diff options
Diffstat (limited to 'arch/arm/kernel/entry-armv.S')
| -rw-r--r-- | arch/arm/kernel/entry-armv.S | 42 |
1 files changed, 36 insertions, 6 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 3e015d866..7e6d4fe51 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -298,6 +298,30 @@ irq_prio_ebsa110: .macro irq_prio_table .endm + +#elif defined(CONFIG_ARCH_SA1100) + + .macro disable_fiq + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base + mov r4, #0xfa000000 @ ICIP = 0xfa050000 + add r4, r4, #0x00050000 + ldr \irqstat, [r4] @ get irqs + ldr \irqnr, [r4, #4] @ ICMR = 0xfa050004 + ands \irqstat, \irqstat, \irqnr + mov \irqnr, #0 + beq 1002f +1001: tst \irqstat, #1 + addeq \irqnr, \irqnr, #1 + moveq \irqstat, \irqstat, lsr #1 + beq 1001b +1002: + .endm + + .macro irq_prio_table + .endm + #else #error Unknown architecture #endif @@ -449,11 +473,15 @@ __dabt_svc: sub sp, sp, #S_FRAME_SIZE add r5, sp, #S_SP mov r1, lr stmia r5, {r0 - r4} @ save sp_SVC, lr_SVC, pc, cpsr, old_ro + + mrs r9, cpsr @ Enable interrupts if they were tst r3, #I_BIT - mrseq r0, cpsr @ Enable interrupts if they were - biceq r0, r0, #I_BIT @ previously - msreq cpsr, r0 + biceq r9, r9, #I_BIT @ previously + mov r0, r2 +/* + * This routine must not corrupt r9 + */ #ifdef MULTI_CPU ldr r2, .LCprocfns mov lr, pc @@ -461,6 +489,7 @@ __dabt_svc: sub sp, sp, #S_FRAME_SIZE #else bl cpu_data_abort #endif + msr cpsr, r9 mov r3, sp bl SYMBOL_NAME(do_DataAbort) ldr r0, [sp, #S_PSR] @@ -544,9 +573,6 @@ __dabt_usr: sub sp, sp, #S_FRAME_SIZE @ Allocate frame size in one go #endif mov fp, #0 - mrs r2, cpsr @ Enable interrupts if they were - bic r2, r2, #I_BIT @ previously - msr cpsr, r2 #ifdef MULTI_CPU ldr r2, .LCprocfns mov lr, pc @@ -554,6 +580,10 @@ __dabt_usr: sub sp, sp, #S_FRAME_SIZE @ Allocate frame size in one go #else bl cpu_data_abort #endif + mrs r3, cpsr @ Enable interrupts if they were + bic r3, r3, #I_BIT @ previously + msr cpsr, r3 + mov r3, sp adrsvc al, lr, ret_from_sys_call b SYMBOL_NAME(do_DataAbort) |