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fw: Replace custom picorv32 instructions when building for qemu

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Mikael Ågren 2025-03-13 15:33:20 +01:00
parent 49c06d78d1
commit c5c6230664
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3 changed files with 22 additions and 0 deletions
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3
hw/application_fpga/Makefile
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@ -204,6 +204,9 @@ simfirmware.elf: $(FIRMWARE_OBJS) $(P)/fw/tk1/firmware.lds
$(CC) $(CFLAGS) $(FIRMWARE_OBJS) $(LDFLAGS) -o $@ > $(basename $@).map
qemu_firmware.elf: CFLAGS += -DQEMU_DEBUG
qemu_firmware.elf: ASFLAGS += -DQEMU_DEBUG
qemu_firmware.elf: CFLAGS += -DQEMU_SYSCALL
qemu_firmware.elf: ASFLAGS += -DQEMU_SYSCALL
qemu_firmware.elf: firmware.elf
mv firmware.elf qemu_firmware.elf

11
hw/application_fpga/fw/tk1/start.S
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@ -4,8 +4,19 @@
*/
#include <tkey/tk1_mem.h>
#ifdef QEMU_SYSCALL
#define picorv32_retirq_insn(...) \
mv ra, x3; \
ret
#else
#include "picorv32/custom_ops.S" // PicoRV32 custom instructions
#endif
#define illegal_insn() .word 0
// Variables in bss

8
hw/application_fpga/fw/tk1/syscall_enable.S
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@ -1,5 +1,13 @@
#ifdef QEMU_SYSCALL
#define picorv32_maskirq_insn(...)
#else
#include "../tk1/picorv32/custom_ops.S"
#endif
.section ".text"
.globl syscall_enable