sam4s flash: remove unused bootstrap routine 41/1641/2
authorAndrey Yurovsky <yurovsky@gmail.com>
Sat, 21 Sep 2013 05:21:10 +0000 (22:21 -0700)
committerSpencer Oliver <spen@spen-soft.co.uk>
Tue, 15 Oct 2013 20:39:07 +0000 (20:39 +0000)
Remove the static const array containing ARM instructions for a
bootstrap program.  Despite what the comment says, the DAP can write to
the Flash and in fact this program is not referenced anywhere in openocd
so it's a bit confusing having it in there.  There should be no
functionality change from this.

Change-Id: I4ca4206f090a896628ee9b675d1f04450ada1563
Signed-off-by: Andrey Yurovsky <yurovsky@gmail.com>
Reviewed-on: http://openocd.zylin.com/1641
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
src/flash/nor/at91sam4.c

index c7385c4..2615c3d 100644 (file)
@@ -1838,93 +1838,6 @@ static int sam4_page_read(struct sam4_bank_private *pPrivate, unsigned pagenum,
        return r;
 }
 
-/* The code below is basically this: */
-/* compiled with */
-/* arm-none-eabi-gcc -mthumb -mcpu = cortex-m3 -O9 -S ./foobar.c -o foobar.s */
-/*  */
-/* Only the *CPU* can write to the flash buffer. */
-/* the DAP cannot... so - we download this 28byte thing */
-/* Run the algorithm - (below) */
-/* to program the device */
-/*  */
-/* ======================================== */
-/* #include <stdint.h> */
-/*  */
-/* struct foo { */
-/*   uint32_t *dst; */
-/*   const uint32_t *src; */
-/*   int   n; */
-/*   volatile uint32_t *base; */
-/*   uint32_t   cmd; */
-/* }; */
-/*  */
-/*  */
-/* uint32_t sam4_function(struct foo *p) */
-/* { */
-/*   volatile uint32_t *v; */
-/*   uint32_t *d; */
-/*   const uint32_t *s; */
-/*   int   n; */
-/*   uint32_t r; */
-/*  */
-/*   d = p->dst; */
-/*   s = p->src; */
-/*   n = p->n; */
-/*  */
-/*   do { */
-/*     *d++ = *s++; */
-/*   } while (--n) */
-/*     ; */
-/*  */
-/*   v = p->base; */
-/*  */
-/*   v[ 1 ] = p->cmd; */
-/*   do { */
-/*     r = v[8/4]; */
-/*   } while (!(r&1)) */
-/*     ; */
-/*   return r; */
-/* } */
-/* ======================================== */
-
-static const uint8_t
-       sam4_page_write_opcodes[] = {
-       /*  24 0000 0446                mov     r4, r0 */
-       0x04, 0x46,
-       /*  25 0002 6168                ldr     r1, [r4, #4] */
-       0x61, 0x68,
-       /*  26 0004 0068                ldr     r0, [r0, #0] */
-       0x00, 0x68,
-       /*  27 0006 A268                ldr     r2, [r4, #8] */
-       0xa2, 0x68,
-       /*  28                          @ lr needed for prologue */
-       /*  29                  .L2: */
-       /*  30 0008 51F8043B            ldr     r3, [r1], #4 */
-       0x51, 0xf8, 0x04, 0x3b,
-       /*  31 000c 12F1FF32            adds    r2, r2, #-1 */
-       0x12, 0xf1, 0xff, 0x32,
-       /*  32 0010 40F8043B            str     r3, [r0], #4 */
-       0x40, 0xf8, 0x04, 0x3b,
-       /*  33 0014 F8D1                bne     .L2 */
-       0xf8, 0xd1,
-       /*  34 0016 E268                ldr     r2, [r4, #12] */
-       0xe2, 0x68,
-       /*  35 0018 2369                ldr     r3, [r4, #16] */
-       0x23, 0x69,
-       /*  36 001a 5360                str     r3, [r2, #4] */
-       0x53, 0x60,
-       /*  37 001c 0832                adds    r2, r2, #8 */
-       0x08, 0x32,
-       /*  38                  .L4: */
-       /*  39 001e 1068                ldr     r0, [r2, #0] */
-       0x10, 0x68,
-       /*  40 0020 10F0010F            tst     r0, #1 */
-       0x10, 0xf0, 0x01, 0x0f,
-       /*  41 0024 FBD0                beq     .L4 */
-       0xfb, 0xd0,
-       0x00, 0xBE                              /* bkpt #0 */
-};
-
 static int sam4_page_write(struct sam4_bank_private *pPrivate, unsigned pagenum, uint8_t *buf)
 {
        uint32_t adr;