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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /arch/powerpc/platforms/embedded6xx/linkstation.c
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--arch/powerpc/platforms/embedded6xx/linkstation.c162
1 files changed, 162 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/embedded6xx/linkstation.c b/arch/powerpc/platforms/embedded6xx/linkstation.c
new file mode 100644
index 000000000..f514d5d28
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/linkstation.c
@@ -0,0 +1,162 @@
+/*
+ * Board setup routines for the Buffalo Linkstation / Kurobox Platform.
+ *
+ * Copyright (C) 2006 G. Liakhovetski (g.liakhovetski@gmx.de)
+ *
+ * Based on sandpoint.c by Mark A. Greer
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of
+ * any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/initrd.h>
+#include <linux/of_platform.h>
+
+#include <asm/time.h>
+#include <asm/prom.h>
+#include <asm/mpic.h>
+#include <asm/pci-bridge.h>
+
+#include "mpc10x.h"
+
+static const struct of_device_id of_bus_ids[] __initconst = {
+ { .type = "soc", },
+ { .compatible = "simple-bus", },
+ {},
+};
+
+static int __init declare_of_platform_devices(void)
+{
+ of_platform_bus_probe(NULL, of_bus_ids, NULL);
+ return 0;
+}
+machine_device_initcall(linkstation, declare_of_platform_devices);
+
+static int __init linkstation_add_bridge(struct device_node *dev)
+{
+#ifdef CONFIG_PCI
+ int len;
+ struct pci_controller *hose;
+ const int *bus_range;
+
+ printk("Adding PCI host bridge %pOF\n", dev);
+
+ bus_range = of_get_property(dev, "bus-range", &len);
+ if (bus_range == NULL || len < 2 * sizeof(int))
+ printk(KERN_WARNING "Can't get bus-range for %pOF, assume"
+ " bus 0\n", dev);
+
+ hose = pcibios_alloc_controller(dev);
+ if (hose == NULL)
+ return -ENOMEM;
+ hose->first_busno = bus_range ? bus_range[0] : 0;
+ hose->last_busno = bus_range ? bus_range[1] : 0xff;
+ setup_indirect_pci(hose, 0xfec00000, 0xfee00000, 0);
+
+ /* Interpret the "ranges" property */
+ /* This also maps the I/O region and sets isa_io/mem_base */
+ pci_process_bridge_OF_ranges(hose, dev, 1);
+#endif
+ return 0;
+}
+
+static void __init linkstation_setup_arch(void)
+{
+ struct device_node *np;
+
+ /* Lookup PCI host bridges */
+ for_each_compatible_node(np, "pci", "mpc10x-pci")
+ linkstation_add_bridge(np);
+
+ printk(KERN_INFO "BUFFALO Network Attached Storage Series\n");
+ printk(KERN_INFO "(C) 2002-2005 BUFFALO INC.\n");
+}
+
+/*
+ * Interrupt setup and service. Interrupts on the linkstation come
+ * from the four PCI slots plus onboard 8241 devices: I2C, DUART.
+ */
+static void __init linkstation_init_IRQ(void)
+{
+ struct mpic *mpic;
+
+ mpic = mpic_alloc(NULL, 0, 0, 4, 0, " EPIC ");
+ BUG_ON(mpic == NULL);
+
+ /* PCI IRQs */
+ mpic_assign_isu(mpic, 0, mpic->paddr + 0x10200);
+
+ /* I2C */
+ mpic_assign_isu(mpic, 1, mpic->paddr + 0x11000);
+
+ /* ttyS0, ttyS1 */
+ mpic_assign_isu(mpic, 2, mpic->paddr + 0x11100);
+
+ mpic_init(mpic);
+}
+
+extern void avr_uart_configure(void);
+extern void avr_uart_send(const char);
+
+static void __noreturn linkstation_restart(char *cmd)
+{
+ local_irq_disable();
+
+ /* Reset system via AVR */
+ avr_uart_configure();
+ /* Send reboot command */
+ avr_uart_send('C');
+
+ for(;;) /* Spin until reset happens */
+ avr_uart_send('G'); /* "kick" */
+}
+
+static void __noreturn linkstation_power_off(void)
+{
+ local_irq_disable();
+
+ /* Power down system via AVR */
+ avr_uart_configure();
+ /* send shutdown command */
+ avr_uart_send('E');
+
+ for(;;) /* Spin until power-off happens */
+ avr_uart_send('G'); /* "kick" */
+ /* NOTREACHED */
+}
+
+static void __noreturn linkstation_halt(void)
+{
+ linkstation_power_off();
+ /* NOTREACHED */
+}
+
+static void linkstation_show_cpuinfo(struct seq_file *m)
+{
+ seq_printf(m, "vendor\t\t: Buffalo Technology\n");
+ seq_printf(m, "machine\t\t: Linkstation I/Kurobox(HG)\n");
+}
+
+static int __init linkstation_probe(void)
+{
+ if (!of_machine_is_compatible("linkstation"))
+ return 0;
+
+ pm_power_off = linkstation_power_off;
+
+ return 1;
+}
+
+define_machine(linkstation){
+ .name = "Buffalo Linkstation",
+ .probe = linkstation_probe,
+ .setup_arch = linkstation_setup_arch,
+ .init_IRQ = linkstation_init_IRQ,
+ .show_cpuinfo = linkstation_show_cpuinfo,
+ .get_irq = mpic_get_irq,
+ .restart = linkstation_restart,
+ .halt = linkstation_halt,
+ .calibrate_decr = generic_calibrate_decr,
+};