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Add 32-bit support for Gxemul's oldtestmips machine emulation
Original work by: kan@
This commit is contained in:
Oleksandr Tymoshenko
parent
a9e5c5a364
commit
3b15395e04
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=255212
@ -99,18 +99,16 @@ static void gxemul_cons_timeout(void *);
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* XXXRW: Should be using FreeBSD's bus routines here, but they are not
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* available until later in the boot.
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*/
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typedef uint64_t paddr_t;
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typedef uint64_t vaddr_t;
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static inline vaddr_t
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mips_phys_to_uncached(paddr_t phys)
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static inline vm_offset_t
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mips_phys_to_uncached(vm_paddr_t phys)
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{
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return (MIPS_PHYS_TO_DIRECT_UNCACHED(phys));
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}
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static inline uint8_t
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mips_ioread_uint8(vaddr_t vaddr)
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mips_ioread_uint8(vm_offset_t vaddr)
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{
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uint8_t v;
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@ -119,7 +117,7 @@ mips_ioread_uint8(vaddr_t vaddr)
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}
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static inline void
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mips_iowrite_uint8(vaddr_t vaddr, uint8_t v)
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mips_iowrite_uint8(vm_offset_t vaddr, uint8_t v)
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{
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__asm__ __volatile__ ("sb %0, 0(%1)" : : "r" (v), "r" (vaddr));
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@ -214,7 +214,14 @@ gxemul_disk_read(unsigned diskid, void *buf, off_t off)
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if (off < 0 || off % GXEMUL_DISK_DEV_BLOCKSIZE != 0)
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return (EINVAL);
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#ifdef _LP64
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GXEMUL_DISK_DEV_WRITE(GXEMUL_DISK_DEV_OFFSET, (uint64_t)off);
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#else
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GXEMUL_DISK_DEV_WRITE(GXEMUL_DISK_DEV_OFFSET_LO,
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(uint32_t)(off & 0xffffffff));
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GXEMUL_DISK_DEV_WRITE(GXEMUL_DISK_DEV_OFFSET_HI,
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(uint32_t)((off >> 32) & 0xffffffff));
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#endif
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GXEMUL_DISK_DEV_WRITE(GXEMUL_DISK_DEV_DISKID, diskid);
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GXEMUL_DISK_DEV_WRITE(GXEMUL_DISK_DEV_START, GXEMUL_DISK_DEV_START_READ);
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switch (GXEMUL_DISK_DEV_READ(GXEMUL_DISK_DEV_STATUS)) {
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@ -280,7 +287,15 @@ gxemul_disk_write(unsigned diskid, const void *buf, off_t off)
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if (off < 0 || off % GXEMUL_DISK_DEV_BLOCKSIZE != 0)
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return (EINVAL);
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#ifdef _LP64
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GXEMUL_DISK_DEV_WRITE(GXEMUL_DISK_DEV_OFFSET, (uint64_t)off);
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#else
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GXEMUL_DISK_DEV_WRITE(GXEMUL_DISK_DEV_OFFSET_LO,
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(uint32_t)(off & 0xffffffff));
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GXEMUL_DISK_DEV_WRITE(GXEMUL_DISK_DEV_OFFSET_HI,
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(uint32_t)((off >> 32) & 0xffffffff));
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#endif
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GXEMUL_DISK_DEV_WRITE(GXEMUL_DISK_DEV_DISKID, diskid);
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dst = GXEMUL_DISK_DEV_FUNCTION(GXEMUL_DISK_DEV_BLOCK);
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@ -36,16 +36,28 @@
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#define GXEMUL_DISK_DEV_ID_START (0x0000)
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#define GXEMUL_DISK_DEV_ID_END (0x0100)
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#define GXEMUL_DISK_DEV_OFFSET (0x0000)
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#ifdef _LP64
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#define GXEMUL_DISK_DEV_OFFSET (0x0000)
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#else
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#define GXEMUL_DISK_DEV_OFFSET_LO (0x0000)
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#define GXEMUL_DISK_DEV_OFFSET_HI (0x0008)
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#endif
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#define GXEMUL_DISK_DEV_DISKID (0x0010)
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#define GXEMUL_DISK_DEV_START (0x0020)
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#define GXEMUL_DISK_DEV_STATUS (0x0030)
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#define GXEMUL_DISK_DEV_BLOCK (0x4000)
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#ifdef _LP64
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#define GXEMUL_DISK_DEV_FUNCTION(f) \
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(volatile uint64_t *)MIPS_PHYS_TO_DIRECT_UNCACHED(GXEMUL_DISK_DEV_BASE + (f))
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#define GXEMUL_DISK_DEV_READ(f) \
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(volatile uint64_t)*GXEMUL_DISK_DEV_FUNCTION(f)
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#else
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#define GXEMUL_DISK_DEV_FUNCTION(f) \
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(volatile uint32_t *)MIPS_PHYS_TO_DIRECT_UNCACHED(GXEMUL_DISK_DEV_BASE + (f))
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#define GXEMUL_DISK_DEV_READ(f) \
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(volatile uint32_t)*GXEMUL_DISK_DEV_FUNCTION(f)
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#endif
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#define GXEMUL_DISK_DEV_WRITE(f, v) \
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*GXEMUL_DISK_DEV_FUNCTION(f) = (v)
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@ -40,10 +40,17 @@
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#define GXEMUL_ETHER_DEV_COMMAND (0x4020)
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#define GXEMUL_ETHER_DEV_MAC (0x4040)
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#ifdef _LP64
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#define GXEMUL_ETHER_DEV_FUNCTION(f) \
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(volatile uint64_t *)MIPS_PHYS_TO_DIRECT_UNCACHED(GXEMUL_ETHER_DEV_BASE + (f))
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#define GXEMUL_ETHER_DEV_READ(f) \
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(volatile uint64_t)*GXEMUL_ETHER_DEV_FUNCTION(f)
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#else
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#define GXEMUL_ETHER_DEV_FUNCTION(f) \
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(volatile uint32_t *)MIPS_PHYS_TO_DIRECT_UNCACHED(GXEMUL_ETHER_DEV_BASE + (f))
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#define GXEMUL_ETHER_DEV_READ(f) \
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(volatile uint32_t)*GXEMUL_ETHER_DEV_FUNCTION(f)
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#endif
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#define GXEMUL_ETHER_DEV_WRITE(f, v) \
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*GXEMUL_ETHER_DEV_FUNCTION(f) = (v)
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61
sys/mips/conf/GXEMUL32
Normal file
61
sys/mips/conf/GXEMUL32
Normal file
@ -0,0 +1,61 @@
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#
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# GXEMUL "oldtestmips" sample kernel configuration.
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#
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# $FreeBSD$
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#
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ident GXEMUL
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machine mips mips
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cpu CPU_MIPS4KC
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options HZ=100
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makeoptions KERNLOADADDR=0x80100000
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include "../gxemul/std.gxemul"
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hints "GXEMUL.hints" #Default places to look for devices.
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makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
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makeoptions MODULES_OVERRIDE=""
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options DDB
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options KDB
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# Make an SMP-capable kernel by default
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options SMP # Symmetric MultiProcessor Kernel
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options SCHED_ULE
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options INET # InterNETworking
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options INET6 # IPv6 communications protocols
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options FFS #Berkeley Fast Filesystem
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# Debugging for use in -current
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#options DEADLKRES #Enable the deadlock resolver
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options INVARIANTS #Enable calls of extra sanity checking
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options INVARIANT_SUPPORT #Extra sanity checks of internal structures, required by INVARIANTS
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#options WITNESS #Enable checks to detect deadlocks and cycles
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#options WITNESS_SKIPSPIN #Don't run witness on spinlocks for speed
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options ROOTDEVNAME=\"ufs:gxemul_disk0\"
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device gxemul_cons
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device gxemul_disk
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device gxemul_ether
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# Pseudo devices.
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device loop # Network loopback
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device random # Entropy device
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device ether # Ethernet support
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device tun # Packet tunnel.
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device md # Memory "disks"
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device gif # IPv6 and IPv4 tunneling
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device faith # IPv6-to-IPv4 relaying (translation)
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# The `bpf' device enables the Berkeley Packet Filter.
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# Be aware of the administrative consequences of enabling this!
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# Note that 'bpf' is required for DHCP.
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device bpf # Berkeley packet filter
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@ -43,10 +43,17 @@
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#define GXEMUL_MP_DEV_IPI_READ 0x00c0
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#define GXEMUL_MP_DEV_CYCLES 0x00d0
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#ifdef _LP64
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#define GXEMUL_MP_DEV_FUNCTION(f) \
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(volatile uint64_t *)MIPS_PHYS_TO_DIRECT_UNCACHED(GXEMUL_MP_DEV_BASE + (f))
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#define GXEMUL_MP_DEV_READ(f) \
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(volatile uint64_t)*GXEMUL_MP_DEV_FUNCTION(f)
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#else
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#define GXEMUL_MP_DEV_FUNCTION(f) \
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(volatile uint32_t *)MIPS_PHYS_TO_DIRECT_UNCACHED(GXEMUL_MP_DEV_BASE + (f))
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#define GXEMUL_MP_DEV_READ(f) \
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(volatile uint32_t)*GXEMUL_MP_DEV_FUNCTION(f)
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#endif
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#define GXEMUL_MP_DEV_WRITE(f, v) \
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*GXEMUL_MP_DEV_FUNCTION(f) = (v)
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