diff options
Diffstat (limited to 'code/fe310')
| -rw-r--r-- | code/fe310/eos/Makefile | 2 | ||||
| -rw-r--r-- | code/fe310/eos/trap_entry.S | 393 |
2 files changed, 1 insertions, 394 deletions
diff --git a/code/fe310/eos/Makefile b/code/fe310/eos/Makefile index f097327..a3fb640 100644 --- a/code/fe310/eos/Makefile +++ b/code/fe310/eos/Makefile @@ -5,7 +5,7 @@ FE310_HOME = /opt/my/freedom-e-sdk CC = $(FE310_HOME)/work/build/riscv-gnu-toolchain/riscv64-unknown-elf/prefix/bin/riscv64-unknown-elf-gcc AR = $(FE310_HOME)/work/build/riscv-gnu-toolchain/riscv64-unknown-elf/prefix/bin/riscv64-unknown-elf-ar -CFLAGS = $(CFLAGS_PL) -I../.. # -DEOS_WITH_SPI_ASM +CFLAGS = $(CFLAGS_PL) -I../.. obj = trap_entry.o eos.o msgq.o event.o interrupt.o timer.o i2s.o net.o ecp.o diff --git a/code/fe310/eos/trap_entry.S b/code/fe310/eos/trap_entry.S index 1908327..26e93cb 100644 --- a/code/fe310/eos/trap_entry.S +++ b/code/fe310/eos/trap_entry.S @@ -69,14 +69,6 @@ eos_trap_entry: beq x9, x18, i2s_handler_ws li x18, I2S_IRQ_SD_ID beq x9, x18, i2s_handler_sd -#ifdef EOS_WITH_SPI_ASM - li x18, INT_SPI1_BASE - beq x9, x18, spi_handler_xchg - li x18, INT_GPIO_BASE + SPI_PIN_CTS - beq x9, x18, spi_handler_cts - li x18, INT_GPIO_BASE + SPI_PIN_RTS - beq x9, x18, spi_handler_rts -#endif j handler evtq_push: @@ -374,391 +366,6 @@ eos_flash_set: sw a0, SPI_REG_FCTRL(a3) ret -#ifdef EOS_WITH_SPI_ASM - -# x9 - cmd, x18 - buffer, x19 - len, x20 - &flags, x21 - flags -spi_xchg_start: - ori x21, x21, SPI_FLAG_INIT - andi x21, x21, ~SPI_FLAG_CTS - la x22, _eos_spi_state_next_cnt - lbu x23, 0(x22) - beqz x23, 1f - la x22, _eos_spi_state_next_buf - lw x23, 0(x22) - bnez x23, 1f - ori x9, x9, EOS_NET_CMD_FLAG_ONEW - -1: - andi x22, x9, EOS_NET_CMD_FLAG_ONEW - beqz x22, 2f - ori x21, x21, SPI_FLAG_ONEW -2: - sw x21, 0(x20) - - la x20, _eos_spi_state_cmd - sb x9, 0(x20) - la x20, _eos_spi_state_buf - sw x18, 0(x20) - la x20, _eos_spi_state_len_tx - sw x19, 0(x20) - la x20, _eos_spi_state_len_rx - sw x0, 0(x20) - la x20, _eos_spi_state_idx_tx - sw x0, 0(x20) - la x20, _eos_spi_state_idx_rx - sw x0, 0(x20) - - li x20, SPI1_CTRL_ADDR - li x21, SPI_CSMODE_HOLD - sw x21, SPI_REG_CSMODE(x20) - - slli x21, x9, 3 - srli x22, x19, 8 - or x21, x21, x22 - andi x21, x21, 0xff - sw x21, SPI_REG_TXFIFO(x20) - - andi x21, x19, 0xff - sw x21, SPI_REG_TXFIFO(x20) - - li x21, 1 - sw x21, SPI_REG_RXCTRL(x20) - li x21, SPI_IP_RXWM - sw x21, SPI_REG_IE(x20) - jalr x0, x8 - -spi_handler_xchg: - li x19, SPI1_CTRL_ADDR - la x18, _eos_spi_state_flags - lbu x20, 0(x18) - andi x8, x20, SPI_FLAG_RST - beqz x8, 0f - - andi x20, x20, ~SPI_FLAG_RST - sb x20, 0(x18) - lw x0, SPI_REG_RXFIFO(x19) - li x8, SPI_CSMODE_AUTO - sw x8, SPI_REG_CSMODE(x19) - sw x0, SPI_REG_IE(x19) - j spi_handler_xchg_exit - -0: - andi x8, x20, SPI_FLAG_INIT - beqz x8, 6f - - andi x20, x20, ~SPI_FLAG_INIT - sb x20, 0(x18) - li x8, SPI_SIZE_WM - sw x8, SPI_REG_TXCTRL(x19) - li x8, SPI_IP_TXWM - sw x8, SPI_REG_IE(x19) - lw x8, SPI_REG_RXFIFO(x19) - lw x9, SPI_REG_RXFIFO(x19) - andi x8, x8, 0xff - andi x9, x9, 0xff - la x18, _eos_spi_state_cmd - lbu x23, 0(x18) - andi x23, x23, EOS_NET_CMD_FLAG_ONEW - beqz x23, 1f - mv x8, x0 - mv x9, x0 -1: - srli x23, x8, 3 - sb x23, 0(x18) - andi x22, x8, 0x07 - slli x22, x22, 8 - or x22, x22, x9 - la x18, _eos_spi_state_len_rx - sw x22, 0(x18) - la x18, _eos_spi_state_len_tx - lw x21, 0(x18) - bgeu x21, x22, 2f - mv x21, x22 - -2: - li x8, 6 - bgeu x21, x8, 3f - mv x21, x8 - j 4f -3: - addi x8, x21, 2 - li x9, 4 - remu x18, x8, x9 - beqz x18, 4f - divu x21, x8, x9 - addi x21, x21, 1 - mul x21, x21, x9 - addi x21, x21, -2 - -4: - li x8, SPI_SIZE_BUF + 1 - bltu x21, x8, 5f - li x8, SPI_CSMODE_AUTO - sw x8, SPI_REG_CSMODE(x19) - sw x0, SPI_REG_IE(x19) - - j spi_handler_xchg_exit - -5: - la x18, _eos_spi_state_len - sw x21, 0(x18) - j spi_handler_xchg_exit - -6: - la x18, _eos_spi_state_len - lw x20, 0(x18) - la x18, _eos_spi_state_idx_tx - lw x21, 0(x18) - la x18, _eos_spi_state_idx_rx - lw x22, 0(x18) - la x18, _eos_spi_state_buf - lw x23, 0(x18) - - sub x9, x20, x21 - li x8, SPI_SIZE_CHUNK - bltu x8, x9, 7f - mv x8, x9 -7: - addi x8, x8, -1 - add x9, x23, x21 - -8: - bltz x8, 9f - lw x18, SPI_REG_TXFIFO(x19) - bltz x18, 9f - lbu x18, 0(x9) - sw x18, SPI_REG_TXFIFO(x19) - addi x8, x8, -1 - addi x9, x9, 1 - addi x21, x21, 1 - j 8b - -9: - sub x8, x21, x22 - addi x8, x8, -1 - add x9, x23, x22 - -10: - bltz x8, 11f - lw x18, SPI_REG_RXFIFO(x19) - bltz x18, 11f - sb x18, 0(x9) - addi x8, x8, -1 - addi x9, x9, 1 - addi x22, x22, 1 - j 10b - -11: - la x18, _eos_spi_state_idx_tx - sw x21, 0(x18) - la x18, _eos_spi_state_idx_rx - sw x22, 0(x18) - - bne x22, x20, 15f - li x8, SPI_CSMODE_AUTO - sw x8, SPI_REG_CSMODE(x19) - sw x0, SPI_REG_IE(x19) - la x18, _eos_spi_state_cmd - lbu x21, 0(x18) - beqz x21, 12f - - # push to event queue - jal x20, evtq_push - beqz x8, 14f - ori x21, x21, EOS_EVT_NET - sb x21, MSGQ_ITEM_OFF_CMD(x8) - sw x23, MSGQ_ITEM_OFF_BUF(x8) - la x18, _eos_spi_state_len_rx - lw x22, 0(x18) - sh x22, MSGQ_ITEM_OFF_SIZE(x8) - j spi_handler_xchg_exit - -12: - la x18, _eos_spi_state_flags - lbu x8, 0(x18) - andi x19, x8, SPI_FLAG_ONEW - bnez x19, 13f - la x19, _eos_spi_state_next_cnt - lbu x9, 0(x19) - beqz x9, 14f -13: - la x19, _eos_spi_state_next_buf - lw x9, 0(x19) - bnez x9, 14f - andi x8, x8, ~SPI_FLAG_ONEW - sb x8, 0(x18) - sw x23, 0(x19) - - j spi_handler_xchg_exit - -14: - # push to spi buf queue - la x19, _eos_spi_buf_q - lbu x8, SPI_BUFQ_OFF_IDXW(x19) - - andi x9, x8, SPI_SIZE_BUFQ - 1 - slli x9, x9, 2 - add x9, x19, x9 - sw x23, SPI_BUFQ_OFF_ARRAY(x9) - - addi x8, x8, 1 - sb x8, SPI_BUFQ_OFF_IDXW(x19) - - j spi_handler_xchg_exit - -15: - bne x21, x20, spi_handler_xchg_exit - sub x8, x20, x22 - addi x8, x8, -1 - li x9, SPI_SIZE_WM - 1 - bltu x8, x9, 16f - mv x8, x9 -16: - sw x8, SPI_REG_RXCTRL(x19) - li x9, SPI_IP_RXWM - sw x9, SPI_REG_IE(x19) - -spi_handler_xchg_exit: - # complete - li x18, INT_SPI1_BASE - li x19, PLIC_CLAIM - sw x18, 0(x19) - - # exit - j trap_exit_data - -spi_handler_cts: - li x8, 1 - slli x8, x8, SPI_PIN_CTS - li x19, GPIO_CTRL_ADDR - sw x8, GPIO_RISE_IP(x19) - - la x20, _eos_spi_state_flags - lbu x21, 0(x20) - ori x21, x21, SPI_FLAG_CTS - sb x21, 0(x20) - andi x9, x21, SPI_FLAG_RDY - beqz x9, 2f - - # pop from send q - la x9, _eos_spi_send_q - lbu x18, MSGQ_OFF_IDXR(x9) - lbu x19, MSGQ_OFF_IDXW(x9) - beq x18, x19, 1f - lbu x8, MSGQ_OFF_SIZE(x9) - - addi x8, x8, -1 - and x8, x8, x18 - li x19, MSGQ_ITEM_SIZE - mul x8, x8, x19 - lw x19, MSGQ_OFF_ARRAY(x9) - add x8, x19, x8 - addi x18, x18, 1 - sb x18, MSGQ_OFF_IDXR(x9) - - lbu x9, MSGQ_ITEM_OFF_CMD(x8) - lw x18, MSGQ_ITEM_OFF_BUF(x8) - lhu x19, MSGQ_ITEM_OFF_SIZE(x8) - beqz x18, 1f - jal x8, spi_xchg_start - - j spi_handler_cts_exit - -1: - andi x9, x21, SPI_FLAG_RTS - beqz x9, spi_handler_cts_exit - - # pop from spi buf queue - la x9, _eos_spi_buf_q - lbu x18, SPI_BUFQ_OFF_IDXR(x9) - lbu x19, SPI_BUFQ_OFF_IDXW(x9) - beq x18, x19, spi_handler_cts_exit - - andi x8, x18, SPI_SIZE_BUFQ - 1 - slli x8, x8, 2 - add x8, x9, x8 - addi x18, x18, 1 - sb x18, SPI_BUFQ_OFF_IDXR(x9) - mv x9, x0 - lw x18, SPI_BUFQ_OFF_ARRAY(x8) - mv x19, x0 - beqz x18, spi_handler_cts_exit - jal x8, spi_xchg_start - - j spi_handler_cts_exit - -2: - lw x8, GPIO_IOF_EN(x19) - li x9, 1 - slli x9, x9, SPI_PIN_CS - not x9, x9 - and x8, x8, x9 - sw x8, GPIO_IOF_EN(x19) - -spi_handler_cts_exit: - # complete - li x18, INT_GPIO_BASE + SPI_PIN_CTS - li x19, PLIC_CLAIM - sw x18, 0(x19) - - # exit - j trap_exit_data - -spi_handler_rts: - li x8, 1 - slli x8, x8, SPI_PIN_RTS - li x18, GPIO_CTRL_ADDR - la x19, _eos_spi_state_flags - - lw x9, GPIO_RISE_IP(x18) - and x9, x9, x8 - beqz x9, 1f - - sw x8, GPIO_RISE_IP(x18) - lbu x8, 0(x19) - ori x8, x8, SPI_FLAG_RTS - sb x8, 0(x19) - - andi x9, x8, SPI_FLAG_RDY - beqz x9, spi_handler_rts_exit - andi x9, x8, SPI_FLAG_CTS - beqz x9, spi_handler_rts_exit - - andi x8, x8, ~SPI_FLAG_CTS - ori x8, x8, SPI_FLAG_RST - sb x8, 0(x19) - - li x19, SPI1_CTRL_ADDR - li x8, SPI_CSMODE_HOLD - sw x8, SPI_REG_CSMODE(x19) - sw x0, SPI_REG_TXFIFO(x19) - sw x0, SPI_REG_RXCTRL(x19) - li x8, SPI_IP_RXWM - sw x8, SPI_REG_IE(x19) - - j spi_handler_rts_exit - -1: - lw x9, GPIO_FALL_IP(x18) - and x9, x9, x8 - beqz x9, spi_handler_rts_exit - - sw x8, GPIO_FALL_IP(x18) - lbu x8, 0(x19) - andi x8, x8, ~SPI_FLAG_RTS - sb x8, 0(x19) - -spi_handler_rts_exit: - # complete - li x18, INT_GPIO_BASE + SPI_PIN_RTS - li x19, PLIC_CLAIM - sw x18, 0(x19) - - # exit - j trap_exit_data - -#endif /* EOS_WITH_SPI_ASM */ - trap_exit_data: # Remain in M-mode after mret li x18, MSTATUS_MPP |