[PATCH] ppc32: Adds support for the LITE5200B dev board

ppc32: Adds support for the LITE5200B dev board

This LITE5200B devboard is the new development board for the
Freescale MPC5200 processor. It has two PCI slots and so a
different PCI IRQ routing.

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 37 insertions, 3 deletions

diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index 3a3e302b4ea2..75802ca0f8c7 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -715,6 +715,13 @@ config LITE5200
           much but it's only been tested on this board version. I think this
           board is also known as IceCube.
 
+config LITE5200B
+        bool "Freescale LITE5200B"
+        depends LITE5200
+        help
+          Support for the LITE5200B dev board for the MPC5200 from Freescale.
+          This is the new board with 2 PCI slots.
+
 config MPC834x_SYS
         bool "Freescale MPC834x SYS"
         help
diff --git a/arch/ppc/platforms/lite5200.c b/arch/ppc/platforms/lite5200.c
index 5171b53bccb5..d91efe1dc2d1 100644
--- a/arch/ppc/platforms/lite5200.c
+++ b/arch/ppc/platforms/lite5200.c
@@ -34,6 +34,7 @@
 #include <asm/mpc52xx.h>
 #include <asm/ppc_sys.h>
 #include <asm/machdep.h>
+#include <asm/pci-bridge.h>
 
 #include <syslib/mpc52xx_pci.h>
 
@@ -68,12 +69,32 @@ lite5200_show_cpuinfo(struct seq_file *m)
 }
 
 #ifdef CONFIG_PCI
+#ifdef CONFIG_LITE5200B
+static int
+lite5200_map_irq(struct pci_dev *dev, unsigned char idsel,
+                    unsigned char pin)
+{
+        static char pci_irq_table[][4] =
+        /*
+         *      PCI IDSEL/INTPIN->INTLINE
+         *        A             B             C             D
+         */
+        {
+                {MPC52xx_IRQ0, MPC52xx_IRQ1, MPC52xx_IRQ2, MPC52xx_IRQ3},
+                {MPC52xx_IRQ1, MPC52xx_IRQ2, MPC52xx_IRQ3, MPC52xx_IRQ0},
+        };
+
+        const long min_idsel = 24, max_idsel = 25, irqs_per_slot = 4;
+        return PCI_IRQ_TABLE_LOOKUP;
+}
+#else /* Original Lite */
 static int
 lite5200_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
 {
         return (pin == 1) && (idsel==24) ? MPC52xx_IRQ0 : -1;
 }
 #endif
+#endif
 
 static void __init
 lite5200_setup_cpu(void)
@@ -127,11 +148,17 @@ lite5200_setup_cpu(void)
         out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_SNOOP);
         out_be32(&xlb->snoop_window, MPC52xx_PCI_TARGET_MEM | 0x1d);
 
-        /* IRQ[0-3] setup : IRQ0     - Level Active Low  */
-        /*                  IRQ[1-3] - Level Active High */
+        /* IRQ[0-3] setup */
         intr_ctrl = in_be32(&intr->ctrl);
         intr_ctrl &= ~0x00ff0000;
-        intr_ctrl |=  0x00c00000;
+#ifdef CONFIG_LITE5200B
+        /* IRQ[0-3] Level Active Low */
+        intr_ctrl |=  0x00ff0000;
+#else
+        /* IRQ0 Level Active Low
+         * IRQ[1-3] Level Active High */
+        intr_ctrl |=  0x00c00000;
+#endif
         out_be32(&intr->ctrl, intr_ctrl);
 
         /* Unmap reg zone */