| /* |
| * Mailbox Daemon Window Helpers |
| * |
| * Copyright 2017 IBM |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <syslog.h> |
| |
| extern "C" { |
| #include "common.h" |
| } |
| |
| #include "mboxd_flash.h" |
| #include "mboxd_pnor_partition_table.h" |
| |
| /* |
| * copy_flash() - Copy data from the virtual pnor into a provided buffer |
| * @context: The mbox context pointer |
| * @offset: The pnor offset to copy from (bytes) |
| * @mem: The buffer to copy into (must be of atleast 'size' bytes) |
| * @size: The number of bytes to copy |
| * |
| * Return: 0 on success otherwise negative error code |
| */ |
| int copy_flash(struct mbox_context* context, uint32_t offset, void* mem, |
| uint32_t size) |
| { |
| int rc = 0; |
| |
| MSG_DBG("Copy virtual pnor to %p for size 0x%.8x from offset 0x%.8x\n", |
| mem, size, offset); |
| |
| /* The virtual PNOR partition table starts at offset 0 in the virtual |
| * pnor image. Check if host asked for an offset that lies within the |
| * partition table. |
| */ |
| size_t sz = |
| vpnor_get_partition_table_size(context) << context->block_size_shift; |
| if (offset < sz) |
| { |
| const struct pnor_partition_table* table = |
| vpnor_get_partition_table(context); |
| memcpy(mem, |
| ((uint8_t*)table) + offset, |
| min_u32(sz - offset, size)); |
| } |
| |
| return rc; |
| } |