diff options
Diffstat (limited to 'bsps/arm/edb7312/irq/bsp_irq_asm.S')
| -rw-r--r-- | bsps/arm/edb7312/irq/bsp_irq_asm.S | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/bsps/arm/edb7312/irq/bsp_irq_asm.S b/bsps/arm/edb7312/irq/bsp_irq_asm.S new file mode 100644 index 0000000000..c48466967b --- /dev/null +++ b/bsps/arm/edb7312/irq/bsp_irq_asm.S @@ -0,0 +1,323 @@ +/* + * Cirrus EP7312 Intererrupt handler + */ + +/* + * Copyright (c) 2002 by Jay Monkman <jtm@smoothsmoothie.com> + * + * Copyright (c) 2002 by Charlie Steader <charlies@poliac.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. +*/ + +#define __asm__ +#include <bsp.h> +#include <bsp/irq.h> + + .extern edb7312_interrupt_dispatch + +/* + * Function to obtain, execute an IT handler and acknowledge the IT + */ + + .globl bsp_interrupt_dispatch +bsp_interrupt_dispatch : +/* + * Look at interrupt status register to determine source. + * From source, determine offset into expanded vector table + * and load handler address into r0. + */ + + ldr r1, =0x80000000 /* close to interrupt status/mask registers 1 */ + ldr r2, =0x80001000 /* close to interrupt status/mask registers 2 */ + ldr r3, =0x80002000 /* close to interrupt status/mask registers 3 */ + + stmdb sp!,{r4, r5, r6} + +/* + * INTSR3 + */ +check_dai: + ldr r4, [r3, #0x240] + ldr r5, [r3, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ + tst r6, #0x0001 + beq check_extfiq + mov r0, #BSP_DAIINT + b get_handler + +/* + * INTSR1 + */ +check_extfiq: + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ + tst r6, #0x0001 + beq check_bl + mov r0, #BSP_EXTFIQ + b get_handler + +check_bl: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0002 + beq check_we + mov r0, #BSP_BLINT + b get_handler + +check_we: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0004 + beq check_mc + mov r0, #BSP_WEINT + b get_handler + +check_mc: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0008 + beq check_cs + mov r0, #BSP_MCINT + b get_handler + +check_cs: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0010 + beq check_e1 + mov r0, #BSP_CSINT + b get_handler + +check_e1: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0020 + beq check_e2 + mov r0, #BSP_EINT1 + b get_handler + +check_e2: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0040 + beq check_e3 + mov r0, #BSP_EINT2 + b get_handler + +check_e3: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0080 + beq check_tc1 + mov r0, #BSP_EINT3 + b get_handler + +check_tc1: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0100 + beq check_tc2 + mov r0, #BSP_TC1OI + b get_handler + +check_tc2: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0200 + beq check_rtc + mov r0, #BSP_TC2OI + b get_handler + +check_rtc: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0400 + beq check_tick + mov r0, #BSP_RTCMI + b get_handler + +check_tick: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0800 + beq check_utx1 + mov r0, #BSP_TINT + b get_handler + +check_utx1: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x1000 + beq check_urx1 + mov r0, #BSP_UTXINT1 + b get_handler + +check_urx1: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x2000 + beq check_ums + mov r0, #BSP_URXINT1 + b get_handler + +check_ums: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x4000 + beq check_sse + mov r0, #BSP_UMSINT + b get_handler + +check_sse: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r1, #0x240] + ldr r5, [r1, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x8000 + beq check_kbd + mov r0, #BSP_SSEOTI + b get_handler + +/* + * INTSR2 + */ +check_kbd: + ldr r4, [r2, #0x240] + ldr r5, [r2, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ + tst r6, #0x0001 + beq check_ss2rx + mov r0, #BSP_KBDINT + b get_handler + +check_ss2rx: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r2, #0x240] + ldr r5, [r2, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0002 + beq check_ss2tx + mov r0, #BSP_SS2RX + b get_handler + +check_ss2tx: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r2, #0x240] + ldr r5, [r2, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x0004 + beq check_utx2 + mov r0, #BSP_SS2TX + b get_handler + +check_utx2: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r2, #0x240] + ldr r5, [r2, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x1000 + beq check_urx2 + mov r0, #BSP_UTXINT2 + b get_handler + +check_urx2: +#if 0 +MUST REMEMBER TO UNCOMMENT IF THIS HANDLER MOVES + ldr r4, [r2, #0x240] + ldr r5, [r2, #0x280] + and r6, r4, r5 /* only look at interrupts which are enabled */ +#endif + tst r6, #0x2000 + beq IRQ_NoInterrupt + mov r0, #BSP_URXINT2 + b get_handler + +get_handler: + + ldmia sp!,{r4, r5, r6} + + /* + * re-enable interrupts at processor level as the current + * interrupt source is now masked via VEGA logic + */ +/* + mrs r1, cpsr + and r1, r1, #0xFFFFFF3F + msr cpsr, r1 +*/ + + stmdb sp!,{lr} + bl edb7312_interrupt_dispatch + ldmia sp!,{lr} + +IRQ_NoInterrupt: + /* return to the "main" interrupt handler */ + mov pc, lr |