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authorPaul Mackerras <paulus@samba.org>2005-10-22 16:02:39 +1000
committerPaul Mackerras <paulus@samba.org>2005-10-22 16:02:39 +1000
commit35499c0195e46f479cf6ac16ad8d3f394b5fcc10 (patch)
tree25660acd2425de5236a1eff7a25dc931e6f86492 /arch/powerpc/platforms/powermac/setup.c
parentb6ba92819dc1304a4e5a0bf06b297c657b58168a (diff)
downloadlinux-35499c0195e46f479cf6ac16ad8d3f394b5fcc10.tar.gz
powerpc: Merge in 64-bit powermac support.
This brings in a lot of changes from arch/ppc64/kernel/pmac_*.c to arch/powerpc/platforms/powermac/*.c and makes various minor tweaks elsewhere. On the powermac we now initialize ppc_md by copying the whole pmac_md structure into it, which required some changes in the ordering of initializations of individual fields of it. Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/powermac/setup.c')
-rw-r--r--arch/powerpc/platforms/powermac/setup.c458
1 files changed, 314 insertions, 144 deletions
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 0bad53fa36ef..da0cb165dfc6 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -1,11 +1,11 @@
/*
- * arch/ppc/platforms/setup.c
+ * Powermac setup and early boot code plus other random bits.
*
* PowerPC version
* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
*
* Adapted for Power Macintosh by Paul Mackerras
- * Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au)
+ * Copyright (C) 1996 Paul Mackerras (paulus@samba.org)
*
* Derived from "arch/alpha/kernel/setup.c"
* Copyright (C) 1995 Linus Torvalds
@@ -65,13 +65,16 @@
#include <asm/mediabay.h>
#include <asm/machdep.h>
#include <asm/dma.h>
-#include <asm/bootx.h>
#include <asm/cputable.h>
#include <asm/btext.h>
#include <asm/pmac_feature.h>
#include <asm/time.h>
#include <asm/of_device.h>
#include <asm/mmu_context.h>
+#include <asm/iommu.h>
+#include <asm/smu.h>
+#include <asm/pmc.h>
+#include <asm/mpic.h>
#include "pmac.h"
@@ -88,16 +91,24 @@ int pmac_newworld = 1;
static int current_root_goodness = -1;
extern int pmac_newworld;
+extern struct machdep_calls pmac_md;
#define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */
-extern void zs_kgdb_hook(int tty_num);
-static void ohare_init(void);
-#ifdef CONFIG_BOOTX_TEXT
-static void pmac_progress(char *s, unsigned short hex);
+#ifdef CONFIG_PPC64
+#include <asm/udbg.h>
+int sccdbg;
#endif
+extern void zs_kgdb_hook(int tty_num);
+
sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
+EXPORT_SYMBOL(sys_ctrler);
+
+#ifdef CONFIG_PMAC_SMU
+unsigned long smu_cmdbuf_abs;
+EXPORT_SYMBOL(smu_cmdbuf_abs);
+#endif
#ifdef CONFIG_SMP
extern struct smp_ops_t psurge_smp_ops;
@@ -191,44 +202,69 @@ static void pmac_show_percpuinfo(struct seq_file *m, int i)
return;
}
#endif /* CONFIG_CPU_FREQ_PMAC */
+#ifdef CONFIG_PPC32
of_show_percpuinfo(m, i);
+#endif
}
-static volatile u32 *sysctrl_regs;
+#ifndef CONFIG_ADB_CUDA
+int find_via_cuda(void)
+{
+ if (!find_devices("via-cuda"))
+ return 0;
+ printk("WARNING ! Your machine is CUDA-based but your kernel\n");
+ printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n");
+ return 0;
+}
+#endif
-void __init
-pmac_setup_arch(void)
+#ifndef CONFIG_ADB_PMU
+int find_via_pmu(void)
{
- struct device_node *cpu;
- int *fp;
- unsigned long pvr;
+ if (!find_devices("via-pmu"))
+ return 0;
+ printk("WARNING ! Your machine is PMU-based but your kernel\n");
+ printk(" wasn't compiled with CONFIG_ADB_PMU option !\n");
+ return;
+}
+#endif
- pvr = PVR_VER(mfspr(SPRN_PVR));
+#ifndef CONFIG_PMAC_SMU
+int smu_init(void)
+{
+ /* should check and warn if SMU is present */
+ return 0;
+}
+#endif
- /* Set loops_per_jiffy to a half-way reasonable value,
- for use until calibrate_delay gets called. */
- cpu = find_type_devices("cpu");
- if (cpu != 0) {
- fp = (int *) get_property(cpu, "clock-frequency", NULL);
- if (fp != 0) {
- if (pvr == 4 || pvr >= 8)
- /* 604, G3, G4 etc. */
- loops_per_jiffy = *fp / HZ;
- else
- /* 601, 603, etc. */
- loops_per_jiffy = *fp / (2*HZ);
- } else
- loops_per_jiffy = 50000000 / HZ;
- }
+#ifdef CONFIG_PPC32
+static volatile u32 *sysctrl_regs;
+static void __init ohare_init(void)
+{
/* this area has the CPU identification register
and some registers used by smp boards */
sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
- ohare_init();
- /* Lookup PCI hosts */
- pmac_find_bridges();
+ /*
+ * Turn on the L2 cache.
+ * We assume that we have a PSX memory controller iff
+ * we have an ohare I/O controller.
+ */
+ if (find_devices("ohare") != NULL) {
+ if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
+ if (sysctrl_regs[4] & 0x10)
+ sysctrl_regs[4] |= 0x04000020;
+ else
+ sysctrl_regs[4] |= 0x04000000;
+ if(has_l2cache)
+ printk(KERN_INFO "Level 2 cache enabled\n");
+ }
+ }
+}
+static void __init l2cr_init(void)
+{
/* Checks "l2cr-value" property in the registry */
if (cpu_has_feature(CPU_FTR_L2CR)) {
struct device_node *np = find_devices("cpus");
@@ -247,68 +283,90 @@ pmac_setup_arch(void)
}
if (ppc_override_l2cr)
- printk(KERN_INFO "L2CR overriden (0x%x), backside cache is %s\n",
- ppc_override_l2cr_value, (ppc_override_l2cr_value & 0x80000000)
+ printk(KERN_INFO "L2CR overridden (0x%x), "
+ "backside cache is %s\n",
+ ppc_override_l2cr_value,
+ (ppc_override_l2cr_value & 0x80000000)
? "enabled" : "disabled");
+}
+#endif
+
+void __init pmac_setup_arch(void)
+{
+ struct device_node *cpu;
+ int *fp;
+ unsigned long pvr;
+
+ pvr = PVR_VER(mfspr(SPRN_PVR));
+
+ /* Set loops_per_jiffy to a half-way reasonable value,
+ for use until calibrate_delay gets called. */
+ loops_per_jiffy = 50000000 / HZ;
+ cpu = of_find_node_by_type(NULL, "cpu");
+ if (cpu != NULL) {
+ fp = (int *) get_property(cpu, "clock-frequency", NULL);
+ if (fp != NULL) {
+ if (pvr >= 0x30 && pvr < 0x80)
+ /* PPC970 etc. */
+ loops_per_jiffy = *fp / (3 * HZ);
+ else if (pvr == 4 || pvr >= 8)
+ /* 604, G3, G4 etc. */
+ loops_per_jiffy = *fp / HZ;
+ else
+ /* 601, 603, etc. */
+ loops_per_jiffy = *fp / (2 * HZ);
+ }
+ of_node_put(cpu);
+ }
+
+ /* Lookup PCI hosts */
+ pmac_pci_init();
+
+#ifdef CONFIG_PPC32
+ ohare_init();
+ l2cr_init();
+#endif /* CONFIG_PPC32 */
+
+#ifdef CONFIG_PPC64
+ /* Probe motherboard chipset */
+ /* this is done earlier in setup_arch for 32-bit */
+ pmac_feature_init();
+
+ /* We can NAP */
+ powersave_nap = 1;
+ printk(KERN_INFO "Using native/NAP idle loop\n");
+#endif
#ifdef CONFIG_KGDB
zs_kgdb_hook(0);
#endif
-#ifdef CONFIG_ADB_CUDA
find_via_cuda();
-#else
- if (find_devices("via-cuda")) {
- printk("WARNING ! Your machine is Cuda based but your kernel\n");
- printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n");
- }
-#endif
-#ifdef CONFIG_ADB_PMU
find_via_pmu();
-#else
- if (find_devices("via-pmu")) {
- printk("WARNING ! Your machine is PMU based but your kernel\n");
- printk(" wasn't compiled with CONFIG_ADB_PMU option !\n");
- }
-#endif
+ smu_init();
+
#ifdef CONFIG_NVRAM
pmac_nvram_init();
#endif
+
+#ifdef CONFIG_PPC32
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start)
ROOT_DEV = Root_RAM0;
else
#endif
ROOT_DEV = DEFAULT_ROOT_DEVICE;
+#endif
#ifdef CONFIG_SMP
/* Check for Core99 */
if (find_devices("uni-n") || find_devices("u3"))
smp_ops = &core99_smp_ops;
+#ifdef CONFIG_PPC32
else
smp_ops = &psurge_smp_ops;
+#endif
#endif /* CONFIG_SMP */
-
- pci_create_OF_bus_map();
-}
-
-static void __init ohare_init(void)
-{
- /*
- * Turn on the L2 cache.
- * We assume that we have a PSX memory controller iff
- * we have an ohare I/O controller.
- */
- if (find_devices("ohare") != NULL) {
- if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
- if (sysctrl_regs[4] & 0x10)
- sysctrl_regs[4] |= 0x04000020;
- else
- sysctrl_regs[4] |= 0x04000000;
- if(has_l2cache)
- printk(KERN_INFO "Level 2 cache enabled\n");
- }
- }
}
char *bootpath;
@@ -319,8 +377,7 @@ int boot_part;
extern dev_t boot_dev;
#ifdef CONFIG_SCSI
-void __init
-note_scsi_host(struct device_node *node, void *host)
+void __init note_scsi_host(struct device_node *node, void *host)
{
int l;
char *p;
@@ -351,8 +408,7 @@ EXPORT_SYMBOL(note_scsi_host);
#endif
#if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
-static dev_t __init
-find_ide_boot(void)
+static dev_t __init find_ide_boot(void)
{
char *p;
int n;
@@ -369,15 +425,13 @@ find_ide_boot(void)
}
#endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */
-static void __init
-find_boot_device(void)
+static void __init find_boot_device(void)
{
#if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
boot_dev = find_ide_boot();
#endif
}
-static int initializing = 1;
/* TODO: Merge the suspend-to-ram with the common code !!!
* currently, this is a stub implementation for suspend-to-disk
* only
@@ -428,6 +482,8 @@ static struct pm_ops pmac_pm_ops = {
#endif /* CONFIG_SOFTWARE_SUSPEND */
+static int initializing = 1;
+
static int pmac_late_init(void)
{
initializing = 0;
@@ -440,8 +496,7 @@ static int pmac_late_init(void)
late_initcall(pmac_late_init);
/* can't be __init - can be called whenever a disk is first accessed */
-void
-note_bootable_part(dev_t dev, int part, int goodness)
+void note_bootable_part(dev_t dev, int part, int goodness)
{
static int found_boot = 0;
char *p;
@@ -466,52 +521,68 @@ note_bootable_part(dev_t dev, int part, int goodness)
}
}
-static void
-pmac_restart(char *cmd)
-{
#ifdef CONFIG_ADB_CUDA
+static void cuda_restart(void)
+{
struct adb_request req;
-#endif /* CONFIG_ADB_CUDA */
+ cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM);
+ for (;;)
+ cuda_poll();
+}
+
+static void cuda_shutdown(void)
+{
+ struct adb_request req;
+
+ cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN);
+ for (;;)
+ cuda_poll();
+}
+
+#else
+#define cuda_restart()
+#define cuda_shutdown()
+#endif
+
+#ifndef CONFIG_ADB_PMU
+#define pmu_restart()
+#define pmu_shutdown()
+#endif
+
+#ifndef CONFIG_PMAC_SMU
+#define smu_restart()
+#define smu_shutdown()
+#endif
+
+static void pmac_restart(char *cmd)
+{
switch (sys_ctrler) {
-#ifdef CONFIG_ADB_CUDA
case SYS_CTRLER_CUDA:
- cuda_request(&req, NULL, 2, CUDA_PACKET,
- CUDA_RESET_SYSTEM);
- for (;;)
- cuda_poll();
+ cuda_restart();
break;
-#endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_ADB_PMU
case SYS_CTRLER_PMU:
pmu_restart();
break;
-#endif /* CONFIG_ADB_PMU */
+ case SYS_CTRLER_SMU:
+ smu_restart();
+ break;
default: ;
}
}
-static void
-pmac_power_off(void)
+static void pmac_power_off(void)
{
-#ifdef CONFIG_ADB_CUDA
- struct adb_request req;
-#endif /* CONFIG_ADB_CUDA */
-
switch (sys_ctrler) {
-#ifdef CONFIG_ADB_CUDA
case SYS_CTRLER_CUDA:
- cuda_request(&req, NULL, 2, CUDA_PACKET,
- CUDA_POWERDOWN);
- for (;;)
- cuda_poll();
+ cuda_shutdown();
break;
-#endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_ADB_PMU
case SYS_CTRLER_PMU:
pmu_shutdown();
break;
-#endif /* CONFIG_ADB_PMU */
+ case SYS_CTRLER_SMU:
+ smu_shutdown();
+ break;
default: ;
}
}
@@ -522,37 +593,17 @@ pmac_halt(void)
pmac_power_off();
}
+#ifdef CONFIG_PPC32
void __init pmac_init(void)
{
- /* isa_io_base gets set in pmac_find_bridges */
+ /* isa_io_base gets set in pmac_pci_init */
isa_mem_base = PMAC_ISA_MEM_BASE;
pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
ISA_DMA_THRESHOLD = ~0L;
DMA_MODE_READ = 1;
DMA_MODE_WRITE = 2;
- ppc_md.setup_arch = pmac_setup_arch;
- ppc_md.show_cpuinfo = pmac_show_cpuinfo;
- ppc_md.show_percpuinfo = pmac_show_percpuinfo;
- ppc_md.init_IRQ = pmac_pic_init;
- ppc_md.get_irq = pmac_get_irq; /* Changed later on ... */
-
- ppc_md.pcibios_fixup = pmac_pcibios_fixup;
- ppc_md.pcibios_enable_device_hook = pmac_pci_enable_device_hook;
- ppc_md.pcibios_after_init = pmac_pcibios_after_init;
- ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot;
-
- ppc_md.restart = pmac_restart;
- ppc_md.power_off = pmac_power_off;
- ppc_md.halt = pmac_halt;
-
- ppc_md.time_init = pmac_time_init;
- ppc_md.set_rtc_time = pmac_set_rtc_time;
- ppc_md.get_rtc_time = pmac_get_rtc_time;
- ppc_md.get_boot_time = pmac_get_boot_time;
- ppc_md.calibrate_decr = pmac_calibrate_decr;
-
- ppc_md.feature_call = pmac_do_feature_call;
+ ppc_md = pmac_md;
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
#ifdef CONFIG_BLK_DEV_IDE_PMAC
@@ -561,27 +612,62 @@ void __init pmac_init(void)
#endif /* CONFIG_BLK_DEV_IDE_PMAC */
#endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
-#ifdef CONFIG_BOOTX_TEXT
- ppc_md.progress = pmac_progress;
-#endif /* CONFIG_BOOTX_TEXT */
-
if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
}
+#endif
-#ifdef CONFIG_BOOTX_TEXT
-static void __init
-pmac_progress(char *s, unsigned short hex)
+/*
+ * Early initialization.
+ */
+static void __init pmac_init_early(void)
+{
+#ifdef CONFIG_PPC64
+ /* Initialize hash table, from now on, we can take hash faults
+ * and call ioremap
+ */
+ hpte_init_native();
+
+ /* Init SCC */
+ if (strstr(cmd_line, "sccdbg")) {
+ sccdbg = 1;
+ udbg_init_scc(NULL);
+ }
+
+ /* Setup interrupt mapping options */
+ ppc64_interrupt_controller = IC_OPEN_PIC;
+
+ iommu_init_early_u3();
+#endif
+}
+
+static void __init pmac_progress(char *s, unsigned short hex)
{
+#ifdef CONFIG_PPC64
+ if (sccdbg) {
+ udbg_puts(s);
+ udbg_puts("\n");
+ return;
+ }
+#endif
+#ifdef CONFIG_BOOTX_TEXT
if (boot_text_mapped) {
btext_drawstring(s);
btext_drawchar('\n');
}
-}
#endif /* CONFIG_BOOTX_TEXT */
+}
-static int __init
-pmac_declare_of_platform_devices(void)
+/*
+ * pmac has no legacy IO, anything calling this function has to
+ * fail or bad things will happen
+ */
+static int pmac_check_legacy_ioport(unsigned int baseport)
+{
+ return -ENODEV;
+}
+
+static int __init pmac_declare_of_platform_devices(void)
{
struct device_node *np;
@@ -594,6 +680,13 @@ pmac_declare_of_platform_devices(void)
break;
}
}
+ np = find_devices("valkyrie");
+ if (np)
+ of_platform_device_create(np, "valkyrie", NULL);
+ np = find_devices("platinum");
+ if (np)
+ of_platform_device_create(np, "platinum", NULL);
+
np = find_devices("u3");
if (np) {
for (np = np->child; np != NULL; np = np->sibling)
@@ -603,15 +696,92 @@ pmac_declare_of_platform_devices(void)
break;
}
}
-
- np = find_devices("valkyrie");
- if (np)
- of_platform_device_create(np, "valkyrie", NULL);
- np = find_devices("platinum");
- if (np)
- of_platform_device_create(np, "platinum", NULL);
+ np = of_find_node_by_type(NULL, "smu");
+ if (np) {
+ of_platform_device_create(np, "smu", NULL);
+ of_node_put(np);
+ }
return 0;
}
device_initcall(pmac_declare_of_platform_devices);
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init pmac_probe(int platform)
+{
+#ifdef CONFIG_PPC64
+ if (platform != PLATFORM_POWERMAC)
+ 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();
+#endif
+
+#ifdef CONFIG_PMAC_SMU
+ /*
+ * SMU based G5s need some memory below 2Gb, at least the current
+ * driver needs that. We have to allocate it now. We allocate 4k
+ * (1 small page) for now.
+ */
+ smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
+#endif /* CONFIG_PMAC_SMU */
+
+ return 1;
+}
+
+#ifdef CONFIG_PPC64
+static int pmac_probe_mode(struct pci_bus *bus)
+{
+ struct device_node *node = bus->sysdata;
+
+ /* We need to use normal PCI probing for the AGP bus,
+ since the device for the AGP bridge isn't in the tree. */
+ if (bus->self == NULL && device_is_compatible(node, "u3-agp"))
+ return PCI_PROBE_NORMAL;
+
+ return PCI_PROBE_DEVTREE;
+}
+#endif
+
+struct machdep_calls __initdata pmac_md = {
+#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
+ .cpu_die = generic_mach_cpu_die,
+#endif
+ .probe = pmac_probe,
+ .setup_arch = pmac_setup_arch,
+ .init_early = pmac_init_early,
+ .show_cpuinfo = pmac_show_cpuinfo,
+ .show_percpuinfo = pmac_show_percpuinfo,
+ .init_IRQ = pmac_pic_init,
+ .get_irq = mpic_get_irq, /* changed later */
+ .pcibios_fixup = pmac_pcibios_fixup,
+ .restart = pmac_restart,
+ .power_off = pmac_power_off,
+ .halt = pmac_halt,
+ .time_init = pmac_time_init,
+ .get_boot_time = pmac_get_boot_time,
+ .set_rtc_time = pmac_set_rtc_time,
+ .get_rtc_time = pmac_get_rtc_time,
+ .calibrate_decr = pmac_calibrate_decr,
+ .feature_call = pmac_do_feature_call,
+ .check_legacy_ioport = pmac_check_legacy_ioport,
+ .progress = pmac_progress,
+#ifdef CONFIG_PPC64
+ .pci_probe_mode = pmac_probe_mode,
+ .idle_loop = native_idle,
+ .enable_pmcs = power4_enable_pmcs,
+#endif
+#ifdef CONFIG_PPC32
+ .pcibios_enable_device_hook = pmac_pci_enable_device_hook,
+ .pcibios_after_init = pmac_pcibios_after_init,
+ .phys_mem_access_prot = pci_phys_mem_access_prot,
+#endif
+};