<Qemu SiFive-E> Add platform support for Qemu SiFive-E

- Add qemu sifive_e platform and bootloader support Note: Bootloader to be used with following command `qemu-system-riscv32 ... -device loader,file=<path to build.elf> ...` - Updates on platform files to reduce size for bootloader - Add USE_TIMER to enable/disable from platform config. - [driver] PLIC will only build if N_PLAT_IRQS are non 0 Issue: #233
VisorFolks · Feb 19, 2023 · bdc735a · bdc735a
1 parent 6df3ffd
commit bdc735a
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Showing 21 changed files with 746 additions and 6 deletions.
diff --git a/README.md b/README.md
@@ -25,10 +25,10 @@ Connect with us over VisorFolks discord server: < [**JOIN**](https://discord.gg/
 
 ### Supported Platforms
 
-| Atmel      | SiFive      | STMicro     | TI          | Raspberry Pi |
-| ---------- | ----------- | ----------- | ----------- | -------------|
-| ATMega328P | FE310-G002  | Coming soon | Coming soon | Coming soon  |
-| ATMega2560 |             |             |             |              |
+| Atmel      | SiFive        | STMicro     | TI          | Raspberry Pi |
+| ---------- | ------------- | ----------- | ----------- | -------------|
+| ATMega328P | FE310-G002    | Coming soon | Coming soon | Coming soon  |
+| ATMega2560 | QEMU SiFive-E |             |             |              |
 
 ### Programming Languages
 * asm/assembly

diff --git a/src/driver/interrupt/plic/build.mk b/src/driver/interrupt/plic/build.mk
@@ -11,8 +11,10 @@
 PLIC_PATH	:= $(GET_PATH)
 
 ifeq ($(ARCH), riscv)
+ifneq ($(N_PLAT_IRQS),0)
 
 DIR		:= $(PLIC_PATH)
 include mk/obj.mk
 
 endif
+endif
diff --git a/src/platform/sifive/common_fe310/platform/plat_timer.c b/src/platform/sifive/common_fe310/platform/plat_timer.c
@@ -147,7 +147,7 @@ static tvisor_timer_t *plat_timer_port;
  * plat_timer_setup - Timer driver setup function
  * To be exported to driver table.
  */
-static status_t plat_timer_setup(void)
+status_t plat_timer_setup(void)
 {
 	status_t ret = success;
 	const irqs_t *irq;
@@ -177,7 +177,7 @@ static status_t plat_timer_setup(void)
  * plat_timer_exit - Timer driver shutdown function
  * To be exported to driver table.
  */
-static status_t plat_timer_exit(void)
+status_t plat_timer_exit(void)
 {
 	const irqs_t *irq;
 	arch_di_mtime();
@@ -189,4 +189,6 @@ static status_t plat_timer_exit(void)
 	return timer_release_device();
 }
 
+#if USE_TIMER
 INCLUDE_DRIVER(plat_timer, plat_timer_setup, plat_timer_exit, 0, 1, 1);
+#endif
diff --git a/src/platform/sifive/common_fe310/platform/platform.c b/src/platform/sifive/common_fe310/platform/platform.c
@@ -75,12 +75,19 @@ void platform_setup()
 {
 	status_t ret = success;
 
+#if PRCI_CLK
 	driver_setup("sysclk_prci");
 	ret |= sysclk_reset();
+#endif
 
 	driver_setup("earlycon");
 	bootmsgs_enable();
+#ifdef BOOTLOADER
+	cyancore_insignia_lite();
+#else
 	cyancore_insignia();
+#endif
+
 #if PRINT_MEMORY_LAYOUT
 	platform_memory_layout();
 #endif

diff --git a/src/platform/sifive/fe310g002-bl/config.mk b/src/platform/sifive/fe310g002-bl/config.mk
@@ -88,10 +88,20 @@ $(eval $(call add_define,ERRATA_CIP578))
 #======================================================================
 SYSCLK_ENABLE	:= 1
 PRCI_CLK	:= 1
+$(eval $(call add_define,SYSCLK_ENABLE))
+$(eval $(call add_define,PRCI_CLK))
 #======================================================================
 
 #======================================================================
 # Bootload Configuration
 #======================================================================
 $(eval $(call add_define,BOOTLOADER))
+
+#======================================================================
+# Bootloader
+# \ Timer: Sched timer/wall clock
+#======================================================================
+USE_TIMER	?= 0
+$(eval $(call add_define,USE_TIMER))
+#======================================================================
 #======================================================================
diff --git a/src/platform/sifive/fe310g002/config.mk b/src/platform/sifive/fe310g002/config.mk
@@ -88,4 +88,13 @@ $(eval $(call add_define,ERRATA_CIP578))
 #======================================================================
 SYSCLK_ENABLE	:= 1
 PRCI_CLK	:= 1
+$(eval $(call add_define,SYSCLK_ENABLE))
+$(eval $(call add_define,PRCI_CLK))
+#======================================================================
+
+#======================================================================
+# Timer: Sched timer/wall clock
+#======================================================================
+USE_TIMER	?= 1
+$(eval $(call add_define,USE_TIMER))
 #======================================================================
diff --git a/src/platform/sifive/qemu-sifive-e-bl/build.mk b/src/platform/sifive/qemu-sifive-e-bl/build.mk
@@ -0,0 +1,28 @@
+#
+# CYANCORE LICENSE
+# Copyrights (C) 2019, Cyancore Team
+#
+# File Name		: build.mk
+# Description		: This file accumulates the build scripts from 
+#			  all other directories that have HiFive 1 Rev B
+#			  board support sources
+# Primary Author	: Akash Kollipara [akashkollipara@gmail.com]
+# Organisation		: Cyancore Core-Team
+#
+
+FE310G002_DIR	:= $(GET_PATH)
+
+ARCH		:= riscv
+BIT		:= 32
+ARCH_VARIANT	:= imac
+ARCH_ABI	:= ilp32
+TARGET_FLAGS	+= -march=rv32imac -mabi=$(ARCH_ABI)
+PLAT_INCLUDE	+= $(FE310G002_DIR)/include
+OUTPUT_FORMAT	:= elf32-littleriscv
+
+include $(FE310G002_DIR)/config.mk
+include $(FE310G002_DIR)/../common_fe310/build.mk
+$(eval $(call check_and_include,USE_DEFAULT_RESOURCES,$(FE310G002_DIR)/resources/build.mk))
+
+DIR		:= $(FE310G002_DIR)
+include mk/obj.mk
diff --git a/src/platform/sifive/qemu-sifive-e-bl/config.mk b/src/platform/sifive/qemu-sifive-e-bl/config.mk
@@ -0,0 +1,101 @@
+#
+# CYANCORE LICENSE
+# Copyrights (C) 2019, Cyancore Team
+#
+# File Name		: config.mk
+# Description		: This file defines configuration for HiFive 1B
+# Primary Author	: Akash Kollipara [akashkollipara@gmail.com]
+# Organisation		: Cyancore Core-Team
+#
+
+#======================================================================
+# Configuration file for Platforms
+#======================================================================
+
+#======================================================================
+# Platform Configuration
+# Do not alter below FLAGS unless explicitly mentioned
+#======================================================================
+N_CORES		:= 1
+$(eval $(call add_define,N_CORES))
+
+CCSMP		:= 0
+$(eval $(call add_define,CCSMP))
+
+$(eval $(call add_define,BIT))
+
+BOOT_CORE_ID:= 0
+$(eval $(call add_define,BOOT_CORE_ID))
+
+FLASH_START	:= 0x000001000
+FLASH_SIZE	:= 0x2000	# 8K
+RAM_START	:= 0x80000000
+RAM_SIZE	:= 0x4000	# 16K
+ITIM_START	:= 0x08000000
+ITIM_SIZE	:= 0x2000	# 8K
+HEAP_SIZE	?= 512
+STACK_SIZE	?= 0xc00
+STACK_SIZE_PCPU	?= 0xc00
+
+$(eval $(call add_define,HEAP_SIZE))
+$(eval $(call add_define,STACK_SIZE))
+$(eval $(call add_define,STACK_SIZE_PCPU))
+
+# Call this FLAG from Project config file if needed
+XCLK		?= 16000000
+ICLK		?= 72000000
+$(eval $(call add_define,XCLK))
+$(eval $(call add_define,ICLK))
+
+N_EXCEP		:= 12
+$(eval $(call add_define,N_EXCEP))
+
+N_IRQ		:= 12
+$(eval $(call add_define,N_IRQ))
+
+N_PLAT_IRQS	:= 0
+$(eval $(call add_define,N_PLAT_IRQS))
+
+MAX_INTERRUPTS_PER_DEVICE	:= 1
+$(eval $(call add_define,MAX_INTERRUPTS_PER_DEVICE))
+
+USE_SPINLOCK	?= 1
+$(eval $(call add_define,USE_SPINLOCK))
+
+#======================================================================
+# MEMBUF Configuration
+#======================================================================
+MEMBUF_SIZE	?= 1024
+$(eval $(call add_define,MEMBUF_SIZE))
+#======================================================================
+
+#======================================================================
+# GPIO Configuration
+#======================================================================
+N_PORT		:= 1
+$(eval $(call add_define,N_PORT))
+#======================================================================
+
+#======================================================================
+# Errata CIP-578
+#======================================================================
+ERRATA_CIP578	:= 1
+$(eval $(call add_define,ERRATA_CIP578))
+#======================================================================
+
+#======================================================================
+# PRCI Sysclk Configuration
+#======================================================================
+SYSCLK_ENABLE	:= 1
+PRCI_CLK	:= 0
+$(eval $(call add_define,SYSCLK_ENABLE))
+$(eval $(call add_define,PRCI_CLK))
+#======================================================================
+
+#======================================================================
+# Bootload Configuration
+#======================================================================
+USE_TIMER	?= 0
+$(eval $(call add_define,USE_TIMER))
+$(eval $(call add_define,BOOTLOADER))
+#======================================================================
diff --git a/src/platform/sifive/qemu-sifive-e-bl/include/plat_defines.h b/src/platform/sifive/qemu-sifive-e-bl/include/plat_defines.h
@@ -0,0 +1,20 @@
+/*
+ * CYANCORE LICENSE
+ * Copyrights (C) 2022, Cyancore Team
+ *
+ * File Name		: plat_mem.h
+ * Description		: This file contains defines corresponding to
+ *			  fe310-g002 board
+ * Primary Author	: Akash Kollipara [akashkollipara@gmail.com]
+ * Organisation		: Cyancore Core-Team
+ */
+
+#pragma once
+
+#define __RISCV_FE310G002__
+
+enum pinmux_functions
+{
+	serial = 0,
+	pwm = 1
+};
diff --git a/src/platform/sifive/qemu-sifive-e-bl/include/plat_mem.h b/src/platform/sifive/qemu-sifive-e-bl/include/plat_mem.h
@@ -0,0 +1,28 @@
+/*
+ * CYANCORE LICENSE
+ * Copyrights (C) 2022, Cyancore Team
+ *
+ * File Name		: plat_mem.h
+ * Description		: This file contains memory config of fe310-g002
+ * Primary Author	: Akash Kollipara [akashkollipara@gmail.com]
+ * Organisation		: Cyancore Core-Team
+ */
+
+#pragma once
+
+#define FLASH_SIZE	8K
+#define RAM_SIZE	16K
+
+#define V_ITMEM_START	0x08000000
+#define V_IMEM_START	0x00001000
+#define V_DMEM_START	0x80000000
+
+#define L_MEM_START	0x00001000
+#define L_MEM_LENGTH	0x00002000
+
+#define ITMEM_LENGTH	0x00002000
+#define IMEM_LENGTH	0x00002000
+#define DMEM_LENGTH	0x00004000
+
+#define ALIGN_BOUND	4
+#define HEAP_ALIGN	ALIGN_BOUND
diff --git a/src/platform/sifive/qemu-sifive-e-bl/platform.c b/src/platform/sifive/qemu-sifive-e-bl/platform.c
@@ -0,0 +1,17 @@
+/*
+ * CYANCORE LICENSE
+ * Copyrights (C) 2022, Cyancore Team
+ *
+ * File Name		: platform.c
+ * Description		: This file contains sources for platform apis
+ * Primary Author	: Akash Kollipara [akashkollipara@gmail.com]
+ * Organisation		: Cyancore Core-Team
+ */
+
+#include <platform.h>
+
+void platform_jump_to_user_code(void)
+{
+	void (*jmp)(void) = (void *) 0x20000000;
+	jmp();
+}
diff --git a/src/platform/sifive/qemu-sifive-e-bl/resources/build.mk b/src/platform/sifive/qemu-sifive-e-bl/resources/build.mk
@@ -0,0 +1,13 @@
+#
+# CYANCORE LICENSE
+# Copyrights (C) 2019, Cyancore Team
+#
+# File Name		: build.mk
+# Description		: This file builds resources sources 
+# Primary Author	: Akash Kollipara [akashkollipara@gmail.com]
+# Organisation		: Cyancore Core-Team
+#
+
+DIR	:= $(GET_PATH)
+
+include mk/obj.mk