ 6-11)

the last step of the flow chart, exiting after commands are complete, is not implemented.
the algorithm will stay waiting for more data. it is up to the PC side to *not* send more data.

Change-Id: I47fe4b50de7da85f80868f5986a89a7e2152616c
Signed-off-by: Rodrigo L. Rosa <rodrigorosa.lg@gmail.com>
Reviewed-on: http://openocd.zylin.com/219
Tested-by: jenkins
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>
__archive__
rodrigo_l_rosa 2011-11-15 08:14:32 -08:00 committed by Øyvind Harboe
parent c460697b62
commit 6461f7669a
1 changed files with 32 additions and 22 deletions
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54
src/target/dsp5680xx.c
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@ -1491,38 +1491,48 @@ int dsp5680xx_f_erase(struct target * target, int first, int last){
* r2: FM module base address.
* r3: Destination address in flash.
*
* hfm_wait: // wait for command to finish
* brclr #0x40,x:(r2+0x13),hfm_wait
* hfm_wait: // wait for buffer empty
* brclr #0x80,x:(r2+0x13),hfm_wait
* rx_check: // wait for input buffer full
* brclr #0x01,x:(r0-2),rx_check
* move.w x:(r0),y0 // read from Rx buffer
* move.w y0,p:(r3)+
* move.w #0x20,x:(r2+0x14) // write PGM command
* move.w #0x80,x:(r2+0x13) // start the command
* brclr #0x20,X:(R2+0x13),accerr_check // protection violation check
* bfset #0x20,X:(R2+0x13) // clear pviol
* move.w X:(R2+0x13),A // Read USTAT register
* brclr #0x20,A,accerr_check // protection violation check
* bfset #0x20,X:(R2+0x13) // clear pviol
* bra hfm_wait
* accerr_check:
* brclr #0x10,X:(R2+0x13),hfm_wait // access error check
* bfset #0x10,X:(R2+0x13) // clear accerr
* brclr #0x10,A,hfm_wait // access error check
* bfset #0x10,X:(R2+0x13) // clear accerr
* bra hfm_wait // loop
*0x00000073 0x8A460013407D brclr #0x40,X:(R2+0x13),*+0
*0x00000076 0xE700 nop
*0x00000077 0xE700 nop
*0x00000078 0x8A44FFFE017B brclr #1,X:(R0-2),*-2
*0x0000007B 0xE700 nop
*0x0000007C 0xF514 move.w X:(R0),Y0
*0x0000007D 0x8563 move.w Y0,P:(R3)+
*0x0000007E 0x864600200014 move.w #0x20,X:(R2+0x14)
*0x00000081 0x864600800013 move.w #0x80,X:(R2+0x13)
*0x00000084 0x8A4600132004 brclr #0x20,X:(R2+0x13),*+7
*0x00000087 0x824600130020 bfset #0x20,X:(R2+0x13)
*0x0000008A 0xA968 bra *-23
*0x0000008B 0x8A4600131065 brclr #0x10,X:(R2+0x13),*-24
*0x0000008E 0x824600130010 bfset #0x10,X:(R2+0x13)
*0x00000091 0xA961 bra *-30
*0x00000000 0x8A460013807D brclr #0x80,X:(R2+0x13),*+0
*0x00000003 0xE700 nop
*0x00000004 0xE700 nop
*0x00000005 0x8A44FFFE017B brclr #1,X:(R0-2),*-2
*0x00000008 0xE700 nop
*0x00000009 0xF514 move.w X:(R0),Y0
*0x0000000A 0x8563 move.w Y0,P:(R3)+
*0x0000000B 0x864600200014 move.w #32,X:(R2+0x14)
*0x0000000E 0x864600800013 move.w #128,X:(R2+0x13)
*0x00000011 0xF0420013 move.w X:(R2+0x13),A
*0x00000013 0x8B402004 brclr #0x20,A,*+6
*0x00000015 0x824600130020 bfset #0x20,X:(R2+0x13)
*0x00000018 0xA967 bra *-24
*0x00000019 0x8B401065 brclr #0x10,A,*-25
*0x0000001B 0x824600130010 bfset #0x10,X:(R2+0x13)
*0x0000001E 0xA961 bra *-30
*/
const uint16_t pgm_write_pflash[] = {0x8A46,0x0013,0x407D,0xE700,0xE700,0x8A44,0xFFFE,0x017B,0xE700,0xF514,0x8563,0x8646,0x0020,0x0014,0x8646,0x0080,0x0013,0x8A46,0x0013,0x2004,0x8246,0x0013,0x0020,0xA968,0x8A46,0x0013,0x1065,0x8246,0x0013,0x0010,0xA961};
const uint16_t pgm_write_pflash[] = {0x8A46, 0x0013, 0x807D, 0xE700,\
0xE700, 0x8A44, 0xFFFE, 0x017B,\
0xE700, 0xF514, 0x8563, 0x8646,\
0x0020, 0x0014, 0x8646, 0x0080,\
0x0013, 0xF042, 0x0013, 0x8B40,\
0x2004, 0x8246, 0x0013, 0x0020,\
0xA967, 0x8B40, 0x1065, 0x8246,\
0x0013, 0x0010, 0xA961};
const uint32_t pgm_write_pflash_length = 31;
int dsp5680xx_f_wr(struct target * target, uint8_t *buffer, uint32_t address, uint32_t count, int is_flash_lock){