| 0,0 → 1,37 |
|---|
| SPARTAN kernel currently supports emulated MIPS R4000 32-bit |
| little-endian architecture. In other words, it can only run in MIPS |
| R4000 emulator called msim. This emulator is being developed by Viliam |
| Holub: |
| |
| http://nenya.ms.mff.cuni.cz/~holub/msim |
| |
| Note that msim diverges from real MIPS hardware in some aspects. |
| Therefore, some non-trivial changes will be necessary for a real |
| hardware port. The simulator is described in this manual: |
| |
| http://nenya.ms.mff.cuni.cz/~holub/msim/msim.ps |
| |
| You'll need a msim.conf script like this: |
| |
| # |
| # MSIM configuration script |
| # |
| |
| add dcpu mips1 |
| |
| add rwm mainmem 0 16M load "kernel.bin" |
| add rom startmem 0x1fc00000 1k load "load.bin" |
| |
| add dprinter printer 0xA000000 |
| |
| |
| |
| BOOTSTRAP |
| ========= |
| Because the mips port uses binary executable format and for some other |
| architectural reasons, it shares one address for bootstrap entry |
| (address where control is passed from loader) and for TLB refill |
| exception entry. The former is used only once during system bootstrap. |
| From that point further, only TLB refill exception entry uses that |
| address. Note that this is the reason why main_bsp() is called from |
| tlb_refill() code. |