22 #include "hw/acpi/bios-linker-loader.h"
30  * - allocate memory chunks and initialize them from QEMU FW CFG files
31  * - link allocated chunks by storing pointer to one chunk into another
32  * - calculate ACPI checksum of part of the chunk and store into same chunk
40          * COMMAND_ALLOCATE - allocate a table from @alloc.file
54          * COMMAND_ADD_POINTER - patch the table (originating from
67          * COMMAND_ADD_CHECKSUM - calculate checksum of the range specified by
70          * Checksum simply sums -X for each byte X in the range
71          * using 8-bit math.
77             uint32_t length;  member
81          * COMMAND_WRITE_POINTER - write the fw_cfg file (originating from
116  * An internal type used for book-keeping file entries
133     linker->cmd_blob = g_array_new(false, true /* clear */, 1);  in bios_linker_loader_init()
134     linker->file_list = g_array_new(false, true /* clear */,  in bios_linker_loader_init()
145     g_array_free(linker->cmd_blob, true);  in bios_linker_loader_cleanup()
147     for (i = 0; i < linker->file_list->len; i++) {  in bios_linker_loader_cleanup()
148         entry = &g_array_index(linker->file_list, BiosLinkerFileEntry, i);  in bios_linker_loader_cleanup()
149         g_free(entry->name);  in bios_linker_loader_cleanup()
151     g_array_free(linker->file_list, true);  in bios_linker_loader_cleanup()
161     for (i = 0; i < linker->file_list->len; i++) {  in bios_linker_find_file()
162         entry = &g_array_index(linker->file_list, BiosLinkerFileEntry, i);  in bios_linker_find_file()
163         if (!strcmp(entry->name, name)) {  in bios_linker_find_file()
171  * board code must realize fw_cfg first, as a fixed device, before
200     assert(!(alloc_align & (alloc_align - 1)));  in bios_linker_loader_alloc()
203     g_array_append_val(linker->file_list, file);  in bios_linker_loader_alloc()
206     strncpy(entry.alloc.file, file_name, sizeof entry.alloc.file - 1);  in bios_linker_loader_alloc()
213     g_array_prepend_vals(linker->cmd_blob, &entry, sizeof entry);  in bios_linker_loader_alloc()
220  * Checksum calculation simply sums -X for each byte X in the range
221  * using 8-bit math (i.e. ACPI checksum).
239     assert(start_offset < file->blob->len);  in bios_linker_loader_add_checksum()
240     assert(start_offset + size <= file->blob->len);  in bios_linker_loader_add_checksum()
244     *(file->blob->data + checksum_offset) = 0;  in bios_linker_loader_add_checksum()
246     strncpy(entry.cksum.file, file_name, sizeof entry.cksum.file - 1);  in bios_linker_loader_add_checksum()
250     entry.cksum.length = cpu_to_le32(size);  in bios_linker_loader_add_checksum()
252     g_array_append_vals(linker->cmd_blob, &entry, sizeof entry);  in bios_linker_loader_add_checksum()
287     assert(dst_patched_offset < dst_file->blob->len);  in bios_linker_loader_add_pointer()
288     assert(dst_patched_offset + dst_patched_size <= dst_file->blob->len);  in bios_linker_loader_add_pointer()
289     assert(src_offset < source_file->blob->len);  in bios_linker_loader_add_pointer()
293             sizeof entry.pointer.dest_file - 1);  in bios_linker_loader_add_pointer()
295             sizeof entry.pointer.src_file - 1);  in bios_linker_loader_add_pointer()
303     memcpy(dst_file->blob->data + dst_patched_offset,  in bios_linker_loader_add_pointer()
306     g_array_append_vals(linker->cmd_blob, &entry, sizeof entry);  in bios_linker_loader_add_pointer()
337     assert(src_offset < source_file->blob->len);  in bios_linker_loader_write_pointer()
340             sizeof entry.wr_pointer.dest_file - 1);  in bios_linker_loader_write_pointer()
342             sizeof entry.wr_pointer.src_file - 1);  in bios_linker_loader_write_pointer()
350     g_array_append_vals(linker->cmd_blob, &entry, sizeof entry);  in bios_linker_loader_write_pointer()