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| author | Konrad Eisele <konrad@gaisler.com> | 2009-08-17 02:13:32 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-08-18 03:32:10 +0200 |
| commit | e63829de3d03f92cea2b26119e0aa9a7043b9913 (patch) | |
| tree | 0f0bbf2f86ef8a447e9b2a298662003602650e87 /arch/sparc/kernel/of_device_32.c | |
| parent | sparc,leon: Introduce the sparc-leon CPU type. (diff) | |
| download | linux-e63829de3d03f92cea2b26119e0aa9a7043b9913.tar.xz linux-e63829de3d03f92cea2b26119e0aa9a7043b9913.zip | |
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.c | 40 |
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 90396702ea2c..4c26eb59e742 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", |