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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/prom_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/prom_32.c')
-rw-r--r-- | arch/sparc/kernel/prom_32.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/sparc/kernel/prom_32.c b/arch/sparc/kernel/prom_32.c index fe43e80772db..0a37e8cfd160 100644 --- a/arch/sparc/kernel/prom_32.c +++ b/arch/sparc/kernel/prom_32.c @@ -24,6 +24,8 @@ #include <asm/prom.h> #include <asm/oplib.h> +#include <asm/leon.h> +#include <asm/leon_amba.h> #include "prom.h" @@ -131,6 +133,35 @@ static void __init ebus_path_component(struct device_node *dp, char *tmp_buf) regs->which_io, regs->phys_addr); } +/* "name:vendor:device@irq,addrlo" */ +static void __init ambapp_path_component(struct device_node *dp, char *tmp_buf) +{ + struct amba_prom_registers *regs; unsigned int *intr; + unsigned int *device, *vendor; + struct property *prop; + + prop = of_find_property(dp, "reg", NULL); + if (!prop) + return; + regs = prop->value; + prop = of_find_property(dp, "interrupts", NULL); + if (!prop) + return; + intr = prop->value; + prop = of_find_property(dp, "vendor", NULL); + if (!prop) + return; + vendor = prop->value; + prop = of_find_property(dp, "device", NULL); + if (!prop) + return; + device = prop->value; + + sprintf(tmp_buf, "%s:%d:%d@%x,%x", + dp->name, *vendor, *device, + *intr, regs->phys_addr); +} + static void __init __build_path_component(struct device_node *dp, char *tmp_buf) { struct device_node *parent = dp->parent; @@ -143,6 +174,8 @@ static void __init __build_path_component(struct device_node *dp, char *tmp_buf) return sbus_path_component(dp, tmp_buf); if (!strcmp(parent->type, "ebus")) return ebus_path_component(dp, tmp_buf); + if (!strcmp(parent->type, "ambapp")) + return ambapp_path_component(dp, tmp_buf); /* "isa" is handled with platform naming */ } |