diff options
Diffstat (limited to 'protocol.c')
| -rw-r--r-- | protocol.c | 31 |
1 files changed, 31 insertions, 0 deletions
@@ -265,12 +265,42 @@ int protocol_v2_mark_dirty(struct mbox_context *context, io->req.v2.size, WINDOW_DIRTY); } +int protocol_v2_erase(struct mbox_context *context, + struct protocol_erase *io) +{ + size_t start, len; + int rc; + + if (!(context->current && context->current_is_write)) { + MSG_ERR("Tried to call erase without open write window\n"); + return -EPERM; + } + + MSG_INFO("Erase window @ 0x%.8x for 0x%.8x\n", + io->req.offset << context->block_size_shift, + io->req.size << context->block_size_shift); + + rc = window_set_bytemap(context, context->current, io->req.offset, + io->req.size, WINDOW_ERASED); + if (rc < 0) { + return rc; + } + + /* Write 0xFF to mem -> This ensures consistency between flash & ram */ + start = io->req.offset << context->block_size_shift; + len = io->req.size << context->block_size_shift; + memset(context->current->mem + start, 0xFF, len); + + return 0; +} + static const struct protocol_ops protocol_ops_v1 = { .reset = protocol_v1_reset, .get_info = protocol_v1_get_info, .get_flash_info = protocol_v1_get_flash_info, .create_window = protocol_v1_create_window, .mark_dirty = protocol_v1_mark_dirty, + .erase = NULL, }; static const struct protocol_ops protocol_ops_v2 = { @@ -279,6 +309,7 @@ static const struct protocol_ops protocol_ops_v2 = { .get_flash_info = protocol_v2_get_flash_info, .create_window = protocol_v2_create_window, .mark_dirty = protocol_v2_mark_dirty, + .erase = protocol_v2_erase, }; static const struct protocol_ops *protocol_ops_map[] = { |
