Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-arm/arch-s3c2410/entry-macro.S b/include/asm-arm/arch-s3c2410/entry-macro.S
new file mode 100644
index 0000000..b7d4d7f
--- /dev/null
+++ b/include/asm-arm/arch-s3c2410/entry-macro.S
@@ -0,0 +1,119 @@
+/*
+ * include/asm-arm/arch-s3c2410/entry-macro.S
+ *
+ * Low-level IRQ helper macros for S3C2410-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.
+
+ * Modifications:
+ * 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA
+ */
+
+
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+ mov \tmp, #S3C24XX_VA_IRQ
+ ldr \irqnr, [ \tmp, #0x14 ] @ get irq no
+30000:
+ teq \irqnr, #4
+ teqne \irqnr, #5
+ beq 1002f @ external irq reg
+
+ @ debug check to see if interrupt reported is the same
+ @ as the offset....
+
+ teq \irqnr, #0
+ beq 20002f
+ ldr \irqstat, [ \tmp, #0x10 ] @ INTPND
+ mov \irqstat, \irqstat, lsr \irqnr
+ tst \irqstat, #1
+ bne 20002f
+
+ /* debug/warning if we get an invalud response from the
+ * INTOFFSET register */
+#if 1
+ stmfd r13!, { r0 - r4 , r8-r12, r14 }
+ ldr r1, [ \tmp, #0x14 ] @ INTOFFSET
+ ldr r2, [ \tmp, #0x10 ] @ INTPND
+ ldr r3, [ \tmp, #0x00 ] @ SRCPND
+ adr r0, 20003f
+ bl printk
+ b 20004f
+
+20003:
+ .ascii "<7>irq: err - bad offset %d, intpnd=%08x, srcpnd=%08x\n"
+ .byte 0
+ .align 4
+20004:
+ mov r1, #1
+ mov \tmp, #S3C24XX_VA_IRQ
+ ldmfd r13!, { r0 - r4 , r8-r12, r14 }
+#endif
+
+ @ try working out interrupt number for ourselves
+ mov \irqnr, #0
+ ldr \irqstat, [ \tmp, #0x10 ] @ INTPND
+10021:
+ movs \irqstat, \irqstat, lsr#1
+ bcs 30000b @ try and re-start the proccess
+ add \irqnr, \irqnr, #1
+ cmp \irqnr, #32
+ ble 10021b
+
+ @ found no interrupt, set Z flag and leave
+ movs \irqnr, #0
+ b 1001f
+
+20005:
+20002: @ exit
+ @ we base the s3c2410x interrupts at 16 and above to allow
+ @ isa peripherals to have their standard interrupts, also
+ @ ensure that Z flag is un-set on exit
+
+ @ note, we cannot be sure if we get IRQ_EINT0 (0) that
+ @ there is simply no interrupt pending, so in all other
+ @ cases we jump to say we have found something, otherwise
+ @ we check to see if the interrupt really is assrted
+ adds \irqnr, \irqnr, #IRQ_EINT0
+ teq \irqnr, #IRQ_EINT0
+ bne 1001f @ exit
+ ldr \irqstat, [ \tmp, #0x10 ] @ INTPND
+ teq \irqstat, #0
+ moveq \irqnr, #0
+ b 1001f
+
+ @ we get here from no main or external interrupts pending
+1002:
+ add \tmp, \tmp, #S3C24XX_VA_GPIO - S3C24XX_VA_IRQ
+ ldr \irqstat, [ \tmp, # 0xa8 ] @ EXTINTPEND
+ ldr \irqnr, [ \tmp, # 0xa4 ] @ EXTINTMASK
+
+ bic \irqstat, \irqstat, \irqnr @ clear masked irqs
+
+ mov \irqnr, #IRQ_EINT4 @ start extint nos
+ mov \irqstat, \irqstat, lsr#4 @ ignore bottom 4 bits
+10021:
+ movs \irqstat, \irqstat, lsr#1
+ bcs 1004f
+ add \irqnr, \irqnr, #1
+ cmp \irqnr, #IRQ_EINT23
+ ble 10021b
+
+ @ found no interrupt, set Z flag and leave
+ movs \irqnr, #0
+
+1004: @ ensure Z flag clear in case our MOVS shifted out the last bit
+ teq \irqnr, #0
+1001:
+ @ exit irq routine
+ .endm
+
+
+ /* currently don't need an disable_fiq macro */
+
+ .macro disable_fiq
+ .endm
+
+