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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-06 17:58:22 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-06 17:58:22 -0800
commite4e88f31bcb5f05f24b9ae518d4ecb44e1a7774d (patch)
tree9eef6998f5bbd1a2c999011d9e0151f00c6e7297 /arch/powerpc/platforms/wsp/wsp.c
parent9753dfe19a85e7e45a34a56f4cb2048bb4f50e27 (diff)
parentef88e3911c0e0301e73fa3b3b2567aabdbe17cc4 (diff)
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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (185 commits) powerpc: fix compile error with 85xx/p1010rdb.c powerpc: fix compile error with 85xx/p1023_rds.c powerpc/fsl: add MSI support for the Freescale hypervisor arch/powerpc/sysdev/fsl_rmu.c: introduce missing kfree powerpc/fsl: Add support for Integrated Flash Controller powerpc/fsl: update compatiable on fsl 16550 uart nodes powerpc/85xx: fix PCI and localbus properties in p1022ds.dts powerpc/85xx: re-enable ePAPR byte channel driver in corenet32_smp_defconfig powerpc/fsl: Update defconfigs to enable some standard FSL HW features powerpc: Add TBI PHY node to first MDIO bus sbc834x: put full compat string in board match check powerpc/fsl-pci: Allow 64-bit PCIe devices to DMA to any memory address powerpc: Fix unpaired probe_hcall_entry and probe_hcall_exit offb: Fix setting of the pseudo-palette for >8bpp offb: Add palette hack for qemu "standard vga" framebuffer offb: Fix bug in calculating requested vram size powerpc/boot: Change the WARN to INFO for boot wrapper overlap message powerpc/44x: Fix build error on currituck platform powerpc/boot: Change the load address for the wrapper to fit the kernel powerpc/44x: Enable CRASH_DUMP for 440x ... Fix up a trivial conflict in arch/powerpc/include/asm/cputime.h due to the additional sparse-checking code for cputime_t.
Diffstat (limited to 'arch/powerpc/platforms/wsp/wsp.c')
-rw-r--r--arch/powerpc/platforms/wsp/wsp.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/wsp/wsp.c b/arch/powerpc/platforms/wsp/wsp.c
new file mode 100644
index 000000000000..d25cc96c21b8
--- /dev/null
+++ b/arch/powerpc/platforms/wsp/wsp.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2008-2011, IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/smp.h>
+#include <linux/delay.h>
+#include <linux/time.h>
+
+#include <asm/scom.h>
+
+#include "wsp.h"
+#include "ics.h"
+
+#define WSP_SOC_COMPATIBLE "ibm,wsp-soc"
+#define PBIC_COMPATIBLE "ibm,wsp-pbic"
+#define COPRO_COMPATIBLE "ibm,wsp-coprocessor"
+
+static int __init wsp_probe_buses(void)
+{
+ static __initdata struct of_device_id bus_ids[] = {
+ /*
+ * every node in between needs to be here or you won't
+ * find it
+ */
+ { .compatible = WSP_SOC_COMPATIBLE, },
+ { .compatible = PBIC_COMPATIBLE, },
+ { .compatible = COPRO_COMPATIBLE, },
+ {},
+ };
+ of_platform_bus_probe(NULL, bus_ids, NULL);
+
+ return 0;
+}
+
+void __init wsp_setup_arch(void)
+{
+ /* init to some ~sane value until calibrate_delay() runs */
+ loops_per_jiffy = 50000000;
+
+ scom_init_wsp();
+
+ /* Setup SMP callback */
+#ifdef CONFIG_SMP
+ a2_setup_smp();
+#endif
+#ifdef CONFIG_PCI
+ wsp_setup_pci();
+#endif
+}
+
+void __init wsp_setup_irq(void)
+{
+ wsp_init_irq();
+ opb_pic_init();
+}
+
+
+int __init wsp_probe_devices(void)
+{
+ struct device_node *np;
+
+ /* Our RTC is a ds1500. It seems to be programatically compatible
+ * with the ds1511 for which we have a driver so let's use that
+ */
+ np = of_find_compatible_node(NULL, NULL, "dallas,ds1500");
+ if (np != NULL) {
+ struct resource res;
+ if (of_address_to_resource(np, 0, &res) == 0)
+ platform_device_register_simple("ds1511", 0, &res, 1);
+ }
+
+ wsp_probe_buses();
+
+ return 0;
+}
+
+void wsp_halt(void)
+{
+ u64 val;
+ scom_map_t m;
+ struct device_node *dn;
+ struct device_node *mine;
+ struct device_node *me;
+
+ me = of_get_cpu_node(smp_processor_id(), NULL);
+ mine = scom_find_parent(me);
+
+ /* This will halt all the A2s but not power off the chip */
+ for_each_node_with_property(dn, "scom-controller") {
+ if (dn == mine)
+ continue;
+ m = scom_map(dn, 0, 1);
+
+ /* read-modify-write it so the HW probe does not get
+ * confused */
+ val = scom_read(m, 0);
+ val |= 1;
+ scom_write(m, 0, val);
+ scom_unmap(m);
+ }
+ m = scom_map(mine, 0, 1);
+ val = scom_read(m, 0);
+ val |= 1;
+ scom_write(m, 0, val);
+ /* should never return */
+ scom_unmap(m);
+}
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