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target_flash: optimize flash prepare/done calls on erase

This commit is contained in:
Rafael Silva 2022-08-22 18:44:28 +01:00 committed by Rachel Mant
parent 7f25846d36
commit be4b07f5ef
1 changed files with 13 additions and 3 deletions
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16
src/target/target_flash.c
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@ -132,15 +132,25 @@ int target_flash_erase(target *t, target_addr_t addr, size_t len)
return 1;
}
/* terminate flash operations if we're not in the same target flash */
for (target_flash_s *target_f = t->flash; target_f; target_f = target_f->next)
if (target_f != f)
ret |= flash_done(target_f);
const target_addr_t local_start_addr = addr & ~(f->blocksize - 1U);
const target_addr_t local_end_addr = local_start_addr + f->blocksize;
if (flash_prepare(f) == 0)
ret |= f->erase(f, local_start_addr, f->blocksize);
flash_done(f);
if (flash_prepare(f) != 0)
return -1;
ret |= f->erase(f, local_start_addr, f->blocksize);
len -= MIN(local_end_addr - addr, len);
addr = local_end_addr;
/* Issue flash done on last operation */
if (len == 0)
ret |= flash_done(f);
}
return ret;
}