Made the NOR flash emulation a bit more flexible, but not yet flexible enough to properly support the flash chip in the MegaWiFi cart

1 files changed, 30 insertions, 7 deletions

diff --git a/romdb.c b/romdb.c
index e580797..65e1e9b 100644
--- a/romdb.c
+++ b/romdb.c
@@ -57,6 +57,7 @@ void free_rom_info(rom_info *info)
 	free(info->port2_override);
 	free(info->ext_override);
 	free(info->mouse_mode);
+	free(info->nor);
 }
 
 void cart_serialize(system_header *sys, serialize_buffer *buf)
@@ -500,15 +501,15 @@ void process_nor_def(char *key, map_iter_state *state)
 		if (!page_size) {
 			fatal_error("ROM DB map entry %d with address %s has device type NOR, but the NOR page size is not defined\n", state->index, key);
 		}
-		state->info->save_page_size = atoi(size);
-		if (!state->info->save_page_size) {
-			fatal_error("NOR page size %s is invalid\n", size);
+		uint32_t save_page_size = atoi(page_size);
+		if (!save_page_size) {
+			fatal_error("NOR page size %s is invalid\n", page_size);
 		}
 		char *product_id = tern_find_path(state->root, "NOR\0product_id\0", TVAL_PTR).ptrval;
 		if (!product_id) {
 			fatal_error("ROM DB map entry %d with address %s has device type NOR, but the NOR product ID is not defined\n", state->index, key);
 		}
-		state->info->save_product_id = strtol(product_id, NULL, 16);
+		uint16_t save_product_id = strtol(product_id, NULL, 16);
 		char *bus = tern_find_path(state->root, "NOR\0bus\0", TVAL_PTR).ptrval;
 		if (!strcmp(bus, "odd")) {
 			state->info->save_bus = RAM_FLAG_ODD;
@@ -519,7 +520,26 @@ void process_nor_def(char *key, map_iter_state *state)
 		}
 		state->info->save_type = SAVE_NOR;
 		state->info->save_buffer = malloc(state->info->save_size);
-		memset(state->info->save_buffer, 0xFF, state->info->save_size);
+		char *init = tern_find_path_default(state->root, "NOR\0init\0", (tern_val){.ptrval="FF"}, TVAL_PTR).ptrval;
+		if (!strcmp(init, "ROM")) {
+			uint32_t init_size = state->rom_size > state->info->save_size ? state->info->save_size : state->rom_size;
+			memcpy(state->info->save_buffer, state->rom, init_size);
+			if (state->info->save_bus == RAM_FLAG_BOTH) {
+				byteswap_rom(state->info->save_size, (uint16_t *)state->info->save_buffer);
+			}
+		} else {
+			memset(state->info->save_buffer, strtol(init, NULL, 16), state->info->save_size);
+		}
+		state->info->nor = calloc(1, sizeof(nor_state));
+		nor_flash_init(state->info->nor, state->info->save_buffer, state->info->save_size, save_page_size, save_product_id, state->info->save_bus);
+		char *cmd1 = tern_find_path(state->root, "NOR\0cmd_address1\0", TVAL_PTR).ptrval;
+		if (cmd1) {
+			state->info->nor->cmd_address1 = strtol(cmd1, NULL, 16);
+		}
+		char *cmd2 = tern_find_path(state->root, "NOR\0cmd_address2\0", TVAL_PTR).ptrval;
+		if (cmd2) {
+			state->info->nor->cmd_address2 = strtol(cmd2, NULL, 16);
+		}
 	}
 }
 
@@ -616,8 +636,7 @@ void map_iter_fun(char *key, tern_val val, uint8_t valtype, void *data)
 			state->info->save_buffer = lock_info.save_buffer;
 			state->info->save_size = lock_info.save_size;
 			state->info->save_mask = lock_info.save_mask;
-			state->info->save_page_size = lock_info.save_page_size;
-			state->info->save_product_id = lock_info.save_product_id;
+			state->info->nor = lock_info.nor;
 			state->info->save_type = lock_info.save_type;
 			state->info->save_bus = lock_info.save_bus;
 			lock_info.save_buffer = NULL;
@@ -667,6 +686,10 @@ void map_iter_fun(char *key, tern_val val, uint8_t valtype, void *data)
 		map->write_8 = nor_flash_write_b;
 		map->read_16 = nor_flash_read_w;
 		map->read_8 = nor_flash_read_b;
+		if (state->info->save_bus == RAM_FLAG_BOTH) {
+			map->flags |= MMAP_READ_CODE | MMAP_CODE;
+			map->buffer = state->info->save_buffer;
+		}
 		map->mask = 0xFFFFFF;
 	} else if (!strcmp(dtype, "Sega mapper")) {
 		state->info->mapper_type = MAPPER_SEGA;