You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
143 lines
3.1 KiB
143 lines
3.1 KiB
8 years ago
|
/*smh : pcitlb.S
|
||
|
|
used to map address accessing for kuseg to address accessing for system memory beyond low 256M memory
|
||
|
|
used to map address accessing for kseg2 to address accessing for pci memory which are from 0x40000000
|
||
|
|
*/
|
||
|
|
|
||
|
|
/***********************************************************************************************************/
|
||
|
|
/**************************************** MAP KSEG2 ********************************************************/
|
||
|
|
/** MAP virtual address: 0xc0000000~ 0xffffffff to physical address: 0x40000000~ 0x7fffffff for PCI-MEM **/
|
||
|
|
/***********************************************************************************************************/
|
||
|
|
|
||
|
|
li t0, 0x20000000
|
||
|
|
|
||
|
|
.set mips64
|
||
|
|
mfc0 t1, COP_0_TLB_PG_MASK, 1
|
||
|
|
or t1, t1, t0
|
||
|
|
mtc0 t1, COP_0_TLB_PG_MASK, 1
|
||
|
|
|
||
|
|
dmfc0 t0, COP_0_CONFIG, 3
|
||
|
|
ori t0, t0, 0x80
|
||
|
|
dmtc0 t0, COP_0_CONFIG, 3
|
||
|
|
.set mips3
|
||
|
|
|
||
|
|
li t0, 0x01ffe000
|
||
|
|
mtc0 t0, COP_0_TLB_PG_MASK # 16MB page
|
||
|
|
|
||
|
|
li t0, 31
|
||
|
|
|
||
|
|
li t3, 0xc0000000 # entry_hi
|
||
|
|
#dli t4, (0x00000e0040000000 >> 6)|0x17 # entry_lo, uncached, valid, dirty, global
|
||
|
|
#li t4, 0x0e004000
|
||
|
|
|
||
|
|
li t4, 0x00004000
|
||
|
|
#li t4, 0x0efdf000
|
||
|
|
|
||
|
|
.set mips64
|
||
|
|
dsll t4, t4, 10
|
||
|
|
.set mips3
|
||
|
|
ori t4, t4, 0x17
|
||
|
|
|
||
|
|
li t5, (0x1000000>>6) # 16M stride
|
||
|
|
li t6, 0x2000000 # VPN2 32M stride
|
||
|
|
|
||
|
|
.set mips64
|
||
|
|
1:
|
||
|
|
dmtc0 t3, COP_0_TLB_HI
|
||
|
|
daddu t3, t3, t6
|
||
|
|
|
||
|
|
dmtc0 t4, COP_0_TLB_LO0
|
||
|
|
daddu t4, t4, t5
|
||
|
|
dmtc0 t4, COP_0_TLB_LO1
|
||
|
|
daddu t4, t4, t5
|
||
|
|
|
||
|
|
.set mips3
|
||
|
|
|
||
|
|
mtc0 t0, COP_0_TLB_INDEX # 16MB page
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
tlbwi # random++
|
||
|
|
|
||
|
|
bgez t0, 1b
|
||
|
|
addiu t0, t0, -1
|
||
|
|
|
||
|
|
|
||
|
|
li t0, 32
|
||
|
|
mtc0 t0, COP_0_TLB_WIRED # 16MB page
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/***********************************************************************************************************/
|
||
|
|
/**************************************** MAP KUSEG ********************************************************/
|
||
|
|
/** MAP virtual address: 0x40000000~ 0x7fffffff to physical address: 0x80000000~ 0xbfffffff for SYS-MEM **/
|
||
|
|
/***********************************************************************************************************/
|
||
|
|
|
||
|
|
#ifdef CONFIG_GFXUMA /* for UMA mode. */
|
||
|
|
|
||
|
|
li t0, 0x80000000
|
||
|
|
|
||
|
|
.set mips64
|
||
|
|
dmfc0 t1, COP_0_TLB_PG_MASK, 1
|
||
|
|
or t1, t1, t0
|
||
|
|
dmtc0 t1, COP_0_TLB_PG_MASK, 1
|
||
|
|
|
||
|
|
dmfc0 t0, COP_0_CONFIG, 3
|
||
|
|
ori t0, t0, 0x80
|
||
|
|
dmtc0 t0, COP_0_CONFIG, 3
|
||
|
|
.set mips3
|
||
|
|
|
||
|
|
li t0, 0x01ffe000
|
||
|
|
mtc0 t0, COP_0_TLB_PG_MASK # 16MB page
|
||
|
|
|
||
|
|
li t0, 63
|
||
|
|
|
||
|
|
li t3, 0x40000000 # entry_hi
|
||
|
|
#dli t4, (0x00000e0040000000 >> 6)|0x17 # entry_lo, uncached, valid, dirty, global
|
||
|
|
#li t4, 0x0e004000
|
||
|
|
|
||
|
|
li t4, 0x00008000
|
||
|
|
|
||
|
|
#li t4, 0x0efdf000
|
||
|
|
|
||
|
|
.set mips64
|
||
|
|
dsll t4, t4, 10
|
||
|
|
.set mips3
|
||
|
|
ori t4, t4, 0x17
|
||
|
|
|
||
|
|
li t5, (0x1000000>>6) # 16M stride
|
||
|
|
li t6, 0x2000000 # VPN2 32M stride
|
||
|
|
|
||
|
|
.set mips64
|
||
|
|
li t7, 32
|
||
|
|
1:
|
||
|
|
dmtc0 t3, COP_0_TLB_HI
|
||
|
|
daddu t3, t3, t6
|
||
|
|
|
||
|
|
dmtc0 t4, COP_0_TLB_LO0
|
||
|
|
daddu t4, t4, t5
|
||
|
|
dmtc0 t4, COP_0_TLB_LO1
|
||
|
|
daddu t4, t4, t5
|
||
|
|
|
||
|
|
.set mips3
|
||
|
|
|
||
|
|
mtc0 t0, COP_0_TLB_INDEX # 16MB page
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
nop
|
||
|
|
tlbwi # random++
|
||
|
|
|
||
|
|
#bnez t0, 1b
|
||
|
|
addiu t0, t0, -1
|
||
|
|
bge t0, t7, 1b
|
||
|
|
nop
|
||
|
|
|
||
|
|
|
||
|
|
li t0, 64
|
||
|
|
mtc0 t0, COP_0_TLB_WIRED # 16MB page
|
||
|
|
|
||
|
|
#endif
|