feat(spiflash): add initial structure for SPI Flash support: H2, C6, C2, C5, P4, C61

Author: antmak

include/target/impl/flash_init_no_spiconfig.h

@@ -0,0 +1,29 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0 OR MIT
+ */
+
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <log.h>
+
+/**
+  * @brief SPI Flash init. CONFIG SPI is unsupported
+  *
+  * @param spiconfig: Deprecated compatibility API value, must be 0
+  *
+  * @param legacy: Deprecated compatibility API value, must be false
+  *
+  */
+extern void esp_rom_spiflash_attach(uint32_t spiconfig, bool legacy);
+
+inline static
+void flash_impl_init_no_spiconfig(void)
+{
+    STUB_LOG_TRACE();
+    esp_rom_spiflash_attach(0, false);
+}

src/esp32c2/include/soc/spi_mem_reg.h

@@ -5,7 +5,7 @@
  */
 #pragma once
 
-#include <private/soc_utils.h>
+#include <bit_utils.h>
 #include "reg_base.h"
 
 #define REG_SPI_MEM_BASE(i)         (DR_REG_SPI0_BASE - (i) * 0x1000)

src/esp32c2/include/target_spec/periph_defs.h

@@ -0,0 +1,14 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0 OR MIT
+ */
+
+#pragma once
+
+#include <soc/spi_mem_reg.h>
+
+#define PERIPHS_SPI_FLASH_CMD               SPI_MEM_CMD_REG(1)
+#define PERIPHS_SPI_FLASH_C0                SPI_MEM_W0_REG(1)
+
+#define PERIPHS_SPI_FLASH_BITS_RDID         SPI_MEM_FLASH_RDID

src/esp32c2/src/flash.c

@@ -4,16 +4,26 @@
  * SPDX-License-Identifier: Apache-2.0 OR MIT
  */
 
+#include <stdint.h>
+#include <log.h>
 #include <target/flash.h>
+#include <target/impl/flash_init_no_spiconfig.h>
+#include <target/impl/flash_get_id_from_rom.h>
+#include <target/impl/flash_get_config_from_rom.h>
 
-void stub_target_flash_init(void *state)
+void stub_target_flash_init(void)
 {
-    (void)state;
-    // TODO: Implement
+    STUB_LOG_TRACE();
+    flash_impl_init_no_spiconfig();
 }
 
-void stub_target_flash_deinit(const void *state)
+uint32_t stub_target_flash_get_flash_id(void)
 {
-    (void)state;
-    // TODO: Implement
+    STUB_LOG_TRACE();
+    return flash_impl_get_id_from_rom();
+}
+
+const esp_rom_spiflash_chip_t * stub_target_flash_get_config(void)
+{
+    return flash_impl_get_config_from_rom();
 }

src/esp32c5/include/soc/spi1_mem_reg.h

@@ -5,7 +5,7 @@
  */
 #pragma once
 
-#include <private/soc_utils.h>
+#include <bit_utils.h>
 #include "reg_base.h"
 
 #define REG_SPI_MEM_BASE(i) (DR_REG_SPIMEM0_BASE + (i) * 0x1000)     // SPIMEM0 and SPIMEM1

src/esp32c5/include/target_spec/periph_defs.h

@@ -0,0 +1,14 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0 OR MIT
+ */
+
+#pragma once
+
+#include <soc/spi1_mem_reg.h>
+
+#define PERIPHS_SPI_FLASH_CMD               SPI_MEM_CMD_REG(1)
+#define PERIPHS_SPI_FLASH_C0                SPI_MEM_W0_REG(1)
+
+#define PERIPHS_SPI_FLASH_BITS_RDID         SPI_MEM_FLASH_RDID

src/esp32c5/src/flash.c

@@ -4,16 +4,26 @@
  * SPDX-License-Identifier: Apache-2.0 OR MIT
  */
 
+#include <stdint.h>
+#include <log.h>
 #include <target/flash.h>
+#include <target/impl/flash_init_no_spiconfig.h>
+#include <target/impl/flash_get_id_from_rom.h>
+#include <target/impl/flash_get_config_from_rom.h>
 
-void stub_target_flash_init(void *state)
+void stub_target_flash_init(void)
 {
-    (void)state;
-    // TODO: Implement
+    STUB_LOG_TRACE();
+    flash_impl_init_no_spiconfig();
 }
 
-void stub_target_flash_deinit(const void *state)
+uint32_t stub_target_flash_get_flash_id(void)
 {
-    (void)state;
-    // TODO: Implement
+    STUB_LOG_TRACE();
+    return flash_impl_get_id_from_rom();
+}
+
+const esp_rom_spiflash_chip_t * stub_target_flash_get_config(void)
+{
+    return flash_impl_get_config_from_rom();
 }

src/esp32c6/include/soc/spi_mem_reg.h

@@ -5,7 +5,7 @@
  */
 #pragma once
 
-#include <private/soc_utils.h>
+#include <bit_utils.h>
 #include "reg_base.h"
 
 #define REG_SPI_MEM_BASE(i)         (DR_REG_SPI0_BASE + (i) * 0x1000) // SPIMEM0 and SPIMEM1

src/esp32c6/include/target_spec/periph_defs.h

@@ -0,0 +1,14 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0 OR MIT
+ */
+
+#pragma once
+
+#include <soc/spi_mem_reg.h>
+
+#define PERIPHS_SPI_FLASH_CMD               SPI_MEM_CMD_REG(1)
+#define PERIPHS_SPI_FLASH_C0                SPI_MEM_W0_REG(1)
+
+#define PERIPHS_SPI_FLASH_BITS_RDID         SPI_MEM_FLASH_RDID

src/esp32c6/src/flash.c

@@ -4,16 +4,26 @@
  * SPDX-License-Identifier: Apache-2.0 OR MIT
  */
 
+#include <stdint.h>
+#include <log.h>
 #include <target/flash.h>
+#include <target/impl/flash_init_no_spiconfig.h>
+#include <target/impl/flash_get_id_from_rom.h>
+#include <target/impl/flash_get_config_from_rom.h>
 
-void stub_target_flash_init(void *state)
+void stub_target_flash_init(void)
 {
-    (void)state;
-    // TODO: Implement
+    STUB_LOG_TRACE();
+    flash_impl_init_no_spiconfig();
 }
 
-void stub_target_flash_deinit(const void *state)
+uint32_t stub_target_flash_get_flash_id(void)
 {
-    (void)state;
-    // TODO: Implement
+    STUB_LOG_TRACE();
+    return flash_impl_get_id_from_rom();
+}
+
+const esp_rom_spiflash_chip_t * stub_target_flash_get_config(void)
+{
+    return flash_impl_get_config_from_rom();
 }