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cortex_a : optimize apb read/write access.

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Rewrite: Adheres more closely to 'fast read/write' examples in TRM.
up to 50x faster

Change-Id: Ieb4da57d8367628f3e7306827a5b1f0ab550e641
Signed-off-by: Evan Hunter <ehunter@broadcom.com>
Reviewed-on: http://openocd.zylin.com/903
Tested-by: jenkins
Reviewed-by: Michel JAOUEN <michel.jaouen@stericsson.com>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
This commit is contained in:
Evan Hunter
2012-10-23 15:48:41 +11:00
committed by Spencer Oliver
parent 700e7605fe
commit 927e53f8d5
6 changed files with 375 additions and 100 deletions
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4
src/target/cortex_m.c
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@@ -1620,7 +1620,7 @@ static int cortex_m3_read_memory(struct target *target, uint32_t address,
if (count && buffer) {
switch (size) {
case 4:
retval = mem_ap_read_buf_u32(swjdp, buffer, 4 * count, address);
retval = mem_ap_read_buf_u32(swjdp, buffer, 4 * count, address, true);
break;
case 2:
retval = mem_ap_read_buf_u16(swjdp, buffer, 2 * count, address);
@@ -1650,7 +1650,7 @@ static int cortex_m3_write_memory(struct target *target, uint32_t address,
if (count && buffer) {
switch (size) {
case 4:
retval = mem_ap_write_buf_u32(swjdp, buffer, 4 * count, address);
retval = mem_ap_write_buf_u32(swjdp, buffer, 4 * count, address, true);
break;
case 2:
retval = mem_ap_write_buf_u16(swjdp, buffer, 2 * count, address);