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authorJeremy McNicoll <jeremy.mcnicoll@windriver.com>2008-05-05 18:17:24 -0400
committerKumar Gala <galak@kernel.crashing.org>2008-05-13 08:53:48 -0500
commitbfd123bf91704b88093673e615cc93329f820ab4 (patch)
treeec9080bdaaa6668fe294f1752400c73d00f55646 /arch/powerpc/platforms/85xx
parent73f5b8f942d6a2f178061dbbf9bcc54ca68ddf39 (diff)
downloadblackbird-op-linux-bfd123bf91704b88093673e615cc93329f820ab4.tar.gz
blackbird-op-linux-bfd123bf91704b88093673e615cc93329f820ab4.zip
[POWERPC] 85xx: SBC8548 - Add flash support and HW Rev reporting
The following adds local bus, flash and MTD partition nodes for sbc8548. As well, a compatible field for the soc node, so that of_platform_bus_probe() will pick it up. Something that is provided through this newly added epld node is the Hardware Revision which is now being utilized. Signed-off-by: Jeremy McNicoll <jeremy.mcnicoll@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/85xx')
-rw-r--r--arch/powerpc/platforms/85xx/sbc8548.c30
1 files changed, 29 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/85xx/sbc8548.c b/arch/powerpc/platforms/85xx/sbc8548.c
index 488facb99fe8..b9246ea0928a 100644
--- a/arch/powerpc/platforms/85xx/sbc8548.c
+++ b/arch/powerpc/platforms/85xx/sbc8548.c
@@ -49,6 +49,8 @@
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
+static int sbc_rev;
+
static void __init sbc8548_pic_init(void)
{
struct mpic *mpic;
@@ -79,6 +81,30 @@ static void __init sbc8548_pic_init(void)
mpic_init(mpic);
}
+/* Extract the HW Rev from the EPLD on the board */
+static int __init sbc8548_hw_rev(void)
+{
+ struct device_node *np;
+ struct resource res;
+ unsigned int *rev;
+ int board_rev = 0;
+
+ np = of_find_compatible_node(NULL, NULL, "hw-rev");
+ if (np == NULL) {
+ printk("No HW-REV found in DTB.\n");
+ return -ENODEV;
+ }
+
+ of_address_to_resource(np, 0, &res);
+ of_node_put(np);
+
+ rev = ioremap(res.start,sizeof(unsigned int));
+ board_rev = (*rev) >> 28;
+ iounmap(rev);
+
+ return board_rev;
+}
+
/*
* Setup the architecture
*/
@@ -104,6 +130,7 @@ static void __init sbc8548_setup_arch(void)
}
}
#endif
+ sbc_rev = sbc8548_hw_rev();
}
static void sbc8548_show_cpuinfo(struct seq_file *m)
@@ -115,7 +142,7 @@ static void sbc8548_show_cpuinfo(struct seq_file *m)
svid = mfspr(SPRN_SVR);
seq_printf(m, "Vendor\t\t: Wind River\n");
- seq_printf(m, "Machine\t\t: SBC8548\n");
+ seq_printf(m, "Machine\t\t: SBC8548 v%d\n", sbc_rev);
seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
seq_printf(m, "SVR\t\t: 0x%x\n", svid);
@@ -130,6 +157,7 @@ static void sbc8548_show_cpuinfo(struct seq_file *m)
static struct of_device_id __initdata of_bus_ids[] = {
{ .name = "soc", },
{ .type = "soc", },
+ { .compatible = "simple-bus", },
{},
};
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