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authorTony Lindgren <tony@atomide.com>2010-02-15 18:27:25 +0100
committerTony Lindgren <tony@atomide.com>2010-02-15 18:27:25 +0100
commit61a07c80a7cf7333475e7eda9934dac9a8a9c8b9 (patch)
tree82b5d5548d0f03a4e438225ef20adc9653aa7e3d /arch
parentomap2/3/4: Clean up entry-macro.s for adding support for omap4 multiboot (diff)
downloadlinux-61a07c80a7cf7333475e7eda9934dac9a8a9c8b9.tar.xz
linux-61a07c80a7cf7333475e7eda9934dac9a8a9c8b9.zip
omap2/3/4: Allow booting omap4 with multi-omap configuration
Allow booting omap4 with multi-omap configuration. Tested only on omap2 and omap3, please somebody test on omap4 and ack. Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-omap2/include/mach/entry-macro.S36
1 files changed, 29 insertions, 7 deletions
diff --git a/arch/arm/mach-omap2/include/mach/entry-macro.S b/arch/arm/mach-omap2/include/mach/entry-macro.S
index fe3c9ad59450..ff25c7e4e606 100644
--- a/arch/arm/mach-omap2/include/mach/entry-macro.S
+++ b/arch/arm/mach-omap2/include/mach/entry-macro.S
@@ -48,14 +48,18 @@ omap_irq_base: .word 0
ldr \base, =omap_irq_base @ irq base address
ldr \base, [\base, #0] @ irq base value
cmp \base, #0 @ already configured?
- bne 9998f @ nothing to do
+ bne 9997f @ nothing to do
mrc p15, 0, \tmp, c0, c0, 0 @ get processor revision
and \tmp, \tmp, #0x000f0000 @ only check architecture
cmp \tmp, #0x00060000 @ is v6?
beq 2400f @ found v6 so it's omap24xx
- cmp \tmp, #0x000f0000 @ is cortex?
- beq 3400f @ found v7 so it's omap34xx
+ mrc p15, 0, \tmp, c0, c0, 0 @ get processor revision
+ and \tmp, \tmp, #0x000000f0 @ check cortex 8 or 9
+ cmp \tmp, #0x00000080 @ cortex A-8?
+ beq 3400f @ found A-8 so it's omap34xx
+ cmp \tmp, #0x00000090 @ cortex A-9?
+ beq 4400f @ found A-9 so it's omap44xx
2400: ldr \base, =OMAP2_IRQ_BASE
ldr \tmp, =omap_irq_base
str \base, [\tmp, #0]
@@ -64,23 +68,41 @@ omap_irq_base: .word 0
ldr \tmp, =omap_irq_base
str \base, [\tmp, #0]
b 9b
-9998:
+4400: ldr \base, =OMAP4_IRQ_BASE
+ ldr \tmp, =omap_irq_base
+ str \base, [\tmp, #0]
+ b 9b
+9997:
.endm
/* Check the pending interrupts. Note that base already set */
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+ tst \base, #0x100 @ gic address?
+ bne 4401f @ found gic
+
+ /* Handle omap2 and omap3 */
ldr \irqnr, [\base, #0x98] /* IRQ pending reg 1 */
cmp \irqnr, #0x0
- bne 9999f
+ bne 9998f
ldr \irqnr, [\base, #0xb8] /* IRQ pending reg 2 */
cmp \irqnr, #0x0
- bne 9999f
+ bne 9998f
ldr \irqnr, [\base, #0xd8] /* IRQ pending reg 3 */
cmp \irqnr, #0x0
-9999:
+9998:
ldrne \irqnr, [\base, #INTCPS_SIR_IRQ_OFFSET]
and \irqnr, \irqnr, #ACTIVEIRQ_MASK /* Clear spurious bits */
+ b 9999f
+ /* Handle omap4 */
+4401: ldr \irqstat, [\base, #GIC_CPU_INTACK]
+ ldr \tmp, =1021
+ bic \irqnr, \irqstat, #0x1c00
+ cmp \irqnr, #29
+ cmpcc \irqnr, \irqnr
+ cmpne \irqnr, \tmp
+ cmpcs \irqnr, \irqnr
+9999:
.endm