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authorKonrad Eisele <konrad@gaisler.com>2009-08-17 00:13:32 +0000
committerDavid S. Miller <davem@davemloft.net>2009-08-17 18:32:10 -0700
commite63829de3d03f92cea2b26119e0aa9a7043b9913 (patch)
tree0f0bbf2f86ef8a447e9b2a298662003602650e87 /arch/sparc/kernel/of_device_32.c
parent0fd7ef1fe0e6e70c7851ce65a2eb8a8d3f49147e (diff)
downloadop-kernel-dev-e63829de3d03f92cea2b26119e0aa9a7043b9913.zip
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sparc,leon: Added support for AMBAPP bus.
The device is a AMBA bus if it is a child of prom node "ambapp" (AMBA plug and play). Two functions leon_trans_init() and leon_node_init() (defined in sparc/kernel/leon_kernel.c) are called in the prom_build_tree() path if CONFIG_SPARC_LEON is defined. leon_node_init() will build up the device tree using AMBA plug and play. Also: a extra check was addes to prom_common.c:build_one_prop() in case a rom-node is undefined which can happen for SPARC-LEON because it creates only a minimum nodes to emulate sparc behaviour. Signed-off-by: Konrad Eisele <konrad@gaisler.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/of_device_32.c')
-rw-r--r--arch/sparc/kernel/of_device_32.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/sparc/kernel/of_device_32.c b/arch/sparc/kernel/of_device_32.c
index 9039670..4c26eb5 100644
--- a/arch/sparc/kernel/of_device_32.c
+++ b/arch/sparc/kernel/of_device_32.c
@@ -9,6 +9,8 @@
#include <linux/irq.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
+#include <asm/leon.h>
+#include <asm/leon_amba.h>
#include "of_device_common.h"
@@ -97,6 +99,35 @@ static unsigned long of_bus_sbus_get_flags(const u32 *addr, unsigned long flags)
return IORESOURCE_MEM;
}
+ /*
+ * AMBAPP bus specific translator
+ */
+
+static int of_bus_ambapp_match(struct device_node *np)
+{
+ return !strcmp(np->name, "ambapp");
+}
+
+static void of_bus_ambapp_count_cells(struct device_node *child,
+ int *addrc, int *sizec)
+{
+ if (addrc)
+ *addrc = 1;
+ if (sizec)
+ *sizec = 1;
+}
+
+static int of_bus_ambapp_map(u32 *addr, const u32 *range,
+ int na, int ns, int pna)
+{
+ return of_bus_default_map(addr, range, na, ns, pna);
+}
+
+static unsigned long of_bus_ambapp_get_flags(const u32 *addr,
+ unsigned long flags)
+{
+ return IORESOURCE_MEM;
+}
/*
* Array of bus specific translators
@@ -121,6 +152,15 @@ static struct of_bus of_busses[] = {
.map = of_bus_default_map,
.get_flags = of_bus_sbus_get_flags,
},
+ /* AMBA */
+ {
+ .name = "ambapp",
+ .addr_prop_name = "reg",
+ .match = of_bus_ambapp_match,
+ .count_cells = of_bus_ambapp_count_cells,
+ .map = of_bus_ambapp_map,
+ .get_flags = of_bus_ambapp_get_flags,
+ },
/* Default */
{
.name = "default",
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