diff options
Diffstat (limited to 'include/asm-arm/arch-lh7a40x/entry-macro.S')
| -rw-r--r-- | include/asm-arm/arch-lh7a40x/entry-macro.S | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/asm-arm/arch-lh7a40x/entry-macro.S b/include/asm-arm/arch-lh7a40x/entry-macro.S new file mode 100644 index 000000000000..865f396aa63c --- /dev/null +++ b/include/asm-arm/arch-lh7a40x/entry-macro.S @@ -0,0 +1,67 @@ +/* + * include/asm-arm/arch-lh7a40x/entry-macro.S + * + * Low-level IRQ helper macros for LH7A40x platforms + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +# if defined (CONFIG_ARCH_LH7A400) && defined (CONFIG_ARCH_LH7A404) +# error "LH7A400 and LH7A404 are mutually exclusive" +# endif + +# if defined (CONFIG_ARCH_LH7A400) + .macro disable_fiq + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + mov \irqnr, #0 + mov \base, #io_p2v(0x80000000) @ APB registers + ldr \irqstat, [\base, #0x500] @ PIC INTSR + +1001: movs \irqstat, \irqstat, lsr #1 @ Shift into carry + bcs 1008f @ Bit set; irq found + add \irqnr, \irqnr, #1 + bne 1001b @ Until no bits + b 1009f @ Nothing? Hmm. +1008: movs \irqstat, #1 @ Force !Z +1009: + .endm + +#elif defined(CONFIG_ARCH_LH7A404) + + .macro disable_fiq + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + mov \irqnr, #0 @ VIC1 irq base + mov \base, #io_p2v(0x80000000) @ APB registers + add \base, \base, #0x8000 + ldr \tmp, [\base, #0x0030] @ VIC1_VECTADDR + tst \tmp, #VA_VECTORED @ Direct vectored + bne 1002f + tst \tmp, #VA_VIC1DEFAULT @ Default vectored VIC1 + ldrne \irqstat, [\base, #0] @ VIC1_IRQSTATUS + bne 1001f + add \base, \base, #(0xa000 - 0x8000) + ldr \tmp, [\base, #0x0030] @ VIC2_VECTADDR + tst \tmp, #VA_VECTORED @ Direct vectored + bne 1002f + ldr \irqstat, [\base, #0] @ VIC2_IRQSTATUS + mov \irqnr, #32 @ VIC2 irq base + +1001: movs \irqstat, \irqstat, lsr #1 @ Shift into carry + bcs 1008f @ Bit set; irq found + add \irqnr, \irqnr, #1 + bne 1001b @ Until no bits + b 1009f @ Nothing? Hmm. +1002: and \irqnr, \tmp, #0x3f @ Mask for valid bits +1008: movs \irqstat, #1 @ Force !Z + str \tmp, [\base, #0x0030] @ Clear vector +1009: + .endm +#endif + + |