From 1eabc36c84fc15f11339d00a52290779564e517a Mon Sep 17 00:00:00 2001
From: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Date: Tue, 24 Jan 2023 07:05:05 +0100
Subject: [PATCH] soc/software/libXX/YY.h: adding extern C (required to link
 with cpp code)

---
 litex/soc/software/libbase/memtest.h         | 8 ++++++++
 litex/soc/software/libbase/progress.h        | 8 ++++++++
 litex/soc/software/libbase/spiflash.h        | 8 ++++++++
 litex/soc/software/liblitedram/bist.h        | 8 ++++++++
 litex/soc/software/liblitedram/sdram.h       | 8 ++++++++
 litex/soc/software/liblitedram/sdram_dbg.h   | 8 ++++++++
 litex/soc/software/liblitedram/sdram_spd.h   | 8 ++++++++
 litex/soc/software/liblitedram/utils.h       | 8 ++++++++
 litex/soc/software/libliteeth/inet.h         | 8 ++++++++
 litex/soc/software/libliteeth/mdio.h         | 8 ++++++++
 litex/soc/software/libliteeth/tftp.h         | 8 ++++++++
 litex/soc/software/libliteeth/udp.h          | 8 ++++++++
 litex/soc/software/liblitesata/sata.h        | 8 ++++++++
 litex/soc/software/liblitesdcard/sdcard.h    | 8 ++++++++
 litex/soc/software/liblitesdcard/spisdcard.h | 8 ++++++++
 litex/soc/software/liblitespi/spiflash.h     | 8 ++++++++
 16 files changed, 128 insertions(+)

diff --git a/litex/soc/software/libbase/memtest.h b/litex/soc/software/libbase/memtest.h
index 230598ce8..955ed80c7 100644
--- a/litex/soc/software/libbase/memtest.h
+++ b/litex/soc/software/libbase/memtest.h
@@ -1,6 +1,10 @@
 #ifndef __MEMTEST_H
 #define __MEMTEST_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdbool.h>
 
 #include <generated/csr.h>
@@ -33,4 +37,8 @@ int memtest_data(unsigned int *addr, unsigned long size, int random, struct memt
 void memspeed(unsigned int *addr, unsigned long size, bool read_only, bool random);
 int memtest(unsigned int *addr, unsigned long maxsize);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __MEMTEST_H */
diff --git a/litex/soc/software/libbase/progress.h b/litex/soc/software/libbase/progress.h
index 75aa9c4f8..6214ae5c7 100644
--- a/litex/soc/software/libbase/progress.h
+++ b/litex/soc/software/libbase/progress.h
@@ -2,6 +2,10 @@
 #ifndef __PROGRSS_H
 #define __PROGRSS_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* Initialize a progress bar. If max > 0 a one line progress
  * bar is printed where 'max' corresponds to 100%. If max == 0
  * a multi line progress bar is printed.
@@ -13,4 +17,8 @@ void init_progression_bar(int max);
  */
 void show_progress(int now);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /*  __PROGRSS_H */
diff --git a/litex/soc/software/libbase/spiflash.h b/litex/soc/software/libbase/spiflash.h
index 7d6171bde..67b0d0e78 100644
--- a/litex/soc/software/libbase/spiflash.h
+++ b/litex/soc/software/libbase/spiflash.h
@@ -1,9 +1,17 @@
 #ifndef __SPIFLASH_H
 #define __SPIFLASH_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 void write_to_flash_page(unsigned int addr, const unsigned char *c, unsigned int len);
 void erase_flash_sector(unsigned int addr);
 void erase_flash(void);
 void write_to_flash(unsigned int addr, const unsigned char *c, unsigned int len);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __SPIFLASH_H */
diff --git a/litex/soc/software/liblitedram/bist.h b/litex/soc/software/liblitedram/bist.h
index ab4c676ec..00b53bcd8 100644
--- a/litex/soc/software/liblitedram/bist.h
+++ b/litex/soc/software/liblitedram/bist.h
@@ -4,9 +4,17 @@
 #ifndef __SDRAM_BIST_H
 #define __SDRAM_BIST_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 
 void sdram_bist(uint32_t burst_length, uint32_t random);
 int sdram_hw_test(uint64_t origin, uint64_t size, uint64_t burst_length);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __SDRAM_BIST_H */
diff --git a/litex/soc/software/liblitedram/sdram.h b/litex/soc/software/liblitedram/sdram.h
index d8df2b2c1..8344d3ce8 100644
--- a/litex/soc/software/liblitedram/sdram.h
+++ b/litex/soc/software/liblitedram/sdram.h
@@ -1,6 +1,10 @@
 #ifndef __SDRAM_H
 #define __SDRAM_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <generated/csr.h>
 
 /*-----------------------------------------------------------------------*/
@@ -53,4 +57,8 @@ int sdram_init(void);
 /*-----------------------------------------------------------------------*/
 void sdram_debug(void);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __SDRAM_H */
diff --git a/litex/soc/software/liblitedram/sdram_dbg.h b/litex/soc/software/liblitedram/sdram_dbg.h
index 830ef9320..fd22c21ab 100644
--- a/litex/soc/software/liblitedram/sdram_dbg.h
+++ b/litex/soc/software/liblitedram/sdram_dbg.h
@@ -1,6 +1,10 @@
 #ifndef __SDRAM_DBG_H
 #define __SDRAM_DBG_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <generated/csr.h>
 
 #ifdef CSR_SDRAM_BASE
@@ -54,4 +58,8 @@ int readback_compare(struct readback *readback, struct readback *other, int verb
 
 #endif /* CSR_SDRAM_BASE */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __SDRAM_DBG_H */
diff --git a/litex/soc/software/liblitedram/sdram_spd.h b/litex/soc/software/liblitedram/sdram_spd.h
index 28a680135..cfe06f93e 100644
--- a/litex/soc/software/liblitedram/sdram_spd.h
+++ b/litex/soc/software/liblitedram/sdram_spd.h
@@ -4,6 +4,10 @@
 #ifndef __SDRAM_SPD_H
 #define __SDRAM_SPD_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdbool.h>
 #include <stdint.h>
 #include <libbase/i2c.h>
@@ -34,4 +38,8 @@
 
 bool sdram_read_spd(uint8_t spd, uint16_t addr, uint8_t *buf, uint16_t len, bool send_stop);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __SDRAM_SPD_H */
diff --git a/litex/soc/software/liblitedram/utils.h b/litex/soc/software/liblitedram/utils.h
index 09ff07091..b80a3198a 100644
--- a/litex/soc/software/liblitedram/utils.h
+++ b/litex/soc/software/liblitedram/utils.h
@@ -4,6 +4,10 @@
 #ifndef __SDRAM_UTILS_H
 #define __SDRAM_UTILS_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 
 void print_size(uint64_t size);
@@ -11,4 +15,8 @@ void print_progress(const char * header, uint64_t origin, uint64_t size);
 
 uint64_t sdram_get_supported_memory(void);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __SDRAM_UTILS_H */
diff --git a/litex/soc/software/libliteeth/inet.h b/litex/soc/software/libliteeth/inet.h
index dbe8c7b6b..f64ee212c 100644
--- a/litex/soc/software/libliteeth/inet.h
+++ b/litex/soc/software/libliteeth/inet.h
@@ -23,6 +23,10 @@
 #ifndef __INET_H
 #define __INET_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 
 static __inline uint16_t __bswap_16(uint16_t __x)
@@ -68,4 +72,8 @@ static uint16_t ntohs(uint16_t n)
     return u.c ? bswap_16(n) : n;
 }
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __INET_H */
diff --git a/litex/soc/software/libliteeth/mdio.h b/litex/soc/software/libliteeth/mdio.h
index bffa5a635..b751e0b99 100644
--- a/litex/soc/software/libliteeth/mdio.h
+++ b/litex/soc/software/libliteeth/mdio.h
@@ -1,6 +1,10 @@
 #ifndef __MDIO_H
 #define __MDIO_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define MDIO_CLK 0x01
 #define MDIO_OE	0x02
 #define MDIO_DO	0x04
@@ -16,4 +20,8 @@
 void mdio_write(int phyadr, int reg, int val);
 int mdio_read(int phyadr, int reg);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __MDIO_H */
diff --git a/litex/soc/software/libliteeth/tftp.h b/litex/soc/software/libliteeth/tftp.h
index 788731ba0..22dd44c55 100644
--- a/litex/soc/software/libliteeth/tftp.h
+++ b/litex/soc/software/libliteeth/tftp.h
@@ -1,6 +1,10 @@
 #ifndef __TFTP_H
 #define __TFTP_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 
 int tftp_get(uint32_t ip, uint16_t server_port, const char *filename,
@@ -8,5 +12,9 @@ int tftp_get(uint32_t ip, uint16_t server_port, const char *filename,
 int tftp_put(uint32_t ip, uint16_t server_port, const char *filename,
     const void *buffer, int size);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __TFTP_H */
 
diff --git a/litex/soc/software/libliteeth/udp.h b/litex/soc/software/libliteeth/udp.h
index 5691acf0b..854065179 100644
--- a/litex/soc/software/libliteeth/udp.h
+++ b/litex/soc/software/libliteeth/udp.h
@@ -1,6 +1,10 @@
 #ifndef __UDP_H
 #define __UDP_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define ETHMAC_EV_SRAM_WRITER	0x1
 #define ETHMAC_EV_SRAM_READER	0x1
 
@@ -22,4 +26,8 @@ void udp_service(void);
 void eth_init(void);
 void eth_mode(void);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __UDP_H */
diff --git a/litex/soc/software/liblitesata/sata.h b/litex/soc/software/liblitesata/sata.h
index bc7845702..122168b2f 100644
--- a/litex/soc/software/liblitesata/sata.h
+++ b/litex/soc/software/liblitesata/sata.h
@@ -4,6 +4,10 @@
 #ifndef __SATA_H
 #define __SATA_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <generated/csr.h>
 
 /*-----------------------------------------------------------------------*/
@@ -29,4 +33,8 @@ void sata_write(uint32_t sector, uint32_t count, uint8_t* buf);
 
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __SATA_H */
diff --git a/litex/soc/software/liblitesdcard/sdcard.h b/litex/soc/software/liblitesdcard/sdcard.h
index eb0663211..d8aa74b9b 100644
--- a/litex/soc/software/liblitesdcard/sdcard.h
+++ b/litex/soc/software/liblitesdcard/sdcard.h
@@ -4,6 +4,10 @@
 #ifndef __SDCARD_H
 #define __SDCARD_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <generated/csr.h>
 
 #define CLKGEN_STATUS_BUSY		0x1
@@ -107,4 +111,8 @@ void fatfs_set_ops_sdcard(void);
 
 #endif /* CSR_SDCORE_BASE */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __SDCARD_H */
diff --git a/litex/soc/software/liblitesdcard/spisdcard.h b/litex/soc/software/liblitesdcard/spisdcard.h
index deda3eb21..53c3ae682 100644
--- a/litex/soc/software/liblitesdcard/spisdcard.h
+++ b/litex/soc/software/liblitesdcard/spisdcard.h
@@ -5,6 +5,10 @@
 #ifndef __SPISDCARD_H
 #define __SPISDCARD_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <generated/csr.h>
 
 #ifdef CSR_SPISDCARD_BASE
@@ -54,4 +58,8 @@ void fatfs_set_ops_spisdcard(void);
 
 #endif /* CSR_SPISDCARD_BASE */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __SPISDCARD_H */
diff --git a/litex/soc/software/liblitespi/spiflash.h b/litex/soc/software/liblitespi/spiflash.h
index e76a7d2a2..5b6c04c8c 100644
--- a/litex/soc/software/liblitespi/spiflash.h
+++ b/litex/soc/software/liblitespi/spiflash.h
@@ -1,6 +1,10 @@
 #ifndef __LITESPI_FLASH_H
 #define __LITESPI_FLASH_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define SPI_FLASH_BLOCK_SIZE 256
 #define CRC32_ERASED_FLASH	 0xFEA8A821
 
@@ -9,4 +13,8 @@ void spiflash_dummy_bits_setup(unsigned int dummy_bits);
 void spiflash_memspeed(void);
 void spiflash_init(void);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __LITESPI_FLASH_H */