diff options
Diffstat (limited to 'include/asm-arm/arch-h720x/entry-macro.S')
| -rw-r--r-- | include/asm-arm/arch-h720x/entry-macro.S | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/include/asm-arm/arch-h720x/entry-macro.S b/include/asm-arm/arch-h720x/entry-macro.S new file mode 100644 index 00000000000..8f165648e2a --- /dev/null +++ b/include/asm-arm/arch-h720x/entry-macro.S @@ -0,0 +1,60 @@ +/* + * include/asm-arm/arch-h720x/entry-macro.S + * + * Low-level IRQ helper macros for Hynix HMS720x based 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. + */ + + .macro disable_fiq + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp +#if defined (CONFIG_CPU_H7201) || defined (CONFIG_CPU_H7202) + @ we could use the id register on H7202, but this is not + @ properly updated when we come back from asm_do_irq + @ without a previous return from interrupt + @ (see loops below in irq_svc, irq_usr) + @ We see unmasked pending ints only, as the masked pending ints + @ are not visible here + + mov \base, #0xf0000000 @ base register + orr \base, \base, #0x24000 @ irqbase + ldr \irqstat, [\base, #0x04] @ get interrupt status +#if defined (CONFIG_CPU_H7201) + ldr \tmp, =0x001fffff +#else + mvn \tmp, #0xc0000000 +#endif + and \irqstat, \irqstat, \tmp @ mask out unused ints + mov \irqnr, #0 + + mov \tmp, #0xff00 + orr \tmp, \tmp, #0xff + tst \irqstat, \tmp + addeq \irqnr, \irqnr, #16 + moveq \irqstat, \irqstat, lsr #16 + tst \irqstat, #255 + addeq \irqnr, \irqnr, #8 + moveq \irqstat, \irqstat, lsr #8 + tst \irqstat, #15 + addeq \irqnr, \irqnr, #4 + moveq \irqstat, \irqstat, lsr #4 + tst \irqstat, #3 + addeq \irqnr, \irqnr, #2 + moveq \irqstat, \irqstat, lsr #2 + tst \irqstat, #1 + addeq \irqnr, \irqnr, #1 + moveq \irqstat, \irqstat, lsr #1 + tst \irqstat, #1 @ bit 0 should be set + .endm + + .macro irq_prio_table + .endm + +#else +#error hynix processor selection missmatch +#endif + |