Last change
on this file since 251 was
232,
checked in by alain, 12 years ago
|
Introducing the elementary tests for a TSAR mono-cluster
mono-processor platform with MMU using the vci_cc_vcache_v4
such as the "tsarv4_mono_mmu".
(assemby level tests written by Manuel Bouyer)
|
File size:
1.6 KB
|
Rev | Line | |
---|
[232] | 1 | /* |
---|
| 2 | * Check that we can mask an external interrupt |
---|
| 3 | */ |
---|
| 4 | #include <registers.h> |
---|
| 5 | #include <misc.h> |
---|
| 6 | #include <xicu.h> |
---|
| 7 | |
---|
| 8 | .text |
---|
| 9 | .globl _start |
---|
| 10 | _start: |
---|
| 11 | .set noreorder |
---|
| 12 | la k0, TTY_BASE |
---|
| 13 | la k1, EXIT_BASE |
---|
| 14 | |
---|
| 15 | /* reset cop0 status (keep BEV), enable interrupt 0 */ |
---|
| 16 | lui a0, 0x0040; |
---|
| 17 | ori a0, 0xc801; |
---|
| 18 | mtc0 a0, COP0_STATUS |
---|
| 19 | |
---|
| 20 | /* reset cause, make sure IV is off */ |
---|
| 21 | mtc0 zero, COP0_CAUSE |
---|
| 22 | |
---|
| 23 | PRINT(startstr) |
---|
| 24 | |
---|
| 25 | /* program xicu */ |
---|
| 26 | la t0, XICU_BASE |
---|
| 27 | /* clear pending interrupt */ |
---|
| 28 | lw a0, XICU_PTI_ACK(0)(t0) |
---|
| 29 | /* route PTI0 to irq 0 */ |
---|
| 30 | li a0, 1 << 0 |
---|
| 31 | sw a0, XICU_MSK_PTI_E(0)(t0) |
---|
| 32 | /* interrupt in 10 cycles */ |
---|
| 33 | li a0, 10 |
---|
| 34 | sw a0, XICU_PTI_PER(0)(t0) |
---|
| 35 | /* interrupts still disabled at the MIPS level */ |
---|
| 36 | li a0, MAGIC1 |
---|
| 37 | PRINTX |
---|
| 38 | PUTCHAR('\n') |
---|
| 39 | nop |
---|
| 40 | nop |
---|
| 41 | nop |
---|
| 42 | nop |
---|
| 43 | nop |
---|
| 44 | nop |
---|
| 45 | nop |
---|
| 46 | nop |
---|
| 47 | nop |
---|
| 48 | nop |
---|
| 49 | /* enable interrupt from timer0 */ |
---|
| 50 | mfc0 a0, COP0_STATUS |
---|
| 51 | ori a0, 0x0400 |
---|
| 52 | mtc0 a0, COP0_STATUS |
---|
| 53 | |
---|
| 54 | nop |
---|
| 55 | nop |
---|
| 56 | |
---|
| 57 | 1: j 1b |
---|
| 58 | nop |
---|
| 59 | /* we should not end there */ |
---|
| 60 | EXIT(1) |
---|
| 61 | |
---|
| 62 | .globl excep |
---|
| 63 | excep: |
---|
| 64 | .set noreorder |
---|
| 65 | PRINT(statusstr) |
---|
| 66 | mfc0 a0, COP0_STATUS |
---|
| 67 | PRINTX |
---|
| 68 | |
---|
| 69 | PRINT(causestr) |
---|
| 70 | mfc0 a0, COP0_CAUSE |
---|
| 71 | PRINTX |
---|
| 72 | |
---|
| 73 | PRINT(pcstr) |
---|
| 74 | mfc0 a0, COP0_EXPC |
---|
| 75 | PRINTX |
---|
| 76 | |
---|
| 77 | PRINT(badvastr) |
---|
| 78 | mfc0 a0, COP_0_BADVADDR |
---|
| 79 | PRINTX |
---|
| 80 | |
---|
| 81 | PRINT(xicustr) |
---|
| 82 | la t0, XICU_BASE |
---|
| 83 | lw a0, XICU_PRIO(0)(t0) |
---|
| 84 | PRINTX |
---|
| 85 | |
---|
| 86 | PUTCHAR('\n') |
---|
| 87 | /* clear interrupt */ |
---|
| 88 | mfc0 a0, COP0_CAUSE |
---|
| 89 | andi t0, a0, 0xff00 |
---|
| 90 | xor a0, a0, t0 |
---|
| 91 | mtc0 a0, COP0_CAUSE |
---|
| 92 | /* we should end there */ |
---|
| 93 | EXIT(0) |
---|
| 94 | |
---|
| 95 | .rodata: |
---|
| 96 | statusstr: .ascii "status \0" |
---|
| 97 | causestr: .ascii " cause \0" |
---|
| 98 | pcstr: .ascii " pc \0" |
---|
| 99 | badvastr: .ascii " badva \0" |
---|
| 100 | xicustr: .ascii " xicu \0" |
---|
| 101 | startstr: .ascii "start\n\0" |
---|
| 102 | eretstr: .ascii "eret\n\0" |
---|
| 103 | |
---|
| 104 | .org EXCEP_ADDRESS - BOOT_ADDRESS |
---|
| 105 | .globl evect |
---|
| 106 | evect: |
---|
| 107 | j excep |
---|
| 108 | nop |
---|
| 109 | .data |
---|
| 110 | myvar: .word 0 |
---|
Note: See
TracBrowser
for help on using the repository browser.