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- add support for different TAR autotincrement sizes as per ARM ADI spec.

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- set TAR size to 12 bits for Cortex-M3.
- Original patch submitted by Magnus Lundin [lundin@mlu.mine.nu].


git-svn-id: svn://svn.berlios.de/openocd/trunk@2051 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
ntfreak
2009-06-04 13:45:50 +00:00
parent d861002612
commit f7d3fdb195
3 changed files with 34 additions and 12 deletions
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36
src/target/arm_adi_v5.c
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@@ -52,6 +52,18 @@
* are immediatley available.
*/
/* ARM ADI Specification requires at least 10 bits used for TAR autoincrement */
/*
u32 tar_block_size(u32 address)
Return the largest block starting at address that does not cross a tar block size alignment boundary
*/
static u32 max_tar_block_size(u32 tar_autoincr_block, u32 address)
{
return (tar_autoincr_block - ((tar_autoincr_block - 1) & address)) >> 2;
}
/***************************************************************************
* *
* DPACC and APACC scanchain access through JTAG-DP *
@@ -467,8 +479,8 @@ int mem_ap_write_buf_u32(swjdp_common_t *swjdp, u8 *buffer, int count, u32 addre
while (wcount > 0)
{
/* Adjust to write blocks within 4K aligned boundaries */
blocksize = (0x1000 - (0xFFF & address)) >> 2;
/* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/
blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address);
if (wcount < blocksize)
blocksize = wcount;
@@ -517,8 +529,8 @@ int mem_ap_write_buf_packed_u16(swjdp_common_t *swjdp, u8 *buffer, int count, u3
{
int nbytes;
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address)) >> 1;
/* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/
blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address);
if (wcount < blocksize)
blocksize = wcount;
@@ -613,8 +625,8 @@ int mem_ap_write_buf_packed_u8(swjdp_common_t *swjdp, u8 *buffer, int count, u32
{
int nbytes;
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address));
/* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/
blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address);
if (wcount < blocksize)
blocksize = wcount;
@@ -710,8 +722,8 @@ int mem_ap_read_buf_u32(swjdp_common_t *swjdp, u8 *buffer, int count, u32 addres
while (wcount > 0)
{
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address)) >> 2;
/* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/
blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address);
if (wcount < blocksize)
blocksize = wcount;
@@ -784,8 +796,8 @@ int mem_ap_read_buf_packed_u16(swjdp_common_t *swjdp, u8 *buffer, int count, u32
{
int nbytes;
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address)) >> 1;
/* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/
blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address);
if (wcount < blocksize)
blocksize = wcount;
@@ -879,8 +891,8 @@ int mem_ap_read_buf_packed_u8(swjdp_common_t *swjdp, u8 *buffer, int count, u32
{
int nbytes;
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address));
/* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/
blocksize = max_tar_block_size(swjdp->tar_autoincr_block, address);
if (wcount < blocksize)
blocksize = wcount;