1. Virtual platform with OpenRisc 2010/06/08 by Sean Chen

3. Physical platform

6. Virtual platform Using the software platform to model the hardware components Benefits: Fast, build easily, debug quickly …. Effort: Model building (the Model accurately issue) Black Box (c) TDI TDO TMS TCLK TRST JTAG (SystemC) GDB (Client) Wrapper (SystemC) Console (Host)

8. Virtual && Physical Co-Work Virtual platform Physical platform

18. Top Platform Host Test prog

20. UART sample case void except vectors… void syscall_except(){} void dpf_except(){} … Void uart_print_str(char *); Void uart_print_long(unsigned long); Int main(){ uart_init(); uart_print_str(“Hello World.”); report(0xdeaddead); or32_exit(0); } Name: uart_init() //set control register / status register REG8(UART_BASE+UART_IER) = 0x00; … //set baud rate devisor = IN_CLK/(16 * UART_BAUD_RATE); REG8(UART_BASE+UART_LCR) |= UART_LCR_DLAB … . Name : reset() //reset register , status , interrupt , and DMA… Name : main() //pc pointer to main Name : or32_exit()

21. UART sample case 0x000021b0 <main+0>: l.addi r1,r1,-8 0x000021b4 <main+4>: l.sw 4(r1),r2 0x000021b8 <main+8>: l.addi r2,r1,8 0x000021bc <main+12>: l.sw 0(r1),r9 0x000021c0 <main+16>: l.jal <uart_init> 0x000021c4 <main+20>: l.nop 0 0x000021c8 <main+24>: l.movhi r3,0x0 0x000021cc <main+28>: l.ori r3,r3,0x3da4 0x000021d0 <main+32>: l.jal <uart_print_str> 0x000021d4 <main+36>: l.nop 0 0x000021d8 <main+40>: l.movhi r3,0xdead 0x000021dc <main+44>: l.jal <report> 0x000021e0 <main+48>: l.ori r3,r3,0xdead 0x000021e4 <main+52>: l.jal <or32_exit> 0x000021e8 <main+56>: l.addi r3,r0,0 0x000021ec <main+60>: l.lwz r9,0(r1) 0x000021f0 <main+64>: l.lwz r2,4(r1) 0x000021f4 <main+68>: l.jr r9 0x000021f8 <main+72>: l.addi r1,r1,8 store current PI (program pointer) 2 main function Call uart_init