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samd: Remove low level ADIv5 calls an favour of target_mem_write.

This commit is contained in:
Gareth McMullin 2015-03-17 10:31:48 -07:00
parent 018d9cce80
commit 0bf7778759
1 changed files with 7 additions and 24 deletions
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31
src/samd.c
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@ -508,7 +508,6 @@ static int samd_flash_erase(struct target_s *target, uint32_t addr, size_t len)
static int samd_flash_write(struct target_s *target, uint32_t dest, static int samd_flash_write(struct target_s *target, uint32_t dest,
const uint8_t *src, size_t len) const uint8_t *src, size_t len)
{ {
ADIv5_AP_t *ap = adiv5_target_ap(target);
/* Find the size of our 32-bit data buffer */ /* Find the size of our 32-bit data buffer */
uint32_t offset = dest % 4; uint32_t offset = dest % 4;
uint32_t words = (offset + len + 3) / 4; uint32_t words = (offset + len + 3) / 4;
@ -534,42 +533,26 @@ static int samd_flash_write(struct target_s *target, uint32_t dest,
end_of_this_page = page + (SAMD_PAGE_SIZE - 4); end_of_this_page = page + (SAMD_PAGE_SIZE - 4);
if (addr > page || (page == last_page && end < end_of_this_page)) { if (addr > page || (page == last_page && end < end_of_this_page)) {
/* Setup write */
adiv5_ap_write(ap, ADIV5_AP_CSW, ap->csw |
ADIV5_AP_CSW_SIZE_WORD | ADIV5_AP_CSW_ADDRINC_SINGLE);
adiv5_ap_write(ap, ADIV5_AP_TAR, addr);
adiv5_dp_write(ap->dp, ADIV5_DP_SELECT,
((uint32_t)ap->apsel << 24)|(ADIV5_AP_DRW & 0xF0));
/* Partial, manual page write */ /* Partial, manual page write */
for (; addr <= MINIMUM(end, end_of_this_page); addr += 4, i++) { target_mem_write(target, addr, &data[i],
adiv5_dp_write(ap->dp, ADIV5_AP_DRW, data[i]); MINIMUM(end, end_of_this_page));
}
/* Unlock */ /* Unlock */
samd_unlock_current_address(target); samd_unlock_current_address(target);
/* Issue the write page command */ /* Issue the write page command */
target_mem_write32(target, SAMD_NVMC_CTRLA, target_mem_write32(target, SAMD_NVMC_CTRLA,
SAMD_CTRLA_CMD_KEY | SAMD_CTRLA_CMD_WRITEPAGE); SAMD_CTRLA_CMD_KEY | SAMD_CTRLA_CMD_WRITEPAGE);
} else { } else {
/* Write first word to set address */ /* Write first word to set address */
target_mem_write32(target, addr, data[i]); addr += 4; i++; target_mem_write32(target, addr, data[i]);
addr += 4; i++;
/* Unlock */ /* Unlock */
samd_unlock_current_address(target); samd_unlock_current_address(target);
/* Set up write */ target_mem_write(target, addr, &data[i],
adiv5_ap_write(ap, ADIV5_AP_CSW, ap->csw | MINIMUM(end, end_of_this_page));
ADIV5_AP_CSW_SIZE_WORD | ADIV5_AP_CSW_ADDRINC_SINGLE);
adiv5_ap_write(ap, ADIV5_AP_TAR, addr);
adiv5_dp_write(ap->dp, ADIV5_DP_SELECT,
((uint32_t)ap->apsel << 24)|(ADIV5_AP_DRW & 0xF0));
/* Full, automatic page write */
for (; addr < page + SAMD_PAGE_SIZE; addr += 4, i++) {
adiv5_dp_write(ap->dp, ADIV5_AP_DRW, data[i]);
}
} }
/* Poll for NVM Ready */ /* Poll for NVM Ready */