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Diffstat (limited to 'target/linux/at91-2.6/image/dfboot/src/asm_isr.S')
-rw-r--r--target/linux/at91-2.6/image/dfboot/src/asm_isr.S75
1 files changed, 0 insertions, 75 deletions
diff --git a/target/linux/at91-2.6/image/dfboot/src/asm_isr.S b/target/linux/at91-2.6/image/dfboot/src/asm_isr.S
deleted file mode 100644
index 8d1d52e..0000000
--- a/target/linux/at91-2.6/image/dfboot/src/asm_isr.S
+++ /dev/null
@@ -1,75 +0,0 @@
-#include "AT91RM9200_inc.h"
-
-#define ARM_MODE_USER 0x10
-#define ARM_MODE_FIQ 0x11
-#define ARM_MODE_IRQ 0x12
-#define ARM_MODE_SVC 0x13
-#define ARM_MODE_ABORT 0x17
-#define ARM_MODE_UNDEF 0x1B
-#define ARM_MODE_SYS 0x1F
-
-#define I_BIT 0x80
-#define F_BIT 0x40
-#define T_BIT 0x20
-
-
-/* -----------------------------------------------------------------------------
- AT91F_ASM_SPI_Handler
- ---------------------
- Handler called by the AIC
-
- Save context
- Call C handler
- Restore context
- ----------------------------------------------------------------------------- */
-
-.global AT91F_ST_ASM_HANDLER
-
-AT91F_ST_ASM_HANDLER:
-/* Adjust and save LR_irq in IRQ stack */
- sub r14, r14, #4
- stmfd sp!, {r14}
-
-/* Write in the IVR to support Protect Mode
- No effect in Normal Mode
- De-assert the NIRQ and clear the source in Protect Mode */
- ldr r14, =AT91C_BASE_AIC
- str r14, [r14, #AIC_IVR]
-
-/* Save SPSR and r0 in IRQ stack */
- mrs r14, SPSR
- stmfd sp!, {r0, r14}
-
-/* Enable Interrupt and Switch in SYS Mode */
- mrs r0, CPSR
- bic r0, r0, #I_BIT
- orr r0, r0, #ARM_MODE_SYS
- msr CPSR_c, r0
-
-/* Save scratch/used registers and LR in User Stack */
- stmfd sp!, { r1-r3, r12, r14}
-
- ldr r1, =AT91F_ST_HANDLER
- mov r14, pc
- bx r1
-
-/* Restore scratch/used registers and LR from User Stack */
- ldmia sp!, { r1-r3, r12, r14}
-
-/* Disable Interrupt and switch back in IRQ mode */
- mrs r0, CPSR
- bic r0, r0, #ARM_MODE_SYS
- orr r0, r0, #I_BIT | ARM_MODE_IRQ
- msr CPSR_c, r0
-
-/* Mark the End of Interrupt on the AIC */
- ldr r0, =AT91C_BASE_AIC
- str r0, [r0, #AIC_EOICR]
-
-/* Restore SPSR_irq and r0 from IRQ stack */
- ldmia sp!, {r0, r14}
- msr SPSR_cxsf, r14
-
-/* Restore adjusted LR_irq from IRQ stack directly in the PC */
- ldmia sp!, {pc}^
-