soc: Add initial ESP32-C3 support

From internal commit 7761d6e8

components/soc/esp32c3/include/soc/boot_mode.h

@@ -0,0 +1,101 @@
+// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
+//
+// 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.
+
+#ifndef _SOC_BOOT_MODE_H_
+#define _SOC_BOOT_MODE_H_
+
+#include "soc.h"
+
+/*SPI Boot*/
+#define IS_1XXX(v)                              (((v)&0x08)==0x08)
+
+/*Download Boot, SPI(or SDIO_V2)/UART0*/
+#define IS_00XX(v)                              (((v)&0x0c)==0x00)
+
+/*Download Boot, SDIO/UART0/UART1,FEI_FEO V2*/
+#define IS_0000(v)                              (((v)&0x0f)==0x00)
+
+/*Download Boot, SDIO/UART0/UART1,FEI_REO V2*/
+#define IS_0001(v)                              (((v)&0x0f)==0x01)
+
+/*Download Boot, SDIO/UART0/UART1,REI_FEO V2*/
+#define IS_0010(v)                              (((v)&0x0f)==0x02)
+
+/*Download Boot, SDIO/UART0/UART1,REI_REO V2*/
+#define IS_0011(v)                              (((v)&0x0f)==0x03)
+
+/*legacy SPI Boot*/
+#define IS_0100(v)                              (((v)&0x0f)==0x04)
+
+/*ATE/ANALOG Mode*/
+#define IS_0101(v)                              (((v)&0x0f)==0x05)
+
+/*SPI(or SDIO_V1) download Mode*/
+#define IS_0110(v)                              (((v)&0x0f)==0x06)
+
+/*Diagnostic Mode+UART0 download Mode*/
+#define IS_0111(v)                              (((v)&0x0f)==0x07)
+
+
+
+#define BOOT_MODE_GET()                         (GPIO_REG_READ(GPIO_STRAP_REG))
+
+/*do not include download mode*/
+#define ETS_IS_UART_BOOT()                      IS_0111(BOOT_MODE_GET())
+
+/*all spi boot including spi/legacy*/
+#define ETS_IS_FLASH_BOOT()                     (IS_1XXX(BOOT_MODE_GET()) || IS_0100(BOOT_MODE_GET()))
+
+/*all faster spi boot including spi*/
+#define ETS_IS_FAST_FLASH_BOOT()                IS_1XXX(BOOT_MODE_GET())
+
+#if SUPPORT_SDIO_DOWNLOAD
+
+/*all sdio V2 of failing edge input, failing edge output*/
+#define ETS_IS_SDIO_FEI_FEO_V2_BOOT()           IS_0000(BOOT_MODE_GET())
+
+/*all sdio V2 of failing edge input, raising edge output*/
+#define ETS_IS_SDIO_FEI_REO_V2_BOOT()           IS_0001(BOOT_MODE_GET())
+
+/*all sdio V2 of raising edge input, failing edge output*/
+#define ETS_IS_SDIO_REI_FEO_V2_BOOT()           IS_0010(BOOT_MODE_GET())
+
+/*all sdio V2 of raising edge input, raising edge output*/
+#define ETS_IS_SDIO_REI_REO_V2_BOOT()           IS_0011(BOOT_MODE_GET())
+
+/*all sdio V1 of raising edge input, failing edge output*/
+#define ETS_IS_SDIO_REI_FEO_V1_BOOT()           IS_0110(BOOT_MODE_GET())
+
+/*do not include joint download mode*/
+#define ETS_IS_SDIO_BOOT()                      IS_0110(BOOT_MODE_GET())
+#else
+
+/*do not include joint download mode*/
+#define ETS_IS_SPI_DOWNLOAD_BOOT()              IS_0110(BOOT_MODE_GET())
+
+#endif
+
+/*joint download boot*/
+#define ETS_IS_JOINT_DOWNLOAD_BOOT()                  IS_00XX(BOOT_MODE_GET())
+
+/*ATE mode*/
+#define ETS_IS_ATE_BOOT()                       IS_0101(BOOT_MODE_GET())
+
+/*used by  ETS_IS_SDIO_UART_BOOT*/
+#define SEL_NO_BOOT                             0
+#define SEL_SDIO_BOOT                           BIT0
+#define SEL_UART_BOOT                           BIT1
+#define SEL_SPI_SLAVE_BOOT                      BIT2
+
+#endif /* _SOC_BOOT_MODE_H_ */