omap1: Use asm_irq_flags for entry-macro.S

Initialize asm_irq_flags in omap_init_irq and use it in
get_irqnr_and_base to detect between omap7xx and omap15xx/16xx.

Note that both INT_1510_IH2_IRQ and INT_1510_IH2_IRQ are defined
as 0, so use INT_1510_IH2_IRQ for both of them.

Tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 14 insertions, 13 deletions

diff --git a/arch/arm/mach-omap1/include/mach/entry-macro.S b/arch/arm/mach-omap1/include/mach/entry-macro.S
index df9060edda28..c9be6d4d83e2 100644
--- a/arch/arm/mach-omap1/include/mach/entry-macro.S
+++ b/arch/arm/mach-omap1/include/mach/entry-macro.S
@@ -14,18 +14,17 @@
 #include <mach/irqs.h>
 #include <asm/hardware/gic.h>
 
-#if (defined(CONFIG_ARCH_OMAP730)||defined(CONFIG_ARCH_OMAP850)) && \
-        (defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX))
-#error "FIXME: OMAP7XX doesn't support multiple-OMAP"
-#elif defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
-#define INT_IH2_IRQ             INT_7XX_IH2_IRQ
-#elif defined(CONFIG_ARCH_OMAP15XX)
-#define INT_IH2_IRQ             INT_1510_IH2_IRQ
-#elif defined(CONFIG_ARCH_OMAP16XX)
-#define INT_IH2_IRQ             INT_1610_IH2_IRQ
-#else
-#warning "IH2 IRQ defaulted"
-#define INT_IH2_IRQ             INT_1510_IH2_IRQ
+/*
+ * We use __glue to avoid errors with multiple definitions of
+ * .globl omap_irq_flags as it's included from entry-armv.S but not
+ * from entry-common.S.
+ */
+#ifdef __glue
+                .pushsection .data
+                .globl  omap_irq_flags
+omap_irq_flags:
+                .word   0
+                .popsection
 #endif
 
                 .macro  disable_fiq
@@ -47,9 +46,11 @@
                 beq     1510f
 
                 ldr     \irqnr, [\base, #IRQ_SIR_FIQ_REG_OFFSET]
+                ldr     \tmp, =omap_irq_flags   @ irq flags address
+                ldr     \tmp, [\tmp, #0]        @ irq flags value
                 cmp     \irqnr, #0
                 ldreq   \irqnr, [\base, #IRQ_SIR_IRQ_REG_OFFSET]
-                cmpeq   \irqnr, #INT_IH2_IRQ
+                cmpeq   \irqnr, \tmp
                 ldreq   \base, =OMAP1_IO_ADDRESS(OMAP_IH2_BASE)
                 ldreq   \irqnr, [\base, #IRQ_SIR_IRQ_REG_OFFSET]
                 addeqs  \irqnr, \irqnr, #32