Now coreboot performs IRQ routing for some boards.

You can see this by executing commands like this:
grep -r pci_assign_irqs coreboot/src/*

This basically AMD/LX based boards: pcengines/alix1c,
digitallogic/msm800sev, artecgroup/dbe61, amd/norwich, amd/db800.

Also for AMD/GX1 based boards need a patch
[http://www.pengutronix.de/software/ptxdist/temporary-src/references/geode-5530.patch]
for the right IRQ setup.
AMD/GX1 based boards is: advantech/pcm-5820, asi/mb_5blmp, axus/tc320,
bcom/winnet100, eaglelion/5bcm, iei/nova4899r, iei/juki-511p.

I have two ideas.
1. Delete duplicate code from AMD/LX based boards.
2. Add IRQ routing for AMD/GX1 boards in coreboot.

The pirq.patch for IRQ routing logically consist from of two parts:

First part of pirq.patch independent from type chipsets and assign IRQ for
ever PCI device. It part based on AMD/LX write_pirq_routing_table() function.

Second part of pirq.patch depends of type chipset and set PIRQx lines
in interrupt router. This part supports only CS5530/5536 interrupt routers.

IRQ routing functionality is included through PIRQ_ROUTE in Config.lb.

Tested on iei/juki-511p(cs5530a), iei/pcisa-lx(cs5536) and also on
TeleVideo TC7020, see
http://www.coreboot.org/pipermail/coreboot/2007-December/027973.html.

Signed-off-by: Nikolay Petukhov <nikolay.petukhov@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3196 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

17 files changed, 32 insertions, 195 deletions

diff --git a/src/mainboard/advantech/pcm-5820/Options.lb b/src/mainboard/advantech/pcm-5820/Options.lb
index b8199f1a54..9d579879b7 100644
--- a/src/mainboard/advantech/pcm-5820/Options.lb
+++ b/src/mainboard/advantech/pcm-5820/Options.lb
@@ -63,6 +63,7 @@ uses CONFIG_VIDEO_MB
 uses CONFIG_SPLASH_GRAPHIC
 uses CONFIG_GX1_VIDEO
 uses CONFIG_GX1_VIDEOMODE
+uses PIRQ_ROUTE
 
 ## Enable VGA with a splash screen (only 640x480 to run on most monitors).
 ## We want to support up to 1024x768@16 so we need 2MiB video memory.
@@ -75,6 +76,7 @@ default CONFIG_VIDEO_MB = 2
 default ROM_SIZE = 256 * 1024
 default HAVE_PIRQ_TABLE = 1
 default IRQ_SLOT_COUNT = 0		# Override this in targets/*/Config.lb.
+default PIRQ_ROUTE = 1
 default HAVE_FALLBACK_BOOT = 1
 default HAVE_MP_TABLE = 0
 default HAVE_HARD_RESET = 0
diff --git a/src/mainboard/amd/db800/Options.lb b/src/mainboard/amd/db800/Options.lb
index 6a0dc3f8c0..ef62ec3eec 100644
--- a/src/mainboard/amd/db800/Options.lb
+++ b/src/mainboard/amd/db800/Options.lb
@@ -48,6 +48,7 @@ uses CONFIG_VIDEO_MB
 uses USE_DCACHE_RAM
 uses DCACHE_RAM_BASE
 uses DCACHE_RAM_SIZE
+uses PIRQ_ROUTE
 
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE  = 256*1024
@@ -84,6 +85,7 @@ default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2=1
 ##
 default HAVE_PIRQ_TABLE=1
 default IRQ_SLOT_COUNT=4
+default PIRQ_ROUTE=1
 #object irq_tables.o
 
 ##
diff --git a/src/mainboard/amd/db800/irq_tables.c b/src/mainboard/amd/db800/irq_tables.c
index 9fcc5eb3b6..f9a6312fa8 100644
--- a/src/mainboard/amd/db800/irq_tables.c
+++ b/src/mainboard/amd/db800/irq_tables.c
@@ -65,42 +65,5 @@ const struct irq_routing_table intel_irq_routing_table = {
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
-	int i, j, k, num_entries;
-	unsigned char pirq[4];
-	uint16_t chipset_irq_map;
-	uint32_t pciAddr, pirtable_end;
-	struct irq_routing_table *pirq_tbl;
-
-	pirtable_end = copy_pirq_routing_table(addr);
-
-	/* Set up chipset IRQ steering. */
-	pciAddr = 0x80000000 | (CHIPSET_DEV_NUM << 11) | 0x5C;
-	chipset_irq_map = (PIRQD << 12 | PIRQC << 8 | PIRQB << 4 | PIRQA);
-	printk_debug("%s(%08X, %04X)\n", __FUNCTION__, pciAddr,
-		     chipset_irq_map);
-	outl(pciAddr & ~3, 0xCF8);
-	outl(chipset_irq_map, 0xCFC);
-
-	pirq_tbl = (struct irq_routing_table *)(addr);
-	num_entries = (pirq_tbl->size - 32) / 16;
-
-	/* Set PCI IRQs. */
-	for (i = 0; i < num_entries; i++) {
-		printk_debug("PIR Entry %d Dev/Fn: %X Slot: %d\n", i,
-			     pirq_tbl->slots[i].devfn, pirq_tbl->slots[i].slot);
-		for (j = 0; j < 4; j++) {
-			printk_debug("INT: %c bitmap: %x ", 'A' + j,
-				     pirq_tbl->slots[i].irq[j].bitmap);
-			for (k = 0; (!((pirq_tbl->slots[i].irq[j].bitmap >> k) & 1)) && (pirq_tbl->slots[i].irq[j].bitmap != 0); k++) ;	/* Finds lsb in bitmap to IRQ#. */
-			pirq[j] = k;
-			printk_debug("PIRQ: %d\n", k);
-		}
-
-		/* Bus, device, slots IRQs for {A,B,C,D}. */
-		pci_assign_irqs(pirq_tbl->slots[i].bus,
-				pirq_tbl->slots[i].devfn >> 3, pirq);
-	}
-
-	/* Put the PIR table in memory and checksum. */
-	return pirtable_end;
+	return copy_pirq_routing_table(addr);
 }
diff --git a/src/mainboard/amd/norwich/Options.lb b/src/mainboard/amd/norwich/Options.lb
index 0d4b2239ff..29d89d6c17 100644
--- a/src/mainboard/amd/norwich/Options.lb
+++ b/src/mainboard/amd/norwich/Options.lb
@@ -48,6 +48,7 @@ uses CONFIG_VIDEO_MB
 uses USE_DCACHE_RAM
 uses DCACHE_RAM_BASE
 uses DCACHE_RAM_SIZE
+uses PIRQ_ROUTE
 
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE  = 256*1024
@@ -84,6 +85,7 @@ default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2=1
 ##
 default HAVE_PIRQ_TABLE=1
 default IRQ_SLOT_COUNT=6
+default PIRQ_ROUTE=1
 #object irq_tables.o
 
 ##
diff --git a/src/mainboard/amd/norwich/irq_tables.c b/src/mainboard/amd/norwich/irq_tables.c
index afea876ba1..5e408b7241 100644
--- a/src/mainboard/amd/norwich/irq_tables.c
+++ b/src/mainboard/amd/norwich/irq_tables.c
@@ -67,42 +67,5 @@ const struct irq_routing_table intel_irq_routing_table = {
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
-	int i, j, k, num_entries;
-	unsigned char pirq[4];
-	uint16_t chipset_irq_map;
-	uint32_t pciAddr, pirtable_end;
-	struct irq_routing_table *pirq_tbl;
-
-	pirtable_end = copy_pirq_routing_table(addr);
-
-	/* Set up chipset IRQ steering. */
-	pciAddr = 0x80000000 | (CHIPSET_DEV_NUM << 11) | 0x5C;
-	chipset_irq_map = (PIRQD << 12 | PIRQC << 8 | PIRQB << 4 | PIRQA);
-	printk_debug("%s(%08X, %04X)\n", __FUNCTION__, pciAddr,
-		     chipset_irq_map);
-	outl(pciAddr & ~3, 0xCF8);
-	outl(chipset_irq_map, 0xCFC);
-
-	pirq_tbl = (struct irq_routing_table *)(addr);
-	num_entries = (pirq_tbl->size - 32) / 16;
-
-	/* Set PCI IRQs. */
-	for (i = 0; i < num_entries; i++) {
-		printk_debug("PIR Entry %d Dev/Fn: %X Slot: %d\n", i,
-			     pirq_tbl->slots[i].devfn, pirq_tbl->slots[i].slot);
-		for (j = 0; j < 4; j++) {
-			printk_debug("INT: %c bitmap: %x ", 'A' + j,
-				     pirq_tbl->slots[i].irq[j].bitmap);
-			for (k = 0; (!((pirq_tbl->slots[i].irq[j].bitmap >> k) & 1)) && (pirq_tbl->slots[i].irq[j].bitmap != 0); k++) ;	/* Finds lsb in bitmap to IRQ#. */
-			pirq[j] = k;
-			printk_debug("PIRQ: %d\n", k);
-		}
-
-		/* Bus, device, slots IRQs for {A,B,C,D}. */
-		pci_assign_irqs(pirq_tbl->slots[i].bus,
-				pirq_tbl->slots[i].devfn >> 3, pirq);
-	}
-
-	/* Put the PIR table in memory and checksum. */
-	return pirtable_end;
+	return copy_pirq_routing_table(addr);
 }
diff --git a/src/mainboard/artecgroup/dbe61/Options.lb b/src/mainboard/artecgroup/dbe61/Options.lb
index d95f0a9bf7..9a35425463 100644
--- a/src/mainboard/artecgroup/dbe61/Options.lb
+++ b/src/mainboard/artecgroup/dbe61/Options.lb
@@ -48,6 +48,7 @@ uses CONFIG_VIDEO_MB
 uses USE_DCACHE_RAM
 uses DCACHE_RAM_BASE
 uses DCACHE_RAM_SIZE
+uses PIRQ_ROUTE
 
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE  = 256*1024
@@ -84,7 +85,7 @@ default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2=1
 ##
 default HAVE_PIRQ_TABLE=1
 default IRQ_SLOT_COUNT=3
-
+default PIRQ_ROUTE=1
 #object irq_tables.o
 
 ##
diff --git a/src/mainboard/artecgroup/dbe61/irq_tables.c b/src/mainboard/artecgroup/dbe61/irq_tables.c
index 1c06e1d8c7..b42c4b514e 100644
--- a/src/mainboard/artecgroup/dbe61/irq_tables.c
+++ b/src/mainboard/artecgroup/dbe61/irq_tables.c
@@ -64,42 +64,5 @@ const struct irq_routing_table intel_irq_routing_table = {
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
-	int i, j, k, num_entries;
-	unsigned char pirq[4];
-	uint16_t chipset_irq_map;
-	uint32_t pciAddr, pirtable_end;
-	struct irq_routing_table *pirq_tbl;
-
-	pirtable_end = copy_pirq_routing_table(addr);
-
-	/* Set up chipset IRQ steering. */
-	pciAddr = 0x80000000 | (CHIPSET_DEV_NUM << 11) | 0x5C;
-	chipset_irq_map = (PIRQD << 12 | PIRQC << 8 | PIRQB << 4 | PIRQA);
-	printk_debug("%s(%08X, %04X)\n", __FUNCTION__, pciAddr,
-		     chipset_irq_map);
-	outl(pciAddr & ~3, 0xCF8);
-	outl(chipset_irq_map, 0xCFC);
-
-	pirq_tbl = (struct irq_routing_table *)(addr);
-	num_entries = (pirq_tbl->size - 32) / 16;
-
-	/* Set PCI IRQs. */
-	for (i = 0; i < num_entries; i++) {
-		printk_debug("PIR Entry %d Dev/Fn: %X Slot: %d\n", i,
-			     pirq_tbl->slots[i].devfn, pirq_tbl->slots[i].slot);
-		for (j = 0; j < 4; j++) {
-			printk_debug("INT: %c bitmap: %x ", 'A' + j,
-				     pirq_tbl->slots[i].irq[j].bitmap);
-			for (k = 0; (!((pirq_tbl->slots[i].irq[j].bitmap >> k) & 1)) && (pirq_tbl->slots[i].irq[j].bitmap != 0); k++) ;	/* Finds lsb in bitmap to IRQ#. */
-			pirq[j] = k;
-			printk_debug("PIRQ: %d\n", k);
-		}
-
-		/* Bus, device, slots IRQs for {A,B,C,D}. */
-		pci_assign_irqs(pirq_tbl->slots[i].bus,
-				pirq_tbl->slots[i].devfn >> 3, pirq);
-	}
-
-	/* Put the PIR table in memory and checksum. */
-	return pirtable_end;
-}
\ No newline at end of file
+	return copy_pirq_routing_table(addr);
+}
diff --git a/src/mainboard/asi/mb_5blmp/Options.lb b/src/mainboard/asi/mb_5blmp/Options.lb
index c1bf6cd517..1cdd4f8695 100644
--- a/src/mainboard/asi/mb_5blmp/Options.lb
+++ b/src/mainboard/asi/mb_5blmp/Options.lb
@@ -42,7 +42,7 @@ uses CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2
 # uses CONFIG_CONSOLE_VGA
 # uses CONFIG_PCI_ROM_RUN
 uses CONFIG_VIDEO_MB
-
+uses PIRQ_ROUTE
 
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE = 256 * 1024
@@ -71,6 +71,7 @@ default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2=1
 ##
 default HAVE_PIRQ_TABLE=1
 default IRQ_SLOT_COUNT=5        # TODO?
+default PIRQ_ROUTE=1
 
 ##
 ## Build code to export a CMOS option table
diff --git a/src/mainboard/axus/tc320/Options.lb b/src/mainboard/axus/tc320/Options.lb
index 36fde166bc..ed56fd923f 100644
--- a/src/mainboard/axus/tc320/Options.lb
+++ b/src/mainboard/axus/tc320/Options.lb
@@ -63,6 +63,7 @@ uses CONFIG_VIDEO_MB
 uses CONFIG_SPLASH_GRAPHIC
 uses CONFIG_GX1_VIDEO
 uses CONFIG_GX1_VIDEOMODE
+uses PIRQ_ROUTE
 
 ## Enable VGA with a splash screen (only 640x480 to run on most monitors).
 ## We want to support up to 1024x768@16 so we need 2MiB video memory.
@@ -82,6 +83,7 @@ default CONFIG_UDELAY_TSC = 1
 default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2 = 1
 default HAVE_PIRQ_TABLE = 1
 default IRQ_SLOT_COUNT = 2	# Soldered NIC, internal USB, no real slots
+default PIRQ_ROUTE = 1
 default HAVE_OPTION_TABLE = 0
 default ROM_IMAGE_SIZE = 64 * 1024
 default FALLBACK_SIZE = 128 * 1024
diff --git a/src/mainboard/bcom/winnet100/Options.lb b/src/mainboard/bcom/winnet100/Options.lb
index 4e4e21fc25..c6346e22cb 100644
--- a/src/mainboard/bcom/winnet100/Options.lb
+++ b/src/mainboard/bcom/winnet100/Options.lb
@@ -63,6 +63,7 @@ uses CONFIG_VIDEO_MB
 uses CONFIG_SPLASH_GRAPHIC
 uses CONFIG_GX1_VIDEO
 uses CONFIG_GX1_VIDEOMODE
+uses PIRQ_ROUTE
 
 ## Enable VGA with a splash screen (only 640x480 to run on most monitors).
 ## We want to support up to 1024x768@16 so we need 2MiB video memory.
@@ -82,6 +83,7 @@ default CONFIG_UDELAY_TSC = 1
 default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2 = 1
 default HAVE_PIRQ_TABLE = 1
 default IRQ_SLOT_COUNT = 2	# Soldered NIC, internal USB, no real slots
+default PIRQ_ROUTE = 1
 default HAVE_OPTION_TABLE = 0
 default ROM_IMAGE_SIZE = 64 * 1024
 default FALLBACK_SIZE = 128 * 1024
diff --git a/src/mainboard/digitallogic/msm800sev/Options.lb b/src/mainboard/digitallogic/msm800sev/Options.lb
index cdab41a892..559a524698 100644
--- a/src/mainboard/digitallogic/msm800sev/Options.lb
+++ b/src/mainboard/digitallogic/msm800sev/Options.lb
@@ -48,6 +48,7 @@ uses CONFIG_VIDEO_MB
 uses USE_DCACHE_RAM
 uses DCACHE_RAM_BASE
 uses DCACHE_RAM_SIZE
+uses PIRQ_ROUTE
 
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE  = 256*1024
@@ -84,6 +85,7 @@ default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2=1
 ##
 default HAVE_PIRQ_TABLE=1
 default IRQ_SLOT_COUNT=6
+default PIRQ_ROUTE=1
 #object irq_tables.o
 
 ##
diff --git a/src/mainboard/digitallogic/msm800sev/irq_tables.c b/src/mainboard/digitallogic/msm800sev/irq_tables.c
index 6b5fe810a7..724d163a0a 100644
--- a/src/mainboard/digitallogic/msm800sev/irq_tables.c
+++ b/src/mainboard/digitallogic/msm800sev/irq_tables.c
@@ -69,39 +69,7 @@ const struct irq_routing_table intel_irq_routing_table = {
 	}
 };
 
-
-unsigned long write_pirq_routing_table(unsigned long addr){
-       int i, j, k, num_entries;
-       unsigned int pirq[4];
-       uint16_t chipset_irq_map;
-       uint32_t pciAddr, pirtable_end;
-       struct irq_routing_table *pirq_tbl;
-
-       pirtable_end = copy_pirq_routing_table(addr);
-
-       /* Set up chipset IRQ steering */
-       pciAddr = 0x80000000 | (CHIPSET_DEV_NUM << 11) | 0x5C;
-       chipset_irq_map = (11 << 12 | 10 << 8 | 11 << 4 | 10);
-       printk_debug("%s(%08X, %04X)\n", __FUNCTION__, pciAddr, chipset_irq_map);
-       outl(pciAddr & ~3, 0xCF8);
-       outl(chipset_irq_map, 0xCFC);
-
-       pirq_tbl = (struct irq_routing_table *)(addr);
-       num_entries = (pirq_tbl->size - 32)/16;
-
-       /* Set PCI IRQs */
-       for (i=0; i < num_entries; i++){
-               printk_debug("PIR Entry %d Dev/Fn: %X Slot: %d\n", i, pirq_tbl->slots[i].devfn, pirq_tbl->slots[i].slot);
-               for (j = 0; j < 4; j++){
-               printk_debug("INT: %c bitmap: %x ", 'A'+j, pirq_tbl->slots[i].irq[j].bitmap);
-                       for (k = 0; (!((pirq_tbl->slots[i].irq[j].bitmap >> k) & 1)) && (pirq_tbl->slots[i].irq[j].bitmap != 0); k++); /* finds lsb in bitmap to IRQ# */
-                       pirq[j] = k;
-                       printk_debug("PIRQ: %d\n", k);
-               }
-               pci_assign_irqs(pirq_tbl->slots[i].bus, pirq_tbl->slots[i].devfn, pirq);        /* bus, device, slots IRQs for {A,B,C,D} */
-       }
-
-       /* put the PIR table in memory and checksum */
-       return pirtable_end;
+unsigned long write_pirq_routing_table(unsigned long addr)
+{
+	return copy_pirq_routing_table(addr);
 }
-
diff --git a/src/mainboard/eaglelion/5bcm/Options.lb b/src/mainboard/eaglelion/5bcm/Options.lb
index 280f582845..c10b7b9cc0 100644
--- a/src/mainboard/eaglelion/5bcm/Options.lb
+++ b/src/mainboard/eaglelion/5bcm/Options.lb
@@ -42,6 +42,7 @@ uses TTYS0_LCS
 uses CONFIG_UDELAY_TSC
 uses CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2
 uses CONFIG_VIDEO_MB
+uses PIRQ_ROUTE
 
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE  = 256*1024
@@ -75,6 +76,7 @@ default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2=1
 ##
 default HAVE_PIRQ_TABLE=1
 default IRQ_SLOT_COUNT=2
+default PIRQ_ROUTE=1
 #object irq_tables.o
 
 ##
diff --git a/src/mainboard/iei/juki-511p/Options.lb b/src/mainboard/iei/juki-511p/Options.lb
index cd5be9cad3..ea703f1b86 100644
--- a/src/mainboard/iei/juki-511p/Options.lb
+++ b/src/mainboard/iei/juki-511p/Options.lb
@@ -43,6 +43,7 @@ uses TTYS0_BAUD
 uses TTYS0_BASE
 uses TTYS0_LCS
 uses CONFIG_VIDEO_MB
+uses PIRQ_ROUTE
 
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE  = 256*1024
@@ -72,6 +73,7 @@ default CONFIG_UDELAY_IO=1
 ##
 default HAVE_PIRQ_TABLE=0
 default IRQ_SLOT_COUNT=2
+default PIRQ_ROUTE=1
 #object irq_tables.o
 
 ##
diff --git a/src/mainboard/iei/nova4899r/Options.lb b/src/mainboard/iei/nova4899r/Options.lb
index 778cf737fc..3f2b8e3747 100644
--- a/src/mainboard/iei/nova4899r/Options.lb
+++ b/src/mainboard/iei/nova4899r/Options.lb
@@ -45,6 +45,7 @@ uses CONFIG_COMPRESSED_PAYLOAD_LZMA
 uses CONFIG_COMPRESSED_PAYLOAD_NRV2B
 uses CONFIG_PRECOMPRESSED_PAYLOAD
 uses CONFIG_VIDEO_MB
+uses PIRQ_ROUTE
 
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE  = 256*1024
@@ -82,6 +83,7 @@ default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2=1
 ##
 default HAVE_PIRQ_TABLE=1
 default IRQ_SLOT_COUNT=7
+default PIRQ_ROUTE=1
 #object irq_tables.o
 
 ##
diff --git a/src/mainboard/pcengines/alix1c/Options.lb b/src/mainboard/pcengines/alix1c/Options.lb
index 3e5c0456cc..2888259e88 100644
--- a/src/mainboard/pcengines/alix1c/Options.lb
+++ b/src/mainboard/pcengines/alix1c/Options.lb
@@ -68,6 +68,7 @@ uses CONFIG_VIDEO_MB
 uses USE_DCACHE_RAM
 uses DCACHE_RAM_BASE
 uses DCACHE_RAM_SIZE
+uses PIRQ_ROUTE
 
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE  = 512*1024
@@ -104,7 +105,7 @@ default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2=1
 ##
 default HAVE_PIRQ_TABLE=1
 default IRQ_SLOT_COUNT=5
-
+default PIRQ_ROUTE=1
 ##
 ## Build code to export a CMOS option table
 ##
diff --git a/src/mainboard/pcengines/alix1c/irq_tables.c b/src/mainboard/pcengines/alix1c/irq_tables.c
index ff30328ae1..a7fd6deea7 100644
--- a/src/mainboard/pcengines/alix1c/irq_tables.c
+++ b/src/mainboard/pcengines/alix1c/irq_tables.c
@@ -106,46 +106,5 @@ const struct irq_routing_table intel_irq_routing_table = {
 
 unsigned long write_pirq_routing_table(unsigned long addr)
 {
-	int i, j, k, num_entries;
-	unsigned char pirq[4];
-	uint16_t chipset_irq_map;
-	uint32_t pciAddr, pirtable_end;
-	struct irq_routing_table *pirq_tbl;
-
-	pirtable_end = copy_pirq_routing_table(addr);
-
-	/* Set up chipset IRQ steering. */
-	pciAddr = 0x80000000 | (CHIPSET_DEV_NUM << 11) | 0x5C;
-	chipset_irq_map = (PIRQD << 12 | PIRQC << 8 | PIRQB << 4 | PIRQA);
-	printk_debug("%s(%08X, %04X)\n", __FUNCTION__, pciAddr,
-		     chipset_irq_map);
-	outl(pciAddr & ~3, 0xCF8);
-	outl(chipset_irq_map, 0xCFC);
-
-	pirq_tbl = (struct irq_routing_table *) (addr);
-	num_entries = (pirq_tbl->size - 32) / 16;
-
-	/* Set PCI IRQs. */
-	for (i = 0; i < num_entries; i++) {
-		printk_debug("PIR Entry %d Dev/Fn: %X Slot: %d\n", i,
-			     pirq_tbl->slots[i].devfn, pirq_tbl->slots[i].slot);
-		for (j = 0; j < 4; j++) {
-			printk_debug("INT: %c bitmap: %x ", 'A' + j,
-				     pirq_tbl->slots[i].irq[j].bitmap);
-			/* Finds lsb in bitmap to IRQ#. */
-			for (k = 0; 
-			     (!((pirq_tbl->slots[i].irq[j].bitmap >> k) & 1)) 
-				     && (pirq_tbl->slots[i].irq[j].bitmap != 0);
-			     k++);
-			pirq[j] = k;
-			printk_debug("PIRQ: %d\n", k);
-		}
-
-		/* Bus, device, slots IRQs for {A,B,C,D}. */
-		pci_assign_irqs(pirq_tbl->slots[i].bus,
-				pirq_tbl->slots[i].devfn >> 3, pirq);
-	}
-
-	/* Put the PIR table in memory and checksum. */
-	return pirtable_end;
+	return copy_pirq_routing_table(addr);
 }