powerpc: Merge maple support code to arch/powerpc/platforms/maple
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/maple/setup.c b/arch/powerpc/platforms/maple/setup.c
new file mode 100644
index 0000000..7ece898
--- /dev/null
+++ b/arch/powerpc/platforms/maple/setup.c
@@ -0,0 +1,295 @@
+/*
+ * Maple (970 eval board) setup code
+ *
+ * (c) Copyright 2004 Benjamin Herrenschmidt (benh@kernel.crashing.org),
+ * IBM Corp.
+ *
+ * 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.
+ *
+ */
+
+#define DEBUG
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/user.h>
+#include <linux/a.out.h>
+#include <linux/tty.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/major.h>
+#include <linux/initrd.h>
+#include <linux/vt_kern.h>
+#include <linux/console.h>
+#include <linux/ide.h>
+#include <linux/pci.h>
+#include <linux/adb.h>
+#include <linux/cuda.h>
+#include <linux/pmu.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+#include <linux/serial.h>
+#include <linux/smp.h>
+
+#include <asm/processor.h>
+#include <asm/sections.h>
+#include <asm/prom.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/bitops.h>
+#include <asm/io.h>
+#include <asm/pci-bridge.h>
+#include <asm/iommu.h>
+#include <asm/machdep.h>
+#include <asm/dma.h>
+#include <asm/cputable.h>
+#include <asm/time.h>
+#include <asm/of_device.h>
+#include <asm/lmb.h>
+#include <asm/mpic.h>
+#include <asm/udbg.h>
+
+#include "maple.h"
+
+#ifdef DEBUG
+#define DBG(fmt...) udbg_printf(fmt)
+#else
+#define DBG(fmt...)
+#endif
+
+extern void generic_find_legacy_serial_ports(u64 *physport,
+ unsigned int *default_speed);
+
+static void maple_restart(char *cmd)
+{
+ unsigned int maple_nvram_base;
+ unsigned int maple_nvram_offset;
+ unsigned int maple_nvram_command;
+ struct device_node *rtcs;
+
+ /* find NVRAM device */
+ rtcs = find_compatible_devices("nvram", "AMD8111");
+ if (rtcs && rtcs->addrs) {
+ maple_nvram_base = rtcs->addrs[0].address;
+ } else {
+ printk(KERN_EMERG "Maple: Unable to find NVRAM\n");
+ printk(KERN_EMERG "Maple: Manual Restart Required\n");
+ return;
+ }
+
+ /* find service processor device */
+ rtcs = find_devices("service-processor");
+ if (!rtcs) {
+ printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
+ printk(KERN_EMERG "Maple: Manual Restart Required\n");
+ return;
+ }
+ maple_nvram_offset = *(unsigned int*) get_property(rtcs,
+ "restart-addr", NULL);
+ maple_nvram_command = *(unsigned int*) get_property(rtcs,
+ "restart-value", NULL);
+
+ /* send command */
+ outb_p(maple_nvram_command, maple_nvram_base + maple_nvram_offset);
+ for (;;) ;
+}
+
+static void maple_power_off(void)
+{
+ unsigned int maple_nvram_base;
+ unsigned int maple_nvram_offset;
+ unsigned int maple_nvram_command;
+ struct device_node *rtcs;
+
+ /* find NVRAM device */
+ rtcs = find_compatible_devices("nvram", "AMD8111");
+ if (rtcs && rtcs->addrs) {
+ maple_nvram_base = rtcs->addrs[0].address;
+ } else {
+ printk(KERN_EMERG "Maple: Unable to find NVRAM\n");
+ printk(KERN_EMERG "Maple: Manual Power-Down Required\n");
+ return;
+ }
+
+ /* find service processor device */
+ rtcs = find_devices("service-processor");
+ if (!rtcs) {
+ printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
+ printk(KERN_EMERG "Maple: Manual Power-Down Required\n");
+ return;
+ }
+ maple_nvram_offset = *(unsigned int*) get_property(rtcs,
+ "power-off-addr", NULL);
+ maple_nvram_command = *(unsigned int*) get_property(rtcs,
+ "power-off-value", NULL);
+
+ /* send command */
+ outb_p(maple_nvram_command, maple_nvram_base + maple_nvram_offset);
+ for (;;) ;
+}
+
+static void maple_halt(void)
+{
+ maple_power_off();
+}
+
+#ifdef CONFIG_SMP
+struct smp_ops_t maple_smp_ops = {
+ .probe = smp_mpic_probe,
+ .message_pass = smp_mpic_message_pass,
+ .kick_cpu = smp_generic_kick_cpu,
+ .setup_cpu = smp_mpic_setup_cpu,
+ .give_timebase = smp_generic_give_timebase,
+ .take_timebase = smp_generic_take_timebase,
+};
+#endif /* CONFIG_SMP */
+
+void __init maple_setup_arch(void)
+{
+ /* init to some ~sane value until calibrate_delay() runs */
+ loops_per_jiffy = 50000000;
+
+ /* Setup SMP callback */
+#ifdef CONFIG_SMP
+ smp_ops = &maple_smp_ops;
+#endif
+ /* Lookup PCI hosts */
+ maple_pci_init();
+
+#ifdef CONFIG_DUMMY_CONSOLE
+ conswitchp = &dummy_con;
+#endif
+
+ printk(KERN_INFO "Using native/NAP idle loop\n");
+}
+
+/*
+ * Early initialization.
+ */
+static void __init maple_init_early(void)
+{
+ unsigned int default_speed;
+ u64 physport;
+
+ DBG(" -> maple_init_early\n");
+
+ /* Initialize hash table, from now on, we can take hash faults
+ * and call ioremap
+ */
+ hpte_init_native();
+
+ /* Find the serial port */
+ generic_find_legacy_serial_ports(&physport, &default_speed);
+
+ DBG("phys port addr: %lx\n", (long)physport);
+
+ if (physport) {
+ void *comport;
+ /* Map the uart for udbg. */
+ comport = (void *)ioremap(physport, 16);
+ udbg_init_uart(comport, default_speed);
+
+ DBG("Hello World !\n");
+ }
+
+ /* Setup interrupt mapping options */
+ ppc64_interrupt_controller = IC_OPEN_PIC;
+
+ iommu_init_early_u3();
+
+ DBG(" <- maple_init_early\n");
+}
+
+
+static __init void maple_init_IRQ(void)
+{
+ struct device_node *root;
+ unsigned int *opprop;
+ unsigned long opic_addr;
+ struct mpic *mpic;
+ unsigned char senses[128];
+ int n;
+
+ DBG(" -> maple_init_IRQ\n");
+
+ /* XXX: Non standard, replace that with a proper openpic/mpic node
+ * in the device-tree. Find the Open PIC if present */
+ root = of_find_node_by_path("/");
+ opprop = (unsigned int *) get_property(root,
+ "platform-open-pic", NULL);
+ if (opprop == 0)
+ panic("OpenPIC not found !\n");
+
+ n = prom_n_addr_cells(root);
+ for (opic_addr = 0; n > 0; --n)
+ opic_addr = (opic_addr << 32) + *opprop++;
+ of_node_put(root);
+
+ /* Obtain sense values from device-tree */
+ prom_get_irq_senses(senses, 0, 128);
+
+ mpic = mpic_alloc(opic_addr,
+ MPIC_PRIMARY | MPIC_BIG_ENDIAN |
+ MPIC_BROKEN_U3 | MPIC_WANTS_RESET,
+ 0, 0, 128, 128, senses, 128, "U3-MPIC");
+ BUG_ON(mpic == NULL);
+ mpic_init(mpic);
+
+ DBG(" <- maple_init_IRQ\n");
+}
+
+static void __init maple_progress(char *s, unsigned short hex)
+{
+ printk("*** %04x : %s\n", hex, s ? s : "");
+}
+
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init maple_probe(int platform)
+{
+ if (platform != PLATFORM_MAPLE)
+ return 0;
+ /*
+ * On U3, the DART (iommu) must be allocated now since it
+ * has an impact on htab_initialize (due to the large page it
+ * occupies having to be broken up so the DART itself is not
+ * part of the cacheable linar mapping
+ */
+ alloc_u3_dart_table();
+
+ return 1;
+}
+
+struct machdep_calls __initdata maple_md = {
+ .probe = maple_probe,
+ .setup_arch = maple_setup_arch,
+ .init_early = maple_init_early,
+ .init_IRQ = maple_init_IRQ,
+ .get_irq = mpic_get_irq,
+ .pcibios_fixup = maple_pcibios_fixup,
+ .pci_get_legacy_ide_irq = maple_pci_get_legacy_ide_irq,
+ .restart = maple_restart,
+ .power_off = maple_power_off,
+ .halt = maple_halt,
+ .get_boot_time = maple_get_boot_time,
+ .set_rtc_time = maple_set_rtc_time,
+ .get_rtc_time = maple_get_rtc_time,
+ .calibrate_decr = generic_calibrate_decr,
+ .progress = maple_progress,
+ .idle_loop = native_idle,
+};